title: Crystal Report data loading from Dataset(.xsd) and WebService method
body: <p>I have a crystal report document, when design the report I have connected the Database expert from asp.net's Dataset(.xsd),at run time loading the Dataset value from a Web Service method, the web service method returns a DataSet Object. Here is the code for report invoking,</p>
  
  <pre><code>rpt = new ReportDocument();
  DataSet Ds = new DataSet();
  ST2013.ChoWebServ Cho = new ST2013.ChoWebServ();
  Ds = Cho.SalesDayBook("07/07/2012", "07/09/2012");
  rpt.Load(Server.MapPath("../Chocolates/SalesDayBook.rpt"));
  rpt.SetDataSource(Ds);
  ReportViewer.Enabled = true;                       
  ReportViewer.ReportSource = rpt;
  ReportViewer.DataBind();
  ReportViewer.EnableDrillDown = false;
  ReportViewer.Visible = true;
  </code></pre>
  
  <p>I'm getting the following error when run the report, </p>
  
  <blockquote>
    <p>Logon failed. Details: crdb_adoplus : Object reference not set to an instance of an object. Error in FileC:\Users\XXXXX\AppData\Local\Temp\SalesDayBook {B038BB50-51A1-4908-8613-7EF6591F7B26}.rpt: Unable to connect: incorrect log on parameters</p>
  </blockquote>
  
  <p>Please let me know what mistake I did?</p>