从记事本一次打印一行 [英] Print one line at a time from notepad

问题描述

大家好



以下是我用于从记事本打印epson存折打印机的代码

  string  name; 
 name =   C：\\Display.txt; 
  //  打开文件。 
 FileStream fs =  new  FileStream（name，FileMode.Open）; 
  //   printFont = new Font（Lucida Console，9）;  
  //  在文件上创建一个BinaryReader。 
 BinaryReader br =  new  BinaryReader（fs）; 
  //  将一个大小足以保存文件内容的字节数组调暗。 
 字节 [] bytes =  new  字节 [fs.Length]; 
  int  bSuccess =  0 ; 
  //  您的非托管指针。 
  IntPtr  pUnmanagedBytes =  new   IntPtr （ 0 ）; 
  int  nLength; 
 
 nLength = Convert.ToInt32（fs.Length）; 
  //  将文件内容读入数组。 
 bytes = br.ReadBytes（nLength）; 
  //  为这些字节分配一些非托管内存。 
 pUnmanagedBytes = Marshal。 AllocCoTaskMem（nLength）; 
  //  将托管字节数组复制到非托管数组中。 
 Marshal。复制（字节， 0 ，pUnmanagedBytes，nLength）; 
 PrtSetFont（ 10002 ）; 
 PrtPosAbsV（ 2 ）; 
 PrtPosAbsH（ 5 ）; 
 PrtPosRelV（ 2 ）; 
 PrtPosRelH（ 1 ）; 
 fs.Close（）; 
  int  lines1 = File.ReadAllLines（name）.Count（）; 
  int  Number1 = lines1 /  26 ; 
  if （lines1 >   26 ）
 {
 File.WriteAllText（  C：\\Display-1 .txt， String  .Empty）; 
 bSuccess = PrtWrite（pUnmanagedBytes，nLength）; 
 
} 
 

这里我从记事本中取出格式化数据并写入另一个记事本并发送到PrtWrite（），这是一次打印数据。



现在我必须一次发送一行。



请告诉我如何执行此操作。

解决方案

您可以遍历文件的行，然后进行处理。请参阅 http://msdn.microsoft.com/en-us/library/ dd383503（v = vs.110）.aspx [ ^ ]

有关如何使用File.ReadLines（）循环遍历源文件行的示例

首先，你从记事本中找不到任何东西。



那些是文本文件，而不是记事本。在他们无法弄清楚你在谈论什么的时候开始混淆人们的垃圾之前，要弄清楚术语是正确的。

 nLength =转换。 ToInt32（fs.Length）; 

为什么要尝试将整数转换为整数？

如果这些是文本文件那么你应阅读如何：从文件中读取文本 [ ^ ]。

Hi all

Below is the code i am using to print in epson passbook printer from notepad

string name;
                       name = "C:\\Display.txt";
                       // Open the file.
                       FileStream fs = new FileStream(name, FileMode.Open);
                       //printFont = new Font("Lucida Console", 9);
                       // Create a BinaryReader on the file.
                       BinaryReader br = new BinaryReader(fs);
                       // Dim an array of bytes big enough to hold the file's contents.
                       Byte[] bytes = new Byte[fs.Length];
                       int bSuccess=0;
                       // Your unmanaged pointer.
                       IntPtr pUnmanagedBytes = new IntPtr(0);
                       int nLength;

                       nLength = Convert.ToInt32(fs.Length);
                       // Read the contents of the file into the array.
                       bytes = br.ReadBytes(nLength);
                       // Allocate some unmanaged memory for those bytes.
                       pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
                       // Copy the managed byte array into the unmanaged array.
                       Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
                       PrtSetFont(10002);
                       PrtPosAbsV(2);
                       PrtPosAbsH(5);
                       PrtPosRelV(2);
                       PrtPosRelH(1);
                       fs.Close();
                       int lines1 = File.ReadAllLines(name).Count();
                       int Number1 = lines1 / 26;
                       if (lines1 > 26)
                       {
                           File.WriteAllText("C:\\Display-1.txt", String.Empty);
                           bSuccess = PrtWrite(pUnmanagedBytes, nLength);

                       }

Here i am taking the formatted data from notepad and writing to another notepad and sending to PrtWrite() which is printing the data at a time.

Now i have to send one line at a time.

Please tell me how to do this.

解决方案

You can loop through the lines of the file and then do your processing. See http://msdn.microsoft.com/en-us/library/dd383503(v=vs.110).aspx[^]
for an example of how to loop through the lines of your source file using File.ReadLines()

First, you're not going anything at all "from notepad".

Those a "text files", not "notepads". Get the terminology correct before you start confusing the crap out of people when they can't figure out what you're talking about.

nLength = Convert.ToInt32(fs.Length);

Why are you trying to convert an integer to an integer?
Also if these are text files then you should read How to: Read Text from a File[^].

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