ShowIfTagHelper Class

Namespace: Meziantou.AspNetCore.Mvc.TagHelpers
Assembly: Meziantou.AspNetCore.Mvc.dll
Package: Meziantou.AspNetCore.Mvc 3.0.3
Source: ShowIfTagHelper.cs
Available in package assets: net10.0net11.0

A TagHelper that conditionally renders elements based on a boolean expression.

public sealed class ShowIfTagHelper : TagHelper

Example

@model FormModel

@* Show content only if user is authenticated *@
<div show-if="@(User.Identity?.IsAuthenticated == true)">
    Welcome back, @User.Identity?.Name!
</div>

@* Show error message conditionally *@
<div class="alert alert-danger" show-if="@Model.HasErrors">
    Please correct the errors below.
</div>

Inheritance: TagHelper ShowIfTagHelper

Constructors

Name	Description
ShowIfTagHelper()

ShowIfTagHelper()

public ShowIfTagHelper()

No documentation is available.

Properties

Name	Description
Value	Gets or sets the condition that determines whether the element should be rendered.

Value

ShowIfTagHelper.cs

Gets or sets the condition that determines whether the element should be rendered.

public bool Value { get; set; }

Property value

bool When true, the element is rendered; when false, it is suppressed.

Methods

Name	Description
Process(TagHelperContext, TagHelperOutput)	Processes the tag helper by either rendering or suppressing the element based on the condition.

Process(TagHelperContext, TagHelperOutput)

ShowIfTagHelper.cs

Processes the tag helper by either rendering or suppressing the element based on the condition.

public override void Process(TagHelperContext context, TagHelperOutput output)

Parameters

context TagHelperContext: Contains information about the current tag.
output TagHelperOutput: A stateful HTML element used to generate an HTML tag.