返璞歸真 asp.net mvc (3) - Controller/Action
[索引頁]
[源碼下載]
作者：webabcd
介紹
asp.net mvc 之 Controller 和 Action
示例
1、Controller/Action
ControllerDemoController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using System.IO;
namespace MVC.Controllers
{
/// <summary>
/// Controller 類必須以字符串 "Controller" 做類名稱的結尾，字符串 Controller 之前的字符串為 Controller 的名稱，類中的方法名為 Action 的名稱
/// </summary>
public class ControllerDemoController : Controller
{
// [NonAction] - 當前方法僅為普通方法，不解析為 Action
// [AcceptVerbs(HttpVerbs.Post)] - 聲明 Action 所對應的 http 方法
/// <summary>
/// Action 可以沒有返回值
/// </summary>
public void Void()
{
Response.Write(string.Format("<span style='color: red'>{0}</span>", "void"));
}
/// <summary>
/// 如果 Action 要有返回值的話，其類型必須是 ActionResult
/// EmptyResult - 空結果
/// </summary>
public ActionResult EmptyResult()
{
Response.Write(string.Format("<span style='color: red'>{0}</span>", "EmptyResult"));
return new EmptyResult();
}
/// <summary>
/// Controller.Redirect() - 轉向一個指定的 url 地址
/// 返回類型為 RedirectResult
/// </summary>
public ActionResult RedirectResult()
{
return base.Redirect("~/ControllerDemo/ContentResult");
}
/// <summary>
/// Controller.RedirectToAction() - 轉向到指定的 Action
/// 返回類型為 RedirectToRouteResult
/// </summary>
public ActionResult RedirectToRouteResult()
{
return base.RedirectToAction("ContentResult");
}
/// <summary>
/// Controller.Json() - 將指定的對象以 JSON 格式輸出出來
/// 返回類型為 JsonResult
/// </summary>
public ActionResult JsonResult(string name)
{
System.Threading.Thread.Sleep(1000);
var jsonObj = new { Name = name, Age = new Random().Next(20, 31) };
return base.Json(jsonObj);
}
/// <summary>
/// Controller.JavaScript() - 輸出一段指定的 JavaScript 腳本
/// 返回類型為 JavaScriptResult
/// </summary>
public ActionResult JavaScriptResult()
{
return base.JavaScript("alert('JavaScriptResult')");
}
/// <summary>
/// Controller.Content() - 輸出一段指定的內容
/// 返回類型為 ContentResult
/// </summary>
public ActionResult ContentResult()
{
string contentString = string.Format("<span style='color: red'>{0}</span>", "ContentResult");
return base.Content(contentString);
}
/// <summary>
/// Controller.File() - 輸出一個文件（字節數組）
/// 返回類型為 FileContentResult
/// </summary>
public ActionResult FileContentResult()
{
FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open);
int length = (int)fs.Length;
byte[] buffer = new byte[length];
fs.Read(buffer, 0, length);
fs.Close();
return base.File(buffer, "image/gif");
}
// <summary>
/// Controller.File() - 輸出一個文件（文件地址）
/// 返回類型為 FileContentResult
/// </summary>
public ActionResult FilePathResult()
{
var path = Request.PhysicalApplicationPath + "Content/loading.gif";
return base.File(path, "image/gif");
}
// <summary>
/// Controller.File() - 輸出一個文件（文件流）
/// 返回類型為 FileContentResult
/// </summary>
public ActionResult FileStreamResult()
{
FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open);
return base.File(fs, @"image/gif");
}
/// <summary>
/// HttpUnauthorizedResult - 響應給客戶端錯誤代碼 401（未經授權瀏覽狀態），如果程序啟用了 Forms 驗證，并且客戶端沒有任何身份票據，則會跳轉到指定的登錄頁
/// </summary>
public ActionResult HttpUnauthorizedResult()
{
return new HttpUnauthorizedResult();
}
/// <summary>
/// Controller.PartialView() - 尋找 View ，即 .ascx 文件
/// 返回類型為 PartialViewResult
/// </summary>
public ActionResult PartialViewResult()
{
return base.PartialView();
}
/// <summary>
/// Controller.View() - 尋找 View ，即 .aspx 文件
/// 返回類型為 ViewResult
/// </summary>
public ActionResult ViewResult()
{
// 如果沒有指定 View 名稱，則尋找與 Action 名稱相同的 View
return base.View();
}
/// <summary>
/// 用于演示處理 JSON 的
/// </summary>
public ActionResult JsonDemo()
{
return View();
}
/// <summary>
/// 用于演示上傳文件的
/// </summary>
public ActionResult UploadDemo()
