Importing and exporting webparts in SharePoint 2007 using the object model

I have been working on a little utility to move webparts from one site to another using the ImportWebPart and ExportWebPart methods of the SPLimitedWebManager class. Here are already some code snippets which give you an idea what I'm doing.... I'm also going to incorporate some ideas which I found in this blog posting - Customizing MOSS 2007 My Sites within the Enterprise.

SPSite sitecollection = new SPSite(ConfigurationManager.AppSettings["ServerUrl"]);
SPWeb site = sitecollection.OpenWeb("/");

SPLimitedWebPartManager mgr = GetWebPartManager(args[5].ToString(),site);
sTargetDir = args[3].ToString();

switch (args[1].ToString())
{
  case "import":
    Console.WriteLine("Import operation started ....");
    ImportAllWebParts(sTargetDir,mgr);
    break;
  case "export":
    Console.WriteLine("Export operation started ....");
    ExportAllWebParts(mgr,sTargetDir,ds);
    break;
  default:
   break;

}
site.Close();
sitecollection.Close();

SPLimitedWebPartManager is one of the key classes to use if you want to manipulate webparts in SharePoint Server 2007 or WSS 3.0. (Remember that you should probably add in some error trapping...)

static SPLimitedWebPartManager GetWebPartManager(string sUrl,SPWeb site)
{
     SPLimitedWebPartManager mgr = null;
     SPFile file = site.GetFile(sUrl);
     mgr = file.GetLimitedWebPartManager(System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);
       
      return mgr;
}

static void ExportAllWebParts(SPLimitedWebPartManager mgr,string targetdir,WPEDataset ds)
{
    XmlWriter writer = null; 
            

    foreach (WebPart wp in mgr.WebParts)
    {
       //Always do a flush and close of the xmltextwriter
       writer = new XmlTextWriter(Path.Combine(targetdir,wp.Title)+ ".xml", Encoding.UTF8);
       Console.WriteLine("Export" + wp.Title + " in zone " + wp.ZoneID);
       mgr.ExportWebPart(wp, writer);
       writer.Flush();
       writer.Close();

     }
}

static void ImportAllWebParts(string sDirectory, SPLimitedWebPartManager mgr, string sWPZone)
{
 	string[] filenames;
      string sfilename = "";
      string sWPTitle = "";
      filenames = Directory.GetFiles(sDirectory);
      string sError = "";
      System.Web.UI.WebControls.WebParts.WebPart wp = null;
      XmlReader reader = null;
	int i=0;

      IEnumerator en = filenames.GetEnumerator();
      while (en.MoveNext())
      {
	    sfilename = en.Current.ToString();
          sWPTitle = sfilename.Replace(".xml", "");
          sWPTitle = sWPTitle.Replace(sDirectory + @"\","");
          reader = new XmlTextReader(sfilename);
          wp = mgr.ImportWebPart(reader, out sError);
	    mgr.AddWebPart(wp, sWPZone,i);
	    i++;     
	}                
}

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