Casting To SPDocumentLibrary

Posted in SharePoint 2007 Development |
Posted by Adam Buenz

A friend just asked me the way to cast a SPList To a SPDocumentLibrary so that he could access the document library specific attributes for document library objects. This is one way of doing it:

Select For Unformatted Code
C#:
  1. public static SPWeb GetWeb(string url)
  2. {
  3. using (SPSite site = new SPSite(url))
  4. {
  5. using (SPWeb web = site.OpenWeb())
  6. {
  7. return web;
  8. }
  9. }
  10. }
  11.  
  12. public static SPDocumentLibrary CastDocumentLibrary(string url, string libraryName)
  13. {
  14. return GetWeb(url).Lists[libraryName] as SPDocumentLibrary;
  15. }

Obviously, the casting can take on many forms, but the end result is still an SPDocumentLibrary object.

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3 Responses to “Casting To SPDocumentLibrary”

  1. Viktor Dolezel Says:
    November 19th, 2008 at 8:49 am

    Isn't GetWeb() returning a reference to a disposed object?

  2. Adam Buenz Says:
    November 19th, 2008 at 9:14 am

    The expression in the return statement is evaluated before the object is disposed.

  3. Keith Dahlby Says:
    January 18th, 2009 at 4:06 pm

    I believe Viktor is correct. GetWeb disassembled looks like this:

    public static SPWeb GetWeb(string url)
    {
    SPWeb temp;
    using (SPSite site = new SPSite(url))
    {
    using (SPWeb web = site.OpenWeb())
    {
    temp = web;
    }
    }
    return temp;
    }

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