How to solve "In this method is inappropriate in the web context" error

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ASP.NET

My requirement is end user report designer in asp.net
Steps:
I am adding devexpress dlls into web application.
After that i am adding Xtrareport1 class. It is derivied from xtrareport into the solution, In that class i am designing label controls and assign the dataset , dataadpter to the xtrareport1.

After that In default.aspx page , I am addig divexpress reportviewer.
In this default.aspx.cs page below code is written

XtraReport1 report=new XtraReport1();
reportviewer1.Report=report;

report.ShowDesigner(); ----------- In this method sending exception i.e, In this method is inappropriate in the web context.

How to solve this error.Please send reply as soon as possible .


Thank you,
Padmavathi.