Hi,
I use SqlDataReader to read one row from database and than set some properties to values retrieved like this:
string myString = myReader.GetValue(0) // this sets myString to first value in a row
If, however, I change order of columns returned by stored procedure myString would be set to wrong value.
Is there a way to do something like this: string myString = myReader.GetValue["ColumnName"];
Hi there
I am using an SqlDataReader to read and write to my back end database and i have got it to work using the code: myDataReader["myFieldName"].ToString();
However, when i have two fields of the same name (e.g a "Surname" belonging to students in a table, and "Surname" belonging to teachers in a different table), I can't Pick up the two different fields even though i have given aliases.
I don't really want to access these fields using an integer as the index as this will make management in the future difficult.
as a side note, i have to use aliases as i access the teachers table a number of different times to specify who the tutors are and who teachers of all their different subjects are.
thanks
pete
Hi
I have 2 tables defined as follows:
Table1 = uid, Field1, Field2, Field3 ... Fieldn, FormUID
Table2 = FormUID, Label, Position
When I query Table1 I would like to replace the column name of Field1...Fieldn with the Label from Table2 where the Position = n value of Field lable
e.g. lets say Table2 contains the following
1, customerName, 1
1, customerTitle, 2
1, customerDOB, 3
and Table1 might contain
1, Paul Jones, Mr, 21/09/1987, 1
when I query Table1 I would get
uid = 1, Field1 = Paul Jones, Field2 = Mr, Field3 = 21/09/1987
what I would like to get is
uid = 1, customerName = Paul Jones, customerTitle = Mr, customerDOB = 21/09/1987
I have up to 20 Fieldn columns so need to do this for all columns even if there is no matching columns.
any help would be great
regards
Hi Guys
I have a table that contains codes for commodities.Some of the codes in this table have changed and some of them have not.So now i want to design a solution that enable me to map the new codes in a different mapping table to the old ones in the other table.I also want to retain the old codes because most of the archived data used the old codes.
Where there is no new code, the current code is being retained.How do i design my table and queries so that i can use the new codes as if i was using the old code.I want to select products with a certain code but using the new code and mapping to the old codes or vice versa.
The structure of the data is like this.
Code Name
AA AA
AL Aluminium
ALM ALM
ALT Aluminium in tonnes
AR AR
AUD Australian Dollars
AUJPY AUJPY
CAQ CAQ
CC CC
CCF CCF
CER Carbon Emmission Reduction
The mapping table is like this:
XAA AA
XAL AL
XMA ALM
XAL ALT
XAR AR
In god we trust,everything else we test.
The Source Data is
ID--VAL1--VAL2--VAL3--VAL4--VAL5--VAL6
1---151---- ----- ----- Y----- -----
2---151---- -----Y----- -----Y-----Y
3---152----Y----- ------ ----- ------
4---152---- -----Y------ ----Y------
The Expected Output should be
ID--VAL1--VAL2--VAL3--VAL4--VAL5--VAL6
1--151----- ----Y------Y-----Y-----Y
2--152-----Y-----Y------ -----Y-----
New to SSIS...
I created a new package with a source and destination and manually created the output column with data type, etc. Works. The issue is say the table has 200 columns to export.. I dont want to create these by hand. How can I just say export them all to csv format and not have to specify and map each and every column?
Hi,
I am new to using SSIS. I am supposed to move data from a text file to a SQL Server table. I did that successfuly when I simply mapped column one-to-one, but when I could not conditionally map one column to different destination column depending on some criteria.
Example: I want to make SSIS map the column A depending on the value of field X:
If X= Value1 Map A -> B
if X= Value2 map A -> C and so on.
This is an urgent situation. I will really appreciate instant help.
Thanks,
Aref
can somebody show an example of how to map source and destination columns when uploading a file to sql server?
Also, please send me the mapping when i want to map source to different destination columns.
