Questions[ajax]

I have a registration form that works, that when executed successfully calls Limpiarthat makes the form blank, but if I put the the OnBeginform stops working completely

@using (Ajax.BeginForm("Registrar", "", new AjaxOptions
            {
                HttpMethod = "POST",              
                //OnBegin = "Iniciar",
                OnSuccess = "Limpiar",  
                UpdateTargetId = "div_tabla_sucursal",
                InsertionMode = InsertionMode.Replace
            }

In a script I have the following:

function Iniciar () {
    // Deshabilitamos el botón de Submit
    $("#btn_registrar").prop("disabled", true);
};

var Limpiar = function () {
    // Limpia el formulario
    $("#Frm_Registro").trigger("reset");
    // Habilitamos el botón de Submit
    $("#btn_registrar").prop("disabled", false);
    // Mostramos un mensaje de éxito.
    $("#ExitoAlert").show("slow").delay(2000).hide("slow");
};

the first time it was executed correctly and if it did not make any modifications it stopped executing, when I remove it onBeginfrom the form onSuccessit executes without problems, but when I place it it stops working completely.

I have a form on my web page in which I need that when a user enters a Code in an input in another input, the Name is auto-completed. I have the code shown below, but it does nothing. I have two tables: TablaCodigos: Codigo_p varchar ...

TablePersonas Codigo_p varchar Name varchar ...

my script

<script type="text/javascript">
$("#Codigo_p").change(function () {
$.getJSON("/Solicitud/GetPersona?Codigo_p=" + $("#Codigo_p").val(), function (result) 
{
            var select = $("#nombreP");
            select.empty();
            $.each(result, function (index, itemData) {
            select.append($({
            value: itemData.Nombre
            }));
        });
    });
 }
</script>

my controller

public JsonResult GetPersona(string Codigo_p)
{
  bd.Configuration.ProxyCreationEnabled = false;
  TablaPersonas nom_p = bd.TablaPersonas.Where(x => x.Codigo_p == Codigo_p).Single();
  return Json(nom_p, JsonRequestBehavior.AllowGet);
}             

HTML

<div class="form-group">
<div class="m-0 font-weight-bold text-primary subtitulo">Persona:</div>
<input type="text" class="form-control" id="nombreP" name="nombreP" placeholder="Nombre" readonly="" >
</div>

I wanted to force this function to be asynchronous, that's why I've given it to him, asyncbut awaithe, who was trying to put it in the return , won't let me.

Where should I put the await?

public async  loginU(usuario:string, password:string){
    return   this._http
    .get<Usuario>(this.URI+"/existU/"+usuario+"/"+password)
    .pipe(
      map(usuario=>{
        return    usuario;
      })
    )
  }

I was doing a test service and from my component when calling the service and wanting to add ".subscribe" it gave me an error that the method was not an observable...

Searching the internet, I managed to solve the problem if I added something like this to my service using .map:

loadAll() {
    return this.http.get(this.url)
        .map(res => res.json());            
}

When adding .map from the component if ".subscribe" worked fine for me.

What I don't understand is what that .map does, I googled but couldn't find any info.

According to what the visual studio code shows me (in English) it is something that takes a result and creates an observable... Could you please clarify what this .map does?

Thank you very much

I have a big problem with Ajax MVC and Visual Basic: When I create an object in javascript to do a POST in the Controller everything is fine because when I receive the Object in the ActionResult, all the attributes are Nulls.

Can someone help me?

