Note that only the Cell Validating event can keep the editor active,when the validation fails and it does not allow the user to exit the cell until a valid value is filled.However, pressing the Esc key in this situation will revert the initial value of the cell and it will close the editor. The Row Validating event has a slightly different behavior.

validating datagrid values-30

But when I used for e.columnindex = 4 for my column 4 (Contact Number where I need it) it posted errors, there some exception reports. Like in here: Dim value As String = Data Grid View1.

Empty Exit Sub End If End If End Sub Actually, I hid the index 0 of my datagrid to prevent users from editing them. when I changed e.columnindex = 3 it worked for my column 3(Middle Name) . There is no error regarding about the program, I guess. Format Exception: Input string was not in correct format. What I am thinking now is that column 4 (Contact Number is declared as integer in mysql and the rest are varchar and it works on other columns except contact number). Is it possible if the input is like Dim value as integer?

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.

The library provides a special extension to validate data in dhtmlx Grid on the client side (for server-side validation use the dhtmlx Connector library).

Validation can be enabled for a whole column or for a specific cell.

The native dhtmlx Grid validation described above doesn't affect Data Processor behaviour. All changes made in the grid are sent to the server, no matter if they're correct or not.

Cells that fail validation are marked with a special style but their values are saved on the server.

I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox.

: D Private Sub Data Grid View1_Cell End Edit(By Val sender As System.

But when I go to the next row and I want to add another value in the reference cell and then it will fill the other like the first one, it didn't do it... My app is a sort of cash register for a shop so in the datagrid there is Reference ,it is the reference of the product.