A problem with printing in asp.net

Asp.net| Printing | questions
In ASP.net, you define the
Reportdocument rep = new CrystalReport2 ();
Rep. Setdatasource (This.datasetuser1);

This. Crystalreportviewer1.reportsource = rep;
Rep. Printtoprinter (1,false,1,1);
The result appears as follows:
A server error in the "/myweb/webapplication" application.


Error in file C:\docume~1\llm\aspnet\locals~1\temp\temp_15e5dcd2-3cbd-40fb-85be-b1251f6339ac.rpt: no default printer.
Note: An unhandled exception occurred during the execution of the current WEB request. Check the stack trace for more information about the error and where the error occurred in the code.

Exception Details: CrystalDecisions.CrystalReports.Engine.PrintException: File C:\docume~1\llm\aspnet\locals~1\temp\temp_ Error in 15E5DCD2-3CBD-40FB-85BE-B1251F6339AC.RPT: no default printer.

SOURCE Error:

Row 78:private void button2_click (object sender, System.EventArgs e)
Line 79: {
Line 80:rep. Printtoprinter (1,false,1,1);
Line 81:}
Line 82:}


A server error in the "/myweb/webapplication" application.


Error in file C:\docume~1\llm\aspnet\locals~1\temp\temp_15e5dcd2-3cbd-40fb-85be-b1251f6339ac.rpt: no default printer.
Note: An unhandled exception occurred during the execution of the current WEB request. Check the stack trace for more information about the error and where the error occurred in the code.

Exception Details: CrystalDecisions.CrystalReports.Engine.PrintException: File C:\docume~1\llm\aspnet\locals~1\temp\temp_ Error in 15E5DCD2-3CBD-40FB-85BE-B1251F6339AC.RPT: no default printer.

SOURCE Error:

Row 78:private void button2_click (object sender, System.EventArgs e)
Line 79: {
Line 80:rep. Printtoprinter (1,false,1,1);
Line 81:}
Line 82:}