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Add ChartjsExercise
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‎ChartjsExercise/App.razor

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<Router AppAssembly="@typeof(App).Assembly">
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<Found Context="routeData">
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<RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
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<FocusOnNavigate RouteData="@routeData" Selector="h1" />
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</Found>
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<NotFound>
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<PageTitle>Not found</PageTitle>
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<LayoutView Layout="@typeof(MainLayout)">
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<p role="alert">Sorry, there's nothing at this address.</p>
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</LayoutView>
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</NotFound>
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</Router>

‎ChartjsExercise/ChartjsExercise.csproj

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<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.2" />
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<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.2" PrivateAssets="all" />
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<PackageReference Include="PSC.Blazor.Components.Chartjs" Version="7.0.1" />
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</ItemGroup>
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</Project>

‎ChartjsExercise/Layout/MainLayout.razor

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@inherits LayoutComponentBase
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<div class="page">
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<div class="sidebar">
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<NavMenu />
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</div>
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<main>
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<div class="top-row px-4">
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<a href="https://learn.microsoft.com/aspnet/core/" target="_blank">About</a>
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</div>
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<article class="content px-4">
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@Body
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</article>
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</main>
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</div>

‎ChartjsExercise/Layout/MainLayout.razor.css

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.page {
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position: relative;
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display: flex;
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flex-direction: column;
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}
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main {
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flex: 1;
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}
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.sidebar {
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background-image: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%);
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}
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.top-row {
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background-color: #f7f7f7;
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border-bottom: 1px solid #d6d5d5;
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justify-content: flex-end;
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height: 3.5rem;
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display: flex;
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align-items: center;
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}
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.top-row ::deep a, .top-row ::deep .btn-link {
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white-space: nowrap;
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margin-left: 1.5rem;
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text-decoration: none;
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}
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.top-row ::deep a:hover, .top-row ::deep .btn-link:hover {
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text-decoration: underline;
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}
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.top-row ::deep a:first-child {
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overflow: hidden;
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text-overflow: ellipsis;
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}
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@media (max-width: 640.98px) {
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.top-row {
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justify-content: space-between;
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}
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.top-row ::deep a, .top-row ::deep .btn-link {
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margin-left: 0;
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}
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}
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@media (min-width: 641px) {
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.page {
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flex-direction: row;
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}
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.sidebar {
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width: 250px;
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height: 100vh;
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position: sticky;
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top: 0;
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}
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.top-row {
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position: sticky;
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top: 0;
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z-index: 1;
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}
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.top-row.auth ::deep a:first-child {
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flex: 1;
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text-align: right;
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width: 0;
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}
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.top-row, article {
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padding-left: 2rem !important;
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padding-right: 1.5rem !important;
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}
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}

‎ChartjsExercise/Layout/NavMenu.razor

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<div class="top-row ps-3 navbar navbar-dark">
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<div class="container-fluid">
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<a class="navbar-brand" href="">ChartjsExercise</a>
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<button title="Navigation menu" class="navbar-toggler" @onclick="ToggleNavMenu">
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<span class="navbar-toggler-icon"></span>
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</button>
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</div>
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</div>
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<div class="@NavMenuCssClass nav-scrollable" @onclick="ToggleNavMenu">
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<nav class="flex-column">
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<div class="nav-item px-3">
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<NavLink class="nav-link" href="" Match="NavLinkMatch.All">
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<span class="bi bi-house-door-fill-nav-menu" aria-hidden="true"></span> Home
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</NavLink>
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</div>
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<div class="nav-item px-3">
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<NavLink class="nav-link" href="BarSimple">
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<span class="bi bi-plus-square-fill-nav-menu" aria-hidden="true"></span>柱状图
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</NavLink>
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</div>
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<div class="nav-item px-3">
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<NavLink class="nav-link" href="PieSimple">
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<span class="bi bi-plus-square-fill-nav-menu" aria-hidden="true"></span>饼图
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</NavLink>
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</div>
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<div class="nav-item px-3">
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<NavLink class="nav-link" href="LineSimple">
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<span class="bi bi-plus-square-fill-nav-menu" aria-hidden="true"></span>折线图
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</NavLink>
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</div>
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</nav>
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</div>
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@code {
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private bool collapseNavMenu = true;
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private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
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private void ToggleNavMenu()
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{
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collapseNavMenu = !collapseNavMenu;
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}
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}

