Validation expressions can be set up for Grid for WinForms cells by using the "Validation Configuration" dialog, in the same way as for standard TextBox and ComboBox controls. These expressions can also be set up through a cell's ValidationExpression property in the Properties window. For details, see the Other Cell Value topic.
Error behaviors for grid cells can be customized by modifying the appropriate properties in the Properties window. For example, the color that flashes in a cell containing an invalid value (the ErrorBackColor property) can be specified. For details, see the documentation for Xceed Grid for WinForms.
In order to set up validation expressions for an entire column, you must set the validation expression both on the insertion row and on the data row.