hi,
I have my database stored in the sqlserver 2005. Using the table name i am retrieving the table and it is displayed to the user in the form of datagridview.I am allowing the user to modify the contents of the table, including the headers. Is it possible for me to update the table straightway rather than giving a sql update command for each and every row of the table .
Pls reply asap....
-Sweety
Can you use a DataTable to update an SQL Table and can it be done in a batch UPDATE as opposed to incrementing through every row using a stored procedure similar to UPDATE SQLTable SET Position = @Position WHERE ID = @ID?
View 3 Replies View RelatedI'm importing XML file into DataTable and need to Insert Data into SQL Table.
I'm not sure if its posible to take a DataTable with Data and insert into DataAdapter. From there i wanted to update SQL using TableAdapter?
Any Tips?
Thanks,
Imagine the following scenario: two tables (say, "requests" and "details") are joined in a 1:n relationship on MSSQL 2008. Both tables contain an ID (autoincrement field) and a timestamp field for proper concurrency management. Data access in the frontend is provided by a typed dataset in VS 2010. There are SPs on the server which select, update, insert or delete data in each of the two tables (so, 8 SPs alltogether: uspRequestsSelect, uspDetailsInsert etc.). These SPs are used for data access in the dataset. The GUI is a Windows form with 2 datagridviews, one for request datatable and one for the child-relation-based datatable FK_request_details. So, each request shows its details. The form works well so far.
Now, trouble strikes. A business rule says: "the first details row of a request (=row with lowest ID) always has a 0 in column "additional fee". For additional detail rows, this field has to be set to constant value 45". In short: the first detail row of each request is free, second and later details are charged 45 €.
So, I created a SP "uspRequestFeeManager", which recalculates all (!) detail rows of a request. This SP is called in uspDetailsInsert, uspDetailsUpdate and uspDetailsDelete, as each of this cases causes the additional fee to be recalculated for all rows (as rowcount can change). In Management Studio, this works as well!
But: as the uspRequestFeeManager changes data even for rows the user did NOT touch, there's a concurrency exception in my frontend in the following case:
In a request with 2 detail rows (first row has fee = 0, second = 45), the user deletes the row with fee = 0. Committing via TableAdapterManager calls uspDetailsDelete, which calls uspRequestFeeManager, which sets the remaining single details row to a fee value of 0 (which is correct!). This causes TableAdapterManager.UpdateAll to fail ("concurrency exception; delete command has handled 0 of 1 expected records"), as uspRequestFeeManager has "edited" a row which the user didn't touch, and thus updated its timestamp as well. So, the list is out of sync.
The uspRequestFeeManager looked like a good idea... but it seems not to be.
Approach would be: instead of calling the uspRequestFeeManager from within the SP, call it programmatically after TableAfterManager.UpdateAll, and after that, 're-fill' the details datatable with the updated data. But that would transfer business logic from server to client. I don't like that...
Filling a DataTable from SqlQuery : If SqlQuery returns some null values problem ocurrs with DataTable.
Is it possible using DataTable with some null values in it?
Thanks
I have a table called emp
1eno enamedesgsal
1aaamanager20000
2bbbexecutive15000
3ccchr25000
4dddceo45000
using single update statement , how can i update the salary based on the desg .i have to give hike if its manager sal =sal+(sal*0.10) .like this
Thanks & Regards
Zakeer
I am having a heck of a time getting an UPDATE statement to work. Can anyone point out what it is I'm doing wrong? Here is my statement......
strSQL = "UPDATE tbl-Pnumber_list SET Project_Title = 'success' WHERE ID = @IDParam"
Thanks!
Eugh
Hello, I'm new to the site, I've been trying to find help and i hope this is the right place.
In my MySQL database i have a table 'A' with a colum called 'Description'. Inside 'Description' there is some text and a link to a page. I have over 2500 Description fields and all have the same link inside but i need to change that link to a new one and i dont know how to update the description column with the new link. I know how to change just everything in it but its like this:
text text text text link
so how do i just change the link in the description column.
