C datagridview cellvalidating cancel
You must then call the Auto Resize Columns method to adjust the column widths to the calculated ideal. For example, if you call the Auto Resize Rows(Data Grid View Auto Size Rows Mode, Boolean) overload of the Auto Resize Rows method and pass in a value of false for the Boolean parameter, the overload will calculate the ideal heights and widths for cells in the row, but it will adjust the row heights only. With these values, you can limit which cells are used to calculate the preferred sizes. The enumerations used by sizing properties and methods have similar values for content-based sizing.Most sections contain a Q & A section that answers common questions regarding the specific feature or area covered by the section.Note that some questions are duplicated in multiple sections based upon the section relevancy. When you programmatically resize columns that have Inherited Auto Size Mode property values of Fill, however, the calculated content-based widths are used to proportionally adjust the column Fill Weight property values, and the actually column widths are then calculated according to these new proportions so that all columns fill the available display area of the control.
The Data Bound Item will be updated only if the cell is validated.
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provides a convenient way to realize data validation before it is committed to the underlying data source.
SOLUTION To achieve data validation prior the row is committed, you can handle the Cell Validating event, which is raised by the control when the current cell changes or when it goes out of edit mode.