限制图片上传大小

   protected void Button1_Click(object sender, EventArgs e)        {             if(File1.PostedFile.ContentType.ToUpper().IndexOf("IMAGE")>-1)   {    System.Drawing.Image img= System.Drawing.Image.FromStream(File1.PostedFile.InputStream);    int Width = img.Width;    int Height = img.Height;    if(Width>60 || Height>60 || File1.PostedFile.ContentLength>1024*1024*2)    {     Response.Write("不符:Width="+Width.ToString() +"<br>Height="+Height.ToString()+"<br>Size="+(this.File1.PostedFile.ContentLength/1024).ToString("##,##0.00")+"K");    }    else    {     string sPath =Server.MapPath(System.DateTime.Now.ToString("yyy-MM-dd hh-mm-ss")+Session.SessionID+".jpg");     this.File1.PostedFile.SaveAs(sPath);     Response.Write("上传成功");    }   }   else   {    Response.Write("请选择图片文件!");   }  }

转载于:https://www.cnblogs.com/qzc900809/archive/2013/01/10/2855533.html