在DataGridView控件中加入ComboBox下拉列表框的实现

导读： 
　　效果如下图所示： 
　　http://www.cnblogs.com/images/cnblogs_com/snowdust/MainForm.gif 
　　 
　　完整的代码如下： 
　　usingSystem;usingSystem.Data;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;namespaceMyNameSpace
　　{ 
　　publicpartialclassMainForm : Form 
　　{ 
　　//定义下拉列表框 
　　private ComboBox cmb_Temp =new ComboBox(); 
　　publicMainForm() 
　　{ 
　　InitializeComponent(); 
　　} 
　　///

///绑定性别下拉列表框 
　　///
　　private void BindSex() 
　　{ 
　　DataTable dtSex =newDataTable(); 
　　dtSex.Columns.Add("Value"); 
　　dtSex.Columns.Add("Name"); 
　　DataRow drSex; 
　　drSex =dtSex.NewRow(); 
　　drSex[0] ="1" drSex[1] ="男" dtSex.Rows.Add(drSex); 
　　drSex =dtSex.NewRow(); 
　　drSex[0] ="0" drSex[1] ="女" dtSex.Rows.Add(drSex); 
　　cmb_Temp.ValueMember ="Value" cmb_Temp.DisplayMember ="Name" cmb_Temp.DataSource =dtSex; 
　　cmb_Temp.DropDownStyle =ComboBoxStyle.DropDownList; 
　　} 
　　//////为避免连接数据库，这里手工构造数据表，实际应用中应从数据库中获取 
　　///
　　private void BindData() 
　　{ 
　　DataTable dtData =newDataTable(); 
　　dtData.Columns.Add("ID"); 
　　dtData.Columns.Add("Name"); 
　　dtData.Columns.Add("Sex"); 
　　DataRow drData; 
　　drData =dtData.NewRow(); 
　　drData[0] =1 drData[1] ="张三" drData[2] ="1" dtData.Rows.Add(drData); 
　　drData =dtData.NewRow(); 
　　drData[0] =2 drData[1] ="李四" drData[2] ="1" dtData.Rows.Add(drData); 
　　drData =dtData.NewRow(); 
　　drData[0] =3 drData[1] ="王五" drData[2] ="1" dtData.Rows.Add(drData); 
　　drData =dtData.NewRow(); 
　　drData[0] =4 drData[1] ="小芳" drData[2] ="0" dtData.Rows.Add(drData); 
　　drData =dtData.NewRow(); 
　　drData[0] =5 drData[1] ="小娟" drData[2] ="0" dtData.Rows.Add(drData); 
　　drData =dtData.NewRow(); 
　　drData[0] =6 drData[1] ="赵六" drData[2] ="1" dtData.Rows.Add(drData); 
　　this.dgv_User.DataSource =dtData; 
　　} 
　　private void MainForm_Load(objectsender, EventArgs e) 
　　{

// 绑定性别下拉列表框
             BindSex();

            //绑定数据表
             BindData();

            // 设置下拉列表框不可见
             cmb_Temp.Visible = false;

            // 添加下拉列表框事件
             cmb_Temp.SelectedIndexChanged += new EventHandler(cmb_Temp_SelectedIndexChanged);

            // 将下拉列表框加入到DataGridView控件中
            this.dgv_User.Controls.Add(cmb_Temp);
         }

        // 当用户移动到性别这一列时单元格显示下拉列表框
        private void dgv_User_CurrentCellChanged(object sender, EventArgs e)
         {
            try
             {
                if (this.dgv_User.CurrentCell.ColumnIndex == 2)
                 {
                     Rectangle rect =dgv_User.GetCellDisplayRectangle(dgv_User.CurrentCell.ColumnIndex, dgv_User.CurrentCell.RowIndex,false);
                    string sexValue = dgv_User.CurrentCell.Value.ToString();
                    if (sexValue == "1")
                     {
                         cmb_Temp.Text = "男";
                     }
                    else
                     {
                         cmb_Temp.Text = "女";
                     }
                     cmb_Temp.Left = rect.Left;
                     cmb_Temp.Top = rect.Top;
                     cmb_Temp.Width = rect.Width;
                     cmb_Temp.Height = rect.Height;
                     cmb_Temp.Visible = true;
                 }
                else
                 {
                     cmb_Temp.Visible = false;
                 }
             }
            catch
             {
             }
         }

        // 当用户选择下拉列表框时改变DataGridView单元格的内容
        private void cmb_Temp_SelectedIndexChanged(object sender, EventArgs e)
         {
            if (((ComboBox)sender).Text == "男")
             {
                 dgv_User.CurrentCell.Value = "男";
                 dgv_User.CurrentCell.Tag = "1";
             }
            else
             {
                 dgv_User.CurrentCell.Value = "女";
                 dgv_User.CurrentCell.Tag = "0";
             }
         }

        // 滚动DataGridView时将下拉列表框设为不可见
        private void dgv_User_Scroll(object sender, ScrollEventArgs e)
         {
            this.cmb_Temp.Visible = false;
         }

        // 改变DataGridView列宽时将下拉列表框设为不可见
        private void dgv_User_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e)
         {
            this.cmb_Temp.Visible = false;
         }

        // 绑定数据表后将性别列中的每一单元格的Value和Tag属性（Tag为值文本，Value为显示文本）
        private void dgv_User_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
         {
            for (int i = 0; i < this.dgv_User.Rows.Count; i++)
             {
                if (dgv_User.Rows[i].Cells[2].Value != null &&dgv_User.Rows[i].Cells[2].ColumnIndex == 2)
                 {
                     dgv_User.Rows[i].Cells[2].Tag = dgv_User.Rows[i].Cells[2].Value.ToString();
                    if (dgv_User.Rows[i].Cells[2].Value.ToString() == "1")
                     {
                         dgv_User.Rows[i].Cells[2].Value = "男";
                     }
                    else if (dgv_User.Rows[i].Cells[2].Value.ToString() == "0")
                     {
                         dgv_User.Rows[i].Cells[2].Value = "女";
                     }
                 }
             }
         }
     }
}

本文转自 
http://hi.baidu.com/tiankong912/blog/item/c6b475f0d7d1ddaaa50f521b.html