Hi guys. Does anybody have any clue about how to create a class which inherits from SqlDataAdapter?
I tried but looks like SqlDataAdapter is not inheritable. I would like to extend it with some custom method such as a method which fills a Dataset (used with a DataGrid) with the only few records to display per page (say 20) against the thousand records it might instead contain otherwise.
Any workarounds?
Many thanks in advance for your help.
hi
it looks like my thread has been deleted but I keep on asking.
When trying to connect to a table i a SQL2005 database in a vb.Net webapplication I get the following error message from the wizard:
"The wizard detected the following errors when configuring the data adapter "SqlDataAdapter1".
"Check" Generated SELECT Statement
"Check" Generated Mappings
"Warning" Generated INSERT Statement
There were errors configuring the data adapter
"Warning" Generated UPDATE Statement
There were errors configuring the data adapter
"Warning" Generated DELETE Statement
There were errors configuring the data adapter"
The same connection works fine in a vb6 application. I have seen other threads concerning this in this forum but I can't find any answers. Any ideas anyone?
ciao chris
Hi I am writing an app in flash which needs to hook up to MS SQL via asp.I need the code below to pass the var (ptodaysDate) to the sql statement. I can hard code it in and it works great but I really need to pass the var from flash.Pulling my hair out here, not much left to go.Any help greatly appreciated.---------------------------------------------- [WebMethod] public Schedule[] getSchedule(int ptodaysDate) { SqlDataAdapter adpt = new SqlDataAdapter("SELECT scheduleID, roomName, eventType,unitName,groupName,staffName,staffName2,theDate,theEnd FROM tb_schedule Where theDate >= @rtodaysDate", connString); SqlParameter rtodaysDate = new SqlParameter("@rtodaysDate", ptodaysDate); DataSet ds = new DataSet(); ArrayList al = new ArrayList(); adpt.Fill(ds); foreach (DataRow row in ds.Tables[0].Rows) { Schedule obj = new Schedule(); obj.scheduleID = (int)row["scheduleID"]; obj.roomName = (string)row["roomName"]; obj.eventType = (string)row["eventType"]; obj.unitName = (string)row["unitName"]; obj.groupName = (string)row["groupName"]; obj.staffName = (string)row["staffName"]; obj.staffName2 = (string)row["staffName2"]; obj.theDate = (string)row["theDate"]; obj.theEnd = (string)row["theEnd"]; al.Add(obj); } Schedule[] outArray = (Schedule[])al.ToArray(typeof(Schedule)); return outArray; } public class Schedule { public int scheduleID; public string roomName; public string eventType; public string unitName; public string groupName; public string staffName; public string staffName2; public string theDate; public string theEnd; }
View 2 Replies View RelatedIt's a pretty basic question but I haven't been able to find any examples out there. I dimmed a dataadapter and would like to reuse later in my code (line 3 in the code below). What is the correct syntax to do this? Dim da As New SqlDataAdapter("SELECT * FROM myTable", conn)da.Fill(myDataTable)da.______ ("SELECT * FROM myTable2", conn)da.Fill(myDataTable2)
View 2 Replies View RelatedI'm working on a project to dynamically create PDFs with content from an SQL server. My current approach is to get the data I need into a DataSet using SqlDataAdapter, write the DataSet to a stream as XML, transform the XML into FO and then output a pdf using FOP. For some reason I get the following exception "System.NullReferenceException - Object reference not set to an instance of an object" when I try to set the SelectCommand property of my data adapter. Code for the project follows:Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim con As SqlConnection Dim cmd As SqlCommand Dim IDlist As String Dim keyidary As Array Dim query As String Dim tempxml As Stream query = "*****query is valid and very long, so it's not included here*****" IDlist = Request.Form("chosenIDs") keyidary = Split(IDlist, ",") Dim makequery As New StringBuilder(query) For Each ID As String In keyidary makequery.Append(" OR (KeyID = '" & ID & "')") Next query = makequery.ToString() 'Response.Write(query) When uncommented this prints the query just fine 'Response.End() Try con = New SqlConnection con.ConnectionString = "****Connection String is valid****" cmd = New SqlCommand cmd.CommandText = query cmd.CommandType = CommandType.Text cmd.Connection = con Dim adpt As SqlDataAdapter adpt.SelectCommand = cmd 'Response.Write(query) When these are above or between the previous 2 statements, query is printed, 'Response.End() otherwise I get the error described above. Dim profiles As New DataSet adpt.Fill(profiles) profiles.WriteXml(tempxml) Dim step1 As XslTransform = New XslTransform Dim step2 As XslTransform = New XslTransform step1.Load(Server.MapPath("TransAttmpt1.xslt")) step2.Load(Server.MapPath("formatXML.xsl")) Dim xml, pdf As String xml = "profiles.xml" pdf = "Profiles.pdf" Dim temp2xml As New XPathDocument(tempxml) Response.Write(query) Response.End() Dim midstream As Stream Dim finalxml As StreamWriter = New StreamWriter(xml) step1.Transform(temp2xml, Nothing, midstream, Nothing) Dim xpathdoc2 As XPathDocument = New XPathDocument(midstream) step2.Transform(xpathdoc2, Nothing, finalxml, Nothing) GeneratePDF(xml, pdf) 'There's a lot more but it doesn't seem relevant now.... I'm somewhat at a loss on how to proceed and any help is very greatly appreciated.Thanks!
