Thank you for contacting us.
Let me get straight to your questions:
1. You can hide the Add Sheet button using the IsAddButtonVisible attached property:
2. Currently, RadSpreadsheet does not provide control over the warnings and messages displayed to the user. For this reason we added a MessageShowing event to the RadSpreadsheet class that allows you to suppress and customize the dialog. For example, the following snippet will disable only protection-related messages:
sender, MessageShowingEventArgs e)
content = LocalizationManager.GetString(
Please note that the MessageShowing event will be available in the LIB expected next week.
I hope you will find my answer helpful. Do not hesitate to write back if you have further questions.
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