Razor 模板自己渲染出结果 string

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using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Mvc.ModelBinding; using Microsoft.AspNetCore.Mvc.Razor; using Microsoft.AspNetCore.Mvc.Rendering; using Microsoft.AspNetCore.Mvc.ViewFeatures; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Threading.Tasks;   namespace XXX {     public class ViewRenderService     {         IRazorViewEngine _viewEngine;         IHttpContextAccessor _httpContextAccessor;           public ViewRenderService(IRazorViewEngine viewEngine, IHttpContextAccessor httpContextAccessor)         {             _viewEngine = viewEngine;             _httpContextAccessor = httpContextAccessor;         }           public string Render(string viewPath)         {             return Render(viewPath, string.Empty);         }           public string Render<TModel>(string viewPath, TModel model)         {             var viewEngineResult = _viewEngine.GetView("~/", viewPath, false);               if (!viewEngineResult.Success)             {                 throw new InvalidOperationException($"Couldn't find view {viewPath}");             }               var view = viewEngineResult.View;               using (var output = new StringWriter())             {                 var viewContext = new ViewContext();                 viewContext.HttpContext = _httpContextAccessor.HttpContext;                 viewContext.ViewData = new ViewDataDictionary<TModel>(new EmptyModelMetadataProvider(), new ModelStateDictionary()) { Model = model };                 viewContext.Writer = output;                   view.RenderAsync(viewContext).GetAwaiter().GetResult();                   return output.ToString();             }         }     } }

 

在 Startup.cs 里注册这个 service 类

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1	services.AddTransient<ViewRenderService>();

 

在 controller 类中定义使用

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public class FriendlylinksController : BaseController {     private readonly ViewRenderService _viewRender;     public FriendlylinksController(ViewRenderService viewRender) {         _viewRender = viewRender;     } }