Hi iam write this code

"

 XmlTextReader read = new XmlTextReader("http://msdn.microsoft.com/rss.xml");
        DataSet ds = new DataSet();
        ds.ReadXml(read);
        ListView1.DataSource = ds.Tables[4];
        ListView1.DataBind(); "

which error is happing

"Cannot give a nested relation or perhaps an element column to some table that contains a SimpleContent column"

It appears much like your xml consists of a component that has both text children (simple content) along with other element children.

DataSet doesn't allow a table to possess both simple content posts in addition to element posts.

See http://msdn2.microsoft.com/en-us/library/zx8h06sz.aspx