Anyone?
thanks in advance.
Below is my table structure:
CREATE TABLE [reports].[MDC_DRG](
[InsDrgMdc] [nvarchar](50) NULL,
[InsDrgMdcDesc] [nvarchar](50) NULL,
[MDC] [nvarchar](100) NULL,
[Drg] [nvarchar](50) NULL,
[DrgDesc] [nvarchar](255) NULL,
[AnyDx] [nvarchar](100) NULL,
[Cases] [decimal](18, 0) NULL,
[IntOOS] [int] NOT NULL,
[ChronicOther] [nvarchar](50) NULL
) ON [PRIMARY]
Here is a sample select from the AnyDx field:
AnyDx
,85225,85225,5304 ,5181 ,80501,E8190,3485,
,1983 ,1983 ,49121,1625 ,34550,79381,78079,30001,V1,
,2396 ,2396 ,78039,311,
,33390,33390,31401,49390,
,3410,3410,2768,3051,72293,V146,V4579,V1041,
,43491,43491,25000,4019 ,V1581,
,43491,43491,25000,4919 ,3569 ,4019 ,72252,78650,71,
,43491,43491,2768,30590,34290,4019,V146,7845,2724,2,
,43491,43491,34290,40290,25000,7843,7872,41401,4278,
,43491,43491,412 ,25000,41401,4019 ,2724 ,29680,V1,
I need to issue an update statement to the ChronicOther field. If the range below is in the AnyDx field, then I want the ChronicOther field to say "Chronic", if not then I want it to say "Other".
where AnyDx between '25000' and '25091'
or AnyDx between '41400' and '41406'
or AnyDx between '42800' and '42890'
or AnyDx between '40100' and '40291'
or AnyDx between '34200' and '34292'
or AnyDx between '14000' and '19910'
or AnyDx between '49600' and '49600'
or AnyDx between '27240' and '27240')
My problem is what is the best way to look for this range (below) in the AnyDx field without multiple like statements?
example:
Update reports.MDC_DRG
SET ChronicOther = CASE When AnyDx like ('%,25000,%') Then 'Chronic' Else 'Other'
etc., etc.....
Per my client, when it creates the qualifier for 'HCPS-DEN"' it needs to create the qualifier as 'AD' not 'HC' . Currently, with the present update script its inserting 'HC' on all. I need it to say when the 'HCPS-DEN' is used, insert the 'AD' not 'HC'. Everything else should be the HC.
I tried using a CASE statement:
CASE WHEN Description = 'HCPC - DEN' THEN 'AD' ELSE 'HC' END
however I get this back:
Msg 207, Level 16, State 1, Line 10
Invalid column name 'Description'.
I was trying to plug this part in where HC is being entered. I think its missing an obvious Join or maybe there is a better way to write this. Any help is greatly appreciated!!
declare @qualid int
if 1=1
BEGIN
if not exists (select * from medlists where tablename='ProcedureCodeQualifier' and Description = 'HCPC - DEN')
begin
declare @listorder int
select @listorder=max(listorder)+1 from medlists where tablename='ProcedureCodeQualifier'
insert into medlists
select 'ProcedureCodeQualifier',NULL,'HC','HCPC - DEN',@listorder,NULL,NULL,NULL,NULL,NULL,NULL,NULL,@listorder,getdate(),'CYSScript',getdate(),dbo.GetLogonId()
update medlists set dotid=medlistsid where medlistsid=scope_identity()
end
select @qualid=medlistsid from medlists where tablename='ProcedureCodeQualifier' and Description = 'HCPC - DEN'
update procedures set CPTProcedureCodeQualifierMId=@qualid where proceduresid in (8634)
END
ELSE
BEGIN
select @qualid =(select top 1 medlistsid from medlists where tablename='ProcedureCodeQualifier' and Description like 'Health Care Financing Administration Common Procedural Coding System (HCPCS) Codes%')
update procedures set CPTProcedureCodeQualifierMId=@qualid where proceduresid in (8634)
END
Hello,
I am trying to update a table based on values that I have imported into a temporary table. Basically I have a list of lab codes (EMR_temp_labtest_configupdate) and each lab has a zseg code tied to it. The definitions for zseg code are in a separate table called (EMR_zseg_code_descriptions)
I need to update the lab_test_add_conf to add in each lab code that does not have any configuration information (not exists in lab_test_add_conf) based on the zsegcode.
