grid表头小问题

Question

CheckBox   ckb   =   (CheckBox)gvComUnion.Items.FindControl( "ckbSelect "); 

Answer 1

protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
      {
          for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
          {
              CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
              if (CheckBox2.Checked == true)
              {
                  cbox.Checked = true;
              }
              else
              {
                  cbox.Checked = false;
              }
          }
      }