获取数据列表中的图像索引 [英] get image index in datalist

问题描述

大家好
我正在使用数据列表在imagebutton中查看数据库中的图像，我做到了，但是没有问题，但
我想在单击图像时转到另一页并显示该图像的所有细节，但在获取图像索引时遇到问题

我在aspx中使用此代码

hi all
i am using datalist to view image from database in imagebutton i do this and no problem but
i want when clicked in image go to another page and display all ditails of this image i have a problem with getting image index

i use this code in aspx

<asp:DataList ID="DataList1" runat="server"  RepeatColumns="3"  OnItemCommand="DataList1_ItemCommand" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Both" Width="719px"  >
        <ItemTemplate>
            <asp:ImageButton ID="ImageButton2" runat="server" ImageUrl='<%#Eval("image")%>' CommandName="selectimage" CommandArgument='<%# Eval("id") %>' Width=100 Height=100 /><br />

并在cs
中

and in cs

if (e.CommandName == "selectimage")
{

   int Id = int.Parse(e.CommandArgument.ToString());

}

但将索引为空
并知道问题所在

}

but get the index empty
and do know the problem

推荐答案

将您的Id字段设置为DataKeyField，然后尝试检索其值:
在Datalist的aspx端:-DataKeyField ="id"
由于您需要CommandArgument的唯一值.

Set your Id field as DataKeyField and then try to retrieve its value :
In aspx side of Datalist :- DataKeyField="id"
As you require Unique value for CommandArgument.

设置您的DataList DataKeyField并遵循以下代码:

Set Your DataList DataKeyField and follow the bellow code:

<asp:datalist id="dlPhotos" runat="server" repeatcolumns="5" xmlns:asp="#unknown">
                    RepeatDirection="Horizontal" BorderColor="#336699" BorderStyle="Solid" 
                    BorderWidth="1px" CellPadding="3" DataKeyField="SLNO" 
                    onitemcommand="dlPhotos_ItemCommand">                  
                      <itemtemplate>
                          <asp:imagebutton id="imgView">
                              ImageUrl='<%# "Handler.ashx?ImgId=" + Eval("SLNO") %>' runat="server" 
                              Height="110px" Width="150px" CommandName="Select" />
                        <br />
                        <asp:label id="Label1" runat="server" text="<%# Eval("PHOTO_TITLE") %>" font-bold="True">
                            Font-Size="10pt" ForeColor="#336699" Width="100%" />
                        
                    </itemtemplate>
                    <itemstyle horizontalalign="Center" verticalalign="Top" />

protected void dlPhotos_ItemCommand(object source, DataListCommandEventArgs e)
    {
         if (e.CommandName == "Select")
        {
            int strId = Convert.ToInt32(dlPhotos.DataKeys[e.Item.ItemIndex].ToString());
        }

    }

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