使用 Syncfusion SfSidebar 建立一個版面功能表選項清單
當建立一個 Blazor 專案時，並且開始執行的時候，會在瀏覽器畫面的左邊看到功能選項清單，對於 Syncfusion 提供了一個功能表的元件， SfMenu，可以做到類似彈出只功能選項清單的效果，當然也可以使用這個元件做出其他不同的需求出來，在這篇文章中就來看看如何使用 SfMenu 元件來設計出具有彈出子功能選項清單的效果。
這個說明專案的原始碼位於 bzSidebar
建立 Blazor Server-Side 的專案
打開 Visual Studio 2019
點選右下方的 [建立新的專案] 按鈕
[建立新專案] 對話窗將會顯示在螢幕上
從[建立新專案] 對話窗的中間區域，找到 [Blazor 應用程式] 這個專案樣板選項，並且選擇這個項目
點選右下角的 [下一步] 按鈕
現在 [設定新的專案] 對話窗將會出現
請在這個對話窗內，輸入適當的 [專案名稱] 、 [位置] 、 [解決方案名稱]
在這裡請輸入 [專案名稱] 為
bzSidebar完成後，請點選 [建立] 按鈕
當出現 [建立新的 Blazor 應用程式] 對話窗的時候
請選擇最新版本的 .NET Core 與 [Blazor 伺服器應用程式]
完成後，請點選 [建立] 按鈕
稍微等會一段時間，Blazor 專案將會建立起來
進行 Syncfusion 元件的安裝
- 滑鼠右擊 Blazor 專案的 [相依性] 節點
- 選擇 [管理 NuGet 套件]
- 切換到 [瀏覽] 標籤頁次
- 搜尋
Syncfusion.Blazor這個元件名稱 - 選擇搜尋到的 [Syncfusion.Blazor] 元件，並且安裝起來
進行 Syncfusion 元件的設定
- 打開專案根目錄下的 [Startup.cs] 這個檔案
- 找到 [ConfigureServices] 這個方法
- 在這個方法的最後面，加入底下程式碼，已完成 Blazor 元件會用到的服務註冊
#region Syncfusion 元件的服務註冊
services.AddSyncfusionBlazor();
#endregion- 在同一個檔案內，找到 [Configure] 這個方法
- 在這個方法的最前面，加入底下程式碼，宣告合法授權的金鑰 (License Key)
#region 宣告所使用 Syncfusion for Blazor 元件的使用授權碼
Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("YOUR LICENSE KEY");
#endregion打開 [Pages] 資料夾內的 [_Host.cshtml] 檔案
在
<head>標籤內，加入需要的 CSS 宣告，如底下內容若沒有加入底下的宣告，將無法正常看到 Syncfusion 的元件樣貌
<link href="_content/Syncfusion.Blazor/styles/bootstrap4.css" rel="stylesheet" />建立 SfDataManager 會用到的類別
- 在專案的 [Shared] 資料夾
- 打開 [MainLayout.razor] 檔案
- 使用底下程式碼替換到 [MainLayout.razor] 檔案內容
找到 這個註解文字，在底下的程式碼就是用來宣告彈出功能表的標記語言代碼，其中在這裡使用了 SfMenu 來宣告這個功能表要有哪一些項目，期資料定義來源將會是在 Items="@MainMenuItems" 這個屬性來宣告，因此在底下可以看到 MainMenuItems 這個 .NET 物件相關初始化地址 。
MainMenuItems 是一個集合屬性，使用這樣的程式碼來宣告：public List MainMenuItems = new List。因此在這裡需要使用 MenuItem 所生成的物件來定義功能表上所看到的每一個項目，而在這個 MenuItem 物件內，可以透過 Text 屬性來定義該功能表項目所要顯示的文字，並且該物件那還有一個 Items 屬性，這也是一個 List 集合型別的物件，所以便可以在這裡宣 定義出仔功能表的各個項目 。
底下為執行結果的螢幕截圖
@inherits LayoutComponentBase
@using Syncfusion.Blazor
@using Syncfusion.Blazor.Navigations
@inject NavigationManager NavigationManager
@*<div class="sidebar">
<NavMenu />
</div>
<div class="main">
<div class="top-row px-4">
<a href="https://docs.microsoft.com/aspnet/" target="_blank">About</a>
</div>
<div class="content px-4">
@Body
</div>
</div>*@
<div id="wrapper" style="width:100%">
<div class="col-lg-12 col-sm-12 col-md-12">
<div class="header-section dock-menu" id="header">
<ul class="header-list">
<li id="hamburger" class="icon-menu icon list" @onclick="@Toggle"></li>
<input type="text" placeholder="Search..." class="search-icon list">
<li class="right-header list">
<div class="horizontal-menu">
<SfMenu CssClass="dock-menu" Items="@AccountMenuItems" Orientation="@Orientation">
@*<MenuEvents ItemSelected="itemSelected"></MenuEvents>*@
</SfMenu>
</div>
</li>
<li class="right-header list support">Support</li>
<li class="right-header list tour">Tour</li>
</ul>
</div>
<!-- sidebar element declaration -->
<SfSidebar HtmlAttributes="@HtmlAttribute" Target=".main-content" Width="220px" DockSize="50px" EnableDock="true" @ref="Sidebar">
<ChildContent>
<div class="main-menu">
<p class="main-menu-header">功能清單</p>
