Combobox multiple columns

[Vanderlei]

Hi,

Using EJ2, VS2017, MVC5...

How to prevent null field values to show like bellow? Couldn't it be shown like an empty space?

I used this code to render it:

Thanks!

[Prince Oliver]

Hi Vanderlei, 

Thank you for contacting Syncfusion support. 

 

We can use conditional statements in the itemTemplate tot prevent the “null” from being displayed. Kindly refer to the following code snippet. 

 

@Html.EJS().ComboBox("demandaid").DataSource((IEnumerable<object>)ViewBag.data).PopupHeight("500px") 

.Placeholder("Equipemento/item").FloatLabelType(Syncfusion.EJ2.Inputs.FloatLabelType.Always).PopupHeight("270px").Fields(new ComboBoxFieldSettings { Text = "descricao", Value="demandaid" }).ItemTemplate("<span><span class='colunacombobox'>${numdemanda}</span><span class='colunacombobox2'>${descricao}<span class='colunacombobox2'>${marca}</span><span class='colunacombobox2'>${modelo}</span><span class='colunacombobox2'>${numserie}</span>${if(tag)}<span class='colunacombobox2'>${tag}</span>${/if}</span>").Render() 

We have attached a sample for your reference, please find the sample at the following location: http://www.syncfusion.com/downloads/support/forum/141899/ze/MVCSAM~1-1249081287 

Please let us know if you need any further assistance on this. 

Regards, 

Prince 

[Vanderlei]

Hi,

Many thanks, it is working...

By the way, isn't there a better way to build the Combobox.ItemTemplate template?

Thank you!

[Prince Oliver]

Hi Vanderlei, 

Most Welcome. In Template data manipulation when large amount of data is set into ComboBox , we need to check all the data and the entire key value pair using loops and iteration to check whether the data is null or undefined and then set it to the element. So, this will affect the performance. In the provided solution, we have directly used condition to check the value in template itself. Avoiding loops which costs performance, so the suggested method is the better way. Please Let us know if you are facing any issues in this.  

Regards, 

Prince 

[Guadalupe]

Hello

We can view to me a example in asp.net webforms with this?

[Prince Oliver]

Hello Vanderlei, 

Good day to you. 

Yes, we have attached an example in ASP.NET WebForms. Please find the sample at the following location: http://www.syncfusion.com/downloads/support/forum/141899/ze/SyncfusionASPNETApplication3448692343  

Since, we have not provided support for webforms platform in EJ2. We have achieved your requirement by rendering the JavaScript component in webform platform. Kindly refer to the following code snippet. 

<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server"> 

    <div class="container" style="margin:20px;"> 

        <input type="text" id="combobox"> 

    </div> 

    <script> 

        var datasource = [{ demandaid: "1", descricao: "Cardioversor", numdemanda: "00003-3", marca: "Philips", modelo: "Cardio", numserie: "5489", tag: "668" }, 

        { demandaid : "2", descricao : "Incubadora", numdemanda : "00005-3", marca : "Siemens", modelo : "AA220", numserie : "162A" }]; 

 

        var comboboxObj = new ej.dropdowns.ComboBox({ 

            placeholder: 'Equipemento/item', 

            dataSource: datasource, 

            itemTemplate: "<span><span class='colunacombobox'>${numdemanda}</span><span class='colunacombobox2'>${descricao}<span class='colunacombobox2'>${marca}</span><span class='colunacombobox2'>${modelo}</span><span class='colunacombobox2'>${numserie}</span>${if(tag)}<span class='colunacombobox2'>${tag}</span>${/if}</span>", 

            fields: { text: 'descricao', value: 'demandaid' }, 

        }); 

        comboboxObj.appendTo('#combobox'); 

    </script> 

    <style> 

        .colunacombobox, 

        .colunacombobox2 { 

            padding: 6px; 

        } 

    </style> 

</asp:Content> 

Let us know if you need any further assistance on this.  

Regards, 

Prince