Datagridview cellvalidating date

08-May-2015 09:31 by 5 Comments

Datagridview cellvalidating date - Women over 50 cams

What's the best place to implement validation logic code and conditional formatting code for a Data Grid View?

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On the other hand, the Cell Value Changed event seems to trigger only when the value of the cell changes, which means the validation code runs only when the value changes and not everytime a user changes cells.

Now, since so many books use the Cell Validating event, I wonder if there is not any gotcha (in display for example) with using the Cell Value Changed?

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.

Thanks, Depends on what design pattern (if any) you are following.

I have a Data Grid View bound to a Data Set on my form. On click of Cancel, I would set it to True and then any routines that gave problems, I would have them watch the Is Resetting and if True, don't process the routine.

When the user clicks on the Cancel button, I call Data Set. I would rather not go the route of the Is Resetting boolean.

Clear and reset the various parts of the form to get it ready for new data input. I am hoping that there is some way of looking at the control or the Data Set and knowing what state everything is in.The problem is that if the user is in the DGV when Cancel is clicked and Data Set. EDIT: I have determined that I can access the data in the cells of the DGV.Clear is called, then the Cell Validated event fires and gives an Index Out Of Range Exception. The error happens when I look at the Error Text property for the DGV Row object.The following exception occurred in the Data Grid View: System. Index Out Of Range Exception: Index 0 does not have a value. Get Error(Int32 rowindex)I had this same thing happen in a previous app and I just created an Is Resetting form-level boolean.

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