在Windows Mobile中调整图像大小 [英] Resize images in Windows Mobile

问题描述

是否有人知道在.net 2.0 紧凑型框架上调整图像大小的方法?

Is there anyone who knows a way to resize images on the .net 2.0 Compact Framework?

我希望能够从手机内存中获取用手机上的相机拍摄的图像，对其进行大小调整，然后将其上传到Web服务，因此我不需要将调整大小后的图像存储在磁盘上./p>

I want to be able to get images, taken with the camera on my phone, from the phones memory, resize them and then upload them to a webservice so I acctually don't need to store the resized images on disk.

推荐答案

这是我用来在.NET CF 2.0应用程序中调整图像大小的C#代码:

This is the C# code I use to resize images in my .NET CF 2.0 applications:

public static Image ResizePicture( Image image, Size maxSize )
{
  if( image == null )
    throw new ArgumentNullException( "image", "Null passed to ResizePictureToMaximum" );

  if( ( image.Width > maxSize.Width ) || ( image.Height > maxSize.Height ) )
  {
    Image resizedImage = new Bitmap( maxSize.Width, maxSize.Height );

    using( Graphics graphics = Graphics.FromImage( resizedImage ) )
    {
      graphics.Clear( Color.White );

      float widthRatio = maxSize.Width / image.Width;
      float heightRatio = maxSize.Height / image.Height;

      int width = maxSize.Width;
      int height = maxSize.Height;

      if( widthRatio > heightRatio )
      {
        width = ( int )Math.Ceiling( maxSize.Width * heightRatio );
      }
      else if( heightRatio > widthRatio )
      {
        height = ( int )Math.Ceiling( maxSize.Height * widthRatio );
      }

      graphics.DrawImage(
        image,
        new Rectangle( 0, 0, width, height ),
        new Rectangle( 0, 0, image.Width, image.Height ),
        GraphicsUnit.Pixel );
    }

    return resizedImage;
  }

  return image;
}

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