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The validation events are meant to support the data validation of the user input.
Set the Error Text property on the row to an explanatory string.We use Html View Define to arrange the columns in 2-row display. You can work around it by using the View Cell Formatting event: Hello Jack, Regarding: 1.In this case, the row indicator and the columns will overlap with each other when the user scrolls the grid horizontally. I have updated your Telerik points for this bug report. Cell Validating event occurs only when a cell value is changed.The Cell Validating event occurs when a cell is about to commit new content. When user inputs an invalid value for a cell, we can use Error Text to show an error message in the Row Header Column.