I am studying custom document template.I have created a ListInstance of type Document Library and also created Module using Visual Studio 2010.Then I had created a Application page.In its page load i have pasted the following code

  using (SPSite site = new SPSite("http://pc81:2000/"))
            using (SPWeb web = site.OpenWeb())
                SPDocumentLibrary lib = (SPDocumentLibrary)web.Lists["YbbestCustomDocLib"];
                string urlStr = @"Lists/YbbestCustomDocLib/Forms/Sample.txt";
                lib.DocumentTemplateUrl = urlStr;


But when i load this application page, at the point of type casting SPList to SPDocumentLibrary i am getting an error "Unable to cast object of type 'Microsoft.SharePoint.SPList' to type 'Microsoft.SharePoint.SPDocumentLibrary".Please help me to resolve this


Can you try:

SPList list = web.Lists["YbbestCustomDocLib"];
SPDocumentLibrary lib = (SPDocumentLibrary) list;


SPList list = web.Lists["YbbestCustomDocLib"];
SPDocumentLibrary lib = list as SPDocumentLibrary;
  • Working fine now
    – anish
    Oct 11 '13 at 6:35

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