C datagridview cellvalidating
At run time, if the validation fails, the Data Grid View displays a red exclamation icon in that cell (see below).
Hovering the mouse pointer on the icon displays the Error Text that you set earlier.
Hi, I have Rad Grid View object and I want to Validate user input. when the user enters a value which is greater than 0 for column1 then if the column2 is greater than 0 an error must be occured and also this is the rule for coulmn2 (that is if coulmn2 value is greater than 0 and also column1's value is greater than 0 the error occurs.) the problem is that first of all I must check the value of a cell.
To perform any custom validation on the cell or row being edited, you can use the Cell Validating and Row Validation events, respectively.The Data Grid View control of Windows Forms is a versatile control that can help you create professional-looking data entry forms.It not only supports data binding but also provides frequently needed column types, such as combo box and button.The Kettic Data Grid View allows users of the control easily validate data grid cells when data is committed to the data source.To validate data to grid cells and rows, we need to use the Validate Cell event, which will be raised by the Kettic Data Grid View when there are any changes to the current cell or when the grid cell loses input focus like.
=null) // Runtime Error: Value is null, use new keyword! Error Text or cancel the operation, i just added them both here for clarity purposes. There is no need to validate data when there is no user input! Anyway, I get around it by using a edit flag like below.