View 2 Replies View RelatedHi all,
I have datatable having around 50 rows and 3 columns ID, Name and ExpVal, which is an expression columns,where the values can be any SQL functions Like REPLICATE(), SOUNDEX ( 'value' ) Or REVERSE ( 'value' ).....
i want to insert each row in that datatable like
INSERT INTO TAB1 ( ID, Name, ExpVal) VALUES (1, 'some name', SOUNDEX ( 'some name' ) )
so that the ExpVal will have value of the function ie inserted row look like
ID Name ExpVal1 some name S500 <--- Result of SOUNDEX ( 'some name' )
I'm using sqldatadapter to insert these values to the database
string sql = "INSERT INTO TAB1 (ID, Name, ExpVal)VALUES (@ID, @Name, @ExpVal) ";SqlDataAdapter sqlAdptr = new SqlDataAdapter();SqlCommand sqlCmd = new SqlCommand(sql, con);sqlCmd.parameters.Add("@ID", SqlDbType.Int, 0, "ID");sqlCmd.parameters.Add("@Name", SqlDbType.NVarChar, 200, "Name");sqlCmd.parameters.Add("@ExpVal", SqlDbType.VarChar, 100, "ExpVal");sqlAdptr.InsertCommand = sqlCmd;sqlAdptr.Update(dataTable);
This works fine, but the problem is, now the TAB1 contains
ID Name ExpVal1 some name 'SOUNDEX ( 'some name' )' instead of S500
Thatis the sql funtion is passed by SqlDataAdapter to database as a string and it is not executing while row is inserted to the table.Please provide what changes i have to make if i want SOUNDEX ( 'some name' ) to executed while data insertion take place
Thanks in advance
I'm getting a strange error with my dataadapter. Here's my code: using (SqlConnection conn = new SqlConnection(
ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
{
SqlDataAdapter da = new SqlDataAdapter("sprocCUSTOM", conn);
da.SelectCommand.Parameters.AddWithValue("@eventID", EventID);
conn.Open(); //open connection
DataSet ds = new DataSet();
da.Fill(ds);
gvAttendees.DataSource = ds;
gvAttendees.DataBind();
}This is the error I'm getting: Incorrect syntax near 'sprocCUSTOM'.But the error is highlighted at the line that reads "da.Fill(ds);"There's nothing wrong with the stored procedure either. It exists and works fine.
I am using SqlDataAdapter.Update(DataSet) to insert records into multiple tables in one call, but for some reason only first table was inserted.
Dim _cnn As New SqlConnection(ConfigurationSettings.AppSettings("ConnectionString"))
Dim _sql As String = "Select a,b FROM Table1;Select d, c From Table2;"
Dim _da As New SqlDataAdapter(_sql, _cnn)
Dim _sqlCmdBdr As New SqlCommandBuilder(_da)
Dim _ds As New DataSet
_da.Fill(_ds)
Dim _newrow1 As DataRow = _ds.Tables(0).NewRow
_newrow1("a") = "NewA"
_newrow1("b") = "NewB"
_ds.Tables(0).Rows.Add(_newrow1)
Dim _newrow2 As DataRow = _ds.Tables(1).NewRow
_newrow2("d") = "NewD"
_newrow2("c") = "NewC"
_ds.Tables(1).Rows.Add(_newrow2)
_da.Update(_ds)
new record inserted only into Table1, no new rows in Table2
Please advise!
Thanks
Hi,
I am porting an ASP.NET/C# application from Microsoft Access to SQL Server 2005. In my code I have a method that uses the DataAdapter class to open a table, read some values out of it which are stored, open a second table, read some additional data from it storing the data in the same structure as used before, then updating the first table with the combined data.
