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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 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 22 '08 #1
3 1115
Shashi Sadasivan
1,435 Expert 1GB
Can you paste the code which defines the con object?

line 27: con.ConnectionString == "yada yada yada...";

the con object has not been initialised and hence is null. Due to which accessing its properties / methods will throw exceptions
Feb 22 '08 #2
dip_developer
648 Expert 512MB
post your code to have an idea.....
Feb 22 '08 #3
i got it actually i have to specify like this
Dim con as new sqlconnection
Feb 22 '08 #4

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