For example a zsegcode (defined in the emr_zseg_code_descriptions table) is ZBL and the lab code 003277 fits into the zseg category according to the temp table. For each lab code that first into the ZBL category a row needs to be inserted for
Example of table data:
emr_temp_labtest_config
labtestcode, zsegcode
003277, ZBL
emr_zseg_code_descriptions
zsegcode, valuecode
ZBL, PATRAC
ZBL, HERITG
I want to look at the data in the temp table and determine which category it is in and then insert into the lab_test_add_conf table a row for each lab test each zseg table value code that exists.
My Final Goal:
lab_test_add_conf:
lab test code, valuecode
003277, PATRAC
003277, HERITG
I know I need to do an update statement but I am not sure how to set up the SET statement or if there is anythign that I need to take into consideration. Here is my code so far.....any thoughts?
select a.labtestcode
from EMR_temp_labtest_configupdate a
Where Not Exists
(Select *
From lab_test_add_conf b
where a.labtestcode = b.labtest_key)
update table lab_test_add_conf
select a.labtestcode,b.zsegcode,b.valuecode,b.valuedesc,b.valuetype,b.units,
b.tablename,b.fieldname
from EMR_temp_labtest_configupdate a
join emr_zseg_code_descriptions b on a.zsegcode = b.zsegcode
Hi AllI am updating a local table based on inner join between local tableand remote table.Update LocalTableSET Field1 = B.Field1FROM LinkedServer.dbname.dbo.RemoteTable BINNER JOIN LocalTable AON B.Field2 = A.Field2AND B.Field3 = A.Field3This query takes 18 minutes to run.I am hoping to speed up the process by writing in OPENQUERY syntax.ThanksRS
View 1 Replies View RelatedPer my client, when it creates the qualifier for 'HCPS-DEN"' it needs to create the qualifier as 'AD' not 'HC'. Currently, with the present update script its inserting 'HC' on all. I need it to say when the 'HCPS-DEN' is used, insert the 'AD' not 'HC'. Everything else should be the HC.
I tried using a CASE statement:
CASE WHEN Description = 'HCPC - DEN' THEN 'AD' ELSE 'HC' END
however I get this back:
Msg 207, Level 16, State 1, Line 10
Invalid column name 'Description'.
I was trying to plug this part in where HC is being entered. I think its missing an obvious Join or maybe there is a better way to write this. Description is being used after the first BEGIN. I know it needs to also go into my insert somehow, but I'm not sure how or if there is an easier way to do this. Any help is greatly appreciated!!
declare @qualid int
if 1=1
BEGIN
if not exists (select * from medlists where tablename='ProcedureCodeQualifier' and Description = 'HCPC - DEN')
begin
declare @listorder int
select @listorder=max(listorder)+1 from medlists where tablename='ProcedureCodeQualifier'
insert into medlists
select 'ProcedureCodeQualifier',NULL,'HC','HCPC - DEN',@listorder,NULL,NULL,NULL,NULL,NULL,NULL,NULL,@listorder,getdate(),'CYSScript',getdate(),dbo.GetLogonId()
update medlists set dotid=medlistsid where medlistsid=scope_identity()
end
select @qualid=medlistsid from medlists where tablename='ProcedureCodeQualifier' and Description = 'HCPC - DEN'
update procedures set CPTProcedureCodeQualifierMId=@qualid where proceduresid in (8634)
END
ELSE
BEGIN
select @qualid =(select top 1 medlistsid from medlists where tablename='ProcedureCodeQualifier' and Description like 'Health Care Financing Administration Common Procedural Coding System (HCPCS) Codes%')
update procedures set CPTProcedureCodeQualifierMId=@qualid where proceduresid in (8634)
END
Hi guys,
I am new to SQL server, but I need to develop a "big" application with it. Here's my application requirements:
1)Create a table, say TableA, in SQL server 7 or 2000 database,say DB1, based on another Oracle database,say DB2, on a remote server. Update TableA based on DB2 every day in some specific time.