I had to use use ssis 2005 in a short project recently & had littletime to work it out. I was importing a whole bunch of flat files intoSQL Server tables with many derived columns and transformations inbetween.It seems to automatically map columns from the flat file to columns inthe sql table where the names of the columns are equal. But can italso do it automatically on position, so flat file column 1 goes tosql table colum 1, etc, etc? In each flat file I had to manually clickand drag the columns across to map them which took a very long time asthere were hundreds of columns in some tables!Thanks.
View 3 Replies View Related
Hi ,
I have a Package Consisting of the following (tried to portray the flow below)
1) OLE DB Source (Which I set the sql command for in code)
|
/
2) Rowcount Transform (Counts the Source Records)
|
/
3) Derived Column (Adds An AuditJobID ,ExecutionStartDate)
|
/
4) Conditional Split (Splits New and Updated Record - My Implementation of SCD)
/
/ /
5) Rowcount Transform (Counts the New Records) Rowcount Transform (Counts Update Records)
/
/ /
6) OLEDB Destination OLEDB Update Command
I am trying to map the columns in the "OLEDB Destination" with c# ,with the following
IDTSInput90 input = oledbDestination.InputCollection[0];
IDTSVirtualInput90 vInput = input.GetVirtualInput();
As soon as I call the input.GetVirtualInput(); method I get a com exception ,Seem that I am missing a
VirtualInputColumnCollection on the component ,but can't seem to figure out why.
When I drop the all the other components and only keep the OLEDb Source and OLEDB Destination with a flow between them , the call to input.GetVirtualInput() doe not fail with a com exception and I can mapping normally
I really need some guidance on the above.
Regards
Cedric
I have set up a script task in one of my packages that I have set up to modify another package right before running it. This package is nothing more than a data flow task that transfers rows via an sql command from one table into another. The strange thing is I have gotten it to work with some tables but not with others. T
he script bombs out in the loop where i map all of the columns found below, where i use MapInputColumn with the error HRESULT: 0xC0010009 On Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSExternalMetadataColumnCollection90.get_Item(Object Index)
The thing is this happens after looping roughly 55 times but there are still about 100 columns that it needs to loop through still.
Code Block
Dim input As IDTSInput90 = data_destination.InputCollection(0)
Dim virtual_input As IDTSVirtualInput90 = input.GetVirtualInput
Dim input_column As IDTSInputColumn90
Dim virtual_column As IDTSVirtualInputColumn90
' Iterate through the virtual input column collection and map field names
For Each virtual_column In virtual_input.VirtualInputColumnCollection
input_column = inst_data_destination.SetUsageType(input.ID, virtual_input, virtual_column.LineageID, DTSUsageType.UT_READONLY)
inst_data_destination.MapInputColumn(input.ID, input_column.ID, input.ExternalMetadataColumnCollection.FindObjectByID(virtual_column.Name).ID)
Next
Just for kicks i removed the mapping portion of the code and left in the SetUsageType to see if it would update the available input columns in the destination. The script will then finish successfully but still only the 55 or so fields out of 155 are available in the input. So i then stepped through the script with the mapping portion still disabled and after it loops successfully, i call reinitialize meta data and it produces an error in the input_column variable: HRESULT: 0xC0047041.
I find it odd that this still reports to me that the script finished successfully and I also find it odd that this works fine on two other tables I've tested but not this one. Any insight would be greatly appreciated.
The only way to add a new column to an existing mapping that I know is to go to advanced editor and refresh. This however keeps only the default mapping (where the field names match), the rest is wiped out, so need to restore the mapping manually after that. Risky and annoying at the same time. Is there any alternative?
View 3 Replies View RelatedHi Friends,
I have a small problem in parameter mapping for Execute SQL Task.
I am using a delete statement with 2 conditions.
Followed by another Execute SQL Task which contains commit statement.
delete from tname where c1 = ? and c2 =?
where c1 is number(4) datatype and c2 is of varchar2(20) datatype in oracle.
The connection manager i am using is ORacle OLE DB provider.
I am passing 2 global variables i.e g_v1 of Int32 and g_v2 of String Type.
In the parameter mapping of the Executing SQL task, i am mapping these 2 variables for
c1 and c2 and changed the datatypes inside parameter mapping as Numeric for c1 and Varchar for c2.
