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Syncfusion Feedback
Platform : ASP.NET
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Category : Basic

Why do I get the error message "System.InvalidOperationException: It is invalid to show a modal dialog or form when the application is not running in UserInteractive mode. Specify the ServiceNotification or DefaultDesktopOnly style to display a ...."

You can’t use MsgBox or MessageBox.Show in ASP.NET WebForm. You may use:

VB.NET C#

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