在C#中固定打印单据的行宽可以通过以下步骤实现:
以下是一个简单的示例代码:
using System;
using System.Drawing;
using System.Drawing.Printing;
public class PrintExample
{
private static int lineWidth = 80; // 行宽
public static void Main()
{
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(PrintPage);
pd.Print();
}
private static void PrintPage(object sender, PrintPageEventArgs e)
{
Graphics g = e.Graphics;
Font font = new Font("Arial", 12);
string documentText = "这是要打印的单据内容,可以是多行文本。";
string[] lines = SplitTextByWidth(documentText, lineWidth);
float y = 0;
foreach (string line in lines)
{
g.DrawString(line, font, Brushes.Black, 0, y);
y += font.GetHeight();
}
}
private static string[] SplitTextByWidth(string text, int width)
{
int startIndex = 0;
int endIndex = width;
int length = text.Length;
int lineCount = (length + width - 1) / width;
string[] lines = new string[lineCount];
for (int i = 0; i < lineCount; i++)
{
if (endIndex > length)
endIndex = length;
lines[i] = text.Substring(startIndex, endIndex - startIndex);
startIndex = endIndex;
endIndex += width;
}
return lines;
}
}
这个示例代码演示了如何使用C#打印固定行宽的单据。你可以根据实际需求进行修改和扩展。
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