6.2ActionResult的使用

ActionResult

public abstract class ActionResult
{
public abstract void ExecuteResult(ControllerContextcontext);
}

命令模式
容器对象

ActionResult的重载
-EmptyResult                        没有任何匹配和执行
-ContentResult                     输出纯文本  AJAX
-JsonResult                         
-RedirectResult
-RedirectToRouteResult
-ViewResult
-PartialViewResult
-FileResult                            －File操作   FilePathResult  FileContentResult FileStreamResult
-FileContentResult
-FileStreamResult
-JavaScriptResult

JsonResult
public ActionResultPartialJson()
{
varcategory = new ProductCategory{ Name=”Partial”};
varresult = new {
Name = category.Name,
ProductCount= category.Products.Count};
return Json(result);
}

JavaScriptResult
public ActionResultDoSomething() {
script s = “$(‘#some-div’).html(‘Updated!’);”
;return JavaScript(s);
}
<%: Ajax.ActionLink(“click”, “DoSomething”, new AjaxOptions()) %>
<div id=”some-div”></div>

RedirectResult
自动跳转

RedirectToRouteResult
－RedirectToRoute
－RedirectToAction

ViewResult和PartialViewResult
使用字典类返回结果


Action Result Helper函数
输出结果帮助函数


方法 描述   
Redirect   
RedirectToAction   
RedirectToRoute   
View   
PartialView   
Content   
File   
Json   
JavaScript

隐式调用Action Results
public double Distance(int x1, int y1, int x2, int y2)
{
double xSquared= Math.Pow(x2 -x1, 2);
double ySquared= Math.Pow(y2 -y1, 2);
return Math.Sqrt(xSquared+ ySquared);
}
public ActionResultDistance(intx1, inty1, intx2, inty2)
{
double xSquared= Math.Pow(x2 -x1, 2);
double ySquared= Math.Pow(y2 -y1, 2);
double distance = Math.Sqrt(xSquared+ ySquared);
return Content(distance.ToString(CultureInfo.InvariantCulture));
}

2011-4-17 16:16 danny