how to create crystal reports from date to todate

string from_date = Request.QueryString["fromdate"];
string to_date = Request.QueryString["todate"];


import these namespace first :
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using CrystalDecisions.Reporting;

declare variable like :
ReportDocument cr;


then apply query :

protected void Page_Init(object sender, EventArgs e)
{

 String data = "SELECT * from table name where from_date>='"+from_date+"' and to_date<='"+to_date+"';

        SqlDataAdapter ad1 = new SqlDataAdapter(data, connection object);
        DataSet ds1 = new DataSet();
        ad1.Fill(ds1);


       path = Server.MapPath("Reportname");
        cr = new ReportDocument();
        cr.Load(path);

        cr.SetDataSource(ds1.Tables[0]);
        CrystalReportViewer1.ReportSource = cr;

}