I also set the property as ByPassPrepare = True.
When i am executing the package i getting INVALID NUMBER ERROR.
i believe the SSIS is unable to perform the implict datatype converison.
For the next run, i changed the g_v1 varible datatype to Double and also i changed the parameter mapping for c1 as Doble datatype.
This time it is working fine. I can see the Green signal for the 2 SQL Tasks.
But when i connected to Oracle check the count in the table, the data is not getting deleted.
Also,
I set the property RetainSameConnection = TRUE for oracle connection manager.
I am not able to trace this logical error.
The same is working fine in my local machine.
But i am facing the problem when i deployed the same on the client machine.
Is there any problem with parameter mapping?
What should be equialent Datatype for Oracle NUMBER datatype that should be used inside the SSIS package while declaring the global variable and
inside the parameter mapping.
Any thoughts!
I'm in the process of converting legacy DTS packages to SSIS. I need to populate a table that has more fields than the source file. In DTS I did this with an ActiveX script. How do I go about doing this within SSIS.
In the ActiveX script most of the fields were defaulted with either spaces or zeroes.
One of the Destination fields needs to be incremented by 1 for each new record inserted.
Any help would be appreciated.
Thanks,
Jeff
Hi..
Every time I want to read any record from data base I read it in dataset for example:SqlConnection con = new SqlConnection(@"Data Source=localhost ;Initial Catalog=university ;Integrated Security=True");
SqlCommand cmd = new SqlCommand("select [User_AuthorityID] from users where [UserID]='" + TextBox1.Text + "' and [UserPassword]='" + TextBox2.Text + "' ", con);SqlDataAdapter adp = new SqlDataAdapter();
adp.SelectCommand = cmd;DataSet ds = new DataSet();
adp.Fill(ds, "UserID");foreach (DataRow dr in ds.Tables["UserID"].Rows)
{
user_type = dr[0].ToString();
Session.Add("User_AuthorityID", user_type);
.........
Is there easier way to read data from data base?
How I can use SqlDataReader to do that?
Thanks..
Hey All,
I have come across a situation with two tables, they are dynamic and the user can add and edit values in the tables so I need to build a dynamic display control. It is all based around an FAQ system I have built. The user can create new FAQ categories (that is one table) then create a new FAQ Question & Answer (that is the second table). The tables are linked by the category id. So now I am trying to display the FAQ section like so.
CATEGORY NAME
QuestionAnswerQuestionAnswerCATEGORY NAME
QuestionAnswerQuestionAnswerCATEGORY NAME
QuestionAnswerQuestionAnswer
So my idea was to run a loop within a loop. First loop the category name, then within the category name, loop a second time to grab all of the questions & answers within the category id captured from the first loops sql select statement, then proceed to loop the category name again and of course repeat the process until all loops are completed. However I am getting, and I kinda figured I would get an error about my SQLDataReader. Bellow is my code maybe some type of edit or different recommendation is needed. Any help will do, thanks!Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'--- Database Connection ---Dim sConnStr As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
Dim cnBKPost As New SqlConnection(sConnStr)
'--- End DB Connection ----
'----- FAQ's -------
Dim sql As String = "SELECT category_id, category_name FROM faq_category ORDER BY category_name DESC"Dim cmd As New SqlCommand(sql, cnBKPost)
cnBKPost.Open()Dim reader As SqlDataReader = cmd.ExecuteReader()
Dim str As New StringBuilder()
Dim catid As IntegerDo While reader.Read()
'--- Category Titles ----catid = reader("category_id")
str.Append("<h2>" & reader("category_name") & "</h2>")
'--- End Category Title ---
'--- Get FAQ's In Category ---
Dim sqlcat As String = "SELECT faq_question, faq_answer FROM tbl_faq WHERE faq_category = '" & catid & "'"Dim cmdcat As New SqlCommand(sqlcat, cnBKPost)
Dim readerfaq As SqlDataReader = cmdcat.ExecuteReader()Do While readerfaq.Read()
str.Append("<p><font style='font-size:12pt;font-color:#daa520;>'" & reader("faq_question") & "</font><br />")str.Append(reader("faq_answer") & "</p>")
str.Append("<br /><br /><br />")
Loop
readerfaq.Close()
'--- End Get FAQ's in Category ---
Loop
reader.Close()
cnBKPost.Close()Me.Literal1.Text = str.ToString()
End Sub
End Class
i'm using c# and SqlDataReader to simply retrieve data from one column of a database. problem is it's an integer i'm trying to retrieve, and so i'm trying to put it into an int variable, and i get the error "CS0029: Cannot implicitly convert type 'object' to 'int'" . i've looked for an answer for about an hour and every example for the SqlDataReader that i can find deals with strings only or the examples are too complex for me to understand.