{
return View();
}
/// <summary>
/// 用于演示 Get 方式調用 Action
/// id 是根據路由過來的；param1和param2是根據參數過來的
/// </summary>
[AcceptVerbs(HttpVerbs.Get)]
public ActionResult GetDemo(int id, string param1, string param2)
{
ViewData["ID"] = id;
ViewData["Param1"] = param1;
ViewData["Param2"] = param2;
return View();
}
/// <summary>
/// 用于演示 Post 方式調用 Action
/// </summary>
/// <remarks>
/// 可以為參數添加聲明，如：[Bind(Include = "xxx")] - 只綁定指定的屬性（參數），多個用逗號隔開
/// [Bind(Exclude = "xxx")] - 不綁定指定的屬性（參數），多個用逗號隔開
/// [Bind] 聲明同樣可以作用于 class 上
/// </remarks>
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult PostDemo(FormCollection fc)
{
ViewData["Param1"] = fc["param1"];
ViewData["Param2"] = fc["param2"];
// 也可以用 Request.Form 方式獲取 post 過來的參數
// Request.Form 內的參數也會映射到同名參數。例如，也可用如下方式獲取參數
// public ActionResult PostDemo(string param1, string param2)
return View("GetDemo");
}
/// <summary>
/// 處理上傳文件的 Action
/// </summary>
/// <param name="file1">與傳過來的 file 類型的 input 的 name 相對應</param>
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult UploadFile(HttpPostedFileBase file1)
{
// Request.Files - 獲取需要上傳的文件。當然，其也會自動映射到同名參數
// HttpPostedFileBase hpfb = Request.Files[0] as HttpPostedFileBase;
string targetPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "Upload", Path.GetFileName(file1.FileName));
file1.SaveAs(targetPath);
return View("UploadDemo");
}
}
}
2、Get 方式和 Post 方式調用 Controller 的 Demo
GetDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
GetDemo
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>
GetDemo</h2>
<div>
<%= ViewData["ID"] %></div>
<div>
<%= ViewData["Param1"] %></div>
<div>
<%= ViewData["Param2"] %></div>
<form action="/ControllerDemo/PostDemo" method="post">
<input id="param1" name="param1" />
<input id="param2" name="param2" />
<input type="submit" value="submit" />
</form>
</asp:Content>
3、處理 JSON 的 Demo
JsonDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
JsonDemo
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<script src="http://www.rzrgm.cn/Scripts/jquery-1.3.2.js" type="text/javascript"></script>
<script type="text/javascript">
$.ajaxSetup({
cache: false
});
$(document).ready(
function() {
$('#loading').hide();
$('#btnFind').click(
function(event) {
event.preventDefault();
$('#loading').show();
$.getJSON(
"/ControllerDemo/JsonResult", // 獲取 JSON
{ name: $('#txtName')[0].value },
function(data) {
$('#result').append("name: ");
$('#result').append(data.Name);
$('#result').append(" - ");
$('#result').append("age: ");
$('#result').append(data.Age);
$('#result').append("<br />");
$('#loading').hide();
}
)
}
)
}
)
</script>
<h2>
JsonDemo</h2>
<div style="margin: 20px 0px">
<input id="txtName" value="webabcd" />
<a href="#" id="btnFind">Find</a> <span id="loading" style="border: 1px solid #000000;
background-color: #FFFFCC; vertical-align: middle; padding: 6px">
<img src="http://www.rzrgm.cn/Content/Images/loading.gif" alt="Loading" /> Loading
</span>
<div id="result" style="margin: 10px 0px" />
</div>
</asp:Content>
4、上傳文件的 Demo
UploadDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
UploadDemo
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>
UploadDemo</h2>
<!--action - 調用上傳文件的 Action-->
<form action="/ControllerDemo/UploadFile" method="post" enctype="multipart/form-data">
<input type="file" id="file1" name="file1" />
<input type="submit" id="upload" name="upload" value="上傳" />
</form>
</asp:Content>
OK
[源碼下載]
[源碼下載]
返璞歸真 asp.net mvc (3) - Controller/Action
作者：webabcd
介紹
asp.net mvc 之 Controller 和 Action
- Controller 類必須以字符串 "Controller" 做類名稱的結尾，字符串 Controller 之前的字符串為 Controller 的名稱，類中的方法名為 Action 的名稱