2) If new records are inserted into the TableA,some other tables needed to update in DB1. At the same time, an e-mail will send to three receipts.
I have no idea of which function or method I can use to fulfill the requirements. Can any experts here give me some advice, detail explanation would be grateful.
I appreciate any help you provide.
Dogli
Hi all,
I have a situation where my Visual C# application presents a number of fields. In order to update a student object, I wish to call a stored proc. 1 or more fields can be updated... And If one is left null, then I don't want to update it, but instead I want to keep the old value.
I am really wondering if I am approaching this the right way. The following stored proc does what I want it to do, however I'm thinking there may be a faster way...
Here it is:
-- Update a student, by ID.
DROP PROCEDURE p_UpdateStudent
CREATE PROCEDURE p_UpdateStudent
@ID INT,
@NewFName VARCHAR(25),
@NewOName VARCHAR(25),
@NewLName VARCHAR(25),
@NewDOB DATETIME,
@NewENumber VARCHAR(10),
@NewContactAID INT,
@NewContactBID INT
AS
BEGIN
SET NOCOUNT ON;
-- DECLARE THE OLD VALUES
DECLARE @FName AS VARCHAR(25)
DECLARE @OName AS VARCHAR(25)
DECLARE @LName AS VARCHAR(25)
DECLARE @DOB AS DATETIME
DECLARE @ENumber AS VARCHAR(10)
DECLARE @ContactAID AS INT
DECLARE @ContactBID AS INT
-- Get all of the old values
SELECT @FName = FName FROM TBL_Student WHERE ID = 10000
SELECT @OName = OName FROM TBL_Student WHERE ID = 10000
SELECT @LName = LName FROM TBL_Student WHERE ID = 10000
SELECT @DOB = DOB FROM TBL_Student WHERE ID = 10000
SELECT @ENumber = ENumber FROM TBL_Student WHERE ID = 10000
SELECT @ContactAID = ContactAID FROM TBL_Student WHERE ID = 10000
SELECT @ContactBID = ContactBID FROM TBL_Student WHERE ID = 10000
-- USE ISNULL to set all of the new parameters to the provided values only if they are not null
-- Keep the old ones otherwise.
SET @NewFName = ISNULL(@NewFName, @FName)
SET @NewOName = ISNULL(@NewOName, @OName)
SET @NewLName = ISNULL(@NewLName, @LName)
SET @NewDOB = ISNULL(@NewDOB, @DOB)
SET @NewENumber = ISNULL(@NewENumber, @ENumber)
SET @NewContactAID = ISNULL(@NewContactAID, @ContactAID)
SET @NewContactBID = ISNULL(@NewContactBID, @ContactBID)
-- Do the update
UPDATE TBL_Student
SET FName = @NewFName,
OName = @NewOName,
LName = @NewLName,
DOB = @NewDOB,
ENumber = @NewENumber,
ContactAID = @NewContactAID,
ContactBID = @NewContactBID
WHERE
ID = @ID
END
GO
So yeah it works. But As you can see I wish to keep an old copy of the values to perform checks pre update....
Is there any faster way, or am I on the right track? I need a pro's advice :) (before i write all of my procs!!)
Thanks all.
