本文介绍了一个使用ASP.NET MVC框架的示例控制器，该控制器负责处理三栏布局模板的请求并将其渲染为文件输出。文章详细展示了如何通过GetThreeColomnTemplate方法获取视图模型并返回视图，以及如何通过GetThreeColomnTemplateAsFile方法将视图渲染为字符串再转换为文件。
public class TemplateController : Controller
{
public ActionResult GetThreeColomnTemplate(SettingViewModel model)
{
...
return View("ThreeColomn",model);
}
public ActionResult GetThreeColomnTemplateAsFile(SettingViewModel model)
{
SettingViewModel model = ...
ViewEngineResult result = ViewEngines.Engines.FindView(this.ControllerContext, "ThreeColomn", "_Layout");
string htmlTextView = GetViewToString(this.ControllerContext, result, model);
byte[] toBytes = Encoding.Unicode.GetBytes(htmlTextView);
return File(toBytes, "application/file","template.html");
}
private string GetViewToString(ControllerContext context, ViewEngineResult result, object model)
{
string viewResult = "";
var viewData = ViewData;
viewData.Model = model;
TempDataDictionary tempData = new TempDataDictionary();
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);
}
viewResult = sb.ToString();
}
return viewResult;
}
}
Note: This only example. I advise to put GetViewToString into in a separate class.
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