DataGridView 復選框 操作大全

1             DataGridViewCheckBoxColumn dtCheck = new DataGridViewCheckBoxColumn();
2             dtCheck.DataPropertyName = "check";
3             dtCheck.HeaderText = "";
4             dataGridView1.Columns.Add(dtCheck);
5             dataGridView1.DataSource = DataTable;
6            

以上代碼 是在DataGridView中添加復選框

 1  private void chkBox_CheckedChanged(object sender, EventArgs e)
 2         {
 3             if (this.chkBox.Checked == true)
 4             {
 5                 for (int i = 0; i < dataGridView1.Rows.Count; i++)
 6                 {
 7                     this.dataGridView1.Rows[i].Cells[0].Value = true;
 8                 }
 9             }
10             else
11             {
12                 for (int i = 0; i < dataGridView1.Rows.Count; i++)
13                 {
14                     this.dataGridView1.Rows[i].Cells[0].Value = false;
15                 }
16             } //       this.dataGridView1.Rows[i].Cells[0].Value =false;  
17 
18         }

以上是一個CheckBox 單擊事件 用作於 全選/反選

1 DataTable dt = (DataTable)dataGridView1.DataSource;
2 //使用方法
3 foreach(DataRow row in dt.Rows)
4 {
5       if (row["check"].ToString() == "True")
6       {
7           //處理方式
8       }
9 }

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

 

 1 private void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
 2         {
 3             DataGridView dgv = (DataGridView)sender;
 4             if (dgv.IsCurrentCellDirty)
 5             {
 6                 dgv.CommitEdit(DataGridViewDataErrorContexts.Commit);
 7             }
 8         }
 9 private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
10         {
11             if (e.ColumnIndex == 0)
12             {
13                 DataGridView dgv = (DataGridView)sender;
14                 DataTable dt = (DataTable)dgv.DataSource;
15                 DataGridViewCheckBoxCell checkCell = (DataGridViewCheckBoxCell)dgv.Rows[e.RowIndex].Cells[0];
16                 bool value = (Boolean)checkCell.Value;
17                 for (int i = 0; i < dt.Rows.Count; i++)
18                 {
19                     DataRow row = dt.Rows[i];
20                     if (i != e.RowIndex && value)
21                     {
22                         row["check"] = false;
23                     }
24                 }
25                 dgv.Invalidate();
26             }
27         }

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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

 1   private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
 2         {
 3             if (e.Button == MouseButtons.Right)
 4             {
 5                 if (e.RowIndex >= 0)
 6                 {
 7                     //若行已是選中狀態就不再進行設置
 8                     if (dataGridView1.Rows[e.RowIndex].Selected == false)
 9                     {
10                         dataGridView1.ClearSelection();
11                         dataGridView1.Rows[e.RowIndex].Selected = true;
12                     }
13                     //只選中一行時設置活動單元格
14                     if (dataGridView1.SelectedRows.Count == 1)
15                     {
16                         dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
17                     }
18                     //彈出操作菜單
19                     contextMenuStrip1.Show(MousePosition.X, MousePosition.Y);
20                 }
21             }
22         }

4、添加SelectToolStripMenuItem的Click 事件 代碼如下

 1  private void SelectToolStripMenuItem_Click(object sender, EventArgs e)
 2         {
 3            foreach (var item in this.dataGridView1.SelectedRows)
 4            {
 5                int i = ((System.Windows.Forms.DataGridViewBand)((DataGridViewRow)item)).Index;
 6            
 7                this.dataGridView1.Rows[i].Cells[0].Value = true;
 8 
 9            }
10         }

這樣 我們就完成批量選中復選框的功能了