7 Answers, 1 is accepted
Actually, when you click on that specific area, AddingNewDataItem event will be fired. As it is cancelable, you can perform the required logic inside and stop insertion of a new item, if it fails.
Maya
the Telerik team
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Could you verify what is the exact scenario that you want to implement ? Do you want to be able to cancel insertion of a new item or you want to validate it while editing ? Do you require performing validation for all items ?
Generally, any relevant information about your exact requirements would be helpful.
Maya
the Telerik team
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You can take a look at this demo for a reference.
Maya
the Telerik team
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Generally, this statement ensures that when you remove an item, the values of the column (the indices of the items) are correctly recalculated.
Maya
the Telerik team
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