摘要：
View Code 1 string sFileName = Path.GetFileNameWithoutExtension(this.FileUpload1.FileName); 2 string sExtension = Path.GetExtension(FileUpload1.FileName); 3 double size = FileUpload1.PostedFile.ContentLength / 1024; 4 if (size < 60) 5 { 6 string fi = Server.MapPath(@"img/") + sFileName 阅读全文
摘要：
后台代码 1 protected void Page_Load(object sender, EventArgs e) 2 { 3 Bitmap bitmap = CreateBitmap(GetRandomDigit(2)+GetRandomNumbers(2)); 4 bitmap.Save(Response.OutputStream, ImageFormat.Jpeg); 5 bitmap.Dispose(); 6 } 7 #region 数字验证 8 public string GetRandomDigit(int len) 9 {10 string str = "12345 阅读全文