Print and Export to USB (File Format: XML/CSV/Excel) Functionality in Smart device[Symbo Motoroal MC75(Windows Mobile 6.1)] application?

问题

I have a form which contains combo boxes, textboxes and a data grid with many rows. I want to take print out (with generated barcode [application generating barcode as image]) and also want to export the data in that page as CSV/XML/Excel format to USB or Phone's Physical Directory. Please guide me how to it. This is my first Windows Mobile app. I am not so wise in Windows Mobile. Please help me find a better solution as a code or link or just direct me.

回答1:

To create the Print Out, you will have to write to your PrintDocument using GDI. There is nothing really built in. You could possibly do a screenshot (code below).

Exporting data to CSV is best done on your own as well. Just Create/Open a file stream and write whatever you want to it.

Screenshot: Requires PInvoke to BitBlt and GetDC

const int SRCCOPY = 0x00CC0020;

[DllImport("coredll.dll")]
private static extern int BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, uint dwRop);

[DllImport("coredll.dll")]
private static extern IntPtr GetDC(IntPtr hwnd);

public Bitmap ScreenCapture(string fileName) {
  Bitmap bitmap = new Bitmap(this.Width, this.Height);
  using (Graphics gScr = Graphics.FromHdc(GetDC(IntPtr.Zero))) { // A Zero Pointer will Get the screen context
    using (Graphics gBmp = Graphics.FromImage(bitmap)) { // Get the bitmap graphics
      BitBlt(gBmp.GetHdc(), 0, 0, this.Width, this.Height, gScr.GetHdc(), this.Left, this.Top, SRCCOPY); // Blit the image data
    }
  }
  bitmap.Save(fileName, ImageFormat.Png); //Saves the image
  return bitmap;
}

[Update]:

• If you want the image saved to a particular location, send the full path with the filename (i.e. \\Windows\Temp\screenShot.png).

• If you want to exclude the controls, reduce the this.Width, this.Height, this.Left and this.Right until you have the size that fits the region that works.

• Last, if you want the Bitmap to use in memory, simply save it and use it as necessary. Example:

  panel1.Image = ScreenCapture("image.png"); panel1.BringToFront();

Hope that helps.

来源：https://stackoverflow.com/questions/7817689/print-and-export-to-usb-file-format-xml-csv-excel-functionality-in-smart-devi