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如何设置为默认打印机

发布于 2024-10-20 00:58:38 字数 144 浏览 5 评论 0原文

如何将 PrintDocument.PrinterSettings.PrinterName 设置为默认打印机？

我不是在谈论在操作系统中设置默认打印机。相反，我讨论的是设置 PrintDocument 对象，以便它打印到默认打印机。

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两仪 2024-10-27 00:58:38

如果我理解正确，您希望能够将 PrinterName 重置为默认打印机(1)，而无需重新创建 PrintDocument ， (2)在您可能已经将其设置为其他内容之后 或者， (3) 当默认打印机自首次创建 PrintDocument 以来可能已更改 < em>（因此您不能仅仅依赖于在初始构建后简单地缓存目标实例提供的默认值）。

在这种情况下，搜索“C# get default Printer name”会在 stackoverflow 上找到以下优秀帖子：在 .NET 中获取默认打印机的最佳方法是什么

基于投票最高的答案中提供的示例并考虑到您已经有一个预先存在的 PrintDocument，其中包含一些您不想重新创建的设置；您可以创建 PrinterSettings 类的新实例，其唯一目的是复制默认打印机名称。

// Create a new instance of the PrinterSettings class, which 
// we will only use to fetch the default printer name
System.Drawing.Printing.PrinterSettings newSettings = new System.Drawing.Printing.PrinterSettings();

// Copy the default printer name from our newSettings instance into our 
// pre-existing PrintDocument instance without recreating the 
// PrintDocument or the PrintDocument's PrinterSettings classes.
existingPrintDocumentInstance.PrinterSettings.PrinterName = newSettings.PrinterName;

您可以查看链接的帖子以了解 WMI 等替代技术，但我认为这对您来说是最简单、最干净的解决方案。

If I'm understanding correctly, you would like to be able to reset the PrinterName to the default printer (1) without recreating your PrintDocument and, (2) after you may have already set it to something else or, (3) when the default printer may have changed since the time when the PrintDocument was first created (so you can't rely on simply caching the defaults provided by the target instance after initial construction).

In this case a search for "C# get default printer name" turns up the following excellent post on stackoverflow: What's the best way to get the default printer in .NET

Building on the sample provided in top voted answer and considering that you will already have a pre-existing PrintDocument with some settings you don't want to recreate; you could create a new instance of the PrinterSettings class, for the sole purposes of copying out the default printer name.

// Create a new instance of the PrinterSettings class, which 
// we will only use to fetch the default printer name
System.Drawing.Printing.PrinterSettings newSettings = new System.Drawing.Printing.PrinterSettings();

// Copy the default printer name from our newSettings instance into our 
// pre-existing PrintDocument instance without recreating the 
// PrintDocument or the PrintDocument's PrinterSettings classes.
existingPrintDocumentInstance.PrinterSettings.PrinterName = newSettings.PrinterName;

You can review the linked post for alternative techniques such as WMI, but I think this is the simplest and cleanest solution for you.

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他不在意 2024-10-27 00:58:38

它会自动初始化为默认打印机。什么都不做。

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甜嗑 2024-10-27 00:58:38

GetDefaultPrinter() 

{ PrinterSettings settings = new PrinterSettings(); 

foreach (string printer in PrinterSettings.InstalledPrinters) 

{ settings.PrinterName = printer; 

if (settings.IsDefaultPrinter) 

return printer; 

} 

return string.Empty; 

}

GetDefaultPrinter() 

{ PrinterSettings settings = new PrinterSettings(); 

foreach (string printer in PrinterSettings.InstalledPrinters) 

{ settings.PrinterName = printer; 

if (settings.IsDefaultPrinter) 

return printer; 

} 

return string.Empty; 

}

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