When I execute the dataAdapter.Update() method I get the following error:
"Dynamic SQL generation for the Update Command is not supported against a Select Command that does not return any key column information."
I am uncertain what this error is about. This code worked fine against Microsoft Access so it must be something different in how SQL Server works.
Can anyone tell me what this error is complaining about?
Many thanks!
Bob
With MUCH help from this site and its users, I now know how to link a SqlCommand to a stored procedure:
What I don't know how to do, if it is possible, is to use a stored procedure with a SQLDataAdapter...
Here is the code as I am using, anyone have an idea on how to do this the right way?
' Define data objects
Dim conn As SqlConnection
Dim dataSet As New DataSet
Dim adapter As SqlDataAdapter
If ViewState("FooterDataSet") Is Nothing Then
' Read the connection string from Web.config
Dim connectionString As String = _
ConfigurationManager.ConnectionStrings( _
"Greensheet").ConnectionString
' Initialize connection
conn = New SqlConnection(connectionString)
' Create adapter
adapter = New SqlDataAdapter("SELECT * " & _
"FROM Table " & _
"WHERE (ID= " & intID & ")", conn)
' Fill the DataSet
adapter.Fill(dataSet, "Footer")
' Store the DataSet in view state
ViewState("FooterDataSet") = dataSet
Else
dataSet = ViewState("FooterDataSet")
End If
' Prepare the sort expression using the gridSortDirection and
' gridSortExpression properties
Dim sortExpression As String
If gridSortDirection = SortDirection.Ascending Then
sortExpression = gridSortExpression & " ASC"
Else
sortExpression = gridSortExpression & " DESC"
End If
' Sort the data
dataSet.Tables("Footer").DefaultView.Sort = sortExpression
' Bind the grid to the DataSet
footerGrid.DataSource = _
dataSet.Tables("Footer").DefaultView
footerGrid.DataBind()
Since my select command involves multiple tables, I manually write the insert command, proplating the SqlParameters as follows:
string insCmdText = "INSERT INTO itcac_alan.COURSE " + " ([COURSE_ID], [COURSE_NAME], [COURSE_NO], [BEGIN_DATE], [END_DATE], [CREATER]) " + " VALUES(@COURSE_ID, @COURSE_NAME, @COURSE_NO, @BEGIN_DATE, @END_DATE, @CREATER)";
SqlCommand insCmd = new SqlCommand(insCmdText, conn); insCmd.Parameters.Add("@COURSE_ID", SqlDbType.VarChar); insCmd.Parameters.Add("@COURSE_NAME", SqlDbType.VarChar); insCmd.Parameters.Add("@COURSE_NO", SqlDbType.VarChar); insCmd.Parameters.Add("@BEGIN_DATE", SqlDbType.DateTime); insCmd.Parameters.Add("@END_DATE", SqlDbType.DateTime); insCmd.Parameters.Add("@CREATER", SqlDbType.VarChar);
da.InsertCommand = insCmd; // da is a data adapter
However, as I use the preceding adapter to update the underlying database which in fact is based on a disconnected DataRow, an exception is thrown:
The parameterized query '(@COURSE_ID varchar(8000),@COURSE_NAME varchar(8000),@COURSE_NO ' expects the parameter '@COURSE_ID', which was not supplied.
The code I update the database is as follows:
DataRow newRow = sourceTable.NewRow(); //sourceTable is a DataTable whose data rows are populated with da (SqlDataAdpater) in the preceding code
// Populating the newRow
Hashtable newValues = new Hashtable();
.....................
foreach (DictionaryEntry entry in newValues) { // entry.Key is identical to a column name in the newRow newRow[(string)entry.Key] = (entry.Value == null ? DBNull.Value : entry.Value); }
sourceTable.Rows.Add(newRow);
adapter.SelectCommand.Connection.Open();
adapter.Update(sourceTable); // Exception is thrown here
adapter.SelectCommand.Connection.Close();
Please give me some directions to debug. It seems that the values of Columns withn DataRow cannot be fetched into the corresponding adapter.InsertCommand.Parameters by the adpater. (As I use SqlCommandBuilder to automatically generate insert command, the code above wroks rightly.)
Thanks a million.
Ricky.
I know there are loads of posts on this, but this just will not update. I have tried various forms of the code all to no avail. And now I'm ready to throw my PC out the window........
What am I doing wrong?
cheers Mike
Dim da As SqlDataAdapterDim dSetOrp As DataSet
oCn = New SqlConnection(db.m_ConnectionString)
oCn.Open()da = New SqlDataAdapter("Select * from contact WHERE conid = " & lngConId, oCn)
dSetOrp = New DataSet
da.Fill(dSetOrp, "locTable") ' Fill the DataSet.
dSetOrp.Tables(0).Rows(0)("ConSttDate") = dtEffDateDim myBuilder As SqlCommandBuilder = New SqlCommandBuilder(da)
myBuilder.GetUpdateCommand()
da.UpdateCommand = myBuilder.GetUpdateCommand()
lRows = da.Update(dSetOrp, "locTable")
MyCommand.Parameters.Add(new SqlParameter("@ConsultantName",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@Calls",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@PPC",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@Mth",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@DaysInMonth",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@Coach",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@Center",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@ProductValue",SqlDbType.VarChar));
MyCommand.Parameters.Add(new SqlParameter("@ObjectiveValue",SqlDbType.VarChar));
MyCommand.CommandType = CommandType.StoredProcedure;
MyCommand.CommandTimeout = 360;
try
{
SqlDataAdapter saveCenterCoaches = new SqlDataAdapter(MyCommand);
saveCenterCoaches.InsertCommand = MyCommand;
DataSet updateSet = finalSet.GetChanges(DataRowState.Added);
saveCenterCoaches.Update(updateSet.Tables[0]);
}
catch(Exception ex)
{
throw ex;
}
Iam getting "Procedure expects parameter @ConsultantName, which was not supplied."
I have consultantname and other parameters built in my datatable.
Is it the correct way of doing?
Can someone help.It is urgent.
Hi, I was looking at how to update a database using SqlDataAdapter and I stumbled upon this code snippet from (http://www.java2s.com/Code/CSharp/Database-ADO.net/UpdatedatabaseusingtheSqlDataAdapter.htm):using System;
using System.Data;
using System.Data.SqlClient;
class Class1{
static void Main(string[] args){
SqlConnection thisConnection = new SqlConnection("server=(local)\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
SqlDataAdapter thisAdapter = new SqlDataAdapter("SELECT ID, FirstName FROM Employee", thisConnection);
SqlCommandBuilder thisBuilder = new SqlCommandBuilder(thisAdapter);
DataSet thisDataSet = new DataSet();
thisAdapter.Fill(thisDataSet, "Employee");
Console.WriteLine("name before change: {0}", thisDataSet.Tables["Employee"].Rows[9]["FirstName"]);
thisDataSet.Tables["Employee"].Rows[1]["FirstName"] = "Inc";
thisAdapter.Update(thisDataSet, "Employee");
Console.WriteLine("name after change: {0}", thisDataSet.Tables["Employee"].Rows[9]["FirstName"]);
}
}I was just wondering, without iteration, how did the line "thisDataSet.Tables["Employee"].Rows[1]["FirstName"] = "Inc";" managed to know which row it is to update? I tried it on my own application and it worked fine.Any help to assist me in understanding this would be appreciated. Thanks
Hello Dears;
I have an SqlDataAdapter which contains may queries. One query contians 3 query parameters as follows:
SELECT SUM(Amount) AS TotalFROM BoxesWHERE EntryDate BETWEEN @date1 AND @date2 AND Area=@Area
the query cannot be ran unless the queries parameters were provided. I have to access this query in code to add the parameters from controls. Is it possible to access it or use sqlDataSource instead?
Thanks alot
I'm trying to pass a querystring to an SqlDataAdapter object. To check if the query is a valid SELECT statement, I simply use a try-catch. But dispite the try-catch it still accepts valid INSERT statements. However, in the parameterlist of the SqlDataAdapter the required parameter is a Transact SQL SELECT statement or a stored procedure... Am I doing something wrong? Here is my code:try
{
my_conn = conn_open();
da = new SqlDataAdapter(query, my_conn);
da.Fill(result.resultDataset);
my_conn.Dispose();
}
catch (Exception e)
{
result.errMsg = "Database Error: " + e.Message;
result.success = false;
} Kehil
How to configure sqldatadapter with query like
"select name ,id from tlb1 where id in (select id from tlb2 where dept=@dept)"
Is the nested subquery is not allowed while configuring sqldaadapter?
