C datagridview cellvalidating event

If you could paste the code that you use, it might help to debug. I just need to show a Data Grid View full of empty cells instead of a blank canvas for data to be displayed in. Show("Action cannot not be blank, empty, or a zero-length string (ZLS)." & vb Cr Lf & vb Cr Lf & _ "Cancel edits or retry editing?

For example, you might programmatically resize all columns immediately after loading data, or you might programmatically resize a specific row after a particular cell value has been modified. Get Preferred Width() methods or by calling protected resizing method overloads in a derived Data Grid View control.

You will typically call the programmatic resizing methods at specific times.

It is also useful to provide initial sizes for user-resizable rows, columns, and headers, and for column fill mode.

Programmatic resizing is useful to avoid performance penalties with continuous resizing.

For all sizing enumerations, values with names that refer to displayed cells limit their calculations to cells in displayed rows.

With these values, you can limit which cells are used to calculate the preferred sizes.I have been struggling with two Data Grid View issues. My Data Grid View is bound to a Data Table via a Binding Source. In order to achieve this, you need to perform two things: - the Drop Down Stype property of the Combo Box editing control needs to be set to Drop Down. - ensure that the value that the user typed into the cell is added to the combo box items collection.A combo box cells value has to be in the items collection, otherwise a Data Error event will be fired, so that's the reason why you need to perform this step.End Edit() '..MSDN documentation is incorrect and the public overload of Cancel Edit does not exit edit mode and to do so we need to follow it with End Edit 'https://microsoft.com/Forums/en-US/84c06fbe-5c55-42b0-bc2d-6096c2720b4d/datagridviewcanceledit-doesnt?