Tengo un problema. Cuando no busqué algo en el menú desplegable, tiene un valor seleccionado predeterminado = 0. Y está guardando mi base de datos. Si puede enviar valor "NULL" no se guardará en mi base de datos. ¿Cómo puedo enviar el valor predeterminado "NULL"?
<div class="form-group"> <label class="control-label col-md-2"></label> <div class="col-md-8"> @*@Html.DropDownList("CustomerID", null, new { @class = "form-control", required = "required", placeholder = "Müşteri Seçiniz" })*@ @Html.DropDownList("CustomerID", Enumerable.Empty<SelectListItem>(), "", new { @multiple = "multiple", @id = "CustomerID", @class = "form-control" }) @Html.ValidationMessageFor(model => model.CustomerID, "", new { @class = "text-danger", style="color:red"}) <p style="color:red;margin-bottom:-3px" id="errorpersonel"></p> </div> </div> <script language="javascript" type="text/javascript"> $(document).ready(function () { debugger; $("#CustomerID").pqSelect({ singlePlaceholder: '', width: '92%' }); $.ajax({ url: "/TicketDashboard/GetCustomer", method: "Post", contentType: "application/json; charset=utf-8", dataType: "json", success: function (data) { $("#CustomerID").empty(); $.each(data, function (index, value) { debugger; $('#CustomerID').append('<option value="' + value.CustomerID + '">' + value.CustomerName + '</option>'); }); $("#CustomerID").pqSelect("refreshData"); $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html('Boş geçilemez.'); } }); }); $("#CustomerID").pqSelect({ singlePlaceholder: '', multiplePlaceholder: 'Müşteri Seçiniz', maxSelect: 1, }).on("change", function (evt) { pccmail = $(this).val(); if (pccmail != "") { $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html(''); } else { $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html('Boş geçilemez'); } $('[id^=CCMailinput]').val(pccmail); });Son mis códigos. ¿Cómo puedo cambiar el valor seleccionado "0"? Debería ser "NULO" cuando envié el formulario
Puede elegir un valor nulo como se muestra a continuación si el valor seleccionado es 0.
pccmail = $(this).val()=="0"?null:(this).val(); <div class="form-group"> <label class="control-label col-md-2"></label> <div class="col-md-8"> @*@Html.DropDownList("CustomerID", null, new { @class = "form-control", required = "required", placeholder = "Müşteri Seçiniz" })*@ @Html.DropDownList("CustomerID", Enumerable.Empty<SelectListItem>(), "", new { @multiple = "multiple", @id = "CustomerID", @class = "form-control" }) @Html.ValidationMessageFor(model => model.CustomerID, "", new { @class = "text-danger", style="color:red"}) <p style="color:red;margin-bottom:-3px" id="errorpersonel"></p> </div> </div> <script language="javascript" type="text/javascript"> $(document).ready(function () { debugger; $("#CustomerID").pqSelect({ singlePlaceholder: '', width: '92%' }); $.ajax({ url: "/TicketDashboard/GetCustomer", method: "Post", contentType: "application/json; charset=utf-8", dataType: "json", success: function (data) { $("#CustomerID").empty(); $.each(data, function (index, value) { debugger; $('#CustomerID').append('<option value="' + value.CustomerID + '">' + value.CustomerName + '</option>'); }); $("#CustomerID").pqSelect("refreshData"); $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html('Boş geçilemez.'); } }); }); $("#CustomerID").pqSelect({ singlePlaceholder: '', multiplePlaceholder: 'Müşteri Seçiniz', maxSelect: 1, }).on("change", function (evt) { pccmail = $(this).val()=="0"?null:(this).val(); if (pccmail != "") { $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html(''); } else { $('span[data-valmsg-for="OpportunityAttachmentViewModel.CCMail"]').html('Boş geçilemez'); } $('[id^=CCMailinput]').val(pccmail); });