How to Get Variable from HTML Input in Blazor C
Blazor, a popular open-source web framework created by Microsoft, allows developers to build interactive web applications using C. One of the key features of Blazor is its ability to bind data to HTML inputs, making it easier to interact with user input. In this article, we will explore how to get a variable from an HTML input in Blazor C.
Firstly, let’s consider a simple example. Suppose we have a Blazor component with a text input field, and we want to retrieve the value entered by the user. To achieve this, we can use the `@bind` directive provided by Blazor. The `@bind` directive allows us to create a two-way binding between a C property and an HTML input element.
Here’s an example of a Blazor component that retrieves the value from a text input field:
“`csharp
@page “/input-binding”
@inject IJSRuntime JSRuntime
Input Binding Example
@code {
private string inputValue;
private async Task SubmitInput()
{
// Perform an action with the input value
Console.WriteLine($”Input value: {inputValue}”);
// Optionally, you can use JavaScript interop to perform additional actions
await JSRuntime.InvokeVoidAsync(“alert”, $”Input value: {inputValue}”);
}
}
“`
In the above example, we have a text input field with the `@bind` directive set to `inputValue`. This creates a two-way binding between the `inputValue` property and the input field. When the user types in the input field, the `inputValue` property is automatically updated with the entered value.
To retrieve the value of the input field, we can simply access the `inputValue` property in our C code. In the `SubmitInput` method, we print the value to the console and display an alert using JavaScript interop.
It’s important to note that the `@bind` directive can be used with various input types, such as `text`, `number`, `checkbox`, and more. Additionally, you can customize the binding behavior using event handlers and the `@bind` attribute’s additional parameters.
In summary, getting a variable from an HTML input in Blazor C is straightforward by using the `@bind` directive. This allows you to create a two-way binding between a C property and an HTML input element, making it easy to retrieve and manipulate user input in your Blazor applications.
