我有一个接受对象的 ASP.NET MVC 3 控制器操作,如下所示:
//// model.ReferenceNumber equals "-1"
public ActionResult EditApplication(EditApplicationViewModel model)
{
if (!ModelState.IsValid)
{
...
}
// Existing Applicant
model.ReferenceNumber = "";
var msg = this.RenderPartialViewToString("_ExistingApplication", model);
}
当收到请求时,“model.ReferenceNumber”等于“-1”。即使将模型上的属性设置为空字符串“”,“RenderPartialViewToString”的结果仍然会在“输入”HTML 字段的“值”属性中显示“-1”的值。
知道为什么会这样吗?
这是用于渲染局部视图的代码: http: //craftycodeblog.com/2010/05/15/asp-net-mvc-render-partial-view-to-string/
public static string RenderPartialViewToString(this Controller controller, string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
viewName = controller.ControllerContext.RouteData.GetRequiredString("action");
controller.ViewData.Model = model;
using (var sw = new StringWriter())
{
var viewResult = ViewEngines.Engines.FindPartialView(controller.ControllerContext, viewName);
var viewContext = new ViewContext(controller.ControllerContext, viewResult.View, controller.ViewData, controller.TempData, sw);
viewResult.View.Render(viewContext, sw);
return sw.GetStringBuilder().ToString();
}
}
谢谢