Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 130:            Dim CommandText As String
Line 131:			CommandText = "SELECT * FROM " & TableName & "_Class WHERE Show = 1 AND ID=@CatID"
Line 132:            oCmd.Parameters.AddWithValue("@CatID", Request("CatID").ToString.Replace("'", "").Replace("--", ""))
Line 133:            oCmd.CommandText = CommandText
Line 134:            Try

Source File: D:\WebFiles\JEM建舜電子2023\Ct0003_detail.aspx.vb    Line: 132

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   _Ct0003_detail.Page_Load(Object sender, EventArgs e) in D:\WebFiles\JEM建舜電子2023\Ct0003_detail.aspx.vb:132
   System.Web.UI.Control.OnLoad(EventArgs e) +107
   System.Web.UI.Control.LoadRecursive() +89
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4465.0