将视图渲染为字符串

Question

我试图将视图呈现为字符串以用作电子邮件模板.我目前正在尝试实施此示例:https: //weblog.west-wind.com/posts/2012/May/30/Rendering-ASPNET-MVC-Views-to-String

但是我对这部分代码有困难:

public ViewRenderer(ControllerContext controllerContext = null)
{
    // Create a known controller from HttpContext if no context is passed
    if (controllerContext == null)
    {
        if (HttpContext.Current != null)
            controllerContext = CreateController<ErrorController>().ControllerContext;
        else
            throw new InvalidOperationException(
                "ViewRenderer must run in the context of an ASP.NET " +
                "Application and requires HttpContext.Current to be present.");
    }
    Context = controllerContext;
}

Visual Studio给出了以下错误:

"无法找到类型或命名空间名称'ErrorController'(您是否缺少using指令或程序集引用？)"

我可能错过了一些明显但却看不清楚的东西.有任何想法吗？

Answer 1

如果您需要将视图渲染为字符串,这里是我编写的控制器的扩展方法.

注意:我会尝试找到我用来帮助我的确切链接,并在找到它时更新我的​​答案.

这是另一个描述此方法的链接.

这应该做的伎俩:

public static string RenderViewToString(this Controller controller, string viewName, object model)
    {
        var context = controller.ControllerContext;
        if (string.IsNullOrEmpty(viewName))
            viewName = context.RouteData.GetRequiredString("action");

        var viewData = new ViewDataDictionary(model);

        using (var sw = new StringWriter())
        {
            var viewResult = ViewEngines.Engines.FindPartialView(context, viewName);
            var viewContext = new ViewContext(context, viewResult.View, viewData, new TempDataDictionary(), sw);
            viewResult.View.Render(viewContext, sw);

            return sw.GetStringBuilder().ToString();
        }
    }

如果要从控制器中调用此方法,只需执行以下操作:

var strView = this.RenderViewToString("YourViewName", yourModel);