Datagrid Nested Issue

Question

Hi,

I code a Nested datagrid, using VS 2010, but i am getting error:"Object Reference not set to an instance of an object"; so any body can explain me how i can set this issue: I am using

data.Relations.Add(

"Details", data.Tables("Customer").Columns("CID"), data.Tables("Payment").Columns("CID"))

Regards

Shoaib

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ShoaibA Shaikh

Answer 1

Make sure the TableName and ColumnName in the parameter are correct. Possibly "data" dataset doesn't contain table with name Customer or Payment. Try debugging the two parameters.

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Gaurav Khanna | Microsoft VB.NET MVP

Answer 2

Hi Shoaib,

This error message means the code is trying to access a member of a reference type variable that is set to null. Please debug your code and make sure all the objects used are not null.

I think this article can make it clearer:

http://blogs.msdn.com/b/csharpfaq/archive/2004/05/06/why-do-i-get-the-error-object-reference-not-set-to-an-instance-of-an-object.aspx 

Best Regards,

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Bob Wu [MSFT]
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