Return error alert message doing validation in controller whose return type is partialviewresult.

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Hi There, can someone please help me, i want to return error alert message doing validation in controller whose return type is PartialViewResult.
Email = Applicant_Service.GetMainContactEmail(Applicant_id, Application_id);
if (Email !="")
{
---Email has value return me view otherwise return me error message.full code is below
return PartialView("../Application/ContactEmailbox");
}
else
{
return error message
}

View Code

$.ajax({
type: "GET",
url: "/CreateApplicationFromSearch/AddUserPartialView_Applicant",
contentType: "application/json; charset=utf-8",
data: { "Applicant_id": ApplicantId, "Application_id": ApplicationId, "CameFrom": "Applicant", contact_person_id: contact_person_id, OfficeHolder_id: OfficeHolder_id, AccountDetail_Id: AccountDetail_Id },
dataType: "html",
success: function (data) {
$('#dialog').html(data);
$('#dialog').dialog('open');
$(".ui-dialog-titlebar-close").hide();
},
error: function () {
alert("Errors arose.");
}
});
Controller code
[HttpGet]
[AllowAnonymous]
public PartialViewResult AddUserPartialView(int Applicant_id, int Application_id, string CameFrom)
{
Email SendEmail = new Email();
string Email = "";
Email = Applicant_Service.GetMainContactEmail(Applicant_id, Application_id);
@ViewBag.ContactEmail = Email;
@ViewBag.Applicant_id = Applicant_id;
@ViewBag.Application_id = Application_id;
@ViewBag.CameFrom = CameFrom;
return PartialView("../Application/ContactEmailbox");
}

What I have tried:

if (Email !="")
{
---Email has value return me view otherwise return me error message.full code is below
return PartialView("../Application/ContactEmailbox");
}
else
{
return error message
}

Posted 21-May-17 0:56am

Member 12697982

Updated 22-May-17 0:25am

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Ehsan Sajjad · Answer 1 · 2017-05-22T00:25:00

A quick solution can be to return the JsonResult back to the client side with a flag to and put condition to either alert error message or continue normally, which would be like:

C#

public ActionResult SaveDetailedInfo(Option[] Options)
{
    ActionResult actionResult = null;
    if (Email !="")
    {
       actionResult = Json(new 
                           {
                              status = "Success", 
                              message = PartialView("../Application/ContactEmailbox");
                          });

    }
    else
    {
        actionResult = Json(new 
                              { 
                                status = "Error", 
                                message = "Your Error Message here to show as alert" 
                           });
    }

    return actionResult;
}

Now in the ajax call success, you can check if it was success or error:

JavaScript

success: function (data) {
   if (data.status == "Success") {
                $('#dialog').html(data.message);
                $('#dialog').dialog('open');
                $(".ui-dialog-titlebar-close").hide();
            } else {
                alert(data.message);
            }
}

Hope it helps!