Swati
Hi GuysI am facing a problem while updating a DataTable to database using sqldataadapter.In my application I am fetching a dataTable from Database and filling values into textboxes on the UI.User has given facility to change or add new texboxes (new row) on the fly .(Textboxes on the UI are like in a row(tr) having two textboxes in each row.)I am again then converting a new (empty) datatable from scrap and filling its rows with the value of textboxes on submit button event.The datatable which I have created has the same schema as the database table.Now what I want here is that changed value should be reflected to the already existed rows in database and only new rows should be inserted.I am using a SQLDataAdapter having two sqlcommands , one for update with update procedure name and parameter mapping and another for insert with parameter mapping.But SqlDataAdapter is inserting fresh new rows all the time in the database table not updating the older one.Please help me in the matterThanks & RegardsVishal Sharma
View 2 Replies View RelatedHow do i get the result 'puzzle' from the SQL and assign it to Integer and use it to compare with Request.Form ?
Protected Sub Page_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Me.Load
Dim connString As String = _ ConfigurationManager.ConnectionStrings("Local_LAConnectionString1").ConnectionString
Dim strsql As String = _
"Select CustomerID,CustomerNo,dbo.LA_DEC(Passkey) as passcode,dbo.LA_DEC(PuzzleKey) As puzzle, PuzzleFlag, NickName from Customers Where CustomerNo = '" & myAccount & "'"
Using myConnection As New SqlConnection(connString) Dim myCommand As New SqlCommand(strsql, myConnection)
myConnection.Open()
Dim PuzzleDataSet As New DataSet
Dim PuzzleAdapter As New SqlDataAdapter(myCommand) // <---- Coding here
myConnection.Close()
End Using
End Sub
I have a block of code that does a Fill() with a DataAdapter, which seems to throw an exception if no values are returned. Then, when I try to bind the DataSet that gets filled, an error occurs, it doesn't even try to bind the column headers or anything.
This process seems to work fine when some rows are found, but it is not always guaranteed that the row count will always be > 0. The nice thing about using the Fill() function, is that it creates all my column headers automatically, so I was just wondering if there's a way to do a Fill() then a subsequent DataBind() to a DataGrid which would automatically format the columns even when no rows are found?
Here's a bit of the source.. if the last line finds no rows, it throws an exception ( I assume this is normal):
strSQL = "SELECT * FROM Prods";
cm.CommandText = strSQL;
da = new SqlDataAdapter( cm );
da.Fill(shelf);
Anyone got any ideas on how to fix this problem?
Brent
hello i have this query but the data adapter wont accept it
i get this error
syntax error or access violation
if i hardcode the @person parameter in query analyzier it works fine.
ex: @person = 33 hardcoded
but it doesnt work in data adapter either 33 or @person
can someone please help me out
SELECT m.title, m.movieID, a.personID, 'Actor', p.firstName + ' ' + p.lastName
FROM movieactors a, people p, movies m
WHERE a.personID = p.personID
AND a.movieID = m.movieID
and a.personid = @person
UNION
(SELECT m.title, m.movieID, a.personID, 'Director', p.firstName + ' ' + p.lastName
FROM moviedirectors a, people p, movies m
WHERE a.personID = p.personID
AND a.movieID = m.movieID
and a.personid = @person
UNION
(SELECT m.title, m.movieID, a.personID, 'Writer', p.firstName + ' ' + p.lastName
FROM moviewriters a, people p, movies m
WHERE a.personID = p.personID
AND a.movieID = m.movieID
and a.personid = @person
UNION
(SELECT m.title, m.movieID, a.personID, 'Cinematographer', p.firstName + ' ' + p.lastName
FROM moviecinematographers a, people p, movies m
WHERE a.personID = p.personID
AND a.movieID = m.movieID
and a.personid = @person
UNION
(SELECT m.title, m.movieID, a.personID, 'Producer', p.firstName + ' ' + p.lastName
FROM movieproducers a, people p, movies m
WHERE a.personID = p.personID
AND a.movieID = m.movieID
and a.personid = @person))));
I've a management module (managing Products) currently being displayed on the aspx page using ObjectDataSource and GridView control.The datasource is taken from a class residing in my Data Access layer with custom methods such as getProducts() and deleteProduct(int productID)I'm currently using SqlDataAdapter as well as Datasets to manipulate the data and have no big problems so far.However, my issue is this, each time i delete a product using the deleteProduct method, I would need to refill the dataset to fill the dataset before i can proceed to delete the product. But since I already filled the dataset using the getProducts() method, is it possible to just use that dataset again so that I dont have to make it refill again? I need to know this cos my data might be alot in the future and refilling the dataset might slow down the performance. 1 public int deleteCompany(Object companyId)
2 {
3 SqlCommand deleteCommand = new SqlCommand("DELETE FROM pg_Company WHERE CompanyId = @companyId", getSqlConnection());
4
5 SqlParameter p1 = new SqlParameter("@companyId", SqlDbType.UniqueIdentifier);
6 p1.Value = (Guid)companyId;
7 p1.Direction = ParameterDirection.Input;
8
9 deleteCommand.Parameters.Add(p1);
10 dataAdapter.DeleteCommand = deleteCommand;
11
12 companyDS = getCompanies(); // <--- I need to refill this before I can delete, I would be iterating an empty ds.