there must be an easy way to retrieve this data and put it into an integer! help...
my line of code that creates the error:
int intGuestNum = dtrSelectTotalSessions["online_numSessions"];
Hi, from what I can find, there isn't a way to get the number of rows returned from a SQLDataReader command. Is this correct? If so, is there a way around this? My SQLDataReader command is as follows:Dim commandInd As New System.Data.OleDb.OleDbDataAdapter(strQueryCombined, connInd)Dim commandSQL As New SqlCommand("GetAssetList2", connStringSQL)Dim resultDS As New Data.DataSet()'// Fill the dataset with valuescommandInd.Fill(resultDS)'// Get the XML values of the dataset to send to SQL server and run a new queryDim strXML As String = resultDS.GetXml()Dim xmlFileList As SqlParameterDim strContainsClause As SqlParameter'// Create and execute the search against SQL ServerconnStringSQL.Open()commandSQL.CommandType = Data.CommandType.StoredProcedurecommandSQL.Parameters.Add("@xmlFileList", Data.SqlDbType.VarChar, 1000).Value = strXMLcommandSQL.Parameters.Add("@strContainsClause", Data.SqlDbType.VarChar, 1000).Value = strContainsConstructDim sqlReaderSource As SqlDataReader = commandSQL.ExecuteReader()results.DataSource = sqlReaderSourceresults.DataBind()connStringSQL.Close()And the stored procedure is such:DROP PROC dbo.GetAssetList2;GOCREATE PROC dbo.GetAssetList2(@xmlFileList varchar(1000),@strContainsClause varchar(1000))ASBEGINSET NOCOUNT ONDECLARE @intDocHandle intEXEC sp_xml_preparedocument @intDocHandle OUTPUT, @xmlFileListSELECT DISTINCTAssetsMaster.AssetMasterUID,SupportedFiles.AssetPath,FROM AssetsMaster, OPENXML (@intDocHandle, '/NewDataSet/Table',2) WITH (FILENAME varchar(256)) AS x,SupportedFilesWHEREAssetsMaster.AssetFileName = x.FILENAMEAND AssetsMaster.Extension = SupportedFiles.Extension UNIONSELECT DISTINCTAssetsMaster.AssetMasterUID,SupportedFiles.AssetPath,FROM AssetsMaster, OPENXML (@intDocHandle, '/NewDataSet/Table',2) WITH (FILENAME varchar(256)) AS x,SupportedFilesWHEREAssetsMaster.AssetFileName <> x.FILENAMEAND CONTAINS ((Description, Keywords), @strContainsClause)AND AssetsMaster.Extension = SupportedFiles.ExtensionORDER BY AssetsMaster.Downloads DESCEXEC sp_xml_removedocument @intDocHandle ENDGOHow can I access the number of rows returned by this stored procedure?Thanks,James
View 3 Replies View RelatedHow do I tell when there is no more data to read in a SQLDataReader?
For example, I have an open datareader that I pass into a function that MIGHT still have a valid row in it when it returns from the function. How do I tell? I can't do a read() because then that current record will go away. I need to be able to tell if there is a current record without doing another read.
