Upload image to Picture Library using SharePoint 2010 Web Services

We can use http:///_vti_bin/Copy.asmx Web service to upload files to a SharePoint document library or a picture library from another list. Here we use "GetItem" method to download files from the source list and "CopyIntoItems" method to upload files to the destination list. But there is a limitation that you can't copy between locations that are not on the same Web Application directly.

Following is a workaround for that limitation using two references to the source and destination sites. In this way it is possible to post an image from a SharePoint server located in one domain to another SharePoint server located in a separate domain.

In here “IntranetBlogCopyService” is a Web Reference to the http://moss2010/sites/IntranetBlog/_vti_bin/Copy.asmx service and “InternetBlogCopyService” is a a Web Reference to the ‘http://prasadmoss.domainx.local/sites/InternetBlog/_vti_bin/Copy.asmx” service.

/// 

/// Initialize Intranet Blog Copy Service.
/// 
private IntranetBlogCopyService.Copy InitializeIntranetBlogCopyService()
{
   IntranetBlogCopyService.Copy intranetBlogCopyService = new IntranetBlogCopyService.Copy();
   intranetBlogCopyService.Credentials = CredentialCache.DefaultCredentials;
   intranetBlogCopyService.Url = "http://moss2010/sites/IntranetBlog/_vti_bin/Copy.asmx";
   return intranetBlogCopyService;
}

/// 

/// Initialize Internet Blog Copy Service.
/// 
private InternetBlogCopyService.Copy InitializeInternetBlogCopyService()
{
   InternetBlogCopyService.Copy internetBlogCopyService = new InternetBlogCopyService.Copy();
   internetBlogCopyService.Credentials = CredentialCache.DefaultCredentials;
   internetBlogCopyService.Url = "http://prasadmoss.domainx.local/sites/InternetBlog/_vti_bin/Copy.asmx";
   return internetBlogCopyService;
}

/// 

/// Copy image between two Picture Libraries.
/// 
private void PostAnImageFromIntranetSiteToInternetSite()
{
   IntranetBlogCopyService.Copy intranetBlogCopyService = InitializeIntranetBlogCopyService();
   InternetBlogCopyService.Copy internetBlogCopyService = InitializeInternetBlogCopyService();

   string sourceAbsoluteUrl = "http://moss2010/sites/InternetBlog/Lists/Photos/image01.png";
   string[] destinationAbsoluteUrls = { "http://prasadmoss/sites/InternetBlog/Lists/Photos/image01.png" };

   IntranetBlogCopyService.FieldInformation intranetFieldInfo = new IntranetBlogCopyService.FieldInformation();
   IntranetBlogCopyService.FieldInformation[] intranetFieldInfoArray = { intranetFieldInfo };
   byte[] imageByteArray;
   uint getUint = intranetBlogCopyService.GetItem(sourceAbsoluteUrl, out intranetFieldInfoArray, out imageByteArray);

   // Create FieldInformation of InternetCopyService type.
   InternetBlogCopyService.FieldInformation internetFieldInfo = new InternetBlogCopyService.FieldInformation();

   // Copy individual fields.
   internetFieldInfo.DisplayName = intranetFieldInfoArray[0].DisplayName;
   internetFieldInfo.InternalName = intranetFieldInfoArray[0].InternalName;
   internetFieldInfo.Value = intranetFieldInfoArray[0].Value;
   internetFieldInfo.Id = intranetFieldInfoArray[0].Id;

   InternetBlogCopyService.FieldInformation[] internetFieldInfoArray = { internetFieldInfo };

   InternetBlogCopyService.CopyResult copyResult1 = new InternetBlogCopyService.CopyResult();
   InternetBlogCopyService.CopyResult[] copyResultArray = { copyResult1 };

   try
   {
   uint myCopyUint = internetBlogCopyService.CopyIntoItems(sourceAbsoluteUrl, destinationAbsoluteUrls, internetFieldInfoArray, imageByteArray, out copyResultArray);
   if (myCopyUint == 0)
   {
         int idx = 0;
         foreach (InternetBlogCopyService.CopyResult myCopyResult in copyResultArray)
         {
       string opString = (idx + 1).ToString();
       if (copyResultArray[idx].ErrorMessage == null)
       {
             // Copy operation success.
       }
       else
       {
             // Copy operation failed.
       }
       idx++;
         }
   }
   }
   catch (Exception ex)
   {
   // Error
   }
}