DevExpress使用教程：手把手教你创建ASP.NET Core Dashboard应用

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DevExpress拥有.NET开发需要的所有平台控件，包含600多个UI控件、报表平台、DevExpress Dashboard eXpressApp 框架、适用于 Visual Studio的CodeRush等一系列辅助工具。

本教程描述如何将Web Dashboard控件集成到ASP.NET Core Web应用程序中。

先决条件

Steps 1. 配置ASP.NET Core Web应用程序

1. 在Visual Studio中，创建一个新项目并在开始页面上选择ASP.NET Core Web Application作为项目模板。

2. 指定.NET Core版本，选择Web应用程序(Model-View-Controller)，然后单击OK。

3. 打开NuGet Package Manager并将程序包源设置为All，安装以下npm软件包：

4. 在Solution Explorer中右键单击该项目，然后从上下文菜单中选择Add | New Folder，将创建的文件夹重命名为App_Data并在其中创建Dashboards文件夹。

5. 打开Add New Item对话框(Ctrl+Shift+A)，将npm配置文件（package.json）添加到项目中，并添加以下npm包：

json

{
"version": "1.0.0",
"name": "asp.net",
"private": true,
"license": "MIT",
"devDependencies": {
"devextreme": "20.2-next",
"@devexpress/analytics-core": "20.2-next",
"devexpress-dashboard": "20.2-next",
"jquery-ui-dist": "^1.12.1"
}
}

6. 右键单击package.json，然后选择Restore Packages。

7. 在根目录中创建bundleconfig.json文件，并添加以下配置：

json

[
{
"outputFileName": "wwwroot/css/site.min.css",
"inputFiles": [
"node_modules/devextreme/dist/css/dx.common.css",
"node_modules/devextreme/dist/css/dx.light.css",
"node_modules/@devexpress/analytics-core/dist/css/dx-analytics.common.css",
"node_modules/@devexpress/analytics-core/dist/css/dx-analytics.light.css",
"node_modules/@devexpress/analytics-core/dist/css/dx-querybuilder.css",
"node_modules/devexpress-dashboard/dist/css/dx-dashboard.light.min.css"
],
"minify": { "enabled": false, "adjustRelativePaths": false }
},
{
"outputFileName": "wwwroot/js/site.min.js",
"inputFiles": [
"node_modules/jquery/dist/jquery.min.js",
"node_modules/jquery-ui-dist/jquery-ui.min.js",
"node_modules/knockout/build/output/knockout-latest.js",
"node_modules/ace-builds/src-min-noconflict/ace.js",
"node_modules/ace-builds/src-min-noconflict/ext-language_tools.js",
"node_modules/ace-builds/src-min-noconflict/theme-dreamweaver.js",
"node_modules/ace-builds/src-min-noconflict/theme-ambiance.js",
"node_modules/devextreme/dist/js/dx.all.js",
"node_modules/@devexpress/analytics-core/dist/js/dx-analytics-core.min.js",
"node_modules/@devexpress/analytics-core/dist/js/dx-querybuilder.min.js",
"node_modules/devexpress-dashboard/dist/js/dx-dashboard.min.js"
],
"minify": {
"enabled": false
},
"sourceMap": false
}
]

8. 在项目的根目录中创建libman.json文件，并添加以下LibMan配置以将图标字体复制到应用程序的静态内容文件夹中：

json

{
"version": "1.0",
"defaultProvider": "filesystem",
"libraries": [
{
"library": "node_modules/devextreme/dist/css/icons/",
"destination": "wwwroot/css/icons/",
"files": [
"dxicons.ttf",
"dxicons.woff",
"dxicons.woff2"
]
}
]
}

9. 打开下面的路径，然后将nwind.xml数据库复制到项目的App_Data文件夹中。

C:\Users\Public\Documents\DevExpress Demos 20.2\Components\Data\nwind.xml

10. 打开appsettings.json文件，创建ConnectionStrings对象，并添加nwind连接字符串以注册数据连接：

json

{
"Logging": {
// ..
},
"ConnectionStrings": {
"nwind": "XpoProvider=InMemoryDataStore;Read Only=true;Data Source=App_Data\\nwind.xml;"
}
}

Steps 2.添加和配置Web Dashboard

11. 打开Index.cshtml文件，并将其内容替换为以下代码：

cshtml

@{ 
Layout = null;
}
<!-- Add the following namespace usages: -->
@using DevExpress.AspNetCore
@using DevExpress.DashboardWeb
@using DevExpress.DashboardAspNetCore