Chris
Help -
I need to import data into an existing table. Most import rows were unique, so I had no problem using DTS and appending. However, some import rows match existing rows except for one column/field that contains updated/new data, and I have to either replace the entire row with the imported row, or replace the individual field with the new data. How do I do that when there are many rows to import? It would take forever typing in all the data using UPDATE. Thanks in advance for your help!
rb
I have successfully installed SQL Server 2005 SP1 but when I go to the "Microsoft Update" site it is still shown as required. I have tried going back to an old image of the PC and installing SQL Server 2005 and SP1 again but still the "Microsoft Update" page is not picking up the fact that SP1 has installed successfully. Anyone had the same problem or know of a fix?
Steve
Hi I am trying to use the results of a datatable as an input to a ne SQL statement.
The datatable is created and populted by the source below after previously creating MyLookupCommand
MyLookupReader = MyLookupCommand.ExecuteReader(CommandBehavior.CloseConnection)
Dim Mydatatable = New DataTable()
Mydatatable.Load(MyLookupReader)
I now create a new SQL string allong the lines of
SELECT tableA.field1 FROM TableA INNERJOIN Mydatatable ON tableA.field2 = Mydatatable.Filed9
However I get the following error
Invalid object name 'Mydatatable'.
Any suggestions on how to resolve this.
possibley of interest is that I would have like to have done this in 1 SQL but the results in Mydatatable are from a SELECT DISTINCT and Field1 is a text filed that can't be used in a DISTINCT statement, hence using two statements.
Many thanks in advance
Hi,
I'm wondering if this is possible. I want to use a datatable as a parameter in my SQL query. The error I am getting is "No mapping exists from object type System.Data.DataColumn to a known managed provider native type." Any help is appreciated.
Here is the code.
Private Function GetAvailableTutors(ByVal qualifiedTutorsDataSet As DataTable) As DataTable
Dim TutorAvailabilityDataTable As DataTable = New DataTable()
Using myConnection As New SqlConnection(ConfigurationManager.ConnectionStrings("ASC_Schedule").ConnectionString)
Dim myCommand As SqlCommand = _
New SqlCommand("SELECT TutorID, TimeIndex FROM T_Hours WHERE SessionID > 0 AND TutorID IN (@TutorList) AND DateDropped > GetDATE() ORDER By T_QualifiedTutors.TutorID", myConnection)
myCommand.Parameters.AddWithValue("@TutorList", qualifiedTutorsDataSet.Columns.Item("TutorID"))
Dim myDataAdapter3 As SqlDataAdapter = New SqlDataAdapter()
myDataAdapter3.SelectCommand = myCommand
myDataAdapter3.Fill(TutorAvailabilityDataTable)
Return TutorAvailabilityDataTable
End Using
End Function
hi all
the usual way to bid a gridview is to data soursce
is there a way to do the folowing , creat a data table from the gridview shown valus " currunt page "
thanks
Hi,
I am experimenting to make a datatable in C# code in a page. This table should be a disconected table with Only valid for the present session.
I try the following code:
public partial class Default2 : System.Web.UI.Page
{
DataTable DT = new DataTable("TEST");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataColumn Col1 = new DataColumn("Col1");
Col1.DataType = typeof(Int32);
Col1.AllowDBNull = false;
DT.Columns.Add(Col1);
DataColumn Col2 = new DataColumn("Col2");
Col2.DataType = typeof(string);
Col2.AllowDBNull = true;
DT.Columns.Add(Col2);
DataColumn Col3 = new DataColumn("Col3");
Col3.DataType = typeof(DateTime);
Col3.AllowDBNull = true;
DT.Columns.Add(Col3);
GridView1.DataSource = DT;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
for (int i = 1; i < 20; i++)
{
DataRow MyRow = DT.NewRow();
MyRow["Col1"] = i;
DT.Rows.Add(MyRow);
}
}
}
For one reason or the other. if I click the button I get the message that Col1 dus not make part of the table TEST. It turns out that there are no columns added to the table. altroug the code in the page load part has been run. I suppose I have to do something with the session state to make my DataTable persistent, but I have no idea what. Can somebody help me out?
