If that's the case, press back in your browser and remove the HTML tags from the code.

gridview fired event rowupdating which wasn t handled-64

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NET forums is how to deal with exceptions like The Grid View 'Grid View1' fired event Row Editing which wasn't handled.

The Grid View 'Grid View1' fired event Page Index Changing which wasn't handled.

The Grid View 'Grid View1' fired event Sorting which wasn't handled.

The Grid View 'Grid View1' fired event Row Deleting which wasn't handled. When I say manually databinding I mean not using a data source control specified as a Data Source ID, but rather setting the Grid View’s Data Source equal to the appropriate data object and calling Data Bind. NET 2.0 are familiar with how to deal with this, but since ASP.NET 2.0 most of the examples and tutorials deal with setting the Data Source ID, which buys you a lot of automation that you may not even appreciate unless you’ve done this the old fashioned way. Things that look HTML include (X)HTML, obviously, XML, ASP. However, there's a fair chance things broke down because you tried to post something that looks like HTML in either a comment below an article, on the Contact Me page or in the Search boxes. The error has been logged and I'm trying hard to correct it.NET markup and c# generics syntax as all of them use the characters.