winform 打印图片
时间: 2023-12-06 13:03:09 浏览: 125
以下是在Winform中打印图片的步骤和示例代码:
1.注册PrintPage事件处理程序,在每一页准备好打印时触发。
```csharp
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
// 加载要打印的图片
Image image = Image.FromFile("image.jpg");
// 计算适合打印区域的大小
Rectangle rect = e.MarginBounds;
float widthRatio = (float)image.Width / (float)rect.Width;
float heightRatio = (float)image.Height / (float)rect.Height;
if (widthRatio > heightRatio)
{
rect.Height = (int)((float)image.Height / widthRatio);
}
else
{
rect.Width = (int)((float)image.Width / heightRatio);
}
// 将图片绘制到打印区域上
e.Graphics.DrawImage(image, rect);
}
```
2.调用PrintImage()方法并传入要打印的图片路径,即可自动获取默认打印机并进行打印。
```csharp
private void PrintImage(string imagePath)
{
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
pd.Print();
}
```
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