//************************************************************// //下面给出三个简单的方法,后面两个方法是扩展,估计有时用得着 //************************************************************// /// <summary> /// 缩小图片 /// </summary> /// <param name="strOldPic">源图文件名(包括路径)</param> /// <param name="strNewPic">缩小后保存为文件名(包括路径)</param> /// <param name="intWidth">缩小至宽度</param> /// <param name="intHeight">缩小至高度</param> public void SmallPic(string strOldPic, string strNewPic, int intWidth, int intHeight) {
System.Drawing.Bitmap objPic,objNewPic; try { objPic = new System.Drawing.Bitmap(strOldPic); objNewPic=new System.Drawing.Bitmap(objPic,intWidth,intHeight); objNewPic.Save(strNewPic);
} catch(Exception exp){throw exp;} finally { objPic=null; objNewPic=null; } }
/// <summary> /// 按比例缩小图片,自动计算高度 /// </summary> /// <param name="strOldPic">源图文件名(包括路径)</param> /// <param name="strNewPic">缩小后保存为文件名(包括路径)</param> /// <param name="intWidth">缩小至宽度</param> public void SmallPic(string strOldPic, string strNewPic, int intWidth) {
System.Drawing.Bitmap objPic,objNewPic; try { objPic = new System.Drawing.Bitmap(strOldPic); int intHeight=(intWidth / objPic.Width) * objPic.Height; objNewPic=new System.Drawing.Bitmap(objPic,intWidth,intHeight); objNewPic.Save(strNewPic);
} catch(Exception exp){throw exp;} finally { objPic=null; objNewPic=null; } }
/// <summary> /// 按比例缩小图片,自动计算宽度 /// </summary> /// <param name="strOldPic">源图文件名(包括路径)</param> /// <param name="strNewPic">缩小后保存为文件名(包括路径)</param> /// <param name="intHeight">缩小至高度</param> public void SmallPic(string strOldPic, string strNewPic, int intHeight) {
System.Drawing.Bitmap objPic,objNewPic; try { objPic = new System.Drawing.Bitmap(strOldPic); int intWidth=(intHeight / objPic.Height) * objPic.Width; objNewPic=new System.Drawing.Bitmap(objPic,intWidth,intHeight); objNewPic.Save(strNewPic);
} catch(Exception exp){throw exp;} finally { objPic=null; objNewPic=null; } }
//************************************************************// //盛天 2004-11-5 //QQ:37878073(希望和大家一起来交流)

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