Editing a numeric value in an unbound DataGridView changes the value type for the cell

There is a difference between DataGridViewNumericUpDownColumn and DataGridViewNumericUpDownCell. The column type allows you to change the value type, while the NumericUpDown cell is set to decimal since the NumericUpDown control’s value property is also decimal. Will log the bug.

Also Wisej allows cells of different types to be mixed in the same column. i.e. a column could contain a datetime cell and a combobox cell, etc.

It’s easy to set up a column/cell with the Int32 value type like this:

class DataGridViewInt32Column : DataGridViewNumericUpDownColumn
{
public DataGridViewInt32Column() { this.CellTemplate = new DataGridViewInt32Cell(); }
}

class DataGridViewInt32Cell : DataGridViewNumericUpDownCell
{
public override Type ValueType { get { return typeof(int); } }
}