/// <summary> /// 输出验证码 /// </summary> public void Val() { System.IO.MemoryStream ms = new System.IO.MemoryStream(); VerifyCode verify = new VerifyCode(); string code = verify.CreateVerifyCode(); SessionHelper.Add("ValCode", code, 3); Session.Add("ValCode", code); Bitmap image = verify.CreateImageCode(code); image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); Response.ClearContent(); Response.ContentType = "image/gif"; Response.BinaryWrite(ms.GetBuffer()); ms.Close(); ms = null; image.Dispose(); image = null; }