public?void?DrawImage( ????Image?image, ????Rectangle?destRect, ????Rectangle?srcRect, ????GraphicsUnit?srcUnit ) public?void?DrawImage( ????Image?image, ????int?x, ????int?y, ????Rectangle?srcRect, ????GraphicsUnit?srcUnit )

[c-sharp]?view plaincopy

#region???截取圖象??

??

?///???<summary>???

?///???從圖片中截取部分生成新圖???

?///???</summary>???

?///???<param???name=?"sFromFilePath?">?原始圖片?</param>???

?///???<param???name=?"saveFilePath?">?生成新圖?</param>???

?///???<param???name=?"width?">?截取圖片寬度?</param>???

?///???<param???name=?"height?">?截取圖片高度?</param>???

?///???<param???name=?"spaceX?">?截圖圖片X坐標(biāo)?</param>???

?///???<param???name=?"spaceY?">?截取圖片Y坐標(biāo)?</param>???

?public?static?void?CaptureImage(string?sFromFilePath,?string?saveFilePath,?int?width,?int?height,?int?spaceX,?int?spaceY)??

?{??

?????//載入底圖???

?????Image?fromImage?=?Image.FromFile(sFromFilePath);??

?????int?x?=?0;???//截取X坐標(biāo)???

?????int?y?=?0;???//截取Y坐標(biāo)???

?????//原圖寬與生成圖片寬???之差???????

?????//當(dāng)小于0(即原圖寬小于要生成的圖)時(shí)，新圖寬度為較小者???即原圖寬度???X坐標(biāo)則為0?????

?????//當(dāng)大于0(即原圖寬大于要生成的圖)時(shí)，新圖寬度為設(shè)置值???即width?????????X坐標(biāo)則為???sX與spaceX之間較小者???

?????//Y方向同理???

?????int?sX?=?fromImage.Width?-?width;??

?????int?sY?=?fromImage.Height?-?height;??

?????if?(sX?>?0)??

?????{??

?????????x?=?sX?>?spaceX???spaceX?:?sX;??

?????}??

?????else??

?????{??

?????????width?=?fromImage.Width;??

?????}??

?????if?(sY?>?0)??

?????{??

?????????y?=?sY?>?spaceY???spaceY?:?sY;??

?????}??

?????else??

?????{??

?????????height?=?fromImage.Height;??

?????}??

??

?????//創(chuàng)建新圖位圖???

?????Bitmap?bitmap?=?new?Bitmap(width,?height);??

?????//創(chuàng)建作圖區(qū)域???

?????Graphics?graphic?=?Graphics.FromImage(bitmap);??

?????//截取原圖相應(yīng)區(qū)域?qū)懭胱鲌D區(qū)???

?????graphic.DrawImage(fromImage,?0,?0,?new?Rectangle(x,?y,?width,?height),?GraphicsUnit.Pixel);??

?????//從作圖區(qū)生成新圖???

?????Image?saveImage?=?Image.FromHbitmap(bitmap.GetHbitmap());??

?????//保存圖象???

?????saveImage.Save(saveFilePath,?ImageFormat.Jpeg);??

?????//釋放資源???

?????saveImage.Dispose();??

?????bitmap.Dispose();??

?????graphic.Dispose();??

?}??

?#endregion??

?

//調(diào)用方法

???????? CaptureImage(@"D:/1.jpg", @"d:/2.jpg", 50, 50, 300, 300);

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