How to Pass Parameters in Crystal reports and fecth the records from the sql database in asp.net

Hi Friend, Today we will learn"How to pass parameter in Crystal reports and fetch the records from the sql database on behalf of parameter pass in text box".Suppose, you have many records in your database and want to sort the records then you have to sort the records on the basis of any one column value in your database.Here we will pass this parameter value in crystal reports and display the sorted records in crystal reports.then you can download or print this records from the crystal reports. In previous post, you have learned as following. 

• How to install crystal reports in your visual studio 
• How to display data in report viewer control in asp.net
• How to display data in crystal reports viewer control esaily

There are some steps to implements this whole concepts as given below:-

Step 1:- First Create Crystal reports from Here (Follow step 1 to step 9 only).
Note:-Here,i have used  Student1 table instead of employee table as shown below:-

Step 2:- After performed step 1  ,you will see following output as shown below:-

Step 3:- Now Right click on Parameter fields --> new --> Now Write Name of parameter,Select its Type,Select ValueField and select Description Field as shown below -->OK

Step 4:- Now open Parameter Fields -->Select City --> Press Select Expert -->and select Required fields as shown below:-

Note :- Now Crystal Reports is ready to access with the help of parameter (City).
Step 5:-Now Open  Solution Explorer-->Open Default.aspx  --> Press Smart Tag Right hand side of Crystal Reports Viewer --> Select Choose a Tool Panel view (ParameterPanel) and Unchecked three checked boxes as shown below:-

Step 6:- Now open Default.aspx page--> Drag and Drop one Text Box and Button Controls  from the Toolbox as shown below:-

Step 7:-Now open Default.aspx.cs file -->Write the c# codes on Proceed Button"s click to access the database records with the help of parameter value City as given below:- 

using System;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Web;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        ReportDocument report1 = new ReportDocument();
        report1.Load(Server.MapPath("CrystalReport1.rpt"));
        report1.SetDatabaseLogon("","","RAMASHANKAR-PC","master");
        report1.SetParameterValue("City",TextBox1.Text);
        CrystalReportViewer1.ReportSource = report1;
    }
}

Descriptions:-
report1.SetDatabaseLogon("","","RAMASHANKAR-PC","master")
Here this method takes four parameters.

1. User Name
2. Password
3. Server Name
4. Database Name

I have putted First two arguments blanks. If you have already configured user name and password in your sql server database then you can put it on blank space.Otherwise there is no need for this fields, you can access your sql database with other two parameters(sever name and database ) also.
Step 8:- Now Run the application (press F5) --> Now write City Name in Text Box -->Press proceed Button as shown below:-

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