TIA,
Say I have this SQL query running into an SqlDataReader select TaskName, TaskDescription from tblTasks where TaskID = 5 There are two different ways to get the data out of the reader (maybe more) TaskName.Text = Reader.GetString(0);andTaskName.Text = Reader.GetString(Reader.GetOrdinal("TaskName")); My question is, is there a major difference in terms of efficiency between these two? The second one is definitely more robuts (in a situation where you are calling a stored procedure, and the stored procedure might change, etc) but the first one has fewer operations. Is the increase in robustness of the second one worth the potential performance hit, if any? Thank you, -Madrak
View 2 Replies View RelatedMay I know what is the purpose of having SqlDataReader in Example A? I can see the same output when I tried out both. Should I use Example A or Example B? Currently, I'm using Example B since it is lesser code.Example A Dim objDR As SqlDataReader 'Create Data Reader
LoginConn.Open()
strSQL = "SELECT CountryID, CountryName FROM Country ORDER BY CountryName "
cmd = New SqlCommand(strSQL, LoginConn) objDR = cmd.ExecuteReader() 'Populate the DataReader ddlNationality.DataSource = objDR ddlNationality.DataBind() ddlNationality.SelectedValue = dvUserProfile.Item(0)("Nationality")LoginConn.Close() Example BLoginConn.Open() strSQL = "SELECT CountryID, CountryName FROM Country ORDER BY CountryName " cmd = New SqlCommand(strSQL, LoginConn) ddlNationality.DataSource = cmd.ExecuteReader() 'Populate the DataReader ddlNationality.DataBind() ddlNationality.SelectedValue = dvUserProfile.Item(0)("Nationality")LoginConn.Close()
Hello every one and happy new year...
i have a problem with SqlDataReader used in asp.net application:
I defined a public object of SqlDataReader and assigned it the resultset of a query,
well, this happened ,lets say in page 1# but whan i want to use this datareader in another page
it keeps telling my that the reader is closed so i can't abstract information from, regarding that i used it's methods such "Read()" and "NextResult()"
but there is no use, what should i do, help me please !!!!!?
Hello im fairly new to ASP.Net and have a problem with an Intranet Page I am creating. In this part of the page I want to retrive a value from an SQL Table based on criteria and then store it as a variable to be used elsewhere on my page. I have tried using the SQL Data reader to retrive the value but somewhere in my code I am going wrong. Can anyone advise me on this please? See code below
My Visual Studio debugger has point out that there is a problem with my r = cmd.ExecuteReader() line
Oh and the connection to my SQL database is opened further up the page from this code.
Dim strSQL As String = "SELECT top 1 OrderID FROM tblStationeryOrder WHERE ORDERMADEBY = '" & lstUsers.SelectedValue & "' ORDER BY OrderID DESC"Dim cmd As New System.Data.SqlClient.SqlCommand
cmd.CommandText = strSQLDim r As System.Data.SqlClient.SqlDataReader
r = cmd.ExecuteReader()Do While r.Read()
Dim OrderID As Integer = r!OrderID
Exit Do
I found this tutorial at C# Station called "Reading Data with the SqlDataReader".
In my code behind file I followed what I think the tutorial was telling me to do but I keep getting a syntax error near '='
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near '='. (Line 45: rdr = cmd.ExecuteReader();)
Heres my code:
protected void Page_Load(object sender, EventArgs e) { this.lblDate.Text = DateTime.Today.ToString("d"); string username; username = Convert.ToString(Session["usr"]); SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["csSecurity"].ConnectionString); SqlDataReader rdr = null; SqlCommand cmd = new SqlCommand("SELECT PROG_OFF FROM Logon_Table WHERE usr = " + username, conn); try { conn.Open(); rdr = cmd.ExecuteReader(); }
Any suggestions here would be great. Any links to tutorials you know of would be helpful also.
