Multiple Copies of Invoice

Check the below code, this may help you to resolve your issue.

private void btnPrint_Click(object sender, EventArgs e)
{
    // Assuming parameterValue is the variable storing the user-selected parameter value (Original/Duplicate/Triplicate/ALL)
    string parameterValue = "your-parameter-value";
    switch (parameterValue)
    {
        case "Original":
            PrintReport("Original");
            break;
        case "Duplicate":
            PrintReport("Duplicate");
            break;
        case "Triplicate":
            PrintReport("Triplicate");
            break;
        case "All":
            PrintReport("Original");
            PrintReport("Duplicate");
            PrintReport("Triplicate");
            break;
        default:
            // Handle any other cases or errors
            break;
    }
}

private void PrintReport(string selectedOption)
{
    ConnectionInfo connectionInfo = new ConnectionInfo
    {
        ServerName = @"Your-Server-Name",
        DatabaseName = "SampleDB",
        UserID = "sa",
        Password = "pa$$w0rd"
    };

    ReportDocument reportDocument = new ReportDocument();
    reportDocument.Load("path_to_your_report_file.rpt");
    reportDocument.SetParameterValue("SelectedOption", selectedOption);

    TableLogOnInfo tableLogOnInfo = new TableLogOnInfo();
    Tables crTables = _reportDocument.Database.Tables;
    foreach (CrystalDecisions.CrystalReports.Engine.Table crTable in crTables)
    {
        tableLogOnInfo = crTable.LogOnInfo;
        tableLogOnInfo.ConnectionInfo = connectionInfo;
        crTable.ApplyLogOnInfo(tableLogOnInfo);
    }

    reportDocument.Refresh();
    reportDocument.PrintToPrinter(1, false, 0, 0);
}

To achieve the desired result of printing multiple copies of an invoice with different labels using Crystal Report in C#, you can follow these steps:

1. Create a Crystal Report layout for the invoice with the necessary fields and design elements.

2. In your C# code, create an instance of the Crystal Report document and load the report layout.

3. Set the number of copies to be printed using the PrintToPrinter method of the Crystal Report document. This method allows you to specify the number of copies to be printed.

4. To add the labels "Original," "Duplicate," and "Triplicate" to each copy, you can use the ReportDocument.PrintOptions property. This property provides access to various print options, including the printer name, number of copies, and collation.

5. Use the ReportDocument.PrintOptions.PrinterName property to set the printer name to which the report should be sent.

6. Use the ReportDocument.PrintOptions.Copies property to set the number of copies to be printed.

7. Use the ReportDocument.PrintOptions.Collated property to specify whether the copies should be collated or not.

8. Finally, call the PrintToPrinter method of the Crystal Report document to print the invoice with the specified number of copies and labels.

Here's an example code snippet that demonstrates how to achieve this:

using CrystalDecisions.CrystalReports.Engine;

// Create an instance of the Crystal Report document
ReportDocument reportDocument = new ReportDocument();

// Load the report layout
reportDocument.Load("InvoiceReport.rpt");

// Set the printer name
reportDocument.PrintOptions.PrinterName = "Your Printer Name";

// Set the number of copies
reportDocument.PrintOptions.Copies = 3;

// Set the collation
reportDocument.PrintOptions.Collated = true;

// Print the report with the specified number of copies
reportDocument.PrintToPrinter(1, false, 0, 0);

Make sure to replace "InvoiceReport.rpt" with the actual path and filename of your Crystal Report layout file, and "Your Printer Name" with the name of your printer.