Thanks!
Rob
Is the merge method, what will work in this case ? I have two datatables with the exact same structure. How can I append the rows from table 2 onto the bottom of table 1 ? Is looping through the rows collection the only way ?
View 2 Replies View RelatedHi,Is it possible to store data that is retrieved by SqlDataSource in a... let's say... DataTable? I mean, If I dragged and dropped a GridView and an SqlDataSource and then I set up those controls in page designer in Visual Studio, is it possible at some time later to retrieve the data retrieved by the SqlDataSource and then store the data in a DataTable?Best regards,Haris
View 7 Replies View RelatedIs there a built in way of converting a LINQ qurey result into a DataTable or DataView ?
View 4 Replies View Relatedhai This is rameshi had a small doubt in this public DataTable GetStatelist() { DataTable returnValue = null; SqlCommand selcommand = new SqlCommand(); selcommand.CommandType = CommandType.Text; selcommand.CommandText = "select * from USER_MASTER"; selcommand.Connection = _connectionobject; try { _connectionobject.Open(); DataSet ds = new DataSet(); SqlDataAdapter ada = new SqlDataAdapter(selcommand); ada.Fill(ds); _connectionobject.Close(); return returnValue; ; } catch (Exception exception) { if (_connectionobject.State == ConnectionState.Open) { _connectionobject.Close(); } throw new Exception(exception.Message); } if (_connectionobject.State == ConnectionState.Open) { _connectionobject.Close(); } return returnValue; ; } after compiling its show the return value is nullwhat is error in my codinghow i can return the value to the corresponding function if (!IsPostBack) { GridView1.DataSource=database.GetStatelist(); GridView1.DataBind(); } i am waiting for the result
View 4 Replies View RelatedI am fetching records from a table and putting in a datatable using the "sqlda.fill(datatable)"
when i see the datable in "data visualizer" i find no rows.
It is confused eventhough it does not throw any error
Do I have to save the datatable into sqldatasource's SELECT results? if yes , how?
View 4 Replies View RelatedI have a table containing prices. This table will be queried very often to provide quotes for clients.So to ease the burden on the server I want to cache the table and then just query the cached version.However it seems that I can only cache the table as a datatable. This means I have to query the datatable to get the prices for each quote.I'm not sure how to query a datatable. Is ther syntax similar to querying a SQL table?In fact is this best way to go about things?Any help would be appreciated.G
View 4 Replies View Related
Hi...
In my appllication, i am having a DataTable... For that DataTable i have to write a query for a expression... This epression is more of mathematical expression type. Here is the sample expression-
(column1 < 1 && (column2 = 2 || column3 > 5) || column4 != 3)
How i can write a query for such a equation...? Is it possible to use logical & mathematical operator in the equation & to write a query for this type of equation... Is there is any good article on this...
Thanks in adavnce...
IamHuM
I have the following: Dim ResourceAdapter As New ResourcesTableAdapters.ResourcesTableAdapter Dim dF As Data.DataTable = ResourceAdapter.GetDataByDistinct Dim numRows = dF.Rows.Count Dim dS As Data.DataTable = ResourceAdapter.CountQuery Dim sumRows = dS.Rows.Count DataList1.DataSource = dF DataList1.DataBind() LblCount.Text = numRows LblSum.Text = sumRows numRows is the number of records in a particular category. CountQuery is a method that returns the total number of records in all the categories. I don't know how to get the result of that query, the code line in bold isn't right. How do I get this number?Diane
View 5 Replies View RelatedI'm trying this code but nothing is being displayedSqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["STRING_CON"]);
SqlDataAdapter da = new SqlDataAdapter("my_sproc", conn);DataTable dt = new DataTable();
DataRow dr;
//Adding the columns to the datatabledt.Columns.Add("CategoryIdIn");
dt.Columns.Add("CategoryNameVc");foreach (DataGridItem item in gd_freq.Items)
{
dr = dt.NewRow();
dr[0] = item.Cells[0].Text;
dr[1] = item.Cells[1].Text;
dt.Rows.Add(dr);
}//ForEach
da.Fill(dt);
gd_freq.DataSource = dt;
gd_freq.DataBind();
I'm trying to use the SQL Bulk copy class to bulk import from a text file.I'm getting the following error: Line 24: bulkCopy.WriteToServer(CreateDataTableFromFile()); System.Data.SqlClient.SqlException: An error has occurred while establishing a
connection to the server. When connecting to SQL Server 2005, this failure may
be caused by the fact that under the default settings SQL Server does not allow
remote connections. (provider: Named Pipes Provider, error: 40 - Could not open
a connection to SQL Server) I've even tried to allow remote connections thro pipes and restarted the database engine but to no avail. Any inputs/suggestions?
