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object reference not set to an instance of object

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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 25: Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Line 26:
Line 27: con.ConnectionString = "Data Source=varun-150d9d396\sqlexpress;Initial Catalog=user;Integrated Security=True;Pooling=False"
Line 28: con.Open()
Line 29: pr = DropDownList1.SelectedValue


Source File: C:\Documents and Settings\V A R U N S\My Documents\Visual Studio 2005\WebSites\home\newb.aspx.vb Line: 27

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
newb.Button1_Click(Object sender, EventArgs e) in C:\Documents and Settings\V A R U N S\My Documents\Visual Studio 2005\WebSites\home\newb.aspx.vb:27
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +96
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument) +116
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +31
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +32
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +72
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3838


Can any one help me i can proceed becoz of this error
Feb 21 '08 #1
1 1357
jeffstl
432 Recognized Expert Contributor
This is a compilation error for ASP.NET

Post in the .NET forum for better answers. Off the top of my head though it seems like you connection string is probably wrong. It might also depend if your server is running ASP.NET 1.0 or 2.0 for what kind of connection string you will need. I think I had problems until I realized this too.
Feb 21 '08 #2

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