- Action 可以沒有返回值。如果 Action 要有返回值的話，其類型必須是 ActionResult
示例
1、Controller/Action
ControllerDemoController.cs
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using System.Web.Mvc.Ajax;using System.IO;namespace MVC.Controllers{
/// <summary>
/// Controller 類必須以字符串 "Controller" 做類名稱的結尾，字符串 Controller 之前的字符串為 Controller 的名稱，類中的方法名為 Action 的名稱 /// </summary> public class ControllerDemoController : Controller { // [NonAction] - 當前方法僅為普通方法，不解析為 Action // [AcceptVerbs(HttpVerbs.Post)] - 聲明 Action 所對應的 http 方法 /// <summary> /// Action 可以沒有返回值 /// </summary> public void Void() { Response.Write(string.Format("<span style='color: red'>{0}</span>", "void")); } /// <summary> /// 如果 Action 要有返回值的話，其類型必須是 ActionResult /// EmptyResult - 空結果 /// </summary> public ActionResult EmptyResult() { Response.Write(string.Format("<span style='color: red'>{0}</span>", "EmptyResult")); return new EmptyResult(); } /// <summary> /// Controller.Redirect() - 轉向一個指定的 url 地址 /// 返回類型為 RedirectResult /// </summary> public ActionResult RedirectResult() { return base.Redirect("~/ControllerDemo/ContentResult"); } /// <summary> /// Controller.RedirectToAction() - 轉向到指定的 Action /// 返回類型為 RedirectToRouteResult /// </summary> public ActionResult RedirectToRouteResult() { return base.RedirectToAction("ContentResult"); } /// <summary> /// Controller.Json() - 將指定的對象以 JSON 格式輸出出來 /// 返回類型為 JsonResult /// </summary> public ActionResult JsonResult(string name) { System.Threading.Thread.Sleep(1000); var jsonObj = new { Name = name, Age = new Random().Next(20, 31) }; return base.Json(jsonObj); } /// <summary> /// Controller.JavaScript() - 輸出一段指定的 JavaScript 腳本 /// 返回類型為 JavaScriptResult /// </summary> public ActionResult JavaScriptResult() { return base.JavaScript("alert('JavaScriptResult')"); } /// <summary> /// Controller.Content() - 輸出一段指定的內容 /// 返回類型為 ContentResult /// </summary> public ActionResult ContentResult() { string contentString = string.Format("<span style='color: red'>{0}</span>", "ContentResult"); return base.Content(contentString); } /// <summary> /// Controller.File() - 輸出一個文件（字節數組） /// 返回類型為 FileContentResult /// </summary> public ActionResult FileContentResult() { FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open); int length = (int)fs.Length; byte[] buffer = new byte[length]; fs.Read(buffer, 0, length); fs.Close(); return base.File(buffer, "image/gif"); } // <summary> /// Controller.File() - 輸出一個文件（文件地址） /// 返回類型為 FileContentResult /// </summary> public ActionResult FilePathResult() { var path = Request.PhysicalApplicationPath + "Content/loading.gif"; return base.File(path, "image/gif"); } // <summary> /// Controller.File() - 輸出一個文件（文件流） /// 返回類型為 FileContentResult /// </summary> public ActionResult FileStreamResult() { FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open); return base.File(fs, @"image/gif"); } /// <summary> /// HttpUnauthorizedResult - 響應給客戶端錯誤代碼 401（未經授權瀏覽狀態），如果程序啟用了 Forms 驗證，并且客戶端沒有任何身份票據，則會跳轉到指定的登錄頁 /// </summary> public ActionResult HttpUnauthorizedResult() { return new HttpUnauthorizedResult(); } /// <summary> /// Controller.PartialView() - 尋找 View ，即 .ascx 文件 /// 返回類型為 PartialViewResult /// </summary> public ActionResult PartialViewResult() { return base.PartialView(); } /// <summary> /// Controller.View() - 尋找 View ，即 .aspx 文件 /// 返回類型為 ViewResult /// </summary> public ActionResult ViewResult() { // 如果沒有指定 View 名稱，則尋找與 Action 名稱相同的 View return base.View(); } /// <summary> /// 用于演示處理 JSON 的 /// </summary> public ActionResult JsonDemo() { return View(); } /// <summary> /// 用于演示上傳文件的 /// </summary> public ActionResult UploadDemo() { return