<div>
<SfMenu CssClass="dock-menu" Items="@MainMenuItems"
Orientation="@VerOrientation">
<MenuEvents ItemSelected="itemSelected"></MenuEvents>
</SfMenu>
</div>
</div>
<div class="action">
<p class="main-menu-header">ACTION</p>
<button class="e-btn action-btn" id="action-button">+ Button</button>
</div>
</ChildContent>
</SfSidebar>
<!-- end of sidebar element -->
<!-- main content declaration -->
<div class="main-content" id="maintext">
<div class="content">
@Body
</div>
</div>
<!--end of main content declaration -->
</div>
</div>
@code {
SfSidebar Sidebar;
public Orientation Orientation = Orientation.Horizontal;
public Orientation VerOrientation = Orientation.Vertical;
Dictionary<string, object> HtmlAttribute = new Dictionary<string, object>()
{
{"class", "sidebar-menu" }
};
public List<MenuItem> AccountMenuItems = new List<MenuItem> {
new MenuItem {
Text = "Account",
Items = new List<MenuItem> {
new MenuItem { Text = "Profile" ,Url= $"Welcome/e.Item.Text"},
new MenuItem { Text = "Sign out" }
}
}
};
public List<MenuItem> MainMenuItems = new List<MenuItem>{
new MenuItem {
Text = "Overview", IconCss = "icon-user icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "All Data" },
new MenuItem{ Text = "Category2" },
new MenuItem{ Text = "Category3" }
}
},
new MenuItem {
Text = "Notification",
IconCss = "icon-bell-alt icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Change Profile" },
new MenuItem{ Text = "Add Name" },
new MenuItem{ Text = "Add Details" }
}
},
new MenuItem {
Text = "Info",
IconCss = "icon-tag icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Message" },
new MenuItem{ Text = "Facebook" },
new MenuItem{ Text = "Twitter" }
}
},
new MenuItem {
Text = "Comments",
IconCss = "icon-comment-inv-alt2 icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Category1 " },
new MenuItem{ Text = "Category2" },
new MenuItem{ Text = "Category3" }
}
},
new MenuItem {
Text = "Bookmarks",
IconCss = "icon-bookmark icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "All Comments" },
new MenuItem{ Text = "Add Comments" },
new MenuItem{ Text = "Delete Comments" }
}
},
new MenuItem {
Text = "Images",
IconCss = "icon-picture icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Add Name" },
new MenuItem{ Text = "Add Mobile Number" }
}
},
new MenuItem {
Text = "Users",
IconCss = "icon-user icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Mobile User" },
new MenuItem{ Text = "Laptop User" },
new MenuItem{ Text = "Desktop User" }
}
},
new MenuItem {
Text = "Settings",
IconCss = "icon-eye icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Change Profile" },
new MenuItem{ Text = "Add Name" },
new MenuItem{ Text = "Add Details" }
}
},
new MenuItem {
Text = "Info",
IconCss = "icon-tag icon",
Items = new List<MenuItem> {
new MenuItem{ Text = "Facebook" },
new MenuItem{ Text = "Mobile" }
}
}
};
public void Toggle()
{
this.Sidebar.Toggle();
}
private void itemSelected(MenuEventArgs e)
{
if (e.Item.Items.Count == 0)
{
string Url = $"Welcome/{e.Item.Text}";
NavigationManager.NavigateTo(Url);
