Getting started with Blazor Pager Component in Blazor Web App

14 Apr 202612 minutes to read

The Syncfusion^® Syncfusion^® Blazor Pager component enables navigation through large collections by dividing content into multiple pages. This guide details the integration of the Pager component in a Blazor Web App using Visual Studio, Visual Studio Code, and the .NET CLI.

• Visual Studio
• Visual Studio Code
• .NET CLI

Prerequisites

• System requirements for Blazor components

Create a new Blazor Web App in Visual Studio

Create a Blazor Web App using Visual Studio via Microsoft Templates or the Syncfusion^® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.

Prerequisites

• System requirements for Blazor components

Create a new Blazor Web App in Visual Studio Code

Create a Blazor Web App using Visual Studio Code via Microsoft Templates or the Syncfusion^® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.

For example, in a Blazor Web App with the Auto interactive render mode, use the following commands in the integrated terminal (Ctrl+`):

Blazor Web App

dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.Client

Prerequisites

Install the latest version of .NET SDK. If you previously installed the SDK, determine the installed version by executing the following command in a command prompt (Windows) or terminal (macOS) or command shell (Linux).

.NET CLI

dotnet --version

Create a Blazor Web App using .NET CLI

Run the following command to create a new Blazor Web App in a command prompt (Windows) or terminal (macOS) or command shell (Linux). For detailed instructions, refer to the Blazor Web App Getting Started documentation.

For example, in a Blazor Web App with the Auto interactive render mode, use the following commands:

Blazor Web App

dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.Client

NOTE

Configure the appropriate Interactive render mode and Interactivity location while creating a Blazor Web App. For detailed information, refer to the interactive render mode documentation.

Install Syncfusion^® Blazor packages

Install Syncfusion.Blazor.Navigations and Syncfusion.Blazor.Themes NuGet packages in your project using the NuGet Package Manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), or the integrated terminal in Visual Studio Code (dotnet add package), or the .NET CLI.

Alternatively, run the following commands in the Package Manager Console to achieve the same.

Package Manager

Install-Package Syncfusion.Blazor.Navigations -Version 33.1.44
Install-Package Syncfusion.Blazor.Themes -Version 33.1.44

If using the WebAssembly or Auto render modes in the Blazor Web App, install these packages in the client project.

NOTE

All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.

Add import namespaces

After the packages are installed, open the ~/_Imports.razor file in the client project and import the Syncfusion.Blazor and Syncfusion.Blazor.Navigations namespaces.

~/_Imports.razor

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Navigations

Register Syncfusion^® Blazor service

Register the Syncfusion Blazor service in the Program.cs file of your Blazor Web App.

Program.cs

....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....

NOTE

If the Interactive Render Mode is set to WebAssembly or Auto, register the Syncfusion^® Blazor service in Program.cs files of both the server and client projects in your Blazor Web App.

Add stylesheet and script resources

The theme stylesheet and script can be accessed from NuGet through Static Web Assets. Include the stylesheet and script references in the ~/Components/App.razor file.

<link href="_content/Syncfusion.Blazor.Themes/fluent2.css" rel="stylesheet" />
....
<script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>

NOTE

Check out the Blazor Themes topic to discover various methods (Static Web Assets, CDN, and CRG) for referencing themes in your Blazor application. Also, check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.

Add Syncfusion^® Blazor Pager component

Add the Syncfusion Blazor Pager component in the ~/Components/Pages/*.razor file. If the interactivity location is set to Per page/component in the Web App, define a render mode at the top of the ~/Pages/*.razor file. (For example, InteractiveServer, InteractiveWebAssembly or InteractiveAuto).

NOTE

If the Interactivity Location is set to Global with Auto or WebAssembly, the render mode is automatically configured in the App.razor file by default.

RAZOR

@* desired render mode define here *@
@rendermode InteractiveAuto

The Syncfusion Blazor Pager component can be integrated with other components to enable page navigation for large data collections. This configuration shows how to use the Pager with the ListView component.

1. Add ListView Component

Add the Blazor ListView component in the ~/Pages/*.razor file and bind it to a collection:

Home.razor

@using Syncfusion.Blazor.Navigations
@using Syncfusion.Blazor.Lists

<SfListView DataSource="@ListData" TValue="DataModel">
        <ListViewFieldSettings TValue="DataModel" Id="Id" Text="Name"></ListViewFieldSettings>
</SfListView>

@code {
    List<DataModel> ListData = new List<DataModel>();
    protected override void OnInitialized()
    {
        base.OnInitialized();
        ListData.Add(new DataModel { Name = "Nancy, Berlin, France" });
        ListData.Add(new DataModel { Name = "Andrew, Madrid, Germany" });
        ListData.Add(new DataModel { Name = "Janet, London, Brazil" });
        ListData.Add(new DataModel { Name = "Margaret, Marseille, Belgium" });
        ListData.Add(new DataModel { Name = "Steven, Cholchester, Switzerland" });
        ListData.Add(new DataModel { Name = "Laura , Tsawassen, Venezuela" });
        ListData.Add(new DataModel { Name = "Robert, Tacoma, Austria" });
        ListData.Add(new DataModel { Name = "Michael, Redmond, Mexico" });
        ListData.Add(new DataModel { Name = "Albert, Kirkland, USA" });
        ListData.Add(new DataModel { Name = "Nolan, London, Sweden" });
        ListData.Add(new DataModel { Name = "Jennifer, Berlin, Finland" });
        ListData.Add(new DataModel { Name = "Carter, Madrid, Italy" });
        ListData.Add(new DataModel { Name = "Allison, Marseille, Spain" });
        ListData.Add(new DataModel { Name = "John, Tsawassen, UK" });
        ListData.Add(new DataModel { Name = "Susan, Redmond, Ireland" });
        ListData.Add(new DataModel { Name = "Lydia, Cholchester, Portugal" });
        ListData.Add(new DataModel { Name = "Kelsey, London, Canada" });
        ListData.Add(new DataModel { Name = "Jessica, Kirkland, Denmark" });
        ListData.Add(new DataModel { Name = "Robert, Berlin, Austria" });
        ListData.Add(new DataModel { Name = "Shelley, Tacoma, Poland" });
        ListData.Add(new DataModel { Name = "Vanjack, Tsawassen, Norway" });
        ListData.Add(new DataModel { Name = "shelley, Cholchester, Argentina" });
        ListData.Add(new DataModel { Name = "Lydia, Kirkland, Finland" });
        ListData.Add(new DataModel { Name = "Jessica, Madrid, Sweden" });
        ListData.Add(new DataModel { Name = "Nolan, London, UK" });
        ListData.Add(new DataModel { Name = "Jennifer, Redmond, Italy" });
    }
    public class DataModel
    {
        public string Name { get; set; }
        public string Id { get; set; }
    }
}

