C#PrintDocument和打印机状态 [英] C# PrintDocument and Printer Status

问题描述

我正在尝试使用以下代码获取PointOfSale打印机的打印机状态:

I am trying to get the printer status of a PointOfSale printer using the following code:

Hashtable properties = new Hashtable();
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win2_Printer");

foreach (ManagementObject obj in searcher.Get()) {
  if (obj["name"].ToString() == printerName) {
    foreach (PropertyData data in obj.Properties) {
      if(data.Name.ToLower() = "printerstatus") {
        int printerStatus = Convert.ToInt32(data.Value);
      }
    }
  }
}

问题是，即使拔掉电源或缺纸，状态也可能是3(空闲)或4(正在打印).

Problem is, the status is either 3 (idle) or 4(printing), even when unplugged or the paper is out.

我已经阅读了很多有关此问题的文章，但没有找到答案.这样对吗?我还要如何检查状态?感谢您的帮助.

I have read a lot of posts with this same issue, but have not found an answer. Is this correct? How else would I check the status? Any help is appreciated.

推荐答案

您在使用什么品牌的打印机?

What Brand of printer are you using?

有时候，品牌会提供您可以发送的特定命令来查询状态.

Sometimes the Brand will have a specific command you can send to query the status.

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