GridView 编辑列问题~~~~~~~

在编辑项模版中放自己写的textbox控件。

界面上的编辑项模版是空的，里面的GridView列是动态生成的

以前有写过,现在重新复习下.下面代码测试通过.测试数据Create table userinfo
(
id int identity(1,1),
UserName nvarchar(20)
)insert into userinfo(username)
select '张三'
union
select '李四'
union
select '王五'
因为要动态添加的是模板列,扩展ITemplate:using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI;/// <summary>
///GridViewTextBoxTemplate 的摘要说明
/// </summary>
public class GridViewTextBoxTemplate : ITemplate
{
    private DataControlRowType templateType;
    private DataControlRowState rowState;
    protected string HeaderText;
    protected string FieldName;    public GridViewTextBoxTemplate(DataControlRowType type,DataControlRowState state, string headerText,string fieldName)
    {
        templateType = type;
        rowState = state;
        HeaderText = headerText;
        FieldName = fieldName;
    }    /// <summary>
    /// 定义子控件
    /// </summary>
    /// <param name="container"></param>
    public void InstantiateIn(System.Web.UI.Control container)
    {
        switch (templateType)
        {
            case DataControlRowType.Header:
                Literal litHead = new Literal();
                litHead.Text = HeaderText;
                container.Controls.Add(litHead);
                break;
            case DataControlRowType.DataRow:                if (rowState == DataControlRowState.Normal)
                {
                    Literal litRow = new Literal();
                    litRow.DataBinding += new EventHandler(litRow_DataBinding);
                    litRow.Text = HeaderText;
                    container.Controls.Add(litRow);
                }
                else if (rowState == DataControlRowState.Edit)
                {
                    TextBox txtBox = new TextBox();
                    txtBox.DataBinding += new EventHandler(txtBox_DataBinding);
                    container.Controls.Add(txtBox);
                }
                break;
            default:
                break;
        }
    }    /// <summary>
    /// Normal行数据绑定
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void litRow_DataBinding(object sender, EventArgs e)
    {
        Literal litRow = (Literal)sender;
        GridViewRow row = (GridViewRow)litRow.NamingContainer;
        litRow.Text = DataBinder.Eval(row.DataItem, FieldName).ToString();
    }    /// <summary>
    /// 修改行数据绑定
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void txtBox_DataBinding(object sender, EventArgs e)
    {
        TextBox txtBox = (TextBox)sender;
        GridViewRow row = (GridViewRow)txtBox.NamingContainer;
        txtBox.Text = DataBinder.Eval(row.DataItem, FieldName).ToString();
    }
}页面代码:<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false"
            onrowediting="GridView1_RowEditing">
        </asp:GridView>
    </div>
    </form>
</body>
后台代码:private const string conString = "Server=SZSOFT-SZZB\\SQLEXPRESS;database=office;uid=sa;pwd=abc_!123456;";    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GeneralColumns();
            BindData();
        }
    }
    /// <summary>
    /// 创建列
    /// </summary>
    private void GeneralColumns()
    {
        GridView1.Columns.Clear();        // 填加模板列
        TemplateField customField = new TemplateField();
        customField.HeaderTemplate = new GridViewTextBoxTemplate(DataControlRowType.Header,DataControlRowState.Normal,"名称","UserName");
        customField.ItemTemplate = new GridViewTextBoxTemplate(DataControlRowType.DataRow, DataControlRowState.Normal, "名称", "UserName");
        customField.EditItemTemplate = new GridViewTextBoxTemplate(DataControlRowType.DataRow, DataControlRowState.Edit, "名称", "UserName");
        GridView1.Columns.Insert(0, customField);        // 填加绑定列
        BoundField bField = new BoundField();
        bField.DataField = "id";
        bField.HeaderText = "ID";
        bField.ReadOnly = true;
        GridView1.Columns.Insert(0, bField);        // 填加CommandField
        CommandField cmdFile = new CommandField();
        cmdFile.ShowEditButton = true;
        GridView1.Columns.Insert(0,cmdFile);
    }    /// <summary>
    /// 绑定数据
    /// </summary>
    private void BindData()
    {
        GridView1.DataSource = GetData();
        GridView1.DataBind();
    }    /// <summary>
    /// 获取数据
    /// </summary>
    /// <returns></returns>
    private DataTable GetData()
    {
        SqlConnection con = new SqlConnection();
        con.ConnectionString = conString;
        con.Open();
        string sqlSelect = "Select id,UserName From users";
        SqlDataAdapter adapter = new SqlDataAdapter(sqlSelect, con);
        DataTable dt = new DataTable();
        adapter.Fill(dt);
        return dt;
    }    /// <summary>
    /// 修改列
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GeneralColumns();
        BindData();
    }

更正个错误,把"Select id,UserName From users"中的"users" 改成"userinfo",我数据库中有users表,没发现问题.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace WindowsApplication55
{
    public partial class Form1 : Form
    {
        DataGridView DGV = new DataGridView();
        TextBox TB = new TextBox();
        Timer T = new Timer();        public Form1()
        {
            InitializeComponent();            TB.TextChanged += new EventHandler(TB_TextChanged);            DGV.Parent = this;
            DGV.Columns.Add(new DataGridViewTextBoxColumn());
            DGV.Rows.Add(1);
            DGV.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(DGV_EditingControlShowing);
            T.Interval = 10;
            T.Tick += new EventHandler(T_Tick);
        }        void T_Tick(object sender, EventArgs e)
        {
            TB.Focus();
            T.Enabled = false;
        }        void TB_TextChanged(object sender, EventArgs e)
        {
            if (DGV.EditingControl != null)
                DGV.EditingControl.Text = TB.Text;
        }        void DGV_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            TB.Text = e.Control.Text;
            DGV.EditingPanel.Controls.Clear();
            DGV.EditingPanel.Controls.Add(TB);
            DGV.EditingPanel.Controls[0].Size = DGV.EditingPanel.Size;
            T.Enabled = true;
        }
    }
}

调试易

GridView 编辑列问题~~~~~~~

解决方案 »