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Automatically Printing Crystal Reports in ASP.NET


This server-based method is documented in the Visual Studio help files.  Open the Help Index, and enter PrintToPrinter in the "Look for:" box.  The syntax for this method is:
Report.PrintToPrinter(<copies as int>, <collated as True/False>, <startpage as int>, <endpage as int>)
'Collated' in this context has nothing to do with database collation.  Some advanced printers (like copier/printers) will sort each document into its own shelf.  Not every printer supports this functionality, so check the printer dialog before setting to true.  To print the entire report, set startpage and endpage each to 0. 
An example in use might look like
MyReport.PrintToPrinter(1,False,0,0)
One limitation of this method is that a printer name must be specified.  You can set the default printer at design time in the report, and you can change the printer name at run time by setting the ReportDocument.PrintOptions.PrinterName pro ......

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ASP.NET DBHelperÀà

using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Data.Common;
using System.Data;
namespace DownData.dal
{
    public static class DBHelper
    {
        private static readonly string connectionString =
            "Data Source=.\\newdb;Initial Catalog=downloaddata; uid=sa;pwd=sa";
        private static readonly string providerName ="System.Data.SqlClient";
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        private static DbConnection GetConnection()
        {
            DbProviderFactory _factory = DbProviderFactories.GetFactory(providerName);
       ......
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