Ajax Code:

    // #region Crear o Actualizar un Item
    function CreateUpdate() {
        var checkBanderas = true;
        var MyObject = {};
        var PasswordRepeat = null;
        // Id Name Description NameOrIP Enabled Default
        if ($('#hdUserId').val() == "") { MyObject.Id = 0; } else { MyObject.Id = $('#hdUserId').val(); }

        if ($('#txt_UserName').val() == "") { MyObject.UserName = null; } else { MyObject.UserName = $('#txt_UserName').val(); }
        if ($('#txt_Password').val() == "") { MyObject.Password = null; } else { MyObject.Password = $('#txt_Password').val(); }
        if ($('#txt_PasswordRepeat').val() == "") { PasswordRepeat == null; } else { PasswordRepeat = $('#txt_PasswordRepeat').val(); }
        if ($('#txt_FirstName').val() == "") { MyObject.FirstName = null; } else { MyObject.FirstName = $('#txt_FirstName').val(); }
        if ($('#txt_LastName').val() == "") { MyObject.LastName = null; } else { MyObject.LastName = $('#txt_LastName').val(); }
        if (MyObject.FirstName == null) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Ingresa el Nombre para poder continuar.", false, " $('#dlgCreateUpdate').modal('show'); FocusTextBox('#txt_FirstName');", null);
            return;
        }
        if (MyObject.LastName == null) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Ingresa el Apellido para poder continuar.", false, " $('#dlgCreateUpdate').modal('show'); FocusTextBox('#txt_LastName');", null);
            return;
        }
        if (MyObject.Password == null) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Ingresa la Contraseña para poder continuar.", false, " $('#dlgCreateUpdate').modal('show'); FocusTextBox('#txt_Password');", null);
            return;
        }
        if (PasswordRepeat == null) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Ingresa la Contraseña de Confirmación para poder continuar.", false, " $('#dlgCreateUpdate').modal('show'); FocusTextBox('#txt_PasswordRepeat');", null);
            return;
        }
        if (MyObject.Password != PasswordRepeat) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Las contraseñas no coinciden.", false, " $('#dlgCreateUpdate').modal('show'); CleanPasswords();", null);
            return;
        }
        if (MyObject.UserName == null) {
            $('#dlgCreateUpdate').modal('hide');
            ShowMessageBox("Error de Validación", "Ingresa el Nombre de Usuario para poder continuar.", false, " $('#dlgCreateUpdate').modal('show'); FocusTextBox('#txt_UserName');", null);
            return;
        }
        var data = MyObject;
        console.log("data: " + JSON.stringify(data));
        $.ajax(
                {
                    url: '/Users/CreateUpdate_Users'
                    , type: "POST"
                    , data: JSON.stringify(data)
                    , dataType: "json"
                    , contentType: 'application/json'
                })
                .done(function (result) {
                    if (result.success) {
                        ShowMessageBox("Guardado", "Los datos han sido guardados correctamente.", false, null, null);
                        DoSearch();
                        //oTable.DataTable();
                    }
                    else {
                        ShowMessageBox("Error", "A ocurrido un error al intentar guardar los datos. Contacte al Administrador del Sistema.", false, "$('#dlgCreateUpdate').modal('show');", null);
                    }
                    //HideLoading();
                })
                .fail(function (e) {
                    alert("Error: " + e.status + ": " + e.statusText, + "[" + e.Message + "]");
                    //HideLoading();
                });

        //ShowLoading();
        $('#dlgCreateUpdate').modal('hide');
    }
    // #endregion

controller code

    <HttpPost()>
    Function CreateUpdate_Users(MyObject As Entities.ApiUser) As ActionResult
        Dim Success As Boolean = True
        Dim Message As String = String.Empty
        Dim model As UserModels = New UserModels()
        Try
            Using logic As Logic = New Logic()
                Dim ToSave As Entities.ApiUser = New Entities.ApiUser()
                If (MyObject.Id > 0) Then
                    MyObject.Id = Nothing
                End If
                model.Item = logic.Save_Users(MyObject)
            End Using
        Catch ex As Exception
            Success = False
            Message = ex.Message
        End Try
        Dim c As Object = New With {.success = Success, .message = Message}
        Dim r As JsonResult = Json(c, JsonRequestBehavior.AllowGet)
        Return r
    End Function

End Class

Test Images:

Debugging: