change server name later in crystal report

protected SampleReport testReport=new SampleReport();   //object of the report file

TableLogOnInfo crTableLogOnInfo = new TableLogOnInfo();

ConnectionInfo crConnectionInfo = new ConnectionInfo();

CrystalDecisions.CrystalReports.Engine.Tables crTables;

{

crConnectionInfo.ServerName = "localHost";

// or Ip address of the machine on which the programme is loaded

crConnectionInfo.DatabaseName = "TestDatabase";   //database name

crConnectionInfo.UserID = "sa";

crConnectionInfo.Password = "";

crDatabase = testReport.Database;

crTables = crDatabase.Tables;

{

crTableLogOnInfo = crTable.LogOnInfo;

crTableLogOnInfo.ConnectionInfo = crConnectionInfo;

crTable.ApplyLogOnInfo(crTableLogOnInfo);

}

}

/* I hope this code will solve your problem*/