循环访问DataGridView行,设置外键问题

Question

foreach (DataGridViewRow row in dataGridView1.Rows)
                {
                    row.Cells[dELIVERIDDataGridViewTextBoxColumn.Index].Value = this.dELIVER_IDTextBox.Text;
                }不能设置GridView中所有行,

Answer 1

跟踪进去,发现
获取共享行的 InheritedStyle 属性是无效的操作。

Answer 2

int num= this.DataGrid1.Items.Count;
for(int i=0;i<num;i++)
{

}

Answer 3

//for (int cnt = 0; cnt < dataGridView1.Rows.Count; cnt++)
                //{
                //    dataGridView1.Rows[cnt].Cells[dELIVERIDDataGridViewTextBoxColumn.Index].Value = this.dELIVER_IDTextBox.Text; 
                //}
                //foreach (DataGridViewRow row in dataGridView1.Rows)
                //{
                //    row.Cells[dELIVERIDDataGridViewTextBoxColumn.Index].Value = this.dELIVER_IDTextBox.Text;
                //}
两种效果一样