// GET: VerifyCode
public ActionResult Index()
{
string strVerifyCode = RandomHelper.CreateCode(4);
SessionHelper.VerifyCode.SetSession(strVerifyCode);
return(File(IOHelper.GenerateValidateGraphic(strVerifyCode), "image/Jpeg"));
}
public async Task <string> GetShareCodeAsync()
{
DateTime dateTime = DateTime.Now;
string strShareCode = string.Empty;
while (string.IsNullOrEmpty(strShareCode) || await IsExistShareCodeAsync(strShareCode))
{
strShareCode = RandomHelper.CreateCode(8);
}
return(strShareCode);
}