}
}}
<style>
/* header-section styles */
#header.header-section,
#header .search-icon {
height: 50px;
}
#header #hamburger.icon-menu {
font-size: 24px;
float: left;
line-height: 50px;
}
#header .right-header {
height: 35px;
padding: 7px;
float: right;
}
#header .list {
list-style: none;
cursor: pointer;
font-size: 16px;
line-height: 35px;
}
#header .header-list {
padding-left: 15px;
margin: 0;
}
@@media(max-width:500px) {
#header .right-header.list.support,
#header .right-header.list.tour {
display: none;
}
}
/* text input styles */
#header .search-icon {
float: left;
padding-left: 15px;
border: 0px solid #33383e !important;
background-color: #33383e;
cursor: text;
width: 10em;
}
#header .search-icon:focus {
outline: none;
cursor: default;
}
/* end of text input styles */
/* end of header-section styles */
/* content area styles */
#maintext.main-content {
height: 100vh;
z-index: 1000;
}
#maintext .content {
/*margin-top: 230px;
text-align: center;
font-size: 32px;
color: #1784c7;*/
}
/* end of content area styles */
/* menu styles */
/* horizontal-menu styles */
#header .header-list .horizontal-menu .e-menu-item {
height: 35px;
vertical-align: middle;
font-size: 16px;
line-height: 35px;
}
#header .e-menu-item .e-caret {
line-height: 35px;
}
/* end of horizontal-menu styles */
/* vertical-menu styles */
.sidebar-menu .e-menu-wrapper ul .e-menu-item.e-menu-caret-icon {
width: 220px;
}
.sidebar-menu .e-menu-wrapper ul .e-menu-item:hover, .e-menu-wrapper ul .e-menu-item.e-focused:hover {
background-color: #3e454c !important;
}
.e-menu-wrapper ul .e-menu-item.e-selected {
background-color: #3e454c !important;
}
/* end of vertical-menu styles */
/* end of menu styles */
/* Sidebar styles */
/* docksidebar styles */
.e-menu-wrapper ul .e-menu-item .e-caret,
#header .search-icon,
.sidebar-menu .action-btn,
#header .e-menu-item .e-caret,
.e-menu-wrapper ul .e-menu-item {
color: #fff !important;
}
.e-close .e-menu-wrapper ul .e-menu-item {
width: 50px;
}
.e-close ul .e-menu-item.e-menu-caret-icon {
padding-right: 12px;
}
.sidebar-menu.e-dock.e-close .e-menu-wrapper ul .e-menu-item .e-caret,
.sidebar-menu.e-dock.e-close .main-menu-header,
.sidebar-menu.e-dock.e-close .action-btn {
display: none;
}
.sidebar-menu.e-dock.e-close .e-menu-wrapper ul .e-menu-item.e-menu-caret-icon,
.sidebar-menu.e-dock.e-close .e-menu-wrapper ul.e-vertical {
min-width: 0;
width: 50px !important;
}
.sidebar-menu.e-dock.e-close .e-menu-wrapper ul.e-menu {
font-size: 0;
}
.sidebar-menu.e-dock.e-close .e-menu-item .e-menu-icon {
font-size: 20px;
padding: 0;
}
.e-menu-wrapper ul .e-menu-item.e-focused {
background-color: #33383e !important;
}
.sidebar-menu, #header ul, .e-menu-wrapper, .e-menu-wrapper ul {
background-color: #33383e !important;
color: #fff !important;
overflow: hidden;
}
/* end of docksidebar styles */
/*end of Sidebar styles */
/*main-menu-header styles */
.sidebar-menu .main-menu-header {
padding: 4px 0 0 18px;
color: #656a70;
}
/*end of main-menu-header styles */
/*button styles */
.sidebar-menu .action-btn {
