Use modalpopupextender in datalist inside repeater C#

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i have one main repeater and inside that i have one datalist which contains ImageButton ,on clicking on that button that image should get open in modelpopup with respective id.

What I have tried:

---aspx----

<asp:DataList ID="dlimgrep" Visible="false" runat="server" OnItemCommand="dlimgrep_ItemCommand" OnSelectedIndexChanged="dlimgrep_SelectedIndexChanged"  RepeatDirection="Horizontal" RepeatColumns="2" RepeatLayout="Table">
                                                      <ItemTemplate>
                                                          <asp:Label ID="lbltlphotoid" runat="server" Visible="false" Text='<%#Eval("timelinephoto_id") %>'></asp:Label>
                                                          <asp:ImageButton runat="server"   Style="margin: 0px 5px 5px 0px;" Width="150px" Height="150px" CommandName="imgshowfull" class="img-responsive" ID="imgbtn" alt="user" CommandArgument='<%#Eval("timelinephoto_id") %>' ImageUrl='<%# "~/ImagePage.aspx?tlpostphtoid=" + System.Convert.ToString(Eval("timelinephoto_id")) %>' />

                                                      </ItemTemplate>
                                                  </asp:DataList>
                                                    <cc1:ModalPopupExtender ID="ModalPopupExtender3" runat="server"  TargetControlID="dlimgrep" PopupControlID="Panelshow"
                                                                  BackgroundCssClass="modalBackground" DropShadow="true">
                                                              </cc1:ModalPopupExtender>

                                                              <asp:Panel ID="Panelshow" class="post-container" runat="server" CssClass="modalPopup" align="center" Style="display: none">
                                                                   <asp:Image runat="server" Style="margin: 0px 5px 5px 0px;" Width="450px" Height="500px" ImageAlign="Left" ID="imgfull" />
                                                                  <asp:Label ID="Label1" Text="Help Us Understand What's Happening" runat="server"></asp:Label><br>
                                                                  
                                                                      <asp:Label ID="Label5" Text="What's going on?" runat="server"></asp:Label>
                                                                  <br />

                                                                  <asp:TextBox ID="TextBox2" Visible="false" runat="server" TextMode="MultiLine"></asp:TextBox>

                                                                  <br />
                                                                  <div class="fileupload fileupload-new" data-provides="fileupload" style="margin-bottom: 10px;">

                                                                      <asp:RadioButtonList ID="RadioButtonList1" runat="server" RepeatLayout="Table" CssClass="radio_gender" RepeatDirection="Vertical">
                                                                          <asp:ListItem Selected="True" Text="It's annoying or not interesting"  Value="0"></asp:ListItem>
                                                                          <asp:ListItem Text="I think it shouldn't be on BanjaraSocial" Value="1"></asp:ListItem>
                                                                          <asp:ListItem Text="It's spam" Value="2"></asp:ListItem>
                                                                      </asp:RadioButtonList>

                                                                  </div>
                                                                  <asp:Button ID="Button1" OnClick="btnContinue_Click" runat="server" Text="Continue" /> 
                                                                  <asp:Button ID="Button3" runat="server" Text="Close" />
                                                              </asp:Panel>

and
---cs---

protected void dlimgrep_ItemCommand(object source, DataListCommandEventArgs e)
 {
     SqlConnection conn = new SqlConnection(c.connStr);
     conn.Open();
     if (e.CommandName == "imgshowfull")
     {
         //Panel pan = e.Item.FindControl("Panelfull") as Panel;
         //pan.Visible = true;
         Image img = e.Item.FindControl("imgfull") as Image;

         int tlid = Convert.ToInt32(e.CommandArgument);
         SqlCommand cmdimgfull = new SqlCommand("select timeline_photos from  tbl_timelinephotos where timelinephoto_id = '" + tlid + "'", conn);
         SqlDataReader DRimg = cmdimgfull.ExecuteReader();
         if (DRimg.Read())
         {
             byte[] bytes = (byte[])(DRimg["timeline_photos"]);
             base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
             img.ImageUrl = "data:image/png;base64," + base64String;
         }
         DRimg.Close();
     }
 }

Posted 20-Mar-17 23:02pm

Member 11936990

Updated 21-Mar-17 2:31am

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kp564 · Accepted Answer · 2017-03-21T02:31:00

protected void dlimgrep_ItemCommand(object source, DataListCommandEventArgs e)
    {
        SqlConnection conn = new SqlConnection(c.connStr);
        conn.Open();
        if (e.CommandName == "imgshowfull")
        {
            ModalPopupExtender3.show()
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            //Panel pan = e.Item.FindControl("Panelfull") as Panel;
            //pan.Visible = true;
            Image img = e.Item.FindControl("imgfull") as Image;

            int tlid = Convert.ToInt32(e.CommandArgument);
            SqlCommand cmdimgfull = new SqlCommand(                                                  tbl_timelinephotos where timelinephoto_id = '" + tlid + "'", conn);
            SqlDataReader DRimg = cmdimgfull.ExecuteReader();
            if (DRimg.Read())
            {
                byte[] bytes = (byte[])(DRimg["timeline_photos"]);
                base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
                img.ImageUrl = "data:image/png;base64," + base64String;
            }
            DRimg.Close();
        }
    }