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You either never assigned something to the variable, never created an instance of the value assigned to the variable, or you set the variable equal to Nothing/null manually, or you called a function that set the variable to Nothing/null for you. You don’t have to use the “new” keyword, but by default the value is Nothing/null.You would have to at least initialize to a = String. Again, this is code that C# will not compile, but VB. Same as a string, any reference type must be initialized.Net: You are trying to use a reference variable who’s value is Nothing/null.

Here is the code snippet for grid and SQL data source control: Analyzing the queries: Now, before you run the application, lets get ready to trace the SQL queries that get executed. Start the express profiler – Set the server details, select the authentication mechanism and finally select the events you want to trace.

So they were thinking that paging is happening correctly but still why is the add new row scenario slow.

So this made me to delve little bit deeper into what exactly is happening in this scenario.

This is a complete working example of how to code a Rad Window that is attached to a Rad Grid.

Clicking on a link in the grid row will open a popup form that allows the data to be edited, clicking update will update the underlying data table and update the grid using AJAX.

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