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Editorial Team
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Asked: 2026-05-15T07:05:57+00:00

I have a simpleAsp.net page which I make it Ajaxable. everything works fine but

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I have a simpleAsp.net page which I make it Ajaxable. everything works fine but I face with a problem whenever a specific method calls.

Actually the Browser tell me that 

  Sys.WebForms.PageRequestManagerServerErrorException: Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.WebControl'.

I do not know how to resolve it. Any help appriciates.

Update : here is the code : I’ll remove this section after getting answer

I removd the code because there were no answer

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1 Answer

  1. Editorial Team

    As I put the codes. and I work with this issue I found that when I use TemplateColumn for Edit/Update/Cancel/Delete and Select I face with this problem, so I change TemplateColumn to ButtonColumn and issue resolved

    Thank you all

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