上传大小2张图片

Question

   protected void submit_Click(object sender, EventArgs e)
        {
            string Status = "";
            string bigimage = "";
            string smallimage = "";
            bool status;            if (fileUpload.HasFile)
            {
                // 设置上传目录全路径
                string path = "~/UploadFiles/images/";
                string uploadPath = Server.MapPath("~/UploadFiles/images/");
                //图片名称
                string imgName = DateTime.Now.ToString("yyyyMMddhhmmss");               
                string[] resArr = Tu_BLL.UploadImg(uploadPath, fileUpload, imgName,path);
                Status = resArr.GetValue(0).ToString();
                bigimage = resArr.GetValue(1).ToString();
                //smallimage = resArr.GetValue(1).ToString();
            }
            if (fileUpload1.HasFile)
            {
                // 设置上传目录全路径
                string path = "~/UploadFiles/images/";
                string uploadPath = Server.MapPath("~/UploadFiles/images/");
                //图片名称
                string imgName = DateTime.Now.ToString("yyyyMMddhh");
                string[] resArr = Tu_BLL.UploadImg(uploadPath, fileUpload, imgName, path);
                Status = resArr.GetValue(0).ToString();
                //bigimage = resArr.GetValue(1).ToString();
                smallimage = resArr.GetValue(1).ToString();
            }
            if (Request["id"] != "0")
            {
                string oldimageSourceA = Server.MapPath(Tu_BLL.imageSelectForID(int.Parse(Request["id"]))[0].bigimage);
                string oldimageSourceB = Server.MapPath(Tu_BLL.imageSelectForID(int.Parse(Request["id"]))[0].smallimage);
                if (bigimage == "")
                {
                    bigimage = Tu_BLL.imageSelectForID(int.Parse(Request["id"]))[0].bigimage;
                    
                }
                if (smallimage == "")
                {
                   
                    smallimage = Tu_BLL.imageSelectForID(int.Parse(Request["id"]))[0].smallimage;
                }
                else
                {
                    Tu_BLL.DeleteFile(oldimageSourceA);
                    Tu_BLL.DeleteFile(oldimageSourceB);
                }
                status = Tu_BLL.UpdateImg(bigimage, smallimage, title.Text, int.Parse(Request["id"]));
            }
            else
            {
                status = Tu_BLL.ImageListInsertB(int.Parse(Request["uid"]), bigimage, smallimage, title.Text);
            }
            if (status) { Server.Transfer("page.aspx?uid=" + Request["uid"]); }
        }
    }
}

Answer 1

/// <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;
}
}