Title { get; set; } [Parameter] public RenderFragment? ChildContent { get; set; } [Parameter] public EventCallback<MouseEventArgs> OnClickCallback { get; set; } } 父组件将子元素 EventCallback<TValue> 的(OnClickCallback) 设置为其 ShowMessage 方法。
我们用一个input元素来让用户输入新的待办事项,placeholder的内容是提示语:输入新待办事项标题,它的值我们通过@bind来做,我们绑定AddTitle这个变量的值。 并且,我们通过添加一个名为新建的button元素来触发@onclick事件,这里让@onclick事件绑定AddToDoItem方法,这里留意,等添加完新项之后,我们清空下AddTitle的值,以便...
@page "/procedural-logic" @inject IAuthorizationService AuthorizationService Procedural Logic Example Do something important @code { [CascadingParameter] private Task<AuthenticationState>? authenticationState { get; set; } private async Task DoSomething() { if (authenticationState is not null) { var...
DynamicComponent有两个Parameter,一个是Type,表示的是要渲染的组件,另外一个是Parameters,表示渲染的组件的需要的参数。 此外,我们还可以通过DynamicComponent的Instance属性来直接访问被渲染的那个组件的实例: <DynamicComponentType="@typeof({COMPONENT})"@ref="dc"/>Refresh@code{privateDynamicComponent?dc;privateTas...
StateHasChanged 稍后将在 ASP.NET Core Razor 组件生命周期和ASP.NET Core Razor 组件呈现中详细介绍。 按钮的 @onclick 指令特性会将事件处理程序附加到按钮的 onclick 事件。 稍后在 ASP.NET Core Blazor 事件处理中更详细地介绍事件处理。Expanders.razor:...
Log username @_authMessage @code { [CascadingParameter] private Task<AuthenticationState> authenticationStateTask { get; set; } private string _authMessage; private async Task LogUsername() { var authState = await authenticationStateTask; var ...
@Greeting Click me @message @ChildContent @code { private string message = "Not updated yet."; [Parameter] public RenderFragment? ChildContent { get; set; } [Parameter] public string Greeting { get; set; } = "Hello!"; private void UpdateMessage() { message = "Somebody updated me!";...
[Parameter(CaptureUnmatchedValues = true)]publicIDictionary<string,object>AdditionalAttributes {get;set; }} Counter.razor Copy @page"/counter"CounterCurrent count:@currentCount<ButtonOnClick="IncrementCount">Click me</Button>@code {intcurrentCount =0;voidIncrementCount(){ currentCount++; }} Notice...
PR: Add Parameter to MatNavItem to allow user to set the NavLinkMatch #456 (Thanks to enkodellc) PR: Add Id and Attributes to MatSelect #454 (Thanks to hailstorm75) PR: MatIconButton - Added OnClickStopPropagation #462 (Thanks to RonPeters) PR: MatButton - Added OnClickStopPropagation ...
With the correct references and using statement for Microsoft.AspNetCore.Components.Web, event handlers like @onclick and @bind should be bold font and colorized as shown below when using Visual Studio. If @bind or @onclick are colorized as a normal HTML attribute, then the @using statement ...