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1、WORD（可编辑版本）.net 上传图片进行缩放 本文中来源于网络，仅供参考/ summary/ 上传图片进行缩放/ /summary/ param name=fileName图片肯定地址/param/ param name=destWidth指定宽度/param/ param name=destHeight指定高度/param/ param name=type1-固定缩放；2-按比例缩放；3-指定宽度,宽度大于指定宽度按指定宽度进行等比缩放，小于指定宽度按原图大小上传；4-原图直接上传/parampublic void ReducesPic(string fileName, int dest
2、Width, int destHeight, int type) if (!fileName.Equals() /图片打算路径 string Allpath = fileName; /生成原图 System.IO.Stream stream = System.IO.File.OpenRead(Allpath); System.Drawing.Image oImage = System.Drawing.Image.FromStream(stream); stream.Close(); stream.Dispose(); System.Drawing.Image.GetThumbnailImage
3、Abort callb = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback); string fileType = fileName.Substring(fileName.LastIndexOf(.) + 1); int oWidth = oImage.Width; int oHeight = oImage.Height; int tWidth = destWidth; /设置缩略图初始宽度 int tHeight = destHeight; /设置缩略图初始高度 /按指定宽高缩放 if (type = 1)
4、tWidth = destWidth; tHeight = destHeight; /按比例计算出缩略图的宽度和高度 else if (type = 2) if (oWidth tWidth | oHeight tHeight) if (oWidth = oHeight) tHeight = (int)Math.Floor(Convert.ToDouble(oHeight) * (Convert.ToDouble(tWidth) / Convert.ToDouble(oWidth); else tWidth = (int)Math.Floor(Convert.ToDouble(oWidth)
5、* (Convert.ToDouble(tHeight) / Convert.ToDouble(oHeight); else tWidth = oWidth; /原图宽度 tHeight = oHeight; /原图高度 /指定宽度,宽度大于指定宽度按指定宽度进行等比缩放，小于指定宽度按原图大小上传 else if (type = 3) if (oWidth = tWidth) if (oWidth = oHeight) tHeight = (int)Math.Floor(Convert.ToDouble(oHeight) * (Convert.ToDouble(tWidth) / Conve
6、rt.ToDouble(oWidth); else tWidth = (int)Math.Floor(Convert.ToDouble(oWidth) * (Convert.ToDouble(tHeight) / Convert.ToDouble(oHeight); else tWidth = oWidth; /原图宽度 tHeight = oHeight; /原图高度 else tWidth = oWidth; /原图宽度 tHeight = oHeight; /原图高度 /生成缩略原图 oImage = oImage.GetThumbnailImage(tWidth, tHeight, callb, IntPtr.Zero); oImage.Save(Allpath); public static bool ThumbnailCallback() return false; 3
