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                                  • Install Required Packages

                                    Perform the following steps to install the NuGet packages required for the Spreadsheet control:

                                    1. Right-click the Dependencies node in the Solution Explorer and select Manage NuGet Packages in the invoked context menu.

                                    2. Select DevExpress 18.2 Local in the Package source drop-down list and go to the Browse page. Enable the Include pre-release check box, find the DevExpress.AspNetCore.Spreadsheet package and install it.

                                    3. Right-click the application name in the Solution Explorer and select Add | Add New Item. In the invoked Add New Item dialog, select the Installed | Visual C# | ASP.NET Core | Web category and the npm Configuration File item template. Click Add.

                                    This adds the package.json file to the project. Open this file and add the following dependencies:

                                    { "version": "1.0.0", "name": "", "private": true, "dependencies": { "devexpress-aspnetcore-spreadsheet": "~18.2.2" } }

                                    4. Right-click the package.json file and select Restore Packages. This adds the node_modules folder to the application project.

                                    5. Publish the node_modules folder's static files to the site. You can add the following code to the Startup.cs file and make the whole node_modules folder accessible from the client. To make only required client resources accessible, use bundling and minification by the means of Gulp, as an example.

                                    using Microsoft.Extensions.FileProviders; using System.IO; //... public class Startup { //... public void Configure(IApplicationBuilder app, IHostingEnvironment env) { // ... app.UseStaticFiles(); // ... app.UseStaticFiles(new StaticFileOptions { FileProvider = new PhysicalFileProvider(Path.Combine(env.ContentRootPath, "node_modules")), RequestPath = "/node_modules" }); } }

                                    Add the Spreadsheet Control
                                    Do the following to integrate the Spreadsheet control into the ASP.NET Core project:

                                    1. In the _ViewImports.cshtml file, import the DevExpress.AspNetCore namespace to be used by all other Views. Alternatively, you can add this namespace to the Views with Spreadsheet.

                                    @using DevExpress.AspNetCore

                                    2. Create a new View or open an existing one (for example, the Index.cshtml file), and register the following required resources into a header section:

                                    <script src="~/node_modules/devextreme/dist/js/dx.all.js"></script> <link href="~/node_modules/devextreme/dist/css/dx.common.css" rel="stylesheet" /> <link href="~/node_modules/devextreme/dist/css/dx.light.css" rel="stylesheet" /> <script src="~/node_modules/devexpress-aspnetcore-spreadsheet/dist/dx-aspnetcore-spreadsheet.js"></script> <link href="~/node_modules/devexpress-aspnetcore-spreadsheet/dist/dx-aspnetcore-spreadsheet.css" rel="stylesheet" />

                                    3. Create a new Controller or open an existing one (for example, the HomeController.cs file), and add an action that handles document commands as shown below:

                                    public class HomeController : Controller { [HttpPost] public ContentResult DxDocRequest() { return SpreadsheetRequestProcessor.GetResponse(HttpContext); } /// ... }

                                    4. Use the Spreadsheet in this View to display the Spreadsheet control on a web page:

                                    @(Html.DevExpress() .Spreadsheet("spreadsheet") .DocumentRequestHandlerUrl(Url.Action("DxDocRequest")))

                                    Note, that It is required to specify an URL to the action that handles document commands.

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