Add Excel Web Renderer Webpart From SilverLight ObjectModel

Hi,
First in How To's :)
To add a Excel Webpart from Silverlight oject Model -





ClientContext cnt = new Microsoft.SharePoint.Client.ClientContext("http://hydhtc130180d:3333/");
if (cnt == null)
{
throw new Exception("connection failed");
}
else
{
string ewaWebpart = "<?xml version='1.0' encoding='utf-8'?><webParts><webPart xmlns='http://schemas.microsoft.com/WebPart/v3'><metaData>";
ewaWebpart +="<type name='Microsoft.Office.Excel.WebUI.ExcelWebRenderer, Microsoft.Office.Excel.WebUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' />";
ewaWebpart +="<importErrorMessage>Cannot import this Web Part.</importErrorMessage>";
ewaWebpart +="</metaData>";
ewaWebpart +="<data>";
ewaWebpart += "<properties>";
ewaWebpart += "<property name='Title' type='string'>ExcelWebRenderer</property>";
ewaWebpart += "</properties>";
ewaWebpart +="</data></webPart></webParts>";
LimitedWebPartManager limitedWebPart = cnt.Web.GetFileByServerRelativeUrl("/SitePages/mypage.aspx").GetLimitedWebPartManager(PersonalizationScope.Shared);

WebPartDefinition ewaWebPartDef = limitedWebPart.ImportWebPart(ewaWebpart);
limitedWebPart.AddWebPart(ewaWebPartDef.WebPart,"Left",1);


cnt.ExecuteQueryAsync(s1, f1);

External List

Good Morning--
The Normal sharepoint but it gets data from Line of Business Object..confusing right?
This is new feature of Sps2010 where the sharepoint list can import all data from any external system using 'Business Connectivity System' [BDC in MOSS]
The cool feature is after getting all data from external system, the developer can play with it like normal sharepoint list, can add column, data into column etc.