返回剃须刀使用JSON（ASP MVC 3）局部视图 [英] Return Razor partial view using JSON (ASP MVC 3)

问题描述

在MVC 2与普通视图引擎，我可以通过返回一个ASCX局部视图作为字符串返回JSON（）

但随着新的Razor .cshtml观点我无法弄清楚如何做到这一点。我不断收到键入ASP.CustomerForm_cshtml不从'System.Web.UI.UserControl'继承。

局部视图从 System.Web.Mvc.WebViewPage＆LT继承; T＆GT; 和其他错误弹出，如果我从的System.Web继承。 UI.UserControl＆LT; T＆GT; 作为第一个错误说：

这是如何解决这一问题使用ASP MVC 3的Razor视图引擎？有什么想法

这是我的ControlToString功能：

 私人字符串ControlToString（串了ControlPath，对象模型）
    {
        的ViewPage页=新的ViewPage（）;
        ViewUserControl CTL =（ViewUserControl）page.LoadControl（了ControlPath）;
        page.Controls.Add（CTL）;
        page.ViewData.Model =模型;
        page.ViewContext =新ViewContext（）;
        System.IO.StringWriter作家=新System.IO.StringWriter（）;
        System.Web.HttpContext.Current.Server.Execute（页，作家，FALSE）;
        字符串outputToReturn = writer.ToString（）;
        writer.Close（）;
        //返回this.Json（outputToReturn.Trim（））;
        返回outputToReturn.Trim（）;
    }
 

解决方案

此的可能的帮助你，因为我已经写它关闭我的头顶部没有测试它除了以验证它返回渲染CSHTML文件。

我以为这是在一个控制器的方法。

 私人字符串ControlToString（串了ControlPath，对象模型）{
    CshtmlView控制=新CshtmlView（了ControlPath）;    HtmlTextWriter的作家=新的HtmlTextWriter（新System.IO.StringWriter（））;
    control.Render（新ViewContext（this.ControllerContext，控制，this.ViewData，this.TempData，作家），作家）;    字符串值=（（StringWriter的）writer.InnerWriter）的ToString（）;    返回值;
}
 

In MVC 2 with the regular view engine i could return a ascx partial view as string through return Json()

But with the new Razor .cshtml views I can not figure out how to do this. I keep getting Type 'ASP.CustomerForm_cshtml' does not inherit from 'System.Web.UI.UserControl'.

The partial view inherits from System.Web.Mvc.WebViewPage<T> and another error pops up if I inherit from System.Web.UI.UserControl<T> as the first error says.

Any thoughts on how to fix this using ASP MVC 3 and Razor view engine?

This is my ControlToString function:

    private string ControlToString(string controlPath, object model)
    {
        ViewPage page = new ViewPage();
        ViewUserControl ctl = (ViewUserControl)page.LoadControl(controlPath);
        page.Controls.Add(ctl);
        page.ViewData.Model = model;
        page.ViewContext = new ViewContext();
        System.IO.StringWriter writer = new System.IO.StringWriter();
        System.Web.HttpContext.Current.Server.Execute(page, writer, false);
        string outputToReturn = writer.ToString();
        writer.Close();
        //return this.Json(outputToReturn.Trim());
        return outputToReturn.Trim();
    }

解决方案

This might help you as I've written it off the top of my head without testing it other than to validate it returns the rendered cshtml file.

I assumed this was a method in a Controller.

private string ControlToString(string controlPath, object model) {
    CshtmlView control = new CshtmlView(controlPath);

    HtmlTextWriter writer = new HtmlTextWriter(new System.IO.StringWriter());
    control.Render(new ViewContext(this.ControllerContext, control, this.ViewData, this.TempData, writer), writer);

    string value = ((StringWriter)writer.InnerWriter).ToString();

    return value;
}

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