Thanks
good afternoon everybody
this is my code: and their is an error ,,really dunno where and why coz it seems logical to me :)Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If RadioButton1.Checked = True Then
Dim admin As Stringadmin = "SELECT * from ADMINISTRATOR where UserName='" & TextBox1.Text & "' and UserPassword='" & TextBox2.Text & "'"
Dim sConnect As String = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True"Dim cnt As New SqlConnection
cnt.ConnectionString = sConnect
cnt.Open()Dim com As New SqlCommand
com.Connection = cnt
com.CommandText = adminerror!!>>>>Dim rd As SqlDataReader
rd = com.ExecuteReader
If rd.Read ThenSession("admn") = rd("UserName")Session("id") = rd("UserID")
rd.Close()
cnt.Close()Response.Redirect("~/adminpage.aspx")
ElseSession("admn") = 0
Label3.Visible = True
rd.Close()
cnt.Close()
End If
Else
Dim instrct As Stringinstrct = "SELECT * from instructor where name='" & TextBox1.Text & "' and passs='" & TextBox2.Text & "'"
Dim sConnect As String = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True"Dim con As New SqlConnection
con.ConnectionString = sConnect
con.Open()Dim com As New SqlCommand
com.Connection = con
com.CommandText = instrctDim r As SqlDataReader
r = com.ExecuteReader
If r.Read ThenSession("inst") = r("inst_name")
r.Close()
con.Close()Response.Redirect("~/instructorpage.aspx?id=" & Session("inst"))
ElseSession("inst") = 0
Label3.Visible = True
r.Close()
con.Close()
End If
End If
End Sub
-----------------
this is the error line:
The data types text and varchar are incompatible in the equal to operator.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: The data types text and varchar are incompatible in the equal to operator....
so,,,any suggestions?
I have an sp, which has 2 select statements, so iam using a sqldatareader and binding the data to a dropdown.
the first binding is fine, but when i say dataReader.NextResult(), It is null.It says the reader is closed. Can any one tell a work around for this.
thanx in advance,
Anil Kumar.
see ths code. please
== DAL ==
public static SqlDataReader ExecuteReader(SqlParameter param, string sp) { using (conn = new SqlConnection(connectString)) { SqlDataReader sdr = null; try { conn.Open();
comm = new SqlCommand(); comm.CommandText = sp; comm.CommandType = CommandType.StoredProcedure; comm.Connection = conn; comm.Parameters.Add(param); sdr = comm.ExecuteReader(CommandBehavior.CloseConnection); } catch(SqlException e) { WriteToLog(e.Message); } return sdr; } }
and, call above ExecuteReader() flowing this,
== BL ==
public UserEntity GetUserInformation(string UID, string sp) { UserEntity ue = new UserEntity();
SqlParameter userUID = new SqlParameter("@USR_ID", SqlDbType.VarChar, 20); userUID.Value = UID;
using (SqlDataReader sdr = DbHelper.ExecuteReader(userUID, "SP_GETUSERINFORMATION")) { if (sdr != null) { while (sdr.Read()) { ue.UserId = sdr["lecture_usr_id"].ToString(); ue.UserName = sdr["lecture_usr_realname"].ToString(); ue.Email = sdr["lecture_usr_email"].ToString(); ue.Phone = sdr["lecture_usr_phone"].ToString(); ue.Lastlogin = (DateTime)sdr["lecture_usr_lastlogin"]; ue.SignDate = (DateTime)sdr["lecture_usr_signdate"]; } } return ue; } }
error message is,
Invalid attempt to call Read when reader is closed.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Invalid attempt to call Read when reader is closed.Source Error:
Line 77: if (sdr != null)
Line 78: {
Line 79: while (sdr.Read())
Line 80: {
Line 81: ue.UserId = sdr["lecture_usr_id"].ToString();Source File: C:Users
aphyrDocumentsVisual Studio 2008ProjectslectureBusinessLogicUserManager.cs Line: 77
I can't understand!!! I try to debuging!!! but, I don't know.
please help me!
suppose I have a data reader which is returned by excuting a command "SELECT [xxx], [yyy], FROM [zzz]" , then I reads the data as normal. while I am reading , there is another thread that excute an insert command to that table , does this insertion effect the order of data that I am reading?
View 5 Replies View RelatedI have an SP that returns a result set that contains a tinyint. My problem is that, when I try and access this value using GetInt16 (or 32), I get an error saying that "Specified cast is not valid". TinyInt is 1 byte, or 8 bits. GetInt16 'Gets the value of the specified column as a 16-bit unsigned integer'. I am assuming that this is the root cause of my problem. But, there doesn't seem to be a GetInt8 ?! Any ideas?
