title: Datavalidation in silverlight with wcf service reference class
body: <p>HI,
  Am using <strong>wcf service</strong> with <strong>silverlight</strong> and my datacontract class is exposed in the reference file and am binding a collection of class type to datagrid and while clicking a particular row for editing the entire row data will be binded to a dataform and there i have to validate the fields and here am using a <strong>IDataErrorInfo</strong> interface to validte,Here in service reference file the class is a partial class and created a new cs file with same namespace of the servicefile and class name then implemented the <strong>IDataErrorInfo</strong> interface properties </p>
  
  <blockquote>
    <p>public string this[string
    columnName]{}</p>
  </blockquote>
  
  <p>in the scope i worte the validation .But it is not working can anyone help for this.
  Thanks</p>