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; 
} 
} printform
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(); 
}
} 
} 
} 

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