The error that you are receiving is due to the fact that you are using FormTemplate
for your editing and the EditManager
could not be used in such scenario, because there is no relationship between the grid columns and the controls within the FormTemplate
. When FormTemplate
is used, in order to get obtain certain values you will have to manually get reference to each control by using FindControl
() from the edit item.
Detailed information on this matter could be found in the following help article:
Hope this helps.
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