C#

using CrystalDecisions.CrystalReports.Engine.Migration ;
using CrystalDecisions.Shared;
using CrystalDecisions.Shared.Interop;
using System.Data.SqlClient;
using CrystalDecisions.Web;
using CrystalDecisions.Enterprise;
using CrystalDecisions.ReportAppServer;
using CrystalDecisions.Reporting.WebControls;
using CrystalDecisions.ReportSource;
using CrystalDecisions.CrystalReports;
using CrystalDecisions.Web.Services;
//using CrystalDecisions.CrystalReports.Engine.Table ;
    
 //using System.Web.UI.WebControls.

public partial class _Default : System.Web.UI.Page
{   
     
    //ReportDocument objtemp = new ReportDocument();

    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;
    
    CrystalDecisions.CrystalReports.Engine.ReportDocument crReportDocument = new CrystalDecisions.CrystalReports.Engine.ReportDocument();
   

    protected  void Page_Load(object sender, EventArgs e)
    {
        
        crConnectionInfo.ServerName = "SERVER";

        crConnectionInfo.DatabaseName = "RESERVATION";
               crConnectionInfo.UserID = "sa";
        crConnectionInfo.Password = "sa";
        crDatabase = crReportDocument.Database;
        //crTable.Location = "RESERVATION.dbo.MB_TripSheetMaster";
        crTables = crDatabase.Tables;
        crReportDocument.Load(@"C:\Test\CrystalReportTest.rpt");
       for (int i = 0; i < crTables.Count; i++)

      {
         crTable = crTables [i];
         crTableLogOnInfo = crTable.LogOnInfo;
         crTableLogOnInfo.ConnectionInfo =crConnectionInfo;
         crTable.ApplyLogOnInfo(crTableLogOnInfo);
        crTable.Location = "RESERVATION.dbo." + crTable.Location.Substring(crTable.Location.LastIndexOf(".") + 1);

         
           


       }
                CrystalReportViewer1.ReportSource = crReportDocument ;
    }
}
<\pre>

i use ReportDocument because in my application crystal report object is not set,when run my code it shows Invalid report file path.i don't know what is happinning ,i have done lot of research on it but i  don't find the right solution,i don't know what is my mistak when i run this code ,plz help me anybody
thank you very much for your support
</\pre>

[id(9), helpstring("method GetString")] HRESULT GetString([out] LPSTR* word, [out, retval] int* count);

STDMETHOD(GetString)(/*[out]*/ LPSTR* word, /*[out, retval]*/ int* count);

STDMETHODIMP CLicenser::GetString(LPSTR* word, int *count)
{
     // helper class is some class that provides information that we need...

     *count = this->helperClass.GetCount();  // count works fine anytime.
   
     *word = this->helperClass.GetWord();  // this causes Attemped to read or write protected memory...
     // *word = "some text";         // !!! this works fine, if former line is commented out, this method throws
                                     // no Exception !!!.

     cout << "word:" << *word << endl;  // word is displayed correctly in console window (Console is created by                                                                                                                          
                                        //C# application)
   
     return S_OK;
}

int IClassNameObject.GetString(out string);