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The 'Specified method is not supported' and 'Updating is not supported by data source 'X' unless UpdateCommand is specified' errors occur
Grid displays empty rows in database server mode
The Click event of asp:ImageButton is not raised when the component is located inside a template
The 'Row not found or changed' error occurs
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PageRequestManagerParserErrorException: The message received from the server could not be parsed
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The Click event of asp:ImageButton is not raised when the component is located inside a template

Error Description

When ASPxGridView sends a callback, the Click event is no longer fired for asp:ImageButton placed inside the DataItemTemplate.

Solution

The asp:ImageButton registers its scripts in the PreRender event handler. The event is raised when the page performs a postback, but not when a callback is sent. Refer to the following topic for more information about callbacks: Callbacks.

To resolve this issue, you can implement any of the following workarounds:

  • Use the ASPxButton control with a background image (the BackgroundImage-ImageUrl property) instead of asp:ImageButton.
  • Set the EnableCallBacks property to false to disable callbacks and place ASPxGridView inside UpdatePanel.