Есть код из MSDN

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

//Crystal Report Variables
CrystalReport1 crReportDocument = new CrystalReport1();

//'CrystalReport1' must be the name the CrystalReport
TableLogOnInfo crTableLogOnInfo = new TableLogOnInfo();
ConnectionInfo crConnectionInfo = new ConnectionInfo();

//Crystal Report Properties
CrystalDecisions.CrystalReports.Engine.Database crDatabase;
CrystalDecisions.CrystalReports.Engine.Tables crTables;
CrystalDecisions.CrystalReports.Engine.Table crTable;
Then, use following code sample to add the logic in the Page_Load method of your Web Form:


crConnectionInfo.ServerName = "EnterServerNameHere";
crConnectionInfo.DatabaseName = "EnterDatabaseNameHere";
crConnectionInfo.UserID = "EnterUserIDHere";
crConnectionInfo.Password = "EnterPasswordHere";
crDatabase = crReportDocument.Database;
crTables = crDatabase.Tables;

foreach(CrystalDecisions.CrystalReports.Engine.Table crTable in crTables)
{
crTableLogOnInfo = crTable.LogOnInfo;
crTableLogOnInfo.ConnectionInfo = crConnectionInfo;
crTable.ApplyLogOnInfo(crTableLogOnInfo);
}

CrystalReportViewer1.ReportSource = crReportDocument;

1. не понятно CrystalReportViewer1.ReportSource = crReportDocument;
вот если было б так CrystalReportViewer1.ReportSource = "C:\\Inetpub\\wwwroot\\...\\CrystalReport1.rpt"; то понятно.
2. как мне динамически добавлять необходимые таблицы в отображаемый отчёт?