渲染一些查看字符串，並通過Json發送

Question

我需要渲染一些查看到字符串中，並通過Json發送它。 示例。

 [HttpPost] 
     public ActionResult GetTreeUnit(string id) 
     { 
      int _id = id.ExtractID(); 
      string render =""; 

      // render = GetStringView("SomeView"); 

      return Json(new { data = render }); 
     } 

Answer 1

我所創造的解決方案。它是將視圖渲染成字符串的擴展。

public static class RenderPartialToStringExtensions 
{ 
    /// <summary> 
    /// render PartialView and return string 
    /// </summary> 
    /// <param name="context"></param> 
    /// <param name="partialViewName"></param> 
    /// <param name="model"></param> 
    /// <returns></returns> 
    public static string RenderPartialToString(this ControllerContext context, string partialViewName, object model) 
    { 
     return RenderPartialToStringMethod(context, partialViewName, model); 
    } 

    /// <summary> 
    /// render PartialView and return string 
    /// </summary> 
    /// <param name="context"></param> 
    /// <param name="partialViewName"></param> 
    /// <param name="viewData"></param> 
    /// <param name="tempData"></param> 
    /// <returns></returns> 
    public static string RenderPartialToString(ControllerContext context, string partialViewName, ViewDataDictionary viewData, TempDataDictionary tempData) 
    { 
     return RenderPartialToStringMethod(context, partialViewName, viewData, tempData); 
    } 

    public static string RenderPartialToStringMethod(ControllerContext context, string partialViewName, ViewDataDictionary viewData, TempDataDictionary tempData) 
    { 
     ViewEngineResult result = ViewEngines.Engines.FindPartialView(context, partialViewName); 

     if (result.View != null) 
     { 
      StringBuilder sb = new StringBuilder(); 
      using (StringWriter sw = new StringWriter(sb)) 
      { 
       using (HtmlTextWriter output = new HtmlTextWriter(sw)) 
       { 
        ViewContext viewContext = new ViewContext(context, result.View, viewData, tempData, output); 
        result.View.Render(viewContext, output); 
       } 
      } 

      return sb.ToString(); 
     } 
     return String.Empty; 
    } 

    public static string RenderPartialToStringMethod(ControllerContext context, string partialViewName, object model) 
    { 
     ViewDataDictionary viewData = new ViewDataDictionary(model); 
     TempDataDictionary tempData = new TempDataDictionary(); 
     return RenderPartialToStringMethod(context, partialViewName, viewData, tempData); 
    } 
} 

而且比我們在行動渲染視圖

[HttpPost] 
public ActionResult GetTreeUnit(string id) 
{ 
    int _id = id.ExtractID(); 
    string render = ControllerContext.RenderPartialToString("SomeView"); 
    return Json(new { data = render }); 
} 

Answer 2

如果要返回已由視圖渲染的數據，請將控制器更改爲返回部分視圖。這篇文章是相關的：asp.net MVC partial view controller action

Answer 3

呈現的字符串是DOM對象，所以只是將其追加到HMTL元素，你要爲我的問題

$.ajax({ 
    url: "Controller\GetTreeUnit" 
    data: "id=3", 
    type: "POST", 
    success: function(result){ 
     $("#content").append(result); 
    } 

}); 

<div id="content"> 
</div>