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ASP.NET Core Grid Remote Validation
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The ASP.NET Core DataGrid supports remote validation. The remote validation is a custom validation during which the Data Grid posts the values to the server through an AJAX request, and depending on the server response, the component displays a valid or invalid state.
The validation itself is performed on the server-side. When the Grid sends a request for editing or creating a record, a method declared in the [Remote] attribute of the respective field executes and returns information on whether the new data is valid or not.
This demo shows how to create a custom validation rule that handles the built-in Remote attributes in your model.
For more information about the editing capabilities, refer to the official Telerik UI for ASP.NET Core Data Grid product documentation on the available data-editing approaches.