【机房重构】DataGridView中添加复选框

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/guhaozhang/article/details/80872062

实现效果

DataGridView列头添加复选框

//声明静态类变量
private static DataGridViewCheckBoxColumn checkColumn = null;
private void cmbJiBie_SelectedIndexChanged(object sender, EventArgs e)
{
    //实例化checkColumn
    if (UI.管理员.frmoper.checkColumn == null)
    {
        UI.管理员.frmoper.checkColumn = new DataGridViewCheckBoxColumn();
        //插入第0列
        dataGridView1.Columns.Insert(0, checkColumn);
    }
}

删除选中列

private void btnDelete_Click(object sender, EventArgs e)
{
    DialogResult dr = MessageBox.Show("删除后不可恢复，确定要删除选中的用户吗？", "提示", MessageBoxButtons.OKCancel);
    if (dr == DialogResult.OK)
    {
        for (int i = 0; i < dataGridView1.Rows.Count; i++)
        {
            DataGridViewCheckBoxCell checkCell = (DataGridViewCheckBoxCell)dataGridView1.Rows[i].Cells[0];
    Boolean flag = Convert.ToBoolean(checkCell.Value);
            if (flag == true)
            {
                Facade.UserFacade Facade = new Facade.UserFacade();
                Entity.UserInfo UserInfo = new Entity.UserInfo();
                UserInfo.UserID = this.dataGridView1.Rows[i].Cells[1].Value.ToString();
                string a = this.dataGridView1.Rows[i].Cells[1].Value.ToString();
                bool flag1 = Facade.DeleteUser(UserInfo);
                if (flag1 != false)
                {
                    MessageBox.Show(string.Format("用户{0}删除成功！",a));
                }
                else
                {
                    MessageBox.Show("删除失败！");
                }
             }
          }
    }
}

全选and反选

private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
    for (int i = 0; i < dataGridView1.Rows.Count; i++)
    {
        //判断当前行是否被选中
        if ((bool)dataGridView1.Rows[i].Cells[0].EditedFormattedValue == true)
        //设置每一行的选择框为未选中
            dataGridView1.Rows[i].Cells[0].Value = false;
        else
            //设置每一行的选择框为选中
            dataGridView1.Rows[i].Cells[0].Value = true;
    }
}