13
14 try
15 {
16 foreach (DataRow row in companyDS.Tables["pg_Company"].Select(@"companyId = '" + companyId + "'"))
17 {
18 row.Delete();
19 }
20 return dataAdapter.Update(companyDS.Tables["pg_Company"]);
21 }
22 catch
23 {
24 return 0;
25 }
26 finally { }
27 }
I thank you in advance for any help here.
I am trying to use a sqldataadapter to log a record to a table with a stored procedure call. I am getting the following error: "System.NullReferenceException: Object reference not set to an instance of an object.
at ContactUs.LogEmail() in c:inetpubwwwrootMDWelcomeContactUs.aspx.vb:line 55"Here is my code: Protected Sub LogEmail()
'Trace.IsEnabled = True
Dim strConnect As String = ConfigurationManager.ConnectionStrings("LocalSqlServer").ToString
Dim strCommandText As String = "dbo.EmailsLogged_Insert"
Dim objConnect As New SqlConnection(strConnect)
Try
objConnect.Open()
Dim objDataAdapter As New SqlDataAdapter(strCommandText, objConnect)
objDataAdapter.InsertCommand.CommandText = strCommandText'this is line 55 in my source where error is thrown
objDataAdapter.InsertCommand.CommandType = CommandType.StoredProcedure
With objDataAdapter.InsertCommand.Parameters
.Add("@emailaddress", SqlDbType.VarChar, 255).Value = UsersEmail.Text
.Add("@subject", SqlDbType.VarChar, 255).Value = Subject.Text
.Add("@company", SqlDbType.VarChar, 255).Value = Company.Text
.Add("@phone", SqlDbType.VarChar, 255).Value = Phone.Text
.Add("@emailbody", SqlDbType.VarChar, 255).Value = Body.Text
End With
objDataAdapter.InsertCommand.ExecuteNonQuery()
objConnect.Close() 'then close the connection
Catch SQLError As SqlException
Response.Write("<H1>SQL Exception:</H1>")
Response.Write("<h2>" & SQLError.Procedure & "</h2><br />")
Response.Write("<h2>" & SQLError.Message & "</h2><br />")
Dim lineNum As Integer
Dim errMsgArray() As String = Split(SQLError.StackTrace, vbCrLf, , Microsoft.VisualBasic.CompareMethod.Text)
Do While lineNum <= errMsgArray.Length - 1
If Trim$(errMsgArray(lineNum)) <> "" Then
Response.Write("<br>" & errMsgArray(lineNum))
End If
lineNum = lineNum + 1
Loop
Catch objError As Exception
Dim oMsg As String
'display error details
oMsg = "<b>* Error while accessing data</b>.<br />" _
& objError.Message & "<br />" & objError.Source
Trace.Write(oMsg)
Response.Write(oMsg)
Response.End()
End Try
End Sub
I think the connection is OK (debugging shows that objConnect.State is open) but I am unclear why this is incorrect code here.
What happened to nice SqlDataAdapter.Fill method in ASP.net 2.0 + How can i now access and traverse trhough table.
ex : sqlDataAdapter.Fill(dataSetname.tblsname);
dataSet11.rows[][]
I'm getting duplicate records for the last record in the datatable. No matter how much or how little my datatable contains row records, it always duplicate the last one for some reason. Is there something wrong with my code below? EXAMID pulling from another stored procedure, which is outputed back to a variable.
