"Connection must valid and open" error?

[Lauchlan M]

I get the following error. Apart from the fact that it does not make any
grammatical sense, what would be likely to be causing it?

The background is that nxCmdDeleteErrorLogItem is a delete command with the
SQL

Delete from ErrorLog where LogID = ?

and LogID is a parameter corresponding to a DB field LogID which is an
autoinc field (the parameter is set at Int32).

Thanks,

Lauchlan M

<<

Server Error in '/MyWebInterface_NexusDB' Application.
----------------------------------------------------------------------------
----

Connection must valid and open
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: Connection must valid
and open

Source Error:

Line 351: nxCmdDeleteErrorLogItem.Parameters["LogID"].Value =
dGridErrorLog.DataKeys[e.Item.ItemIndex];
Line 352: nxConnection.Open();
Line 353: nxCmdDeleteErrorLogItem.ExecuteNonQuery(); // error occurs here
Line 354: nxConnection.Close();

Source File:
e:\inetpub\wwwroot\Mywebinterface_nexusdb\admin\viewerrorlog.aspx.cs
Line: 353

Stack Trace:

[InvalidOperationException: Connection must valid and open]
NexusDB.ADOProvider.NxCommand.ExecuteNonQuery()

MyWebInterface_NexusDB.Admin.ViewErrorLog.dGridErrorLog_DeleteCommand(Object
source, DataGridCommandEventArgs e) in
e:\inetpub\wwwroot\Mywebinterface_nexusdb\admin\viewerrorlog.aspx.cs:353

System.Web.UI.WebControls.DataGrid.OnDeleteCommand(DataGridCommandEventArgs
e) +110
System.Web.UI.WebControls.DataGrid.OnBubbleEvent(Object source, EventArgs
e) +589
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.DataGridItem.OnBubbleEvent(Object source,
EventArgs e) +106
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +121

System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.Rai
sePostBackEvent(String eventArgument) +115
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +138
System.Web.UI.Page.ProcessRequestMain() +1277

 

[Lauchlan M]

Fixed