[Solved] Open Image from ItemTemplate in aspx ?

[Madhu Palakurthi]

Hi,

I am using hyperlink inside item template  to navigate other pages that based on type.
If type is Task then I am giving navigateURL is Edittask.aspx
If type is Email then I am opening a radwindow to show email body.
Now I would like to open Attachment if type is attachment.

Note : I am taking image content direct from DB not from any path.
Table & column info here :



Generally I can use GridAttachmentColumn to open/save attachment like this..



I want the same popup that If i click on hyperlink when type is attachment

Code :

Dim subject As String = String.Empty
           Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)
           Dim link As HyperLink = DirectCast(item.FindControl("hlnkDescription"), HyperLink)
           Dim type As String = item("Type").Text
           Dim Privacy As String = item("Privacy").Text
           Dim lnkTaskNo As HyperLink = DirectCast(item.FindControl("hlnkTaskNo"), HyperLink)
           Dim taskNo As String = lnkTaskNo.Text

 If type IsNot Nothing And type <> "" Then
               Dim taskHierarchyURL As String = "~/MyTasksHierarchyMain.aspx?TaskNo=" + taskNo + "&Subject=" + subject + "&Id=" + item("Id").Text + ""
               Select Case type
                   Case "Task", "Group"  '28/03/2013  & 03/04/2013
                       If taskNo IsNot Nothing And taskNo <> "" Then
                           If Privacy = "Confidential" Then
                               link.Text = "Private & Confidential"
                               link.CssClass = "hidelink"
                               link.Enabled = False
                           Else
                               If Session("searchtype") = "All" Then
                                   link.NavigateUrl = taskHierarchyURL
                               Else
                                   link.NavigateUrl = "~/EditTask.aspx?TaskNo=" + taskNo + "&Subject=" + subject + "&Id=" + item("Id").Text + ""
                               End If
                           End If
                       End If
                   Case "Email"
                       If taskNo IsNot Nothing And taskNo <> "" And taskNo <> "0" Then
                           If Privacy = "Confidential" Then
                               link.Text = "Private & Confidential"
                               link.CssClass = "hidelink"
                               link.Enabled = False
                           Else
                               'Start : 11/04/2013
                               'link.NavigateUrl = "~/EditTask.aspx?func=email&TaskNo=" + taskNo + "&Subject=" + subject + "&Id=" + item("Id").Text + ""
                               lnkTaskNo.NavigateUrl = "~/EditTask.aspx?func=email&TaskNo=" + taskNo + "&Subject=" + subject + "&Id=" + item("Id").Text + ""
                               link.Attributes("href") = "javascript:void(0);"
                               link.Attributes("onclick") = [String].Format("return ShowEmailBodyForm('{0}','{1}');", item("Id").Text, e.Item.ItemIndex)
                               'End : 11/04/2013
                           End If
                       Else
                           link.NavigateUrl = "~/MasterScreen.aspx?page=EmailMasterLink&TaskNo=0&Mth=0&Yr=0&Subject=" + subject + "&Id=" + item("Id").Text + ""
                           If item("InitiatorName").Controls.Count > 0 Then
                               DirectCast(item("InitiatorName").Controls(0), TextBox).Visible = False
                           End If
                       End If
                       Dim message As String = HtmlRemoval.StripTagsRegex(item("Message").Text).Replace(".", "").ToString()
                       item("Message").Text = message.Substring(0, 100) + "..."
                       Session("SearchEmail") = True '03/04/2013
                   Case "Attachment"
                       If taskNo IsNot Nothing And taskNo <> "" And taskNo <> "0" Then
                           If Privacy = "Confidential" Then
                               link.Text = "Private & Confidential"
                               link.CssClass = "hidelink"
                               link.Enabled = False
                           Else
                               link.NavigateUrl = "~/EditTask.aspx?func=attachments&TaskNo=" + taskNo + "&Subject=" + subject + "&Id=" + item("Id").Text + ""
                           End If
                       Else
                           link.NavigateUrl = "~/MasterScreen.aspx?page=UncategorisedAttachments,NonTask&Subject=" + subject + "&Id=" + item("Id").Text + ""
                       End If
               End Select
           End If

Design  :

<telerik:GridTemplateColumn ShowSortIcon="true" SortExpression="Subject" FilterControlAltText="Filter Subject column"
                                       DataField="Subject" FilterControlWidth="250px" DataType="System.String" UniqueName="Subject"
                                       HeaderText="Click to view attachment / emails / tasks">
                                       <ItemTemplate>
                                           <asp:HyperLink ID="hlnkDescription" Target="_blank" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "Subject")%>'></asp:HyperLink>
                                       </ItemTemplate>
                                   </telerik:GridTemplateColumn>

Please help on this .. Thanks in advance..

[Vasil]

Hi Narsa,

You can the same approach as in this demo:
http://demos.telerik.com/aspnet-ajax/grid/examples/generalfeatures/gridattachmentcolumn/defaultcs.aspx
Examine its code, I believe it do exactly what you want.

All the best,
Vasil
the Telerik team