//************************************************************//
//下面給出三個簡單的方法，後面兩個方法是擴展，估計有時用得著
//************************************************************//
/// <summary>
/// 縮小圖片
/// </summary>
/// <param name="strOldPic">源圖文件名(包括路徑)</param>
/// <param name="strNewPic">縮小後保存為文件名(包括路徑)</param>
/// <param name="intWidth">縮小至寬度</param>
/// <param name="intHeight">縮小至高度</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>
/// 按比例縮小圖片，自動計算高度
/// </summary>
/// <param name="strOldPic">源圖文件名(包括路徑)</param>
/// <param name="strNewPic">縮小後保存為文件名(包括路徑)</param>
/// <param name="intWidth">縮小至寬度</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>
/// 按比例縮小圖片，自動計算寬度
/// </summary>
/// <param name="strOldPic">源圖文件名(包括路徑)</param>
/// <param name="strNewPic">縮小後保存為文件名(包括路徑)</param>
/// <param name="intHeight">縮小至高度</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;
}
}
