强制把图片拉伸?这样图片内容会变形。
可以按指定的分辨率修改图片大小
Dim bmpDest As New Bitmap(200, 200)
Dim bmpSrc As New Bitmap("D:\问题\1.png")
Dim g = Graphics.FromImage(bmpDest)
Dim rectDest As New System.Drawing.Rectangle(0, 0, 200, 200)
Dim rectSrc As New System.Drawing.Rectangle(0, 0, bmpSrc.Width, bmpSrc.Height)
g.DrawImage(bmpSrc, rectDest, rectSrc, GraphicsUnit.Pixel)
g.Dispose()
bmpDest.Save("D:\问题\2.png", bmpSrc.RawFormat)