margin-left: 16px;
width: 165px;
height: 30px;
font-size: 13px;
border-radius: 5px;
}
.sidebar-menu .action-btn {
background-color: #1784c7;
}
/*end of button styles */
/* custom code start */
.center {
text-align: center;
display: none;
font-size: 13px;
font-weight: 400;
margin-top: 20px;
}
.sb-content-tab .center {
display: block;
}
#sb-content-header {
display: none
}
.sb-content-section {
border: 0;
}
.col-md-12, body {
padding: 0;
}
.sidebar-menu {
margin-left: -1px;
}
/*body styles */
body {
margin: 0;
overflow-y: hidden;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
-webkit-tap-highlight-color: transparent;
}
/*end of body styles */
/* custom code end */
/*icon styles */
@@font-face {
font-family: 'fontello';
src: 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IUViwQIhYsQNkRLEmAYhRWLoIgAABBECIY1RYsQMARFlZWVmzDAIBDCq4Af+FsASNsQIARAAA') format('truetype');
}
.sidebar-menu .icon-up-hand:before {
content: '\e801';
}
.sidebar-menu .icon-bell-alt:before {
content: '\e802';
}
.sidebar-menu .icon-user:before {
content: '\e803';
}
.sidebar-menu .icon-picture:before {
content: '\e804';
}
.sidebar-menu .icon-comment-alt:before {
content: '\e805';
}
.sidebar-menu .icon-tag:before {
content: '\e806';
}
.sidebar-menu .icon-comment-inv-alt2:before {
content: '\e807';
}
.sidebar-menu .icon-eye:before {
content: '\e808';
}
.sidebar-menu .icon-globe:before {
content: '\e809';
}
.sidebar-menu .icon-bookmark-empty:before {
content: '\e810';
}
.sidebar-menu .icon-bookmark:before {
content: '\e811';
}
#header .icon-menu:before {
content: '\e812';
}
.sidebar-menu .icon,
#header #hamburger.icon-menu {
font-family: 'fontello';
}
.sidebar-menu .e-menu-icon::before {
color: #656a70;
}
/*icon styles */
/* custom code start */
.sf-new .sb-header,
.sf-new .sb-bread-crumb,
.sf-new #action-description,
.sf-new .sb-action-description,
.sf-new .e-tab-header,
.sf-new .description-section,
.sf-new #description-section,
.sf-new #description,
.sf-new #navigation-btn,
.sf-new .sb-toolbar-splitter,
.sf-new .sb-footer, .sf-new #left-sidebar, .sb-component-name {
display: none
}
.sf-new .sb-right-pane.e-view {
margin-left: 0px !important;
}
.sb-action-description.sb-rightpane-padding {
padding-bottom: 0;
}
.description-section {
padding-top: 0;
}
#content-tab.sb-content-tab {
height: 100% !important;
}
.sf-new .container-fluid,
.sf-new .container-fluid .control-section,
#sidebar-section, description-section sb-rightpane-padding {
padding: 0;
}
.sb-component-name.sb-rightpane-padding {
margin-top: -56px;
}
.sb-right-pane.e-view {
left: 0;
padding-left: 0;
padding-right: 0;
top: 0;
overflow-y: hidden;
}
.sb-desktop-wrapper {
height: 100%;
}
.sb-component-name h1 {
padding-top: 0;
}
.sf-new .sb-content.e-view {
top: 0;
}
/* custom code end */
@@font-face {
font-family: 'e-icons';
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</style>- 滑鼠右擊專案的 [Data] 資料夾
- 點選 [加入] > [類別] 選項
- 在 [新增項目] 對話窗的 [名稱] 欄位輸入
OrderService - 點選 [新增] 按鈕
- 使用底下程式碼替換到 [OrderService.cs] 檔案內容
public class OrderService
{
