Question

I need a way in which I can define the column type at run-time.

Here is my code:

foreach (DataGridViewColumn column in this.dataGrid.Columns)
{
???
//i.e. column.type  = checkbox
}

How can I define the column type in this foreach loop?

Answer 1

I’m not 100% certain I understand you question, but you can specify the column type when you create the column:

foreach (var definition in columnDefinitions)  // Some list of what the column types are
{
    var columnSpec = new DataColumn
        {
            DataType = definition.Type, // This is of type System.Type
            ColumnName = defintion.Name // This is of type string
        };

    this.dataGrid.Columns.Add(columnSpec);
}

If you need to change the type once it’s been created – you can’t do that. The best you can do is delete the columns and recreate them with the new types.