i want to display a report by using crystal report viewer in c#.net(window application)

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C#

SQL

there are two tables

1. mfpopulation
2. vvmaster

1. table contain->a.vid as primary key
b. vname

2. table contain-> ppl_id as primary key
b. tlplf
c. tlplm
d. tlpl
e. vdate as date time

Ihe data from crystal report is vname ,tltpl,tlplm,tlplf and vdate

I am using crystal report for make report using data betwwen two date selected by two datetime pickrs i.e datetimepicker1 and datetimepickr2

I make two parameters fromdate and todate in crystal report
the code is

private void button1_Click_1(object sender, EventArgs e)
{
   // CrystalReport3 cr = new CrystalReport3();
    ReportDocument cryRpt = new ReportDocument();
    //crystalReportViewer1.ReportSource = cr;
    cryRpt.Load(@"E:\\grabone1\\grabone1\\CrystalReport3.rpt");
   TableLogOnInfos crtableLogoninfos = new TableLogOnInfos();
    TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
    ConnectionInfo crConnectionInfo = new ConnectionInfo();

    Tables CrTables;
    ParameterFieldDefinitions crParameterFieldDefinitions;
    ParameterFieldDefinition crParameterFieldDefinition;
    ParameterValues crParameterValues = new ParameterValues();
    ParameterDiscreteValue crParameterDiscreteValue = new ParameterDiscreteValue();

    crParameterDiscreteValue.Value = dateTimePicker1.Text;
    crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields;
    crParameterFieldDefinition = crParameterFieldDefinitions["fromDate"];
    crParameterValues = crParameterFieldDefinition.CurrentValues;
    crParameterValues.Clear();
    crParameterValues.Add(crParameterDiscreteValue);
    crParameterFieldDefinition.ApplyDefaultValues(crParameterValues);
    crParameterDiscreteValue.Value = dateTimePicker2.Text;
    crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields;
    crParameterFieldDefinition = crParameterFieldDefinitions["toDate"];
    crParameterValues = crParameterFieldDefinition.CurrentValues;
    crParameterValues.Add(crParameterDiscreteValue);
    crParameterFieldDefinition.ApplyDefaultValues(crParameterValues);
    crConnectionInfo.ServerName = "localhost";
    crConnectionInfo.DatabaseName = "childbelfare";
    crConnectionInfo.UserID = "sa";
    crConnectionInfo.Password = "sa";

    CrTables = cryRpt.Database.Tables;
    foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)
    {
        crtableLogoninfo = CrTable.LogOnInfo;
        crtableLogoninfo.ConnectionInfo = crConnectionInfo;
        CrTable.ApplyLogOnInfo(crtableLogoninfo);
    }
    crystalReportViewer1.ReportSource = cryRpt;
   crystalReportViewer1.Refresh();
}

Problem is after running the programe the cystal viewer show message "no data is loaded"