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MackinnonBuckMackinnonBuck
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Merge branch 'release/5.0-preview8'
2 parents e7b55df + 4734f47 commit 48d7343

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-66
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‎AspNetCore.sln‎

Lines changed: 93 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1427,6 +1427,20 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.Compon
14271427
EndProject
14281428
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.Components.Web.Extensions.Tests", "src\Components\Web.Extensions\test\Microsoft.AspNetCore.Components.Web.Extensions.Tests.csproj", "{157605CB-5170-4C1A-980F-4BAE42DB60DE}"
14291429
EndProject
1430+
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "testassets", "testassets", "{2531F00A-54EB-4074-9C0B-9AF9FB3679DC}"
1431+
EndProject
1432+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BasicTestApp", "src\Components\test\testassets\BasicTestApp\BasicTestApp.csproj", "{85D67E40-4B11-48ED-8C43-34590A1FB9ED}"
1433+
EndProject
1434+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LazyTestContentPackage", "src\Components\test\testassets\LazyTestContentPackage\LazyTestContentPackage.csproj", "{C0EF53A5-5A94-4849-86B0-2297EA08D649}"
1435+
EndProject
1436+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.App", "src\Components\test\testassets\ComponentsApp.App\ComponentsApp.App.csproj", "{4FDD820F-8397-41B7-956E-F257DD044BD8}"
1437+
EndProject
1438+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.Server", "src\Components\test\testassets\ComponentsApp.Server\ComponentsApp.Server.csproj", "{CA7C7A53-446F-453A-A57B-78BB1443B8A8}"
1439+
EndProject
1440+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestContentPackage", "src\Components\test\testassets\TestContentPackage\TestContentPackage.csproj", "{B32C5882-2313-40D0-A003-2FF33724CFE6}"
1441+
EndProject
1442+
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Components.TestServer", "src\Components\test\testassets\TestServer\Components.TestServer.csproj", "{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}"
1443+
EndProject
14301444
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Sdk", "Sdk", "{FED4267E-E5E4-49C5-98DB-8B3F203596EE}"
14311445
EndProject
14321446
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}"
@@ -6763,6 +6777,78 @@ Global
67636777
{157605CB-5170-4C1A-980F-4BAE42DB60DE}.Release|x64.Build.0 = Release|Any CPU
67646778
{157605CB-5170-4C1A-980F-4BAE42DB60DE}.Release|x86.ActiveCfg = Release|Any CPU
67656779
{157605CB-5170-4C1A-980F-4BAE42DB60DE}.Release|x86.Build.0 = Release|Any CPU
6780+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6781+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|Any CPU.Build.0 = Debug|Any CPU
6782+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|x64.ActiveCfg = Debug|Any CPU
6783+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|x64.Build.0 = Debug|Any CPU
6784+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|x86.ActiveCfg = Debug|Any CPU
6785+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Debug|x86.Build.0 = Debug|Any CPU
6786+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|Any CPU.ActiveCfg = Release|Any CPU
6787+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|Any CPU.Build.0 = Release|Any CPU
6788+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|x64.ActiveCfg = Release|Any CPU
6789+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|x64.Build.0 = Release|Any CPU
6790+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|x86.ActiveCfg = Release|Any CPU
6791+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED}.Release|x86.Build.0 = Release|Any CPU
6792+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6793+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|Any CPU.Build.0 = Debug|Any CPU
6794+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|x64.ActiveCfg = Debug|Any CPU
6795+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|x64.Build.0 = Debug|Any CPU
6796+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|x86.ActiveCfg = Debug|Any CPU
6797+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Debug|x86.Build.0 = Debug|Any CPU
6798+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|Any CPU.ActiveCfg = Release|Any CPU
6799+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|Any CPU.Build.0 = Release|Any CPU
6800+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|x64.ActiveCfg = Release|Any CPU
6801+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|x64.Build.0 = Release|Any CPU
6802+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|x86.ActiveCfg = Release|Any CPU
6803+
{C0EF53A5-5A94-4849-86B0-2297EA08D649}.Release|x86.Build.0 = Release|Any CPU
6804+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6805+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|Any CPU.Build.0 = Debug|Any CPU
6806+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|x64.ActiveCfg = Debug|Any CPU
6807+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|x64.Build.0 = Debug|Any CPU
6808+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|x86.ActiveCfg = Debug|Any CPU
6809+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Debug|x86.Build.0 = Debug|Any CPU
