Quick tip with DDS and Linq

I have had trouble with a simple Linq statement.

Code Snippet
 public static T GetMyRow(PageReference pageRef)
{
    var query = from item in Items where 
    item.PageReferenceString == pageRef.CreateReferenceToPublishedPage().ToString() 
    select item;
 

It kept throwing errors like

Methods not supported for type System.Object

Even when I rewrote it to

Code Snippet
 public static T GetMyRow(PageReference pageRef)
{
    var query = from item in Items where 
    item.PageReferenceString == (pageRef.CreateReferenceToPublishedPage().ToString()) 
    select item;
 

I got the same error,

But if I make a function that returned a string like this:

Code Snippet
 public static string PageRefAsString(PageReference pageRef)
{
    return pageRef.CreateReferenceToPublishedPage().ToString();
}
public static T GetMyRow(PageReference pageRef)
{
    var query = from item in Items 
    where item.PageReferenceString == PageRefAsString(pageRef) 
    select item;
 

I didn’t get the error. I guess there are something with what get executed or evaluated first, or something. But if you get this error message: Methods not supported for type System.Object. Maybe this is your problem, and you can save your self some time debugging it Smile . Cause I used some time before I finally got it to work.

May 16, 2011

Comments

smithsson68@gmail.com May 16, 2011 02:32 PM

Hi,

I'll report this as a bug.

Thanks for sharing.

/Paul.

May 27, 2011 01:11 PM

Currently we're not supporting .ToString() in a LINQ query. It doesn't matter if it's a method or a property. I hope we will support this soon.

/ Jonas

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