How can I clear rows in DataGridView with C#?

Question

Following Error in this line.

datagridview1.Rows.Clear()

but this line gives error:

Cannot clear this list.

Answer 1

You have to Clear datasource not datagridview rows.

datagridview1.DataSource = null;

Another way is

1) Dont assign direct datasource to gridview. add rows from datatable to gridview

      foreach (DataRow row in dataTable.Rows)
        {
            var dataGridRow = new DataGridViewRow();
            dataGridRow.CreateCells(datagridview1);

            for (int i = 0; i < row.ItemArray.Length; i++)
            {
                dataGridRow.Cells[i].Value = row.ItemArray[i];
            }

            datagridview1.Rows.Add(dataGridRow);
        }

then use

datagridview1.Rows.Clear()