DataGridView 复选框 操作大全

             DataGridViewCheckBoxColumn dtCheck = new DataGridViewCheckBoxColumn();
             dtCheck.DataPropertyName = "check";
             dtCheck.HeaderText = "";
             dataGridView1.Columns.Add(dtCheck);
             dataGridView1.DataSource = DataTable;
            

以上代码 是在DataGridView中添加复选框

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

         }

以上是一个CheckBox 单击事件 用作于 全选/反选

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

以上是后台代码操作过程 被选中的CheckBox 自己想怎么处理就怎么写

注：如果需要使复选框不能多选时，将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 == )
             {
                 DataGridView dgv = (DataGridView)sender;
                 DataTable dt = (DataTable)dgv.DataSource;
                 DataGridViewCheckBoxCell checkCell = (DataGridViewCheckBoxCell)dgv.Rows[e.RowIndex].Cells[];
                 bool value = (Boolean)checkCell.Value;
                 for (int i = ; i < dt.Rows.Count; i++)
                 {
                     DataRow row = dt.Rows[i];
                     if (i != e.RowIndex && value)
                     {
                         row["check"] = false;
                     }
                 }
                 dgv.Invalidate();
             }
         }

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dataGridView1中复选框批量选中

1、dataGridView1.SelectionMode = 'FullRowSelect ' // dataGridView1 可以选中整行

2、添加一个contextMenuStrip1 控件    //右键菜单

 选择 的name = 'SelectToolStripMenuItem'

3、dataGridView1添加CellMouseDown事件 代码如下

   private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
         {
             if (e.Button == MouseButtons.Right)
             {
                 if (e.RowIndex >= )
                 {
                     //若行已是选中状态就不再进行设置
                     if (dataGridView1.Rows[e.RowIndex].Selected == false)
                     {
                         dataGridView1.ClearSelection();
                         dataGridView1.Rows[e.RowIndex].Selected = true;
                     }
                     //只选中一行时设置活动单元格
                     if (dataGridView1.SelectedRows.Count == )
                     {
                         dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
                     }
                     //弹出操作菜单
                     contextMenuStrip1.Show(MousePosition.X, MousePosition.Y);
                 }
             }
         }

4、添加SelectToolStripMenuItem的Click 事件 代码如下

  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[].Value = true;

            }
         }

这样 我们就完成批量选中复选框的功能了