C# DataGridView中下拉列表框的实现

效果图

在winfrom中拖入一个DataGridView控件

private void Form1_Load(object sender, EventArgs e)
        {
            DataGridViewTextBoxColumn column = new DataGridViewTextBoxColumn();
            column.Name = "ID";
            column.DataPropertyName = "id";//对应数据源的字段
            column.HeaderText = "ID";
            column.Width = 80;
            this.dataGridView1.Columns.Add(column);

            DataGridViewComboBoxColumn column1 = new DataGridViewComboBoxColumn();
            column1.Name = "Name";
            column1.DataPropertyName = "Name";//对应数据源的字段
            column1.HeaderText = "姓名";
            column1.Width = 80;
            this.dataGridView1.Columns.Add(column1);
            List<string> ListData = new List<string> { "张三", "里斯", "王六" };
            column1.DataSource = ListData; //这里需要设置一下combox的itemsource,以便combox根据数据库中对应的值自动显示信息

            //绑定数据源
            dataGridView1.DataSource = CreateTable();
        }

private DataTable CreateTable()
        {
            DataTable dt = new DataTable();                         //创建一个空表
            DataColumn column =new DataColumn();                    //创建一个空列     
            column.DataType = System.Type.GetType("System.Int32");
            column.ColumnName = "id";
            dt.Columns.Add(column);
            column = new DataColumn();
            column.DataType = Type.GetType("System.String");
            column.ColumnName = "Name";
            dt.Columns.Add(column);
            DataRow row = dt.NewRow();                              //创建行
            row["id"] = 0;
            row["Name"] = "张三";
            dt.Rows.Add(row);                                       //显示
            return dt;

        }

当想修改Combox列的数据时，或是想通过Combox的改变做文章的要用到dataGridView1_EditingControlShowing这个事件，即编辑dataGriview中的数据就会触发该事件

  private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            ComboBox combo = e.Control as ComboBox;
            if (combo != null)
            {
                combo.SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
            }

        }

   private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            ComboBox combo = sender as ComboBox;
            string selectedItem = combo.Text;//拿到选择后的值
        }

转自https://www.cnblogs.com/ZLGBloge/p/4415155.html