Vb net datagrid row validating

Custom validation can be provided at either the row or the cell level depending on the kind of validation you want to provide.

For example, for values entered into an Insertion Row, custom validation would be provided at the row level since "normally", the user would be allowed to enter all the values in a row before they are validated.

Then the Auto Size Columns Mode is set to the ‘Data Grid View Auto Size Columns Mode.

All Cells’ enumeration value which automatically adjust the widths of the columns when the data changes.

This allows the end user to change the values of any cell in the row before they are validated and is most commonly used with the Insertion Row.

Custom cell validation is done using the Leaving Edit and Validation Error events.

Abstract: Data Grid View control is a Windows Forms control that gives you the ability to customize and edit tabular data.

It gives you number of properties, methods and events to customize its appearance and behavior.

The snippet shown below, first auto-resizes the columns to fit its content.

Cancel is set to true in the Ending Edit event and/or if an exception is thrown in the Ending Edit event.

If validation is used at the row level, the values of each cell in the row will only be validated once the current row changes.

In this article, we will discuss some frequently asked questions and their solutions.

These questions have been collected from a variety of sources including some newsgroups, MSDN site and a few, answered by me at the MSDN forums.

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NET 2002/2003 Basics section of the Wrox Programmer to Programmer discussions.

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