get image index in datalist

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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

XML

<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 />

and in cs

MIDL

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

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

}

but get the index empty
and do know the problem

Posted 4-Jul-11 5:32am

shimaa010

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Dev S · Answer 1 · 2011-07-04T06:48:00

Solution 1

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.

Posted 4-Jul-11 6:48am

Dev S

Updated 4-Jul-11 6:52am

v2

Comments

shimaa010 4-Jul-11 13:04pm

thanks for reply
but i do not understand you can explain it clearly

[no name] 5-Jul-11 6:42am

just specify 'Id' in the DataKeyField for your Datalist and then check.

Jitendra Parida - Jeetu · Answer 2 · 2011-11-18T01:36:00

Set Your DataList DataKeyField and follow the bellow code:

ASP.NET

<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" />

C#

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

    }