清空datagridview中的数据

1.

datagridview.Rows.Clear();

2.

for(int i=0;i<datagridview.rows.count;i++)
{
datagridview.Rows[i].Clear()

}

3.

datagridview.DataSource = null;
4.

while(this.DataGridView.Rows.Count!=0)
{
this.DataGridView.Rows.RemoveAt(0);
}