Getting Started with Blazor Numeric Textbox in Blazor WASM App
8 Jul 20266 minutes to read
This section briefly explains about how to include Blazor Numeric TextBox component in a Blazor WebAssembly App using Visual Studio, Visual Studio Code, and the .NET CLI.
Create a new Blazor WebAssembly App
Create a Blazor WebAssembly App using Visual Studio via Microsoft Templates or the Blazor Extension. For detailed instructions, refer to the Blazor WebAssembly App Getting Started documentation.
Run the following command to create a new Blazor WebAssembly App.
dotnet new blazorwasm -o BlazorApp
cd BlazorAppAlternatively, create a Blazor WebAssembly App using Visual Studio Code via Microsoft Templates, the Blazor Extension, or the C# Dev Kit extension.
Run the following command to create a new Blazor WebAssembly App.
dotnet new blazorwasm -o BlazorApp
cd BlazorAppInstall the required Blazor packages
Install Syncfusion.Blazor.Inputs and Syncfusion.Blazor.Themes NuGet packages. All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.
- Go to Tools → NuGet Package Manager → Manage NuGet Packages for Solution.
- Search the required NuGet packages (
Syncfusion.Blazor.InputsandSyncfusion.Blazor.Themes) and install them.
Alternatively, you can install the same packages using the Package Manager Console with the following commands.
Install-Package Syncfusion.Blazor.Inputs -Version 34.1.29
Install-Package Syncfusion.Blazor.Themes -Version 34.1.29Open the terminal and run the following commands.
dotnet add package Syncfusion.Blazor.Inputs -v 34.1.29
dotnet add package Syncfusion.Blazor.Themes -v 34.1.29Open the command prompt and run the following commands.
dotnet add package Syncfusion.Blazor.Inputs -v 34.1.29
dotnet add package Syncfusion.Blazor.Themes -v 34.1.29Add import namespaces
After the packages are installed, open the ~/_Imports.razor file and import the Syncfusion.Blazor and Syncfusion.Blazor.Inputs namespaces.
@using Syncfusion.Blazor
@using Syncfusion.Blazor.InputsRegister the Blazor service
Open the Program.cs file in Blazor WebAssembly App and register the Blazor service.
....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....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 ~wwwroot/index.html 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>Add Blazor Numeric Textbox component
Open a Razor file located in the ~/Pages/*.razor (for example, Home.razor) and add the Blazor Numeric Textbox component inside the razor file.
<SfNumericTextBox TValue="int?" Value=10></SfNumericTextBox>Run the application
Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. The Blazor Numeric Textbox component will render in your default web browser.
Open the terminal and run the following command.
dotnet runOpen the command prompt and run the following command.
dotnet run
NOTE
Range validation
Set the minimum and maximum range of values in the Numeric Textbox using the Min and Max properties, so the numeric value should be in the min and max range.
<SfNumericTextBox TValue="int?" Value=5 Max=100 Min=1 Step=5></SfNumericTextBox>
Formatting the value
Set the display format of the Numeric Textbox component using the Format property. The value is displayed in the specified format when the component is not focused.
<SfNumericTextBox TValue="int?" Value=10 Format="c2"></SfNumericTextBox>
Precision of numbers
Restrict the number of decimals to be entered in the Numeric Textbox by using the Decimals and ValidateDecimalOnType properties. So, you cannot enter the number whose precision is greater than the mentioned decimals.
If ValidateDecimalOnType is false, number of decimals will not be restricted. Else, number of decimals will be restricted while typing in the Numeric Textbox.
<SfNumericTextBox TValue="double?" Value=10 ValidateDecimalOnType=true Decimals=3 Format="n3" Placeholder="ValidateDecimalOnType enabled" FloatLabelType="@FloatLabelType.Auto"></SfNumericTextBox>
<SfNumericTextBox TValue="double?" Value=10 Decimals=3 Format="n3" Placeholder="ValidateDecimalOnType disabled" FloatLabelType="@FloatLabelType.Auto"></SfNumericTextBox>