How to get result when the workflow is completed in Asp.net MVC application

Question

Hello all,

I want to get the result when the WF is successfully completed.

My workflow works well, it sends e-mail the employee and change record in data base but I can't see message in the view (page) saying "approved Successfully"?

This is a method in the controller to approve an Employee:

     [HttpPost]
        public ActionResult Approuve(int id)
        {
            using (DBModel db = new DBModel())
            {
                SqlConnection conString = new SqlConnection(db.Database.Connection.ConnectionString);
                Employee emp = db.Employees.Where(x => x.EmployeeID == id).FirstOrDefault<Employee>();
                int resultWF;
                resultWF=OrdreWF(true,"[e-mail]",emp.EmployeeID, "Outlook","","","WF ASP NET: Employee approuved","this email to test wf","","","", conString);
                
                if(resultWF==1)
                return Json(new { success = true, message = "approved Successfully" }, JsonRequestBehavior.AllowGet);
              
            }
        }

 public int OrdreWF(bool ordre, string email, int id, string smtptype, string from, string passwrd, string subject, string body, string idlancer, string idtache, string idress, SqlConnection stringConnection)
        {
            int result = 0;
            try
            {
               
                AutoResetEvent syncEvent = new AutoResetEvent(false);
                AutoResetEvent idleEvent = new AutoResetEvent(false);

                var inputs = new Dictionary<string, object>() { { "Approuver", ordre }, { "EmailTo", email }, { "id", id }, { "smtp_type", smtptype }, { "body_msg", body }, { "senderAddress", from }, { "Password", passwrd }, { "Subject_msg", subject }, { "IDlanceur", idlancer }, { "IDtache", idtache }, { "IDresTache", idress }, { "stringConnection", stringConnection } };
                //approved
                WorkflowApplication wfApp =
                    new WorkflowApplication(new TaskWF1(), inputs);//c'est le workflow 

                wfApp.Completed = delegate (WorkflowApplicationCompletedEventArgs evt)
                {

                    if (ordre)
                        result = 1;
                    else
                        result = 2;
         
                  
                    syncEvent.Set();
                };

                wfApp.Aborted = delegate (WorkflowApplicationAbortedEventArgs evt)
                {
                    //Cursor.Current = Cursors.Default;
                    Console.WriteLine(evt.Reason);
                    
                    syncEvent.Set();
                };

                wfApp.OnUnhandledException = delegate (WorkflowApplicationUnhandledExceptionEventArgs evt)
                {
                    //Cursor.Current = Cursors.Default;
                    Console.WriteLine(evt.UnhandledException.ToString());
                    return UnhandledExceptionAction.Terminate;
                };

                wfApp.Idle = delegate (WorkflowApplicationIdleEventArgs evt)
                {
                    //Cursor.Current = Cursors.Default;
                    idleEvent.Set();
                };

                wfApp.Run();
            }
            catch (Exception ex)
            {
                result = -1;
                
