Crystal report show the blank page in c#.net

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C#3.0

C#

Hi ,

I m working in c# Visual Studio 2008. when i run the project first time crystal report show the blank page after that i pressed refresh button report will display.i tried all report refresh concept but thats not working.

can u anyone plz tell me the solution for this...

Coding

   Report_AMCDataPreview report1 = new Report_AMCDataPreview();
   report1.SetDataSource(dd.Tables[0]);
   report1.SetDatabaseLogon("Admin", "jts100");
   crystalReportViewer1.ReportSource = null;
   crystalReportViewer1.ReportSource = report1;

help me! urgent !