2. Add Pager component

Add the Pager component in the same file (Pages/Index.razor) below the ListView. Configure the essential properties:

• PageSize – defines the number of items displayed per page.
• NumericItemsCount – specifies the count of numeric pager buttons.
• TotalItemsCount – indicates the total number of records in the data source.

Home.razor

@using Syncfusion.Blazor.Navigations

<SfPager PageSize="5" NumericItemsCount="4" TotalItemsCount="25"></SfPager>

For additional properties of Pager, refer to the API Reference.

3. Integrate ListView with Pager

To enable paging functionality, bind the ListView data for the current page by applying Skip and Take operations on the collection. These operations are based on the PageSize property of the Pager component.

The ItemClick event is triggered when a pager item is clicked. This event updates the Skip and Take values dynamically according to the selected page, ensuring that the correct subset of data is displayed in the ListView.

Home.razor

@using Syncfusion.Blazor.Data
@using Syncfusion.Blazor.Navigations
@using Syncfusion.Blazor.Lists

<div class="col-lg-12 control-section sb-property-border">
 @{
    var listData = ListData.Skip(SkipValue).Take(TakeValue).ToList();
    <SfListView @ref="@List" DataSource="@listData" TValue="DataModel" HeaderTitle="Contacts" ShowHeader="true">
        <ListViewFieldSettings TValue="DataModel" Id="Id" Text="Name"></ListViewFieldSettings>
    </SfListView>
}
    <SfPager @ref="@Page" PageSize=5 NumericItemsCount=4 TotalItemsCount=25 ItemClick="Click">
    </SfPager>
</div>
@code {
    SfPager Page;
    public SfListView<DataModel> List { get; set; }
    public int SkipValue;
    public int TakeValue = 5;
    List<DataModel> ListData = new List<DataModel>();
    protected override void OnInitialized()
    {
        base.OnInitialized();
        ListData.Add(new DataModel { Name = "Nancy, Berlin, France" });
        ListData.Add(new DataModel { Name = "Andrew, Madrid, Germany" });
        ListData.Add(new DataModel { Name = "Janet, London, Brazil" });
        ListData.Add(new DataModel { Name = "Margaret, Marseille, Belgium" });
        ListData.Add(new DataModel { Name = "Steven, Cholchester, Switzerland" });
        ListData.Add(new DataModel { Name = "Laura , Tsawassen, Venezuela" });
        ListData.Add(new DataModel { Name = "Robert, Tacoma, Austria" });
        ListData.Add(new DataModel { Name = "Michael, Redmond, Mexico" });
        ListData.Add(new DataModel { Name = "Albert, Kirkland, USA" });
        ListData.Add(new DataModel { Name = "Nolan, London, Sweden" });
        ListData.Add(new DataModel { Name = "Jennifer, Berlin, Finland" });
        ListData.Add(new DataModel { Name = "Carter, Madrid, Italy" });
        ListData.Add(new DataModel { Name = "Allison, Marseille, Spain" });
        ListData.Add(new DataModel { Name = "John, Tsawassen, UK" });
        ListData.Add(new DataModel { Name = "Susan, Redmond, Ireland" });
        ListData.Add(new DataModel { Name = "Lydia, Cholchester, Portugal" });
        ListData.Add(new DataModel { Name = "Kelsey, London, Canada" });
        ListData.Add(new DataModel { Name = "Jessica, Kirkland, Denmark" });
        ListData.Add(new DataModel { Name = "Robert, Berlin, Austria" });
        ListData.Add(new DataModel { Name = "Shelley, Tacoma, Poland" });
        ListData.Add(new DataModel { Name = "Vanjack, Tsawassen, Norway" });
        ListData.Add(new DataModel { Name = "shelley, Cholchester, Argentina" });
        ListData.Add(new DataModel { Name = "Lydia, Kirkland, Finland" });
        ListData.Add(new DataModel { Name = "Jessica, Madrid, Sweden" });
        ListData.Add(new DataModel { Name = "Nolan, London, UK" });
        ListData.Add(new DataModel { Name = "Jennifer, Redmond, Italy" });
    }
    public void Click(PagerItemClickEventArgs args)
    {
        SkipValue = (args.CurrentPage * Page.PageSize) - Page.PageSize;
        TakeValue = Page.PageSize;
    }
    public class DataModel
    {
        public string Name { get; set; }
        public string Id { get; set; }
    }
}

4. Run the Application

Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. The Pager component will render and enable navigation through the collection.

NOTE

View Sample on GitHub.