List<Order> Items { get; set; } = new List<Order>();
public OrderService()
{
Items = Enumerable.Range(1, 75).Select(x => new Order()
{
OrderID = 1000 + x,
CustomerID = (new string[] { "ALFKI", "ANANTR", "ANTON", "BLONP", "BOLID" })[new Random().Next(5)],
Freight = 2.1 * x,
}).ToList();
}
public IEnumerable<Order> GetItems()
{
return Items;
}
public Task<Order> GetAsync(int orderID)
{
var item = Items.FirstOrDefault(x => x.OrderID == orderID);
return Task.FromResult(item);
}
public Task AddAsync(Order order)
{
Items.Add(order);
return Task.CompletedTask;
}
public Task UpdateAsync(Order order)
{
var item = Items.FirstOrDefault(x => x.OrderID == order.OrderID);
if (item != null)
{
item.Freight = order.Freight;
item.CustomerID = order.CustomerID;
}
return Task.CompletedTask;
}
public Task RemoveAsync(Order order)
{
var item = Items.FirstOrDefault(x => x.OrderID == order.OrderID);
if (item != null)
{
Items.Remove(item);
}
return Task.CompletedTask;
}
public void RemoveSomeRecordAsync()
{
Items.RemoveRange(1, 50);
Items[0].CustomerID = "Vulcan Lee";
}
}在上面的程式碼中，設計了一個 OrderService 類別，在 OrderService 建構函式內將會隨機產生出 75 筆的 Order 類別的紀錄，這些紀錄將會要顯示在網頁上面。
該 OrderService 類別提供一個 [GetItems] 方法將會取得該服務內所有的集合物件，另外，將會有相關 查詢、更新、新增與刪除 的方法定義在這個類別內，這些 CRUD 的方法分別是 GetAsync, UpdateAsync, AddAsync, DeleteAsync，使用者可以點選 DataGrid 元件上的任何一筆紀錄，便可以進行刪除動作，也可以點選新增按鈕，進行新增一筆紀錄的能力。這些方法將會於使用者對 DataGrid 紀錄做一度的時候來呼叫。
對於這個 [RemoveSomeRecordAsync()] 沒有參數的方法，則是會讓網頁上的 [CRUD] 按鈕被點選之後，可以呼叫這個方法，以便刪除 50 筆紀錄，接著將第一筆紀錄，更新為 Vulcan Lee
- 滑鼠右擊專案的 [Shared] 資料夾
- 點選 [加入] > [類別] 選項
- 在 [新增項目] 對話窗的 [Razor元件] 欄位輸入
OrderServiceAdapter - 點選 [新增] 按鈕
- 使用底下程式碼替換到 [OrderServiceAdapter.razor] 檔案內容
@using Syncfusion.Blazor;
@using Syncfusion.Blazor.Data;
@using Newtonsoft.Json
@using bzsfCustomBindingCRUD.Data
@inherits DataAdaptor<OrderService>
<CascadingValue Value="@this">
@ChildContent
</CascadingValue>
@code {
[Parameter]
[JsonIgnore]
public RenderFragment ChildContent { get; set; }
// Performs data Read operation
public override async Task<object> ReadAsync(DataManagerRequest dataManagerRequest, string key = null)
{
IEnumerable<Order> DataSource = (IEnumerable<Order>)Service.GetItems();
if (dataManagerRequest.Search != null && dataManagerRequest.Search.Count > 0)
{
// Searching
DataSource = DataOperations.PerformSearching(DataSource, dataManagerRequest.Search);
}
if (dataManagerRequest.Sorted != null && dataManagerRequest.Sorted.Count > 0)
{
// Sorting
DataSource = DataOperations.PerformSorting(DataSource, dataManagerRequest.Sorted);
}
if (dataManagerRequest.Where != null && dataManagerRequest.Where.Count > 0)
{
// Filtering
DataSource = DataOperations.PerformFiltering(DataSource, dataManagerRequest.Where, dataManagerRequest.Where[0].Operator);
}
int count = DataSource.Cast<Order>().Count();
if (dataManagerRequest.Skip != 0)
{
//Paging
DataSource = DataOperations.PerformSkip(DataSource, dataManagerRequest.Skip);
}
if (dataManagerRequest.Take != 0)
{
DataSource = DataOperations.PerformTake(DataSource, dataManagerRequest.Take);
}
