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C# Crystal Reports Dynamic Logon parameters

The following section describes how to pass the logon information like Server Name , database Name , User Name and password dynamically to the Crystal Reports from C# applications.

When you new in Crystal Report, many time you get this message.. Failed to open the connection . This is a common problem with embedding Crystal Reports in C#. The dynamic logon parameter passing will solve this issue.

When you run the previous programs in this C# tutorial , the Crystal Reports asks the Username and Password every time you run the Crystal Report. This section explains how to avoid the dialogue box asking username and password at runtime on Crystal Reports login . In this section we are passing User ID , Password , Server Name and Database Name dynamically to Crystal Reports from C# .

All C# Crystal Reports Tutorial in this website is based on the following database - crystaldb. So before you begin this section , please take a look at the database structure of crystaldb - Click Here C# crystaldb

If you are new to Crystal Reports and do not know how to create Crystal Reports from C# , please take a look at the section step by step tutorial for creating a Crystal Reports from C#.

In many situations dynamically passing the logon parameter fields are very useful , for example if you develop a database project in a test server environment and later you have to migrate it to other server , in these situations it is better to give these information dynamically to Crystal Reports .

In step by step tutorial for creating a Crystal Reports from C# - we created a report selecting all data from the Product table . There is no chance to change the server name or any other information on runtime in that case, because it is a static report and it will asks username and password every time you run the Crystal Reports . Here we are passing Server Name , UserID and Password dynamically to the Crystal Reports from our C# program

Here we use Crystal Reports ConnectionInfo class for passing connection information.

ConnectionInfo crConnectionInfo = new ConnectionInfo();

Select the default form (Form1.cs) you created in C# and drag a button and a CrystalReportViewer control to your form .

You have to include CrystalDecisions.CrystalReports.Engine in your C# Source Code.

using CrystalDecisions.CrystalReports.Engine;

using CrystalDecisions.Shared;

Copy and paste the following source code and run your C# project




using System;
using System.Windows.Forms;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ReportDocument cryRpt = new ReportDocument();
            TableLogOnInfos crtableLogoninfos = new TableLogOnInfos();
            TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
            ConnectionInfo crConnectionInfo = new ConnectionInfo();
            Tables CrTables ;

            cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt");

            crConnectionInfo.ServerName = "YOUR SERVER NAME";
            crConnectionInfo.DatabaseName = "YOUR DATABASE NAME";
            crConnectionInfo.UserID = "YOUR DATABASE USERNAME";
            crConnectionInfo.Password = "YOUR DATABASE PASSWORD";

            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(); 
        }
    }
}

cryRpt.Load(PUT CRYSTAL REPORT PATH HERE\\CrystalReport1.rpt");
The Crystal Reports file path in your C# project files location, there you can see CrystalReport1.rpt . So give the full path name of Crystal Reports file like c:\projects\crystalreports\CrystalReport1.rpt

You have to replace the source code values of
  crConnectionInfo.ServerName = "YOUR SERVER NAME";

crConnectionInfo.DatabaseName = "YOUR DATABASE NAME";
crConnectionInfo.UserID = "YOUR DATABASE USERNAME";
crConnectionInfo.Password = "YOUR DATABASE PASSWORD";

with your real-time values .

csharp-crystal-reports-final






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