在DataList中单击ImageButton，显示图片详细信息

以下是HTML代码：

<%...@ Page Language="C#" MasterPageFile="~/MasterPage2.master" AutoEventWireup="true"
    CodeFile="ListPhoto.aspx.cs" Inherits="ListPhoto" Title="List Photo" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <asp:DataList ID="dlPhoto" runat="server" RepeatColumns="4" RepeatDirection="Horizontal"
        CellPadding="0" Width="790px" OnItemCommand="dlPhoto_ItemCommand">
        <ItemTemplate>
            <asp:ImageButton Width="185" ID="ibtnPhoto" ImageUrl='<%# FormatURL(DataBinder.Eval(Container,"DataItem.user_name"),DataBinder.Eval(Container, "DataItem.photo_type_id"),DataBinder.Eval(Container, "DataItem.photo_id")) %>'
                runat="server" AlternateText="click list Details information!" CommandName="Detail" OnClick="ibtnPhoto_Click" /><br />
            <asp:Label ID="lblPhotoType" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.photo_type_id")%>'
                Visible="false"></asp:Label><br />
            <asp:Label ID="lblPhotoName" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.photo_id")%>'
                Visible="false"></asp:Label>
        </ItemTemplate>
    </asp:DataList>
</asp:Content>

以下是对应的后台代码：

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 ListPhoto : System.Web.UI.Page
...{
    protected void Page_Load(object sender, EventArgs e)
    ...{
        if(!Page.IsPostBack)
        ...{
            if(!(Convert.ToBoolean(Session["isLogin"])))
            ...{
                Response.Redirect("Login.aspx");
            }
            else
            ...{
                System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DogsManagerConnectionString"].ToString());
                string code,strSQL;
                code = Request.QueryString["code"].ToString();
                if(code == "A")
                ...{
                    strSQL = string.Format("select user_name,photo_type_id,photo_id,photo from E_Photo where user_name='{0}'", Session["name"].ToString());
                }
                else
                ...{
                    strSQL = string.Format("select user_name,photo_type_id,photo_id,photo from E_Photo where user_name='{0}' AND photo_type_id={1}", Session["name"].ToString(),code);
                }
                System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(strSQL, conn);
                try
                ...{
                    conn.Open();
                    this.dlPhoto.DataSource = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                    this.dlPhoto.DataBind();
                }
                catch(System.Data.SqlClient.SqlException sql)
                ...{
                    Response.Write("wrong information:<br>" + sql.Message);
                }
                finally
                ...{
                    cmd.Dispose();
                    conn.Close();
                }
            }
        }
    }

    protected string FormatURL(object userName, object typeID, object photoID)
    ...{
        return string.Format("ReadImage.aspx?userName={0}&typeID={1}&photoID={2}",
            userName.ToString(), typeID.ToString(), photoID.ToString());
    }
    protected void dlPhoto_ItemCommand(object source, DataListCommandEventArgs e)
    ...{
        if(e.CommandName == "Detail")
        ...{
            string userName = Session["name"].ToString();
            string typeId = ((Label)e.Item.FindControl("lblPhotoType")).Text;
            string photoId = ((Label)e.Item.FindControl("lblPhotoName")).Text;
            string Format = string.Format("ListPhotoDetail.aspx?userName={0}&typeID={1}&photoID={2}",
                userName, typeId, photoId);
            //ImageButton ibtnDetail = (ImageButton)e.Item.FindControl("ibtnPhoto");
            //ImageButton ibtnDetail = (ImageButton)this.dlPhoto.Items[e.Item.ItemIndex].FindControl("ibtnPhoto");
            //添加单击事件
            //ibtnDetail.Click += new ImageClickEventHandler(ibtnDetail_Click);
            respon(Format);
        }
    }
    /**//// <summary>
    /// 在模板列中添加的单击事件
    /// </summary>    
    //void ibtnDetail_Click(object sender, ImageClickEventArgs e)
    //{
    //    Response.Redirect("http://www.baidu.com");
    //}
    void respon(string url)
    ...{
        Response.Write("<script language='javascript'>window.open('"+url+"','newWindow');</script>");
    }
    protected void ibtnPhoto_Click(object sender, ImageClickEventArgs e)
    ...{
        
    }
}

 以下是显示详细页面ListPhotoDetail.aspx对应的ＨＴＭＬ代码：

 

<%...@ Page Language="C#" AutoEventWireup="true" CodeFile="ListPhotoDetail.aspx.cs" Inherits="ListPhotoDetail1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>List Photo Detail</title>
</head>
<body>
    <form id="form1" runat="server">
    <table border="0" cellpadding="0" cellspacing="0">
        <tr>
            <td colspan="2" style="height: 53px">
                <span style="font-size: 14pt"><strong>List Details Photo</strong></span></td>
        </tr>
        <tr>
            <td colspan="2">
                <asp:Image ID="imgPhoto" runat="server" /></td>
        </tr>
        <tr>
            <td align="right" style="height: 24px">
                <asp:Label ID="lblLoadDate" runat="server" Text="UpLoad Date:"></asp:Label></td>
            <td align="left" style="height: 24px">
                <asp:TextBox ID="txtLoadDate" runat="server" Width="164px"></asp:TextBox></td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label2" runat="server" Text="Description:"></asp:Label></td>
            <td align="left">
                <asp:TextBox ID="txtDesc" runat="server" Height="248px" TextMode="MultiLine" Width="401px"></asp:TextBox></td>
        </tr>
    </table>
        <asp:Button ID="btnOK" runat="server" Text="OK" />
    </form>
</body>
</html>

以下是对应的后台代码：

 

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 ListPhotoDetail1 : System.Web.UI.Page
...{
    protected void Page_Load(object sender, EventArgs e)
    ...{
        
        if(!Page.IsPostBack)
        ...{
            string username = Request.QueryString["userName"].ToString();
            string typeid = Request.QueryString["typeID"].ToString();
            string photoid = Request.QueryString["photoID"].ToString();
            System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DogsManagerConnectionString"].ToString());
            string strSQL = string.Format("select Photo_Desc,UpLoad_Date from E_Photo where user_name='{0}' and photo_type_id=" +
                "{1} and photo_id='{2}'", username, typeid, photoid);
            System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(strSQL, conn);
            try
            ...{
                conn.Open();
                System.Data.SqlClient.SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                if(reader.Read())
                ...{
                    //设置其他项
                    this.txtDesc.Text = reader["Photo_Desc"].ToString();
                    this.txtLoadDate.Text = reader["UpLoad_Date"].ToString();
                }
            }
            catch(System.Data.SqlClient.SqlException sql)
            ...{
                throw sql;
            }
            finally
            ...{
                cmd.Dispose();
                conn.Close();
            }
            //设置图片的显示
            this.imgPhoto.ImageUrl = FormatURL(username, typeid, photoid);
        }
    }
    /**//// <summary>
    /// 获取格式化地址
    /// </summary>
    /// <param name="userName">user name</param>
    /// <param name="typeID">phto type id</param>
    /// <param name="photoID">photo number</param>
    /// <returns></returns>
    protected string FormatURL(string userName, string typeID, string photoID)
    ...{
        return string.Format("ReadImage.aspx?userName={0}&typeID={1}&photoID={2}",
            userName, typeID, photoID);
    }
}