6810+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|Any CPU.ActiveCfg = Release|Any CPU
6811+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|Any CPU.Build.0 = Release|Any CPU
6812+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|x64.ActiveCfg = Release|Any CPU
6813+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|x64.Build.0 = Release|Any CPU
6814+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|x86.ActiveCfg = Release|Any CPU
6815+
{4FDD820F-8397-41B7-956E-F257DD044BD8}.Release|x86.Build.0 = Release|Any CPU
6816+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6817+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|Any CPU.Build.0 = Debug|Any CPU
6818+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|x64.ActiveCfg = Debug|Any CPU
6819+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|x64.Build.0 = Debug|Any CPU
6820+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|x86.ActiveCfg = Debug|Any CPU
6821+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Debug|x86.Build.0 = Debug|Any CPU
6822+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|Any CPU.ActiveCfg = Release|Any CPU
6823+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|Any CPU.Build.0 = Release|Any CPU
6824+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|x64.ActiveCfg = Release|Any CPU
6825+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|x64.Build.0 = Release|Any CPU
6826+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|x86.ActiveCfg = Release|Any CPU
6827+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8}.Release|x86.Build.0 = Release|Any CPU
6828+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6829+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|Any CPU.Build.0 = Debug|Any CPU
6830+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|x64.ActiveCfg = Debug|Any CPU
6831+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|x64.Build.0 = Debug|Any CPU
6832+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|x86.ActiveCfg = Debug|Any CPU
6833+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Debug|x86.Build.0 = Debug|Any CPU
6834+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|Any CPU.ActiveCfg = Release|Any CPU
6835+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|Any CPU.Build.0 = Release|Any CPU
6836+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|x64.ActiveCfg = Release|Any CPU
6837+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|x64.Build.0 = Release|Any CPU
6838+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|x86.ActiveCfg = Release|Any CPU
6839+
{B32C5882-2313-40D0-A003-2FF33724CFE6}.Release|x86.Build.0 = Release|Any CPU
6840+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
6841+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|Any CPU.Build.0 = Debug|Any CPU
6842+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|x64.ActiveCfg = Debug|Any CPU
6843+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|x64.Build.0 = Debug|Any CPU
6844+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|x86.ActiveCfg = Debug|Any CPU
6845+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Debug|x86.Build.0 = Debug|Any CPU
6846+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|Any CPU.ActiveCfg = Release|Any CPU
6847+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|Any CPU.Build.0 = Release|Any CPU
6848+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|x64.ActiveCfg = Release|Any CPU
6849+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|x64.Build.0 = Release|Any CPU
6850+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|x86.ActiveCfg = Release|Any CPU
6851+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00}.Release|x86.Build.0 = Release|Any CPU
67666852
{6B2734BF-C61D-4889-ABBF-456A4075D59B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
67676853
{6B2734BF-C61D-4889-ABBF-456A4075D59B}.Debug|Any CPU.Build.0 = Debug|Any CPU
67686854
{6B2734BF-C61D-4889-ABBF-456A4075D59B}.Debug|x64.ActiveCfg = Debug|Any CPU
@@ -7634,6 +7720,13 @@ Global
76347720
{F71FE795-9923-461B-9809-BB1821A276D0} = {60D51C98-2CC0-40DF-B338-44154EFEE2FF}
76357721
{8294A74F-7DAA-4B69-BC56-7634D93C9693} = {F71FE795-9923-461B-9809-BB1821A276D0}
76367722
{157605CB-5170-4C1A-980F-4BAE42DB60DE} = {F71FE795-9923-461B-9809-BB1821A276D0}
7723+
{2531F00A-54EB-4074-9C0B-9AF9FB3679DC} = {0508E463-0269-40C9-B5C2-3B600FB2A28B}
7724+
{85D67E40-4B11-48ED-8C43-34590A1FB9ED} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
7725+
{C0EF53A5-5A94-4849-86B0-2297EA08D649} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
7726+
{4FDD820F-8397-41B7-956E-F257DD044BD8} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
7727+
{CA7C7A53-446F-453A-A57B-78BB1443B8A8} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
7728+
{B32C5882-2313-40D0-A003-2FF33724CFE6} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
7729+
{26F88A06-319C-43F3-9FD9-8BC2D29F8C00} = {2531F00A-54EB-4074-9C0B-9AF9FB3679DC}
76377730
{FED4267E-E5E4-49C5-98DB-8B3F203596EE} = {562D5067-8CD8-4F19-BCBB-873204932C61}
76387731
{6B2734BF-C61D-4889-ABBF-456A4075D59B} = {FED4267E-E5E4-49C5-98DB-8B3F203596EE}
76397732
{83371889-9A3E-4D16-AE77-EB4F83BC6374} = {FED4267E-E5E4-49C5-98DB-8B3F203596EE}

