Vb net datagrid cellvalidating

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If the event handler for the Cell Validating event finds that the value is an empty string, the Data Grid View prevents the user from exiting the cell until a non-empty string is entered.For a complete explanation of this code example, see Walkthrough: Validating Data in the Windows Forms Data Grid View Control. Value = 3 'This will set the defaultvalue of the datagrid cell in question to the value of "3" Exit Sub End If Next End If This solution not only checks for non-integer values it also works for every column populated with numbers for the entire datagridview. Column Index = 3) Then 'checking numeric value for column 3 only If Not Isnumeric(e. Column Index = 2 Then '' this is the col index for qty to be transfered If .

vb net datagrid cellvalidating-31

vb net datagrid cellvalidating-88

I understand that the impact in performance should be irrelevant when using simple validation and conditional highlighting rules but I would as much prefer it not to run useless code everytime the user moves to another cell if it can be avoided.

Yeah, I agree with that if it is for validation only.

However, for conditional formatting code, I don't see much other way for it to remain in Data Grid View's related-code (or in a class derived from Data Grid View to abstract it).

On form load there are 4 items loaded into the grid.

When the form is loaded the first cell that is selected passes the check with no problem. Ivan.f Private Sub Validate Cell Value(sender As Object, e As Data Grid View Cell Validating Event Args) Handles grd Result.

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