DataGridView 復選框 操作大全

            DataGridViewCheckBoxColumn dtCheck = new DataGridViewCheckBoxColumn();

            dtCheck.DataPropertyName = "check";

            dtCheck.HeaderText = "";

            dataGridView1.Columns.Add(dtCheck);

            dataGridView1.DataSource = DataTable;
           

以上代碼 是在DataGridView中添加復選框

 private void chkBox_CheckedChanged(object sender, EventArgs e)
        {
            if (this.chkBox.Checked == true)
            {
                for (int i = 0; i < dataGridView1.Rows.Count; i++)
                {
                    this.dataGridView1.Rows[i].Cells[0].Value = true;
                }
            }
            else
            {
                for (int i = 0; i < dataGridView1.Rows.Count; i++)
                {
                    this.dataGridView1.Rows[i].Cells[0].Value = false;
                }
            } //       this.dataGridView1.Rows[i].Cells[0].Value =false;  

        }

以上是一個CheckBox 單擊事件 用作於 全選/反選

DataTable dt = (DataTable)dataGridView1.DataSource;
//使用方法
foreach(DataRow row in dt.Rows)
{
      if (row["check"].ToString() == "True")
      {
          //處理方式
      }
}

以上是后台代碼操作過程 被選中的CheckBox 自己想怎么處理就怎么寫

注：如果需要使復選框不能多選時，將DataGridView 的CellValueChanged事件和CurrentCellDirtyStateChanged事件

private void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
        {
            DataGridView dgv = (DataGridView)sender;
            if (dgv.IsCurrentCellDirty)
            {
                dgv.CommitEdit(DataGridViewDataErrorContexts.Commit);
            }
        }
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == 0)
            {
                DataGridView dgv = (DataGridView)sender;
                DataTable dt = (DataTable)dgv.DataSource;
                DataGridViewCheckBoxCell checkCell = (DataGridViewCheckBoxCell)dgv.Rows[e.RowIndex].Cells[0];
                bool value = (Boolean)checkCell.Value;
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    DataRow row = dt.Rows[i];
                    if (i != e.RowIndex && value)
                    {
                        row["check"] = false;
                    }
                }
                dgv.Invalidate();
            }
        }

========================================================================================================

dataGridView1中復選框批量選中 

1、dataGridView1.SelectionMode = 'FullRowSelect ' // dataGridView1 可以選中整行

2、添加一個contextMenuStrip1 控件    //右鍵菜單

 選擇 的name = 'SelectToolStripMenuItem'

3、dataGridView1添加CellMouseDown事件 代碼如下

  private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                if (e.RowIndex >= 0)
                {
                    //若行已是選中狀態就不再進行設置
                    if (dataGridView1.Rows[e.RowIndex].Selected == false)
                    {
                        dataGridView1.ClearSelection();
                        dataGridView1.Rows[e.RowIndex].Selected = true;
                    }
                    //只選中一行時設置活動單元格
                    if (dataGridView1.SelectedRows.Count == 1)
                    {
                        dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
                    }
                    //彈出操作菜單
                    contextMenuStrip1.Show(MousePosition.X, MousePosition.Y);
                }
            }
        }

4、添加SelectToolStripMenuItem的Click 事件 代碼如下

 private void SelectToolStripMenuItem_Click(object sender, EventArgs e)
        {
           foreach (var item in this.dataGridView1.SelectedRows)
           {
               int i = ((System.Windows.Forms.DataGridViewBand)((DataGridViewRow)item)).Index;
           
               this.dataGridView1.Rows[i].Cells[0].Value = true;

           }
        }

這樣 我們就完成批量選中復選框的功能了