‎src/Components/Components/src/Routing/Router.cs‎

Lines changed: 9 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -68,12 +68,12 @@ static readonly ReadOnlyDictionary<string, object> _emptyParametersDictionary
6868
/// <summary>
6969
/// Get or sets the content to display when asynchronous navigation is in progress.
7070
/// </summary>
71-
[Parameter] public RenderFragment Navigating { get; set; }
71+
[Parameter] public RenderFragment? Navigating { get; set; }
7272

7373
/// <summary>
7474
/// Gets or sets a handler that should be called before navigating to a new page.
7575
/// </summary>
76-
[Parameter] public Func<NavigationContext, Task> OnNavigateAsync { get; set; }
76+
[Parameter] public Func<NavigationContext, Task>? OnNavigateAsync { get; set; }
7777

7878
private RouteTable Routes { get; set; }
7979

@@ -195,10 +195,6 @@ internal virtual void Refresh(bool isNavigationIntercepted)
195195

196196
private async ValueTask<bool> RunOnNavigateAsync(string path, Task previousOnNavigate)
197197
{
198-
if (OnNavigateAsync == null)
199-
{
200-
return true;
201-
}
202198

203199
// Cancel the CTS instead of disposing it, since disposing does not
204200
// actually cancel and can cause unintended Object Disposed Exceptions.
@@ -210,6 +206,11 @@ private async ValueTask<bool> RunOnNavigateAsync(string path, Task previousOnNav
210206
// invocation.
211207
await previousOnNavigate;
212208

209+
if (OnNavigateAsync == null)
210+
{
211+
return true;
212+
}
213+
213214
_onNavigateCts = new CancellationTokenSource();
214215
var navigateContext = new NavigationContext(path, _onNavigateCts.Token);
215216

@@ -227,14 +228,12 @@ private async ValueTask<bool> RunOnNavigateAsync(string path, Task previousOnNav
227228
if (e.CancellationToken != navigateContext.CancellationToken)
228229
{
229230
var rethrownException = new InvalidOperationException("OnNavigateAsync can only be cancelled via NavigateContext.CancellationToken.", e);
230-
_renderHandle.Render(builder => ExceptionDispatchInfo.Capture(rethrownException).Throw());
231-
return false;
231+
_renderHandle.Render(builder => ExceptionDispatchInfo.Throw(rethrownException));
232232
}
233233
}
234234
catch (Exception e)
235235
{
236-
_renderHandle.Render(builder => ExceptionDispatchInfo.Capture(e).Throw());
237-
return false;
236+
_renderHandle.Render(builder => ExceptionDispatchInfo.Throw(e));
238237
}
239238

240239
return false;

‎src/Components/Web.Extensions/src/HeadManagement/HeadManagementJSRuntimeExtensions.cs‎

Lines changed: 28 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,28 @@
1+
// Copyright (c) .NET Foundation. All rights reserved.
2+
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
3+
4+
using System.Threading.Tasks;
5+
using Microsoft.JSInterop;
6+
7+
namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
8+
{
9+
internal static class HeadManagementJSRuntimeExtensions
10+
{
11+
private const string JsFunctionsPrefix = "_blazorHeadManager";
12+
13+
public static ValueTask SetTitleAsync(this IJSRuntime jsRuntime, string title)
14+
{
15+
return jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.setTitle", title);
16+
}
17+
18+
public static ValueTask AddOrUpdateHeadTagAsync(this IJSRuntime jsRuntime, TagElement tag, string id)
19+
{
20+
return jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.addOrUpdateHeadTag", tag, id);
21+
}
22+
23+
public static ValueTask RemoveHeadTagAsync(this IJSRuntime jsRuntime, string id)
24+
{
25+
return jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.removeHeadTag", id);
26+
}
27+
}
28+
}

