PrintDocument打印、预览、打印机设置和打印属性的方法（较完整） .

private void Form1_Load(object sender, System.EventArgs e)
{
//获取或设置一个值，该值指示是否发送到文件或端口
printDocument1.PrinterSettings.PrintToFile = true;
//设置打印时横向还是纵向
printDocument1.DefaultPageSettings.Landscape = true;
}
private void fileOpenMenuItem_Click(object sender, System.EventArgs e)
{
OpenFile();
}
private void OpenFile()
{
openFileDialog1.Filter = "Text Files (*.txt)|*.txt";//打开文本的类型
//获取文件对话框的初始目录（StartupPath）获得bin文件下的文件
openFileDialog1.InitialDirectory = System.Windows.Forms.Application.StartupPath;
DialogResult userResponse = openFileDialog1.ShowDialog();
//MessageBox.Show(userResponse.ToString());
if (userResponse==DialogResult.OK)
{
filePath = openFileDialog1.FileName.ToString();//转换文件路径
}
}
private void MyPrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
//充分利用e
{

int topMargin = printDocument1.DefaultPageSettings.Margins.Top;//上边距
int leftMargin = printDocument1.DefaultPageSettings.Margins.Left;//左边距
float linesPerPage = 0;//页面行号
float verticalPosition = 0;//绘制字符串的纵向位置
float horizontalPosition=leftMargin;//左边距
string textLine = null;//行字符串
currentLine = 0;//行计数器
// float Xline=0;
//int line=0;
// Calculate the number of lines per page.
linesPerPage = e.MarginBounds.Height / myFont.GetHeight(e.Graphics);
// Xline=e.MarginBounds.Width/myFont.GetHeight();

// for each text line that will fit on the page, read a new line from the document
while (currentLine < linesPerPage )
{
textLine = streamToPrint.ReadLine();
if(textLine == null)
{
break;
}
// 求出已经打印的范围

verticalPosition = topMargin + currentLine * myFont.GetHeight(e.Graphics);
// 设置页面的属性
e.Graphics.DrawString(textLine, myFont, myBrush, horizontalPosition, verticalPosition);
// 增加行数
currentLine ++;

}
// If more lines of text exist in the file, print another page.
if (textLine != null)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
}
}
private void printPreviewButton_Click(object sender, System.EventArgs e)
{
try
{
streamToPrint = new StreamReader(filePath);
try
{
PrintPreview();
}
finally
{
streamToPrint.Close();
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void runtimeDialogButton_Click(object sender, System.EventArgs e)
{
try
{
streamToPrint = new StreamReader(filePath);
try
{
RuntimeDialog();
}
finally
{
streamToPrint.Close();
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void printPreviewControlButton_Click(object sender, System.EventArgs e)
{
try
{
streamToPrint = new StreamReader(filePath);
try
{
PrintPreviewControl();
}
finally
{
streamToPrint.Close();
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void RuntimeDialog()
{
PrintPreviewDialog pPDlg;
pPDlg = new PrintPreviewDialog();
pPDlg.Document = pDoc;
pPDlg.WindowState = FormWindowState.Maximized;
pPDlg.PrintPreviewControl.Columns = 2;
pPDlg.ShowDialog();
pPDlg.Dispose();
}
private void PrintPreviewControl()
{
Form formPreview = new Form();
PrintPreviewControl previewControl = new PrintPreviewControl();
previewControl.Document = printDocument1;
previewControl.StartPage = 2;
formPreview.WindowState = FormWindowState.Maximized;
formPreview.Controls.Add(previewControl);
formPreview.Controls[0].Dock = DockStyle.Fill;
formPreview.ShowDialog();
formPreview.Dispose();
}

private void PrintPreview()
{
//设置页面的预览的页码
//设置显示页面显示的大小(也就是原页面的倍数)
printPreviewDialog1.PrintPreviewControl.StartPage = 0;
printPreviewDialog1.PrintPreviewControl.Zoom =1.0;
//设置或返回窗口状态，即该窗口是最小化、正常大小还是其他状态。
printPreviewDialog1.WindowState = FormWindowState.Maximized;
//设置和获取需要预览的文档
//将窗体显示为指定者的模式对话框
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.ShowDialog();
}
private void PrintDoc()
{
printDialog1.Document = printDocument1;
DialogResult userResPonse= printDialog1.ShowDialog();
if(userResPonse==DialogResult.OK)
{
printDocument1.Print();
}
}
//获取打印机的设置和打印的属性
private void button1_Click(object sender, System.EventArgs e)
{
try
{
streamToPrint=new StreamReader(filePath);
try
{
PrintDoc();
}
catch{}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
streamToPrint.Close();
}

}
}
}