var item = dataManagerRequest.RequiresCounts ? new DataResult() { Result = DataSource, Count = count } : (object)DataSource;
await Task.Yield();
return item;
}
public override async Task<object> InsertAsync(DataManager dataManager, object data, string key)
{
await Service.AddAsync(data as Order);
return data;
}
public override async Task<object> UpdateAsync(DataManager dataManager, object data, string keyfield, string key)
{
await Service.UpdateAsync(data as Order);
return data;
}
public override async Task<object> RemoveAsync(DataManager dataManager, object data, string keyField, string key)
{
var item = await Service.GetAsync(Convert.ToInt32(data));
await Service.RemoveAsync(item);
return data;
}
}在這個 OrderServiceAdapter.razor 轉接器元件，將會於 Syncfusion DataGrid 元件的 SfDataManager 屬性內，如此，當 DataGrid 要取得相關紀錄，或者要進行 CRUD 的紀錄異動的時候，就會呼叫該 OrderServiceAdapter.razor 內所提供的方法。
這個類別實際上繼承於 DataAdaptor 類別，該類別提供許多方法多載，只需要覆寫相關方法，讓這些方法呼叫特定服務的方法，就可以達成資料異動與存取的目的。
更多這方面的資訊，可以參考 Custom Binding in Blazor DataManager component
註冊 OrderService 服務
- 打開專案根目錄下的 [Startup.cs] 這個檔案
- 找到 [ConfigureServices] 這個方法
- 在這個方法的最後面，加入底下程式碼，已完成服務註冊
services.AddSingleton<OrderService>();開始使用 Syncfusion 的 SfGrid 元件與客製轉換器
- 打開 [Pages] 資料夾內的 [Index.razor] 檔案
- 將底下的程式碼替換掉原先的內容
@page "/"
@using System.Threading
@using Syncfusion.Blazor
@using Syncfusion.Blazor.Data
@using Syncfusion.Blazor.Grids
@using bzsfCustomBindingCRUD.Data
@inject OrderService OrderService
<h1>Hello, world!</h1>
<div style="margin-bottom: 20px;">
Current UI culture (used for localization): @Thread.CurrentThread.CurrentUICulture.Name
<br />
Current thread culture (used for date and number formatting): @Thread.CurrentThread.CurrentCulture.Name
</div>
<button class="btn btn-primary" @onclick="OnClick">CRUD</button>
@*<SfDataManager AdaptorInstance="@typeof(CustomAdaptor)" Adaptor="Adaptors.CustomAdaptor"></SfDataManager>*@
<SfGrid @ref="Grid" TValue="Order" ID="Grid"
AllowSorting="true" AllowFiltering="true" AllowPaging="true"
Toolbar="@(new List<string>() { "Add", "Delete", "Update", "Cancel","Search" })">
<SfDataManager Adaptor="Adaptors.CustomAdaptor">
<OrderServiceAdapter></OrderServiceAdapter>
</SfDataManager>
<GridPageSettings PageSize="8"></GridPageSettings>
<GridEditSettings AllowEditing="true" AllowDeleting="true" AllowAdding="true" Mode="@EditMode.Dialog"></GridEditSettings>
<GridSearchSettings Fields=@InitSearch Operator=Syncfusion.Blazor.Operator.Contains IgnoreCase="true"></GridSearchSettings>
<GridColumns>
<GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" IsPrimaryKey="true" TextAlign="@TextAlign.Center" Width="140"></GridColumn>
<GridColumn Field=@nameof(Order.CustomerID) HeaderText="Customer Name" Width="150"></GridColumn>
<GridColumn Field=@nameof(Order.Freight) HeaderText="Freight" Width="150"></GridColumn>
</GridColumns>
</SfGrid>
@code{
SfGrid<Order> Grid;
string[] InitSearch = (new string[] { "CustomerID" });
protected override void OnInitialized()
{
}
void OnClick()
{
OrderService.RemoveSomeRecordAsync();
Grid.Refresh();
}
}
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