Concurrency violation error

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Hello

in this code:

C#

SqlConnection CON1 = new SqlConnection();
CON1.ConnectionString = DATAPROVIDER.DataProvider.ConnectionString;
CON1.Open();
SqlCommand b21 = new SqlCommand("select * from " + DetailTableName);
GridEXTable _table1 = ((GridEX)ChildControl).RootTable;
SqlDataAdapter sda1 = new SqlDataAdapter(b21.CommandText, CON1);
SqlCommandBuilder cmb1 = new SqlCommandBuilder(sda1);
cmb1.GetDeleteCommand();
sda1.Update(table);
CON1.Close();

I recieve this error:

Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.

Please help me.
Thanks

Posted 15-Aug-11 1:12am

Saman With You

Updated 15-Aug-11 1:14am

Simon Bang Terkildsen

v2

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#realJSOP · Answer 1 · 2011-08-15T01:16:00

Solution 1

You're probably trying to update a row that doesn't exist.

If you google the error message, you'll get over 7700 results back.

This one [^] is pretty useful.

Posted 15-Aug-11 1:16am

#realJSOP

Simon Bang Terkildsen · Answer 2 · 2011-08-15T01:19:00

Solution 2

this occours when you're trying to update or delete a record that cannot be found, it could have been deleted or you're using concurrency.

Posted 15-Aug-11 1:19am

Simon Bang Terkildsen

Wendelius · Answer 3 · 2011-08-15T06:57:00

As already said this is typically a situation where the adapter cannot find a row to update. However, in your code you call the update of the dataadapter for variable table. However in the code you posted, you don't seem to fill this table at all? Also you don't make any modifications to the table.

Are you referencing a correct variable or is something missing from the post?

As a side-note the GetDeleteCommand seems pointless since you don't put the returning object to any variable.