WPF 打印控件 无弹框打印。

WPF中打印用到了 PrintDialog类。

其中设置打印属性的是PrintTicket，管理打印机的是PrintQueue。

实例如下：

public class PrintDialogHelper
{
private const string PrintServerName = "YULIN-PC";
private const string PrintName = "HP LaserJet M1522 series PCL6 Class Driver";

public PrintDialogHelper()
{
}

/// <summary>
/// 打印控件
/// </summary>
/// <param name="element"></param>
public void PrintVisual(FrameworkElement element)
{
var printDialog = new PrintDialog();
SetPrintProperty(printDialog);
var printQueue = SelectedPrintServer(PrintServerName, PrintName);
if (printQueue != null)
{
printDialog.PrintQueue = printQueue;
printDialog.PrintVisual(element, "");
}
}

/// <summary>
/// 查找并获取打印机
/// </summary>
/// <param name="printerServerName">服务器名字： Lee-pc</param>
/// <param name="printerName">打印机名字：Hp laserjet m1522 mfp series pcl 6 </param>
/// <returns></returns>
public PrintQueue SelectedPrintServer(string printerServerName, string printerName)
{
try
{
var printers = PrinterSettings.InstalledPrinters;//获取本机上的所有打印机
PrintServer printServer = null;

foreach (string printer in printers)
{
if (printer.Contains(printerName))
printServer = new PrintServer("\\" + printerServerName);
}

if (printServer == null) return null;//没有找到打印机服务器

var printQueue = printServer.GetPrintQueue(printerName);
return printQueue;
}
catch (Exception)
{
return null;//没有找到打印机
}
}

/// <summary>
/// 设置打印格式
/// </summary>
/// <param name="printDialog">打印文档</param>
/// <param name="pageSize">打印纸张大小 a4</param>
/// <param name="pageOrientation">打印方向 竖向</param>
public void SetPrintProperty(PrintDialog printDialog, PageMediaSizeName pageSize = PageMediaSizeName.ISOA4, PageOrientation pageOrientation = PageOrientation.Portrait)
{
var printTicket = printDialog.PrintTicket;
printTicket.PageMediaSize = new PageMediaSize(pageSize);//A4纸
printTicket.PageOrientation = pageOrientation;//默认竖向打印
}
}