1
在我的ASP MVC控制器中,我調用一個Web服務來處理一些信息。如果沒有錯誤信息返回,我希望能夠顯示成功消息,但也重置整個字段。從控制器返回null模型對象以查看以清除字段
我原本以爲要做到這一點的最好辦法是對錯誤信息使用String.IsNullOrWhiteSpace()
,如果該消息是空的,用new
語句刪除模型對象中的值,像這樣:
if (String.IsNullOrWhiteSpace(ViewBag.ErrorMessage))
{
agtPay = new AgentInformation();
}
return View(agtPay);
當我瀏覽Visual Studio中的代碼時,視圖中的字段看起來應該都是null
,但是當頁面加載之前的值仍然存在時。我認爲這有點做w /緩存我把下面的標籤放在視圖的頂部。
<meta http-equiv="PRAGMA" content="NO-CACHE">
下面是從視圖中的代碼W /縮寫switch
聲明:
[HttpPost]
public ActionResult AgentInformation(AgentInformation agtPay)
{
//redirect if security is not met.
if (!Security.IsAgent(User)) return RedirectToAction("Message", "Home", new { id = 1 });
try
{
//Run field validation and if anything found send back
string msg = AgentInformationValidator.ValidateFields(agtPay);
if (!String.IsNullOrWhiteSpace(msg))
{
ViewBag.ErrorMessage = msg;
return View(agtPay);
}
//If valid send agtPay to web service
AgentsClient webService = new AgentsClient();
ReturnMessage returnMessage = new ReturnMessage();
string userName = User.Identity.Name;
userName = userName.Substring(Math.Max(0, userName.Length - 6));
switch (agtPay.TransactionType)
{
case ("E"):
returnMessage = webService.EftUpdateByTaxid(true,
agtPay.RefNumType.ToString(),
agtPay.RefNumber,
agtPay.OwnerMasterAgentId,
agtPay.PaymentFrequency,
false,
agtPay.RoutingNumber,
agtPay.AccountType,
agtPay.AccountNumber,
REQUEST_SYSTEM,
userName);
break;
.
.
.
.
case ("U"):
returnMessage = webService.UnenrollEft(agtPay.RefNumType.ToString(),
agtPay.RefNumber,
agtPay.OwnerMasterAgentId,
REQUEST_SYSTEM,
userName);
break;
default:
ViewBag.ErrorMessage = "There was an error processing your request: No transaction type specified";
break;
}
if (returnMessage.Success)
{
string[] msgArray = returnMessage.FriendlyMsg.Split(';');
ViewBag.ReturnMessage = msgArray[0];
if (msgArray.Length > 0)
{
for (int i = 1; i < msgArray.Length; i++)
{
ViewBag.ErrorMessage += msgArray[i];
}
}
}
else
{
ViewBag.ErrorMessage = returnMessage.FriendlyMsg;
}
}
catch (Exception ex)
{
EventLog.WriteEntry("Monet", "From Agent Controller: \n\r|Ex Message| " + ex.Message + "\n\r|Stack Trace| " + ex.StackTrace);
ViewBag.ErrorMessage = "An error has occurred, IT has been notified and will resolve the issue shortly!";
SendEmail.ErrorMail(ex);
}
if (String.IsNullOrWhiteSpace(ViewBag.ErrorMessage))
{
agtPay = new AgentInformation();
}
return View(agtPay);
}
太棒了,謝謝。 – NealR