‎src/Components/Web.Extensions/src/HeadManagement/HeadTagBase.cs‎

Lines changed: 67 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,67 @@
1+
// Copyright (c) .NET Foundation. All rights reserved.
2+
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
3+
4+
using System;
5+
using System.Collections.Generic;
6+
using System.Text.Json;
7+
using System.Threading.Tasks;
8+
using Microsoft.AspNetCore.Components.Rendering;
9+
using Microsoft.JSInterop;
10+
11+
namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
12+
{
13+
/// <summary>
14+
/// Serves as a base for components that represent tags in the HTML head.
15+
/// </summary>
16+
public abstract class HeadTagBase : ComponentBase, IDisposable
17+
{
18+
private readonly string _id = Guid.NewGuid().ToString("N");
19+
20+
private TagElement _tagElement;
21+
22+
private bool _hasRendered;
23+
24+
[Inject]
25+
private IJSRuntime JSRuntime { get; set; } = default!;
26+
27+
/// <summary>
28+
/// Gets or sets a collection of additional attributes that will be applied to the meta element.
29+
/// </summary>
30+
[Parameter(CaptureUnmatchedValues = true)]
31+
public IReadOnlyDictionary<string, object>? Attributes { get; set; }
32+
33+
/// <summary>
34+
/// Gets the name of the tag being represented.
35+
/// </summary>
36+
protected abstract string TagName { get; }
37+
38+
/// <inheritdoc />
39+
protected override void OnParametersSet()
40+
{
41+
_tagElement = new TagElement(TagName, Attributes);
42+
}
43+
44+
/// <inheritdoc />
45+
protected override async Task OnAfterRenderAsync(bool firstRender)
46+
{
47+
_hasRendered = true;
48+
49+
await JSRuntime.AddOrUpdateHeadTagAsync(_tagElement, _id);
50+
}
51+
52+
/// <inheritdoc />
53+
protected override void BuildRenderTree(RenderTreeBuilder builder)
54+
{
55+
builder.AddMarkupContent(0, $"<!--Head:{JsonSerializer.Serialize(_tagElement, JsonSerializerOptionsProvider.Options)}-->");
56+
}
57+
58+
/// <inheritdoc />
59+
public void Dispose()
60+
{
61+
if (_hasRendered)
62+
{
63+
_ = JSRuntime.RemoveHeadTagAsync(_id);
64+
}
65+
}
66+
}
67+
}

‎src/Components/Web.Extensions/src/HeadManagement/Link.cs‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
// Copyright (c) .NET Foundation. All rights reserved.
2+
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
3+
4+
namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
5+
{
6+
/// <summary>
7+
/// A component that adds a link tag to the HTML head.
8+
/// </summary>
9+
public sealed class Link : HeadTagBase
10+
{
11+
/// <inheritdoc />
12+
protected override string TagName => "link";
13+
}
14+
}

‎src/Components/Web.Extensions/src/HeadManagement/Meta.cs‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
// Copyright (c) .NET Foundation. All rights reserved.
2+
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
3+
4+
namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
5+
{
6+
/// <summary>
7+
/// A component that adds a meta tag to the HTML head.
8+
/// </summary>
9+
public sealed class Meta : HeadTagBase
10+
{
11+
/// <inheritdoc />
12+
protected override string TagName => "meta";
13+
}
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}

‎src/Components/Web.Extensions/src/HeadManagement/TagElement.cs‎

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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System.Collections.Generic;
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namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
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{
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internal readonly struct TagElement
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{
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public string Type => "tag";
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public string TagName { get; }
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public IReadOnlyDictionary<string, object>? Attributes { get; }
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public TagElement(string tagName, IReadOnlyDictionary<string, object>? attributes)
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{
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TagName = tagName;
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Attributes = attributes;
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}
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}
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}

‎src/Components/Web.Extensions/src/HeadManagement/Title.cs‎

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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System.Text.Json;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Components.Rendering;
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using Microsoft.JSInterop;
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namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
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{
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/// <summary>
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/// A component that changes the title of the document.
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/// </summary>
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public sealed class Title : ComponentBase
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{
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[Inject]
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private IJSRuntime JSRuntime { get; set; } = default!;
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/// <summary>
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/// Gets or sets the value to use as the document's title.
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/// </summary>
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[Parameter]
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public string Value { get; set; } = string.Empty;
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/// <inheritdoc />
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protected override async Task OnAfterRenderAsync(bool firstRender)
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{
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await JSRuntime.SetTitleAsync(Value);
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}
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/// <inheritdoc />
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protected override void BuildRenderTree(RenderTreeBuilder builder)
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{
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builder.AddMarkupContent(0, $"<!--Head:{JsonSerializer.Serialize(new TitleElement(Value), JsonSerializerOptionsProvider.Options)}-->");
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}
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}
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}

‎src/Components/Web.Extensions/src/HeadManagement/TitleElement.cs‎

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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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namespace Microsoft.AspNetCore.Components.Web.Extensions.Head
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{
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internal readonly struct TitleElement
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{
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public string Type => "title";
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public string Title { get; }
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public TitleElement(string title)
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{
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Title = title;
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}
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}
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}

‎src/Components/Web.Extensions/src/Microsoft.AspNetCore.Components.Web.Extensions.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<Project Sdk="Microsoft.NET.Sdk.Razor">
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<PropertyGroup>
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<TargetFramework>$(DefaultNetCoreTargetFramework)</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Microsoft.AspNetCore.Components" />
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<Reference Include="Microsoft.AspNetCore.DataProtection" />
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<Reference Include="Microsoft.JSInterop" />
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</ItemGroup>

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