Thanks, Martin
hi..i am kind of new to asp.net n having trouble with the SqlException error message.. n this code works as 1st page pass the id to second page and the second page took the id to execute the query..i dun know the wer the error occurs..can give a help..Thanks.
private void Page_Load(object sender, System.EventArgs e)
{
SqlConnection connection = null;
SqlCommand command = null;
string sqlConnection = null;
string sql = null;
string ab = null;
sqlConnection = ConfigurationSettings.AppSettings["MSQLConnectionString"];
connection = new SqlConnection(sqlConnection);
if (!Page.IsPostBack)
{
try
{
if (Request.QueryString["categoryID"] == null)
{
}
else
{
ab= Request.QueryString["categoryID"].ToString(); //getting the id from page that pass this values
sql = "Select groupname, categoryid, description from groups where groups.categoryid=?"; // can this query execute?
command = new SqlCommand(sql, connection);
connection.Open();
command.Parameters.Add(new SqlParameter("categoryid", ab));
reader = command.ExecuteReader(); // error on here "SqlException"
while (reader.Read())
{
group.InnerText = reader["groupname"].ToString();
desc.InnerText = reader["description"].ToString();
}
}
}
finally
{
if (reader != null)
{
reader.Close();
}
if (connection != null)
{
connection.Close();
}
}
}
Hello:
I am running into an issue with RS2k PDF export.
Case: Exporting Report to PDF/Printing/TIFF
Report: Contains 1 table with 19 Columns. 1 column is static, the other 18 are visible at the users descretion. Report when printed/exported to pdf spans 2 pages naturally, 16 on the first page, 3 on the second, and the column widths have been adjusted to provide a perfect page span .
User A elects to hide two of the columns, and show the rest. The report complies and the viewable version is perfect, the excel export is perfect.. the PDF export on the first page causes every fith column, starting with the last column that was hidden to be expanded to take up additional width. On the spanned page, it renders the first column on that page correctly, then there is a white space gap equal to the width of the hidden columns and then the rest of the cells show with the last column expanded to take up the same width that the original 2 columns were going to take up, plus its width.
We have tried several different settings to see if it helps this issue or makes it worse. So far cangrow/canshrink/keep together have made no impact. It is not possible to increase the page size due to limited page size selection availablility for the client. There are far too many combinations of what the user can elect to show or hide to put together different tables to show and hide on the same report to remove this effect.
Any help or suggestion on this issue would be appreciated
My query is as follows:Dim CurrentDate As DateCurrentDate = "09/02/2007" MyCommand = New SqlCommand("SELECT RegisterID FROM Registers WHERE RegisterDate = @RegisterDate AND IsMorningRegister = 1", MyConn)MyCommand.Parameters.Add("@RegisterDate", Data.SqlDbType.DateTime)MyCommand.Parameters("@RegisterDate").Value = CurrentDate My DB table is called RegisterDate and is of type DateTime. The record that should be matched is: Register ID: 13 RegisterDate: 09/02/2007 09:00:00IsMorningRegister: TrueIsAfternoonRegister: False But no records are returned. Any idea why?
View 4 Replies View RelatedI am trying to access data using this code:
SqlCommand myCommand = new SqlCommand("myStoredProcedure", myConnection);
myCommand.CommandType = CommandType.StoredProcedure;
myCommand.Parameters.Add(new SqlParameter("@myID", SqlDbType.Int));
myCommand.Parameters["@myID"].Value = myIDValue;
myConnection.Open();
myDataReader = myCommand.ExecuteReader();
myTextBox.Text = myDataReader["myColumn"].ToString();
myDataReader.Close();
myConnection.Close();
I get "data reader has no data" error.
A problem with the parameter?
The stored procedure returns a row when executed from the database explorer.
I have used datasets and table adapters up to now as in the data access tutorial on this site
Any Ideas?
Thanks