Getting Started with ASP.NET Core DropDownButton Control

23 Jul 20263 minutes to read

This section briefly explains how to include the ASP.NET Core DropDownButton control in an ASP.NET Core application using Visual Studio.

Create an ASP.NET Core Web App with Razor Pages

Create an ASP.NET Core Web App using Visual Studio via Microsoft Templates or the Syncfusion® ASP.NET Core Extension. For detailed instructions, refer to the ASP.NET Core Web App Getting Started documentation.

Install the required ASP.NET Core packages

To add the ASP.NET Core DropDownButton control in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for and install the Syncfusion.AspNetCore.SplitButtons and Syncfusion.AspNetCore.Themes packages. All Syncfusion ASP.NET Core packages are available in nuget.org. See the NuGet packages topic for details.

Alternatively, you can install the same packages using the Package Manager Console with the following commands.

Install-Package Syncfusion.AspNetCore.SplitButtons -Version 34.1.29
Install-Package Syncfusion.AspNetCore.Themes -Version 34.1.29

Add the ASP.NET Core Tag Helpers

After the packages are installed, open the ~/Pages/_ViewImports.cshtml file and import the Syncfusion.AspNetCore.Base and Syncfusion.AspNetCore.SplitButtons Tag Helpers.

@addTagHelper *, Syncfusion.AspNetCore.Base
@addTagHelper *, Syncfusion.AspNetCore.SplitButtons

Add stylesheet and script resources

The theme stylesheet and script can be referenced from Static Web Assets. Include the stylesheet and script references inside the <head> of ~/Pages/Shared/_Layout.cshtml.

<head>
    ...
    <!-- Syncfusion ASP.NET Core controls styles -->
    <link rel="stylesheet" href="_content/Syncfusion.AspNetCore.Themes/styles/fluent2.css" />
    <!-- Syncfusion ASP.NET Core DropDownButton Control script -->
    <script src="_content/Syncfusion.AspNetCore.SplitButtons/scripts/sf-drop-down-button.min.js" type="text/javascript"></script>
</head>

Register the Script Manager

Open the ~/Pages/Shared/_Layout.cshtml file and register the script manager <ejs-scripts> at the end of the <body> element as follows.

<body>
    ...
    <!-- Syncfusion ASP.NET Core Script Manager -->
    <ejs-scripts></ejs-scripts>
</body>

Add ASP.NET Core DropDownButton control

Add the ASP.NET Core DropDownButton control in the ~/Pages/Index.cshtml file.

@{
    ...
    List<object> items = new List<object>();
    items.Add(new
    {
        text = "Cut"
    });
    items.Add(new
    {
        text = "Copy"
    });
    items.Add(new
    {
        text = "Paste"
    });
}
<ejs-dropdownbutton id="element" content="Edit" items="items"></ejs-dropdownbutton>

Run the application

Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. The ASP.NET Core DropDownButton will render in your default web browser.

ASP.NET Core DropDownButton Control

NOTE

View Sample in GitHub.

See also