c# - How to pass a parameter to razor component in server-side Blazor?

C# - How to pass a parameter to razor component in server-side Blazor?

In server-side Blazor, you can pass parameters to a Razor component using attributes. Here's how you can do it:

  1. Define Parameters in the Component: Declare parameters using [Parameter] attribute in your Razor component.

  2. Pass Parameters in Parent Component: Pass values to these parameters when including the component in another Razor component or page.

Here's a step-by-step guide:

1. Define Parameters in the Component:

In your Razor component (.razor file), define parameters using the [Parameter] attribute.

<!-- MyComponent.razor --> @code { [Parameter] public string MyParameter { get; set; } } <div> <p>Parameter Value: @MyParameter</p> </div>

2. Pass Parameters in Parent Component:

In the parent component or page where you use MyComponent, specify the value for the MyParameter attribute.

<!-- ParentComponent.razor --> @page "/parent" <MyComponent MyParameter="Hello World" />

In this example, "Hello World" is passed as the value for the MyParameter attribute.

Using Complex Objects:

You can also pass complex objects as parameters by using the same approach. Here's an example:

// MyData.cs public class MyData { public string Name { get; set; } public int Age { get; set; } } 
<!-- MyComponent.razor --> @code { [Parameter] public MyData Data { get; set; } } <div> <p>Name: @Data.Name</p> <p>Age: @Data.Age</p> </div> 
<!-- ParentComponent.razor --> @page "/parent" <MyComponent Data="myData" /> @code { MyData myData = new MyData { Name = "John", Age = 30 }; }

In this example, myData is an instance of MyData class, and it is passed as a parameter to MyComponent.

By following these steps, you can pass parameters to a Razor component in server-side Blazor.

Examples

  1. How to pass parameters to a Razor component in server-side Blazor? Description: Understand the process of passing parameters to a Razor component in server-side Blazor to enable dynamic behavior.

    // Parent component <MyComponent MyParameter="parameterValue" /> // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  2. C# server-side Blazor pass parameter to component Description: Instructions for passing parameters to a server-side Blazor component using C# code for enhanced interactivity.

    // Parent component <MyComponent MyParameter="@parameterValue" /> // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  3. How to dynamically set parameters in server-side Blazor Razor component? Description: Learn how to dynamically set parameters in a server-side Blazor Razor component to achieve flexible component behavior.

    // Parent component <MyComponent @attributes /> // MyComponent.razor @code { [Parameter(CaptureUnmatchedValues = true)] public Dictionary<string, object> AdditionalAttributes { get; set; } }

  4. Passing parameters to Blazor Razor component from parent Description: Steps for passing parameters from a parent component to a Blazor Razor component to customize its behavior.

    // Parent component <MyComponent MyParameter="parameterValue" /> // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  5. C# Blazor server-side pass multiple parameters to component Description: Techniques for passing multiple parameters to a Blazor server-side component using C# for versatile component functionality.

    // Parent component <MyComponent MyParameter1="@parameter1" MyParameter2="@parameter2" /> // MyComponent.razor @code { [Parameter] public string MyParameter1 { get; set; } [Parameter] public string MyParameter2 { get; set; } }

  6. How to pass complex objects as parameters to Blazor components? Description: Methods for passing complex objects as parameters to Blazor components for handling more structured data.

    // Parent component <MyComponent MyObject="@myObject" /> // MyComponent.razor @code { [Parameter] public MyObjectType MyObject { get; set; } }

  7. C# server-side Blazor pass parameter to child component Description: Instructions for passing parameters from a parent component to a child component in server-side Blazor using C#.

    // Parent component <MyParentComponent> <MyChildComponent MyParameter="@parameterValue" /> </MyParentComponent> // MyChildComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  8. How to bind parameters dynamically in server-side Blazor? Description: Guidelines for dynamically binding parameters to server-side Blazor components to achieve dynamic behavior.

    // Parent component <MyComponent @bind-MyParameter="parameterValue" /> // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  9. C# Blazor server-side pass parameter from page to component Description: Steps for passing parameters from a Blazor server-side page to a component for customized behavior using C#.

    // Page <MyComponent MyParameter="@parameterValue" /> // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } }

  10. How to handle parameter changes in server-side Blazor components? Description: Learn how to handle changes to parameters in server-side Blazor components for dynamic updates.

    // MyComponent.razor @code { [Parameter] public string MyParameter { get; set; } protected override void OnParametersSet() { // Handle parameter changes } }

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