How to create a folder in SharePoint 2010 Library Programmatically


public void CreateFolder(string LibraryName, string folderName)
        {
            SPSecurity.RunWithElevatedPrivileges(delegate()
              {
                  using (SPSite osite = new SPSite(SPContext.Current.Site.Url))
                  {
                      using (SPWeb oweb = osite.OpenWeb())
                      {
                          SPDocumentLibrary MyDocLibrary = (SPDocumentLibrary)oweb.Lists[LibraryName];
                          SPFolderCollection MyFolders = oweb.Folders;
                          SPFolder folder =oweb.GetFolder(MyDocLibrary.RootFolder.ServerRelativeUrl + "/" + folderName);
                          if (folder.Exists)
                          {
                              lblError.Text = "Folder exists";                             
                          }
                          else
                          {
                              MyFolders.Add(MyDocLibrary.RootFolder.ServerRelativeUrl + "/" + folderName + "/");
                              oweb.AllowUnsafeUpdates = true;
                              MyDocLibrary.Update();
                              oweb.AllowUnsafeUpdates = false;                             
                              SPFieldUrlValue ofldval = new SPFieldUrlValue();
                              ofldval.Url = MyDocLibrary.RootFolder.ServerRelativeUrl + "/" + folderName + "/";
                              lblError.Text = "Folder created : Url is : " + ofldval.Url;
                          }
                         
                      }
                  }
              });
        }

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