winform打印问题.打印一图片,预览图片总是在左上角.如何调整居中.及其大小?
winform打印问题.打印一图片,预览图片总是在左上角.如何调整居中.及其大小?

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Winfrom 自带控制还是三方控件?
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private void button2_Click(object sender, EventArgs e)
{
PrintDocument _Docunment = new PrintDocument();
_Docunment.PrintPage += new PrintPageEventHandler(_Docunment_PrintPage);

PrintPreviewDialog _Dilaog = new PrintPreviewDialog();
_Dilaog.Document = _Docunment;
_Dilaog.ShowDialog();
}

void _Docunment_PrintPage(object sender, PrintPageEventArgs e)
{
Image _PrintImage =this.Icon.ToBitmap();
int _X = (e.PageBounds.Width- _PrintImage.Width) / 2;
int _Y = (e.PageBounds.Height - _PrintImage.Height) / 2;

e.Graphics.DrawImage(_PrintImage, _X, _Y, _PrintImage.Width, _PrintImage.Height);

}

------解决方案--------------------
如果根据比例调整大小 可以偷懒使用PictureBox

void _Docunment_PrintPage(object sender, PrintPageEventArgs e)
{
Image _PrintImage =this.Icon.ToBitmap();

PictureBox _PictureBox = new PictureBox();
_PictureBox.BackColor = Color.White;
_PictureBox.Size = e.PageBounds.Size;
_PictureBox.SizeMode = PictureBoxSizeMode.Zoom;
_PictureBox.Image = _PrintImage;
Bitmap _Bitmap = new Bitmap(e.PageBounds.Width, e.PageBounds.Height);
_PictureBox.DrawToBitmap(_Bitmap, new Rectangle(0, 0, _Bitmap.Width, _Bitmap.Height));

e.Graphics.DrawImage(_Bitmap,0,0,_Bitmap.Width,_Bitmap.Height);
}