---Data Access Layer---- If dt.Rows.Count > 0 Then
'INSERT EXAM ROSTERInsertComm = New SqlCommandsqladapter = New SqlDataAdapterInsertComm = New SqlClient.SqlCommand("ExamOfficers_AddOfficerSpecificExamRoster", conndb)InsertComm.CommandType = CommandType.StoredProcedure
sqladapter.InsertCommand = InsertCommInsertComm.Parameters.Add("@examid", SqlDbType.Int)InsertComm.Parameters("@examid").Value = examidInsertComm.Parameters.Add("@officerid", SqlDbType.Int, 12, "Officer_UID")InsertComm.Parameters.Add("@reimburse", SqlDbType.Bit, 12, "ReimburseToDb")InsertComm.Parameters.Add("@posttest", SqlDbType.Int, 12, "Post_Test")InsertComm.Parameters.Add("@pqcdate", SqlDbType.DateTime, 12, "pqc_date")InsertComm.Parameters.Add("@pqcscore", SqlDbType.Int, 12, "pqc_score")
conndb.Open()
sqladapter.UpdateBatchSize = 100InsertComm.UpdatedRowSource = UpdateRowSource.Nonesqladapter.Update(dt)
InsertComm.ExecuteNonQuery()InsertComm.Dispose()
End If
----Stored Procedure----
ALTER PROCEDURE [dbo].[ExamOfficers_AddOfficerSpecificExamRoster]
@ExamID as int,@OfficerID as int,@reimburse as bit=NULL,@posttest as int=NULL,@pqcdate as datetime=NULL,@pqcscore as int=NULL
ASBEGIN SET NOCOUNT ON;
Insert Into Exam_Officers(EXAM_UID,Officer_UID,reimburse,post_test,pqc_date,pqc_score)values(@ExamID,@OfficerID,@reimburse,@posttest,@pqcdate,@pqcscore)
END
Hi,
I am using following code to fill my dataset. when multiple user connect to the web-site it will give me following error:
Error Message: Transaction (Process ID 98) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
I am using stored procedure to select records from database.
DataSet ds = new DataSet();SqlConnection mc = OpenSqlConnection();
try
{SqlCommand cmd = new SqlCommand(strCmd, mc);cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandTimeout = 0;if (parameters != null)
{foreach (KeyValuePair<string, object> p in parameters)
{
cmd.Parameters.AddWithValue(p.Key, p.Value);
}
}SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
}catch (Exception ex)
{
}
finally
{
mc.Close();
}
return ds;
Appreciate your help,
prashant
I tryed to update tables part of my MSDE database, using the SqlDataAdapter.Update() method. It worked fine untill I tryed to update a table that has a Column with the Text SQL DataType. It didn't work. The error was :
"The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator."
Is there a way to do it ?
Thanks,
Jeff
When updating data using .NET 2.0 SqlDataAdapter and a strong typed dataset, it seems that constraints (foreign key) and trigger are disabled. I'm using a stored procedure to delete rows and calling it from SSMS causes the trigger to fire. Calling it via the SqlDataAdapter not.
Can someone confirm this?
At least here, my triggers don't fire.
How can I enable, that triggers in SQL Server do fire?
Are there differences in this behaviour when using batch updates or not?
TIA,
Hannoman
I thought I'd post this quick problem and answer, as I couldn't find the answer when searching for it.
I tried to call a stored procedure on SQL Server 2000 using the System.Data.SqlClient objects, and was not expecting any unusual issues. However when I came to call the Fill method I received the error "Arithmetic overflow error converting expression to data type int."
My first checks were the obvious ones of verifying that I'd provided all the correct datatypes and had no unexpected null values, but I found nothing out of order. The problem turns out to be a difference on the maximum values for integers between C# and SQL Server 2000. Previously having hit issues with SQL Server integers requiring Long Integer types in VB6, I was aware that these are 32-bit integers, so I was passing in Int32 variables. The problem was that Int32.MaxValue is not a valid integer for SQL Server. Seeing as I was providing an abitrary upper value for records-per-page (to fetch all in one page), I was simply able to change this to Int16.MaxValue and will hit no further problems as this is also well beyond any expected range for this parameter.
If anyone can name off the top of their heads what value should be provided as a maximum integer for SQL Server 2000, this might be a useful addition, but otherwise I hope this spares others some hunting if they also experience this problem.
James Burton
Help! I have posted this before and I had hoped that the VS2005 SP1 would help my problem. It didn't. My code is shown below. I have dropped a sqlconnection, sqldataadapter and a strongly-typed dataset from the toolbox onto the component designer for my page and written my code. It compiles without any errors but at runtine I receive the system error "Object reference not set to an instance of an object." The error occurs at the first line where the sqldataadapter is mentioned. I have shufflled the code and the error still occurs at first mention of the dataadapter. I have set parameters to a simple string such as "myemail." It hasn't helped. I have used the "Dim" statement as "Dim DaAuthorLogin as System.Data.SqlClient.SqlDataadapter and Dim DaAuthorLogin as New ......) at the start of the private sub generated by the event requiring the data. Nothing helps. Here is my simple code to select data from a sqlserver 2000 database. Why do I continue to get this error?