I am quite new to ASP.net 2.0. I have had plenty of experience using ADO.net in standard windows applications.
In my app I am opening a connection to an SQL database and I am creating a DataTable without a DataSet:
Shared m_cnADONetConnection As New System.Data.SqlClient.SqlConnection
Shared m_daDataAdapter As System.Data.SqlClient.SqlDataAdapter
Shared m_rowPosition As Integer
Shared m_dtContacts As New System.Data.DataTable
I am initializing everything and filling my DataTable when the Page first Loads if it isnt a postback.Protected Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Form1.Load
If Not Page.IsPostBack Then
m_rowPosition = 0
m_cnADONetConnection.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=C:First ASP DatabaseApp_DataMyFirstDatabase.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
m_cnADONetConnection.Open()m_daDataAdapter = New System.Data.SqlClient.SqlDataAdapter("Select * From Books", m_cnADONetConnection)m_cbRefillCommand = New System.Data.SqlClient.SqlCommand
m_daDataAdapter.Fill(m_dtContacts)
Me.ShowCurrentRecord()
End IfEnd Sub
The Me.ShowCurrentRecord Sub assigns the values of the current record(row) in the DataTable via (m_rowPosition) to TextBox controls on the form:
I also have record navigation buttons on my form: << < > >> Moving me from record to record (row to row) by incrementing or decrementing m_rowPosition
All is good! I am able navigate the DataTable and the textboxes change their text properties accordingly from record to record.
The only other control on my form is a button which I'm coding its click event to save changes that I made to the current row (record) by changing the values in the textboxes then clicking save.
Here is my code:Protected Sub ButtonSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ButtonSave.Click
If m_dtContacts.Rows.Count <> 0 Then
m_dtContacts.Rows(m_rowPosition).BeginEdit()m_dtContacts.Rows(m_rowPosition)("Title") = TBTitle.Text
m_dtContacts.Rows(m_rowPosition)("Author") = TBAuthor.Textm_dtContacts.Rows(m_rowPosition)("YearPublished") = TBYearPublished.Text
m_dtContacts.Rows(m_rowPosition)("Price") = TBPrice.Textm_dtContacts.Rows(m_rowPosition)("LastReadOn") = TBLastReadOn.Textm_dtContacts.Rows(m_rowPosition)("PageCount") = TBPageCount.Text
m_dtContacts.Rows(m_rowPosition).AcceptChanges()
m_dtContacts.Rows(m_rowPosition).EndEdit()
m_dtContacts.AcceptChanges()
m_daDataAdapter.Update(m_dtContacts)
End Sub
After I click save I can navigate through my records and back to the one I just changed and updated and all is well. The changes were made in the table.
However, when I close the page and exit out of Visual Web Developer and reopen the database: THE CHANGES WERENT UPDATED!!!
This worked all the time in VB2005.net when developing a standard windows app.
Can I use the same approach I was using in my code above or am I missing something.
I have read and searched all over and what I'm thinking is that my UpdateCommand, InsertCommand, DeleteCommand, SelectCommand are empty.
Do I have to do it this way?