View(); } /// <summary> /// 用于演示 Get 方式調用 Action /// id 是根據路由過來的；param1和param2是根據參數過來的 /// </summary> [AcceptVerbs(HttpVerbs.Get)] public ActionResult GetDemo(int id, string param1, string param2) { ViewData["ID"] = id; ViewData["Param1"] = param1; ViewData["Param2"] = param2; return View(); } /// <summary> /// 用于演示 Post 方式調用 Action /// </summary> /// <remarks> /// 可以為參數添加聲明，如：[Bind(Include = "xxx")] - 只綁定指定的屬性（參數），多個用逗號隔開 /// [Bind(Exclude = "xxx")] - 不綁定指定的屬性（參數），多個用逗號隔開 /// [Bind] 聲明同樣可以作用于 class 上 /// </remarks> [AcceptVerbs(HttpVerbs.Post)] public ActionResult PostDemo(FormCollection fc) { ViewData["Param1"] = fc["param1"]; ViewData["Param2"] = fc["param2"]; // 也可以用 Request.Form 方式獲取 post 過來的參數 // Request.Form 內的參數也會映射到同名參數。例如，也可用如下方式獲取參數 // public ActionResult PostDemo(string param1, string param2) return View("GetDemo"); } /// <summary> /// 處理上傳文件的 Action /// </summary> /// <param name="file1">與傳過來的 file 類型的 input 的 name 相對應</param> [AcceptVerbs(HttpVerbs.Post)] public ActionResult UploadFile(HttpPostedFileBase file1) { // Request.Files - 獲取需要上傳的文件。當然，其也會自動映射到同名參數 // HttpPostedFileBase hpfb = Request.Files[0] as HttpPostedFileBase; string targetPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "Upload", Path.GetFileName(file1.FileName)); file1.SaveAs(targetPath); return View("UploadDemo"); } }}2、Get 方式和 Post 方式調用 Controller 的 Demo
GetDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %><asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> GetDemo</asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2> GetDemo</h2> <div> <%= ViewData["ID"] %></div> <div> <%= ViewData["Param1"] %></div> <div> <%= ViewData["Param2"] %></div> <form action="/ControllerDemo/PostDemo" method="post"> <input id="param1" name="param1" /> <input id="param2" name="param2" /> <input type="submit" value="submit" /> </form></asp:Content>3、處理 JSON 的 Demo
JsonDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %><asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> JsonDemo</asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <script src="http://www.rzrgm.cn/Scripts/jquery-1.3.2.js" type="text/javascript"></script> <script type="text/javascript"> $.ajaxSetup({ cache: false }); $(document).ready( function() { $('#loading').hide(); $('#btnFind').click( function(event) { event.preventDefault(); $('#loading').show(); $.getJSON( "/ControllerDemo/JsonResult", // 獲取 JSON { name: $('#txtName')[0].value }, function(data) { $('#result').append("name: "); $('#result').append(data.Name); $('#result').append(" - "); $('#result').append("age: "); $('#result').append(data.Age); $('#result').append("<br />"); $('#loading').hide(); } ) } ) } ) </script> <h2> JsonDemo</h2> <div style="margin: 20px 0px"> <input id="txtName" value="webabcd" /> <a href="#" id="btnFind">Find</a> <span id="loading" style="border: 1px solid #000000; background-color: #FFFFCC; vertical-align: middle; padding: 6px"> <img src="http://www.rzrgm.cn/Content/Images/loading.gif" alt="Loading" /> Loading</span> <div id="result" style="margin: 10px 0px" /> </div></asp:Content>4、上傳文件的 Demo
UploadDemo.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %><asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> UploadDemo</asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2> UploadDemo</h2> <!--action - 調用上傳文件的 Action--> <form action="/ControllerDemo/UploadFile" method="post" enctype="multipart/form-data"> <input type="file" id="file1" name="file1" /> <input type="submit" id="upload" name="upload" value="上傳" /> </form></asp:Content>OK
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