如何在Windows窗体应用程序中使用C＃将Crystal Report连接到MS Access数据库

Question

I want to connect Crystal Reports to MS Access database using C# in my windows form application.

I am using below code to connect crystal report with MS Access database but it is not working.

ReportDocument crReport = new ReportDocument(); 
string sTemplatePath = "D:\\Report\\Sample.rpt";

crReport.Load(sTemplatePath);

TableLogOnInfo crTableLogOnInfo = new TableLogOnInfo(); 
ConnectionInfo tConnInfo = new ConnectionInfo(); 
tConnInfo.DatabaseName = "D:\\AccessDB\\AccessDb.mdb"; 
tConnInfo.Password = "abcd"; 
foreach (CrystalDecisions.CrystalReports.Engine.Table crTable in crReport.Database.Tables) 
{             
    crTableLogOnInfo = crTable.LogOnInfo;
    crTableLogOnInfo.ConnectionInfo = tConnInfo;
    crTable.ApplyLogOnInfo(crTableLogOnInfo); 
}

Can anyone help me to achieve this task? I will be very thankful to you.

Answer 1

Steps you need to take:

1. Create your .rpt file. For this I always use a separate library in which I keep all my reports, but this is not necessary, you can do it in your main solution. Either way, you must make sure you have references to CrustalDecisions.CrystalReports.Engine; CrustalDecisions.ReportSource; CrustalDecisions.Shared; and CrustalDecisions.Windows.Forms.
2. You can now right-click your project, Add, New Item, and then under Visual c# you will see Crystal Reports. Choose your report name, click Add, Accept the default of Using the Report Wizard and Standard layout. Now expand Create New Connection, click Access/Excel and you will be prompted for the location of your database file. Since you have password protected it, you must now click Secure Logon and enter the password (as Database password). When you click Finish, you should now see your database file and under it a list of tables etc. Select the one(s) that are the basis for your report, use the arrow to move it/them to Selected tables (right hand side). Click Next and then select the Fields that you need in the same way. You may now click Finish.
3. Add A CrystalReportViewer control to a Form which is to be the "host" form for the report.
4. Use the same c# code as you have in the constructor of your host form to connect to the database. This may be a different database with a different password, as long as it has the same table(s).

5. Finally add the following code:

    //Assign data source details to the report viewer if (this.crystalReportViewer1.LogOnInfo != null) { TableLogOnInfos tlInfo = this.crystalReportViewer1.LogOnInfo; foreach (TableLogOnInfo tbloginfo in tlInfo) { tbloginfo.ConnectionInfo = tConnInfo; } } crystalReportViewer1.ReportSource = crReport; 

Once you have got the basics working, you can start playing around with the design of your report, using the WYSIWYG designer!