Error when adding custom web part to a page

Question

I have a web part I have developed in Visual Studio. It just goes out to a document library and gets all the items:

SPListItemCollection collListItems = oDocumentLibrary.GetItems();

This works fine. But whenever I try to include a query:

SPQuery qry = new SPQuery();
qry.ViewFields = "<FieldRef Name=\"Name\"/><FieldRef Name=\"Modified\"/><FieldRef Name=\"Url\"/>";
qry.ViewFieldsOnly = true; // Fetch only the data that we need.
qry.ViewAttributes = "Scope=\"Recursive\"";

SPListItemCollection collListItems = oDocumentLibrary.GetItems(qry);

and try to add the web part to a page I get the following error on the page:

Failed to render "Wiki Content" column because of an error in the "multiple lines of text" field type control. Value does not fall within the expected range

Answer 1

The error was due to my ViewFields SPQuery property settings. I must have been using the wrong field names. "Name" is supposed to be "LinkFilename" and "Url" is supposed to be "ServerUrl". I was basing the field names off the SPListItem object model names which are "Name" and "Url". Thanks to Atish for making me check my query results.