<!DOCTYPE html>
<html lang="en">
<head>
<!-- Add bundled resources. -->
<link href="~/css/site.min.css" rel="stylesheet" />
<script src="~/js/site.min.js"></script>
</head>
<body>
<!-- Add the Web Dashboard with the "clientDashboardControl1" name to a View, specify its size, and set the Working Mode to Designer. -->
<div style="position: absolute; left:0;top:0;right:0;bottom:0;">
@(Html.DevExpress().Dashboard("clientDashboardControl1")
.WorkingMode(WorkingMode.Designer)
.Width("100%")
.Height("100%")
)
</div>
</body>
</html>

12. 打开Startup.cs文件并替换其内容：

.NET 5.0 和 .NET Core 3.1

using DevExpress.AspNetCore;
using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardWeb;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.Hosting;

namespace AspNetCoreDashboardWebApplication {
public class Startup {
public Startup(IConfiguration configuration, IWebHostEnvironment hostingEnvironment) {
Configuration = configuration;
FileProvider = hostingEnvironment.ContentRootFileProvider;
}

public IConfiguration Configuration { get; }
public IFileProvider FileProvider { get; }

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services) {
// Configures services to use the Web Dashboard Control.
services
.AddDevExpressControls()
.AddControllersWithViews()
.AddDefaultDashboardController(configurator => {
configurator.SetDashboardStorage(new DashboardFileStorage(FileProvider.GetFileInfo("App_Data/Dashboards").PhysicalPath));
configurator.SetConnectionStringsProvider(new DashboardConnectionStringsProvider(Configuration));
});
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {
if(env.IsDevelopment()) {
app.UseDeveloperExceptionPage();
} else {
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
// Registers the DevExpress middleware.
app.UseDevExpressControls();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints => {
// Maps the dashboard route.
EndpointRouteBuilderExtension.MapDashboardRoute(endpoints, "api/dashboards");
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
}
}

.NET Core 2.1

using DevExpress.AspNetCore;
using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardWeb;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.FileProviders;

namespace AspNetCoreDashboardWebApplication {
public class Startup { 
public Startup(IConfiguration configuration, IHostingEnvironment hostingEnvironment) {
Configuration = configuration;
FileProvider = hostingEnvironment.ContentRootFileProvider;
}

public IConfiguration Configuration { get; }
public IFileProvider FileProvider { get; }

public void ConfigureServices(IServiceCollection services) {
// Add a DashboardController class descendant with a specified dashboard storage
// and a connection string provider.
services
.AddMvc()
.AddDefaultDashboardController(configurator => {
configurator.SetDashboardStorage(new DashboardFileStorage(FileProvider.GetFileInfo("App_Data/Dashboards").PhysicalPath));
configurator.SetConnectionStringsProvider(new DashboardConnectionStringsProvider(Configuration));
});
// 
services.AddDevExpressControls();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env) {
if (env.IsDevelopment()) {
app.UseDeveloperExceptionPage();
} else {
app.UseExceptionHandler("/Home/Error");
}

app.UseStaticFiles();
// Register the DevExpress middleware.
app.UseDevExpressControls();
app.UseMvc(routes => {
// Map dashboard routes.
routes.MapDashboardRoute("api/dashboard");
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}
}
}

Steps 3.创建Dashboard

13. 现在可以使用设计器应用程序，生成并运行项目。

您的应用程序应如下所示：

14. 在Web Dashboard中创建第一个仪表板。

Steps 4.切换到Viewer模式

创建并保存仪表板后，可以将Dashboard Designer应用程序切换到Viewer模式。

15. 在项目中，打开Views | Home | Index.cshtml文件，更新BuilderFactory.Dashboard帮助器方法的代码，如下所示：

@(Html.DevExpress().Dashboard("clientDashboardDesigner1")
.WorkingMode(WorkingMode.ViewerOnly)
.Width("100%")
.Height("100%")
)

16. 运行应用程序，ASP.NET Core Dashboard控件显示 ~/App_Data/Dashboards中的仪表板。

限制

ASP.NET Core Dashboard控件具有以下限制：

OLAP模式仅通过MSMDPUMP 支持XML for Analysis（XMLA），使用DashboardOlapDataSource.OlapDataProvider静态属性来指定XMLA数据提供程序。
如果将ASP.NET Core Dashboard控件用于非Windows平台，则需要另外配置该控件。详细信息：Linux and MacOS Specifics。

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