‎ChartjsExercise/Layout/NavMenu.razor.css

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.navbar-toggler {
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background-color: rgba(255, 255, 255, 0.1);
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}
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.top-row {
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height: 3.5rem;
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background-color: rgba(0,0,0,0.4);
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}
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.navbar-brand {
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font-size: 1.1rem;
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}
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.bi {
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display: inline-block;
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position: relative;
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width: 1.25rem;
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height: 1.25rem;
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margin-right: 0.75rem;
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top: -1px;
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background-size: cover;
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}
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.bi-house-door-fill-nav-menu {
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background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-house-door-fill' viewBox='0 0 16 16'%3E%3Cpath d='M6.5 14.5v-3.505c0-.245.25-.495.5-.495h2c.25 0 .5.25.5.5v3.5a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5v-7a.5.5 0 0 0-.146-.354L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293L8.354 1.146a.5.5 0 0 0-.708 0l-6 6A.5.5 0 0 0 1.5 7.5v7a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5Z'/%3E%3C/svg%3E");
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}
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.bi-plus-square-fill-nav-menu {
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background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-plus-square-fill' viewBox='0 0 16 16'%3E%3Cpath d='M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2zm6.5 4.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3a.5.5 0 0 1 1 0z'/%3E%3C/svg%3E");
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}
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.bi-list-nested-nav-menu {
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background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-list-nested' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.5 11.5A.5.5 0 0 1 5 11h10a.5.5 0 0 1 0 1H5a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 3 7h10a.5.5 0 0 1 0 1H3a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 1 3h10a.5.5 0 0 1 0 1H1a.5.5 0 0 1-.5-.5z'/%3E%3C/svg%3E");
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}
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.nav-item {
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font-size: 0.9rem;
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padding-bottom: 0.5rem;
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}
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.nav-item:first-of-type {
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padding-top: 1rem;
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}
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.nav-item:last-of-type {
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padding-bottom: 1rem;
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}
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.nav-item ::deep a {
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color: #d7d7d7;
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border-radius: 4px;
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height: 3rem;
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display: flex;
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align-items: center;
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line-height: 3rem;
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}
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.nav-item ::deep a.active {
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background-color: rgba(255,255,255,0.37);
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color: white;
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}
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.nav-item ::deep a:hover {
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background-color: rgba(255,255,255,0.1);
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color: white;
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}
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@media (min-width: 641px) {
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.navbar-toggler {
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display: none;
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}
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.collapse {
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/* Never collapse the sidebar for wide screens */
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display: block;
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}
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.nav-scrollable {
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/* Allow sidebar to scroll for tall menus */
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height: calc(100vh - 3.5rem);
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overflow-y: auto;
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}
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}

‎ChartjsExercise/Model/Colors.cs

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namespace ChartjsExercise.Model
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{
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public static class Colors
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{
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public static List<string> Palette1 = new List<string>()
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{
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"rgba(255, 99, 132, 0.2)",
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"rgba(255, 159, 64, 0.2)",
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"rgba(255, 205, 86, 0.2)",
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"rgba(75, 192, 192, 0.2)",
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"rgba(54, 162, 235, 0.2)",
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"rgba(153, 102, 255, 0.2)",
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"rgba(201, 203, 207, 0.2)"
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};
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public static List<string> PaletteBorder1 = new List<string>()
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{
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"rgb(255, 99, 132)",
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"rgb(255, 159, 64)",
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"rgb(255, 205, 86)",
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"rgb(75, 192, 192)",
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"rgb(54, 162, 235)",
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"rgb(153, 102, 255)",
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"rgb(201, 203, 207)"
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};
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}
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}

‎ChartjsExercise/Model/DataItem.cs

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using System.Text.Json.Serialization;
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namespace ChartjsExercise.Model
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{
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public class DataItem
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{
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/// <summary>
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/// Gets or sets the group.
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/// </summary>
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/// <value>
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/// The group.
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/// </value>
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[JsonPropertyName("group")]
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public string? Group { get; set; }
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/// <summary>
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/// Gets or sets the name of the attribute
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/// </summary>
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/// <value>
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/// The name of the attribute
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/// </value>
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[JsonPropertyName("name")]
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public string? Name { get; set; }
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/// <summary>
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/// Gets or sets the value.
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/// </summary>
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/// <value>
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/// The value
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/// </value>
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[JsonPropertyName("value")]
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public decimal? Value { get; set; }
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}
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}

‎ChartjsExercise/Pages/BarSimple.razor

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@page "/BarSimple"
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@using ChartjsExercise.Model
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<h3>柱状图</h3>
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<Chart Config="_config" @ref="_chart" Height="500px"></Chart>
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@code {
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private BarChartConfig? _config;
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private Chart? _chart;
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protected override async Task OnInitializedAsync()
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{
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_config = new BarChartConfig()
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{
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Options = new Options()
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{
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Responsive = true,
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MaintainAspectRatio = false,
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Plugins = new Plugins()
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{
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Legend = new Legend()
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{
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Align = Align.Center,
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Display = true,
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Position = LegendPosition.Right
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}
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},
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Scales = new Dictionary<string, Axis>()
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{
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{
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Scales.XAxisId, new Axis()
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{
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Stacked = true,
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Ticks = new Ticks()
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{
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MaxRotation = 0,
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MinRotation = 0
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}
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}
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},
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{
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Scales.YAxisId, new Axis()
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{
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Stacked = true
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}
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}
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}
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}
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};
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_config.Data.Labels = BarSimpleData.SimpleBarText;
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_config.Data.Datasets.Add(new BarDataset()
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{
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Label = "Value",
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Data = BarSimpleData.SimpleBar.Select(l => l.Value).ToList(),
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BackgroundColor = Colors.Palette1,
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BorderColor = Colors.PaletteBorder1,
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BorderWidth = 1
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});
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}
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}

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