GridView编辑时动态将值转给用户自定义控件

 在GridView中点编辑时，将当前的值转给用户控件。当然要在GridView中添加一个自定义控件，首先要将该列变成模板列。在编辑模板中添加一个自定义控件。
一个简单的自定义控件，里面只有一个控件TextBox:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WUCTest.ascx.cs" Inherits="WUCTest" %>
<asp:TextBox ID="TextBox1" runat="server" BackColor="#C0FFFF"></asp:TextBox>

控件实现代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class WUCTest : System.Web.UI.UserControl
{
    private string text;
    public string Text
    {
        get {
            GetText();
            return text;
        }
        set {
            SetText();
            text = value;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    private void GetText()
    {
        text=TextBox1.Text.Trim();
    }
    private void SetText()
    {
        TextBox1.Text = text;
    }
}

GridView控件定义：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowCommand="GridView1_RowCommand" OnRowCreated="GridView1_RowCreated" OnRowDataBound="GridView1_RowDataBound" OnRowUpdating="GridView1_RowUpdating">
            <Columns>
                <asp:BoundField DataField="OrderID" />
                <asp:BoundField DataField="CustomerID" />
                <asp:BoundField DataField="EmployeeID" />
                <asp:BoundField DataField="OrderDate" />
                <asp:TemplateField>
                    <EditItemTemplate>
                        &nbsp;<uc1:WUCTest ID="WucCtrl" runat="server" Text='<%# Bind("ShipName") %>' />
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="LblTemp" runat="server" Text='<%# Bind("ShipName") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="ShipRegion" />
                <asp:CommandField ShowEditButton="True" />
            </Columns>
        </asp:GridView>

页面代码实现：

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGvw();
        }

    }
    //定义要传的值对象
    private string Text;
    private void BindGvw()
    {
        DataTable dt=new DataTable ();
        string Connstr = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString; 
        SqlDataAdapter da=new SqlDataAdapter ("select top 10 * from Orders",Connstr);
        da.Fill (dt);
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
       
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        //保存要传递的值
        Text =((Label)GridView1.Rows[e.NewEditIndex].Cells[4].FindControl("LblTemp")).Text;
        GridView1.EditIndex = e.NewEditIndex;
        BindGvw();
    }
   
    //在RowCreated实现传值
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        string temp = e.Row.ToString();
        if ((e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit)
        {
            //重点
           ((WUCTest)e.Row.FindControl("WucCtrl")).Text =Text;
        }
    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {

    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        BindGvw();
    }