.NET 2005 TRY..CATCH With SQL RAISERROR Not Catching
May 28, 2008
Is there a reason why the following code does not raise an error in my .NET 2005 application? Basically I have a try..catch in my stored procedure. Then I have a try...catch in my .NET application that I want to display the error message.
But, when the stored proc raisses the error, the .net code doesn't raise it's error. The .NET code DOES raise an error if I remove the try..catch from the SQL proc and let it error (no error handling), but not if I catch the error and then use RAISERROR to bubble-up the error to .NET app. (I really need to catch the error in my SQL proc and rollback the transaction before I raise the error up to my .NET app...)
SQL
BEGIN TRYBEGIN TRANSACTION trnName
DO MY STUFF.... <---- Error raisedCOMMIT TRANSACTION trnName
END TRY
BEGIN CATCHROLLBACK TRANSACTION trnName
RAISERROR('There was an error',10,1)
END CATCH
ASP.NET CODE (No error raised)
Try
daAdapter.SelectCommand.ExecuteNonQuery()Catch ex As SqlException
Hi. I am executing a stored procedure. The stored procedure raises an error and all I need is to catch this error. Pretty simple, but it only works with an ExecuteNonQuery and not with an Executereader statement. Can anybody explain to me why this happens?
Here's the sp:
CREATE PROCEDURE dbo.rel_test AS select 1 raiserror ('My error.', 11, 2) return GO
Here's the ASP.Net page:
<% @Page Language="VB" debug="True" %> <% @Import Namespace="System.Data.SqlClient" %> <script runat="server"> Public Function RunSP(ByVal strSP As String) As SqlDataReader Dim o_conn as SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("connectionstring")) AddHandler o_conn.InfoMessage, New SqlInfoMessageEventHandler(AddressOf OnInfoMessage)
o_conn.Open
Dim cmd As New SqlCommand(strSP, o_conn) cmd.CommandType = System.Data.CommandType.StoredProcedure Dim rdr as SqlDataReader = cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection) rdr.Close() cmd.Dispose()
Response.Write(o_conn.State)
End Function
Private Sub OnInfoMessage(sender as Object, args as SqlInfoMessageEventArgs) Dim err As SqlError For Each err In args.Errors Response.Write(String.Format("The {0} has received a severity {1}, state {2} error number {3}" & _ "on line {4} of procedure {5} on server {6}:{7}", _ err.Source, err.Class, err.State, err.Number, err.LineNumber, _ err.Procedure, err.Server, err.Message)) Next End Sub
Sub Page_Load(sender as Object, e as EventArgs) RunSP("rel_test") End Sub </script>
I guess this is a common problem because I ran into a lot of threads concerning the matter. Unfortunately, none of them helped my situation.I am throw a RAISERROR() in my sql and my vb.net try catch block is not detecting an error. SELECT '3' RAISERROR('testerror',10,5) Dim con As New SqlConnection Dim _sqlcommand As New SqlCommand con = New SqlConnection(Spiritopedia.Web.Globals.Settings.General.ConnectionString) _sqlcommand.CommandType = Data.CommandType.StoredProcedure _sqlcommand.CommandText = "TestFunction" _sqlcommand.Connection = con
'The value to be returned Dim value As New Object 'Execute the command making sure the connection gets closed in the end
Try
'Open the connection of the command _sqlcommand.Connection.Open() 'Execute the command and get the number of affected rows 'value = _sqlcommand.ExecuteScalar().ToString()
value = _sqlcommand.ExecuteScalar()
Catch ex As SqlException Throw ex Finally
'Close the connection _sqlcommand.Connection.Close() End Try
Note that in the sp_executesql statement, the @ret variable from the dynamic SQL gets assigned to the local variable @retVal.
Here's the problem; when the procedure [log].[Log.SetSeverityLevel] that gets dynamically executed does a RAISERROR, the code in [dbo].[ProcedureTest] falls through to the catch block in [dbo].[ProcedureTest] as it should, but the value of @retVal is null in the catch block, when the return code in [log].[Log.SetSeverityLevel] is set to -1.
If you comment out BEGIN TRY / END TRY / BEGIN CATCH / END CATCH in [dbo].[ProcedureTest], the value of @retVal is correctly seen as -1. There's something about the TRY CATCH structure that's blowing away @retVal when an error is raised and it falls through to the CATCH block.
Anybody ever seen this before? Is there a workaround?
I'm having trouble with a Script Component in a data flow task. I have code that does a SqlCommand.ExecuteReader() call that throws an 'Object reference not set to an instance of an object' error. Thing is, the SqlCommand.ExecuteReader() call is already inside a Try..Catch block. Essentially I have two questions regarding this error:
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In the above code when an error is raised in the transaction trans2 the immediate catch is not invoked where as the outer catch is being invoked. I dont know y?. Can anybody help. Thanx
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my problem catch does not catch the error. There is no way to find out teh what is causing this error
SqlCeConnection sqlcon = new SqlCeConnection("
Data Source = '\Program Files\HISSymbol\HISSymboldb.sdf';"
);
SqlCeCommand sqlcmd = new SqlCeCommand();
sqlcmd.CommandText = Insert into company('AA', 'Lower Plenty Hotel');
sqlcmd.Connection = sqlcon;
SqlCeDataReader sqldr = null;
try
{
sqlcon.Open();
//use nonquery if result is not needed
sqlcmd.ExecuteNonQuery(); // application crashes here
}
catch (Exception e)
{
base.myErrorMsg = e.ToString();
}
finally
{
if (sqlcon != null)
{
if (sqlcon.State != System.Data.ConnectionState.Closed)
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Here is a piece of my SP inside SQL Server that shows the returned values:
… SELECT @Id = SCOPE_IDENTITY() SELECT @Id AS user_id SELECT 1 AS Value END GO
In my aspx page I am trying to call the first value like this:
Dim nID CmdInsert.Parameters.Add(New SqlParameter("@RETURN_VALUE", SqlDbType.bigint, 8, "user_id")) CmdInsert.Parameters("@RETURN_VALUE").Direction = ParameterDirection.ReturnValue CmdInsert.Parameters("@RETURN_VALUE").Value = nID
And to check if the right value is returned I use:
strConnection.open() cmdInsert.ExecuteNonQuery 'Set the value of a textbox ident.text = nID strConnection.close()
But now no value appears in the textbox, How can I achieve it? What is wrong?
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DECLARE @Server [nchar] (100) SET @Server = (CONVERT(char(100), (SELECT SERVERPROPERTY('Servername'))))
INSERT INTO [tempdb].[dbo].[User_Auditing] (Server, UserName, WinAuth, SQL_Auth_UserName, PassPolicyOn) SELECT @Server, s.name, isntuser, q.name, is_policy_checked FROM sys.syslogins s FULL OUTER JOIN sys.sql_logins q ON (s.name = q.name)
The errors I would get are as follows...
Msg 208, Level 16, State 1, Line 4 Invalid object name 'sys.syslogins'. Msg 208, Level 16, State 1, Line 4 Invalid object name 'sys.sql_logins'.
I know in Java, I would just put a try before the declare and a catch("Invalid object name") after the statement, however, I'm not sure if this is even possible in T-SQL. Thanks for any help. -Kyle
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Thanks in advance all comments are much appreciated!
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