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When automatic sizing is disabled, you can programmatically set the exact width or height of rows, columns, or headers through the following properties: These methods will resize rows, columns, or headers once rather than configuring them for continuous resizing.
Programmatic content-based resizing affects rows, columns, and headers regardless of their visibility.
The enumerations used by sizing properties and methods have similar values for content-based sizing.
The sizing mode for a column is actually determined by its Inherited Auto Size Mode property.
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.
You can customize sizing behaviors when working with derived Data Grid View cell, row, and column types by overriding the Data Grid View Cell. The protected resizing method overloads are designed to work in pairs to achieve an ideal cell height-to-width ratio, avoiding overly wide or tall cells.
I'm trying to determine what event this is actually occurring on so I can handle it a little better. It throws an error Column "XX" does not allow nulls. There you can manually validate the contents of the row and prevent the user leaving if it fails. | MSDN Data Walkthroughs VBForums Database Development FAQ My Code Bank Submissions: VB | C# My Blog: Data Among Multiple Forms (3 parts) Beginner Tutorials: VB | C# | SQL Thanks for the quick response.
I am binding data to the grid and the combobox columns.
To avoid performance penalties, use the automatic sizing modes that calculate sizes based only on the displayed rows rather than analyzing every row in the control.