            }
            return result;
        }

    }

##### WF xaml#################

<Activity mc:Ignorable="sap sap2010 sads" x:Class="Workflow1Niveau.TaskWF1"
 xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities"
 xmlns:local="clr-namespace:WorkflowApplication1"
 xmlns:local1="clr-namespace:;assembly=ActivityLibrary"
 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 xmlns:mca="clr-namespace:Microsoft.CSharp.Activities;assembly=System.Activities"
 xmlns:sads="http://schemas.microsoft.com/netfx/2010/xaml/activities/debugger"
 xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation"
 xmlns:sap2010="http://schemas.microsoft.com/netfx/2010/xaml/activities/presentation"
 xmlns:scg="clr-namespace:System.Collections.Generic;assembly=mscorlib"
 xmlns:sco="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib"
 xmlns:sds="clr-namespace:System.Data.SqlClient;assembly=System.Data"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <x:Members>
    <x:Property Name="Approuver" Type="InArgument(x:Boolean)" />
    <x:Property Name="EmailTo" Type="InArgument(x:String)" />
    <x:Property Name="id" Type="InArgument(x:Int32)" />
    <x:Property Name="smtp_type" Type="InArgument(x:String)" />
    <x:Property Name="body_msg" Type="InArgument(x:String)" />
    <x:Property Name="senderAddress" Type="InArgument(x:String)" />
    <x:Property Name="Password" Type="InArgument(x:String)" />
    <x:Property Name="Subject_msg" Type="InArgument(x:String)" />
    <x:Property Name="IDlanceur" Type="InArgument(x:String)" />
    <x:Property Name="IDtache" Type="InArgument(x:String)" />
    <x:Property Name="IDresTache" Type="InArgument(x:String)" />
    <x:Property Name="stringConnection" Type="InArgument(sds:SqlConnection)" />
  </x:Members>
  <sap2010:ExpressionActivityEditor.ExpressionActivityEditor>C#</sap2010:ExpressionActivityEditor.ExpressionActivityEditor>
  <sap2010:WorkflowViewState.IdRef>Workflow1Niveau.TaskWF1_1</sap2010:WorkflowViewState.IdRef>
  <TextExpression.NamespacesForImplementation>
    <sco:Collection x:TypeArguments="x:String">
      <x:String>System</x:String>
      <x:String>System.Collections.Generic</x:String>
      <x:String>System.Data</x:String>
      <x:String>System.Linq</x:String>
      <x:String>System.Text</x:String>
      <x:String>System.Runtime.InteropServices</x:String>
      <x:String>ActivityLibrary</x:String>
      <x:String>System.Activities</x:String>
      <x:String>System.Runtime</x:String>
      <x:String>System.Collections.Concurrent</x:String>
      <x:String>Workflow1Niveau</x:String>
      <x:String>WorkflowApplication1</x:String>
      <x:String>System.Data.SqlClient</x:String>
    </sco:Collection>
  </TextExpression.NamespacesForImplementation>
  <TextExpression.ReferencesForImplementation>
    <sco:Collection x:TypeArguments="AssemblyReference">
      <AssemblyReference>Microsoft.CSharp</AssemblyReference>
      <AssemblyReference>PresentationCore</AssemblyReference>
      <AssemblyReference>PresentationFramework</AssemblyReference>
      <AssemblyReference>System</AssemblyReference>
      <AssemblyReference>System.Activities</AssemblyReference>
      <AssemblyReference>System.Activities.Presentation</AssemblyReference>
      <AssemblyReference>System.Core</AssemblyReference>
      <AssemblyReference>System.Data</AssemblyReference>
      <AssemblyReference>System.Runtime.Serialization</AssemblyReference>
      <AssemblyReference>System.ServiceModel</AssemblyReference>
      <AssemblyReference>System.ServiceModel.Activities</AssemblyReference>
      <AssemblyReference>System.Xaml</AssemblyReference>
      <AssemblyReference>System.Xml</AssemblyReference>
      <AssemblyReference>System.Xml.Linq</AssemblyReference>
      <AssemblyReference>WindowsBase</AssemblyReference>
      <AssemblyReference>ActivityLibrary</AssemblyReference>
      <AssemblyReference>mscorlib</AssemblyReference>
      <AssemblyReference>Workflow1Niveau</AssemblyReference>
    </sco:Collection>
  </TextExpression.ReferencesForImplementation>
  <Sequence sap2010:WorkflowViewState.IdRef="Sequence_2">
    <Sequence.Variables>
      <Variable x:TypeArguments="local:ApproveClass" Name="className">
        <Variable.Default>
          <mca:CSharpValue x:TypeArguments="local:ApproveClass">new WorkflowApplication1.ApproveClass()</mca:CSharpValue>
        </Variable.Default>
      </Variable>
    </Sequence.Variables>
    <Switch x:TypeArguments="x:Boolean" sap2010:WorkflowViewState.IdRef="Switch`1_1">
      <Switch.Expression>
        <InArgument x:TypeArguments="x:Boolean">
          <mca:CSharpValue x:TypeArguments="x:Boolean">Approuver</mca:CSharpValue>
        </InArgument>
      </Switch.Expression>
      <Sequence x:Key="True" sap2010:WorkflowViewState.IdRef="Sequence_1">
        <Sequence.Variables>
          <Variable x:TypeArguments="x:Int32" Name="id2" />
          <Variable x:TypeArguments="x:String" Name="variable1" />
        </Sequence.Variables>