Partial Class AuthorLogin
Inherits System.Web.UI.Page
Protected WithEvents AuthorInformation As System.Web.UI.Page
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.SqlSelectCommand1 = New System.Data.SqlClient.SqlCommand
Me.DaAuthorLogin = New System.Data.SqlClient.SqlDataAdapter
Me.MDData = New System.Data.SqlClient.SqlConnection
Me.DsAuthorLogin = New MedicalDecisions.DsAuthorLogin
CType(Me.DsAuthorLogin, System.ComponentModel.ISupportInitialize).BeginInit()
'
'SqlSelectCommand1
'
Me.SqlSelectCommand1.CommandText = "SELECT AuthorAlias, AuthorEmail, AuthorPassword, LastName, PreferredName" & Global.Microsoft.VisualBasic.ChrW(13) & Global.Microsoft.VisualBasic.ChrW(10) & "FRO" & _
"M T_Author" & Global.Microsoft.VisualBasic.ChrW(13) & Global.Microsoft.VisualBasic.ChrW(10) & "WHERE (AuthorEmail = @AuthorEmail) AND (AuthorPassword =" & _
" @AuthorPassword)"
Me.SqlSelectCommand1.Connection = Me.MDData
Me.SqlSelectCommand1.Parameters.AddRange(New System.Data.SqlClient.SqlParameter() {New System.Data.SqlClient.SqlParameter("@AuthorEmail", System.Data.SqlDbType.NVarChar, 50, "AuthorEmail"), New System.Data.SqlClient.SqlParameter("@AuthorPassword", System.Data.SqlDbType.NVarChar, 50, "AuthorPassword")})
'
'DaAuthorLogin
'
Me.DaAuthorLogin.SelectCommand = Me.SqlSelectCommand1
Me.DaAuthorLogin.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "T_Author", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("AuthorAlias", "AuthorAlias"), New System.Data.Common.DataColumnMapping("AuthorEmail", "AuthorEmail"), New System.Data.Common.DataColumnMapping("AuthorPassword", "AuthorPassword"), New System.Data.Common.DataColumnMapping("LastName", "LastName"), New System.Data.Common.DataColumnMapping("PreferredName", "PreferredName")})})
'
'MDData
'
Me.MDData.ConnectionString = "Data Source=CIS1022DAVID;Initial Catalog=CGData;Integrated Security=True;Pooling" & _
"=False"
Me.MDData.FireInfoMessageEventOnUserErrors = False
'
'DsAuthorLogin
'
Me.DsAuthorLogin.DataSetName = "DsAuthorLogin"
Me.DsAuthorLogin.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema
CType(Me.DsAuthorLogin, System.ComponentModel.ISupportInitialize).EndInit()
End Sub
Friend WithEvents SqlSelectCommand1 As System.Data.SqlClient.SqlCommand
Friend WithEvents MDData As System.Data.SqlClient.SqlConnection
Friend WithEvents DaAuthorLogin As System.Data.SqlClient.SqlDataAdapter
Friend WithEvents DsAuthorLogin As MedicalDecisions.DsAuthorLogin
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs)
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
'no code here
End Sub
Private Sub AuthorLoginRegister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginRegister.Click
'for new author registration
Response.Redirect("AuthorInformation.aspx")
End Sub
Private Sub AuthorLoginBack_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginBack.Click
'to navigate back
Response.Redirect("MainPaths.aspx")
End Sub
Protected Sub AuthorLoginPassword_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginPassword.TextChanged
'pass the parameters to the dataadapter and return dataset
DaAuthorLogin.SelectCommand.Parameters("@AuthorEmail").Value = AuthorLoginEmail.Text
DaAuthorLogin.SelectCommand.Parameters("@AuthorPassword").Value = AuthorLoginPassword.Text
MDData.Open()
DaAuthorLogin.Fill(DsAuthorLogin, "T_Author")
MDData.Close()
'set session objects
If DsAuthorLogin.T_Author.Rows.Count > 0 Then
Session("AuthorAlias") = DsAuthorLogin.T_Author(0).AuthorAlias
Session("LastName") = DsAuthorLogin.T_Author(0).LastName
Session("PreferredName") = DsAuthorLogin.T_Author(0).PreferredName
Response.Redirect("AuthorPaths.aspx")
Else : AuthorLoginNotValid.Visible = True
AuthorLoginEmail.Text = ""
AuthorLoginPassword.Text = ""
End If
End Sub
End Class
Thanks in advance,
David