Adding new columns to a Winforms DataGridView via code

Question

I\'m trying to add N number of columns for each days of a given month:

var daysCount = DateTime.DaysInMonth(DateTime.Now.Year, month);

for (int i = 1; i <= d         


        

Answer 1

You need to specify first whether it's a textbox column or combobox column Try this it will work

var daysCount = DateTime.DaysInMonth(DateTime.Now.Year, month);

for (int i = 1; i <= daysCount; i++)
{
    dataGridView1.Columns.Add(new DataGridViewTextBoxColumn() { HeaderText = i.ToString() });
}