        <WriteLine sap2010:WorkflowViewState.IdRef="WriteLine_1" Text="Employé approuvé" />
        <local1:SendEmailActivity result="{x:Null}" DisplayName="Send mail to the project manager" sap2010:WorkflowViewState.IdRef="SendEmailActivity_1" host="smtp.gmail.com">
          <local1:SendEmailActivity.SMTPType>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">smtp_type</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.SMTPType>
          <local1:SendEmailActivity.body>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">body_msg</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.body>
          <local1:SendEmailActivity.from>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">senderAddress</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.from>
          <local1:SendEmailActivity.password>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">Password</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.password>
          <local1:SendEmailActivity.subject>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">Subject_msg</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.subject>
          <local1:SendEmailActivity.to>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">EmailTo</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.to>
          <local1:SendEmailActivity.userName>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">senderAddress</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.userName>
        </local1:SendEmailActivity>
        <InvokeMethod DisplayName="Update employee aproved in DB" sap2010:WorkflowViewState.IdRef="InvokeMethod_1" MethodName="UpdateStateApproved">
          <InvokeMethod.TargetObject>
            <InArgument x:TypeArguments="local:ApproveClass">
              <mca:CSharpValue x:TypeArguments="local:ApproveClass">className</mca:CSharpValue>
            </InArgument>
          </InvokeMethod.TargetObject>
          <InArgument x:TypeArguments="x:Int32">
            <mca:CSharpValue x:TypeArguments="x:Int32">id</mca:CSharpValue>
          </InArgument>
          <InArgument x:TypeArguments="sds:SqlConnection">
            <mca:CSharpValue x:TypeArguments="sds:SqlConnection">stringConnection</mca:CSharpValue>
          </InArgument>
        </InvokeMethod>
      </Sequence>
      <Sequence x:Key="False" sap2010:WorkflowViewState.IdRef="Sequence_3">
        <Sequence.Variables>
          <Variable x:TypeArguments="x:Int32" Name="id2" />
          <Variable x:TypeArguments="x:String" Name="variable1" />
        </Sequence.Variables>
        <WriteLine sap2010:WorkflowViewState.IdRef="WriteLine_2" Text="Employé Refused" />
        <local1:SendEmailActivity result="{x:Null}" DisplayName="Envoyer email au chef de projet" sap2010:WorkflowViewState.IdRef="SendEmailActivity_2" host="smtp.gmail.com">
          <local1:SendEmailActivity.SMTPType>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">smtp_type</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.SMTPType>
          <local1:SendEmailActivity.body>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">body_msg</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.body>
          <local1:SendEmailActivity.from>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">senderAddress</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.from>
          <local1:SendEmailActivity.password>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">Password</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.password>
          <local1:SendEmailActivity.subject>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">Subject_msg</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.subject>
          <local1:SendEmailActivity.to>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">EmailTo</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.to>
          <local1:SendEmailActivity.userName>
            <InArgument x:TypeArguments="x:String">
              <mca:CSharpValue x:TypeArguments="x:String">senderAddress</mca:CSharpValue>
            </InArgument>
          </local1:SendEmailActivity.userName>
        </local1:SendEmailActivity>
        <InvokeMethod DisplayName="Update employee refused in DB" sap2010:WorkflowViewState.IdRef="InvokeMethod_3" MethodName="UpdateStateRejected">
          <InvokeMethod.TargetObject>
            <InArgument x:TypeArguments="local:ApproveClass">
              <mca:CSharpValue x:TypeArguments="local:ApproveClass">className</mca:CSharpValue>
            </InArgument>
          </InvokeMethod.TargetObject>
          <InArgument x:TypeArguments="x:Int32">
            <mca:CSharpValue x:TypeArguments="x:Int32">id</mca:CSharpValue>
          </InArgument>
          <InArgument x:TypeArguments="sds:SqlConnection">
            <mca:CSharpValue x:TypeArguments="sds:SqlConnection">stringConnection</mca:CSharpValue>
          </InArgument>
        </InvokeMethod>
      </Sequence>
    </Switch>
    
</Activity>