Hyperlink Control: Index was outside the bounds of the array - vb.net

Question

I have a SQL column with the name of "documents" that hold all the uploaded documents name like this: test1.doc;test2.pdf;test3.pdf. Some records for this column has no data or only has one or two documents. In my FormView I have 3 hyperlinks like this:
**//Hyperlink # 1**
<asp:HyperLink ID="HyperLink1" runat="server" Text='<%# If(Eval("documents") Is DBNull.Value, "No
document available", Eval("documents").ToString().Split(";")(0)) %>' NavigateUrl='<%#
String.Format("~/documents/uploads/{0}", Eval("documents").ToString().Split(";")(0)) %>' >
</asp:HyperLink><br />
**//Hyperlink # 2**
<asp:HyperLink ID="HyperLink2" runat="server" Text='<%# If(Eval("documents") Is DBNull.Value, "No
document available", Eval("documents").ToString().Split(";")(1)) %>' NavigateUrl='<%#
String.Format("~/documents/uploads/{0}", Eval("documents").ToString().Split(";")(1)) %>' >
</asp:HyperLink><br />
**//Hyperlink # 3**
<asp:HyperLink ID="HyperLink3" runat="server" Text='<%# If(Eval("documents") Is DBNull.Value, "No
document available", Eval("adocuments").ToString().Split(";")(2)) %>' NavigateUrl='<%#
String.Format("~/documents/uploads/{0}", Eval("documents").ToString().Split(";")(2)) %>'>
</asp:HyperLink>
When the document column has only 1 document, I'm getting the error message: Index was outside the bounds of the array and it points to Hyperlink # 2. But if a record has 3 documents name, it shows all 3 records as expected. I really appreciate any help or guide me to the right direction.

Answer 1

That is clear because creating an array with .Split you aren’t sure about array length.
So passing a parameter to get an element by this array you have to be sure that array contains the element which means you need to be sure the array length is > to index you want to get.
In this case just add a test for that as the code below shows (index is the parameter 0, 1, 2 etc….)
<%# If(Eval("documents") Is DBNull.Value OrElse Eval("documents").ToString().Split(";").Length < index, "No document available", Eval("documents").ToString().Split(";")(index)) %>