Dynamically generate hyperlink from 2 columns in GridView

Question

I hope I can explain this clearly:

I have a GridView that only displays an ID and Name field from an EntityDataSource.

I want to add a third column that will contain a dynamically generated hyperlink corresponding to each ID.

However,the navigateurl for these hyperlinks can only be obtained by concatenating two other fields (that are not displayed) corresponding to the ID.

Suppose my DataSource had the following data:

[ID] [Name] [Path] [FileName]
 1    ABC    path1  file1
 2    XYZ    path2  file2

I want to see the following gridview, with the hyperlink constructed as:

|ID | NAME | Hyperlink      |             
----------------------------|                
 1  | ABC  | path1/file1.pdf|
 2  | XYZ  | path2/file2.pdf|

How do I do construct a hyperlink from 2 columns?

I'm doing an ASP.NET web form application, with the entity classes reverse engineered from the database. However, I added a read only property to a partial class. But I'm unable to access it. Here's what I added to my Entities class

public partial class MyEntity 
{ 
   public string FilePath 
   { 
      get { return string.Format("{0}/"{1}.pdf", this.FileName, this.FilePath); } 
   } 
}

Do I need to add any code elsewhere to access this read-only property?

Thank you for the edit. Was struggling with that. – colonel_px Oct 17 '11 at 21:51 — colonel_px, Oct 17 '11 at 21:51
Verify the 2 parts of MyEntity are in the same namespace. – H H Oct 19 '11 at 20:54 — H H, Oct 19 '11 at 20:54

score 3 · Accepted Answer · answered Oct 17 '11 at 22:07

use somethimg like this in code behind:

protected string GetLink(object oPath, object oFileName) {
    return string.Format("~/{0}/{1}.pdf", oPath.ToString(), oFileName.ToString());
}

and in your aspx page in gridview's column, use:

<asp:TemplateField><ItemTemplate>
    <asp:HyperLink ID="h1" runat="server" NavigateUrl='<% GetLink(Eval("Path"), Eval("FileName")) %>'>Download!</asp:HyperLink>
</ItemTemplate></asp:TemplateField>

Dynamically generate hyperlink from 2 columns in GridView

1 Answers1