Dynamic Crystal Report Connection String Using Asp.net

Dynamic crystal report connection string required for transfer application dev to test.Normally developer working in devlopment server and after complet the development it will deploy the application into TEST or Production Server .In this case crystal report have not worked if you are specially using oracle stored procedure .Here I explain you how to create function for dynamic connection with stored procedure.

using CrystalDecisions.CrystalReports.Engine; 

using CrystalDecisions.Shared; 

public ReportDocument ConnectionInfo(ReportDocument rpt)
   {
       ReportDocument crSubreportDocument;
       string[] strConnection = ConfigurationManager.ConnectionStrings[("AppConn")].ConnectionString.Split(new char[] { ';' });

       Database oCRDb = rpt.Database;

       Tables oCRTables = oCRDb.Tables;

       CrystalDecisions.CrystalReports.Engine.Table oCRTable = default(CrystalDecisions.CrystalReports.Engine.Table);

       TableLogOnInfo oCRTableLogonInfo = default(CrystalDecisions.Shared.TableLogOnInfo);

       ConnectionInfo oCRConnectionInfo = new CrystalDecisions.Shared.ConnectionInfo();

       oCRConnectionInfo.ServerName = strConnection[0].Split(new char[] { '=' }).GetValue(1).ToString();
       oCRConnectionInfo.Password = strConnection[2].Split(new char[] { '=' }).GetValue(1).ToString();
       oCRConnectionInfo.UserID = strConnection[1].Split(new char[] { '=' }).GetValue(1).ToString();

       for (int i = 0; i < oCRTables.Count; i++)
       {
           oCRTable = oCRTables[i];
           oCRTableLogonInfo = oCRTable.LogOnInfo;
           oCRTableLogonInfo.ConnectionInfo = oCRConnectionInfo;
           oCRTable.ApplyLogOnInfo(oCRTableLogonInfo);
           if (oCRTable.TestConnectivity())
               //' If there is a "." in the location then remove the
               // ' beginning of the fully qualified location.
               //' Example "dbo.northwind.customers" would become
               //' "customers".
               oCRTable.Location = oCRTable.Location.Substring(oCRTable.Location.LastIndexOf(".") + 1);


       }

       for (int i = 0; i < rpt.Subreports.Count; i++)
       {

           {
               //  crSubreportObject = (SubreportObject);
               crSubreportDocument = rpt.OpenSubreport(rpt.Subreports[i].Name);
               oCRDb = crSubreportDocument.Database;
               oCRTables = oCRDb.Tables;
               foreach (CrystalDecisions.CrystalReports.Engine.Table aTable in oCRTables)
               {
                   oCRTableLogonInfo = aTable.LogOnInfo;
                   oCRTableLogonInfo.ConnectionInfo = oCRConnectionInfo;
                   aTable.ApplyLogOnInfo(oCRTableLogonInfo);
                   if (aTable.TestConnectivity())
                       //' If there is a "." in the location then remove the
                       // ' beginning of the fully qualified location.
                       //' Example "dbo.northwind.customers" would become
                       //' "customers".
                      aTable.Location = aTable.Location.Substring(aTable.Location.LastIndexOf(".") + 1);

               }
           }
       }
       //  }

       rpt.Refresh();
       return rpt;
   }

This will not work with oracle packages.

source : https://dotnetfarrukhabbas.blogspot.com/2010/10/create-dynamic-connection-with-crystal.html