Posted 05 Jul 2012
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May I ask you what exoprt format do you use for the export? What is the error that you talk about?
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Error screen shots are attached, please look into that.
ExportFormat format = ExportFormat.ExcelML;
The error you got is because you are not allowed to export '<data>' as a value. You could subscribe for the ElementExporting event of the RadGridView and remove the tags '<' and '>' from the value to be exported.
Please let me know how this works for you.
Unfortunately this is not supported. You could generate the Excel file yourself and export the data iterating through the Items collection of the GridView.