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最近在工作中用到了在ASP.NET MVC中以post方式傳遞數組參數的情況，記錄下來，以供參考。
一、準備參數對象在本例中，我會傳遞兩個數組參數：一個字串數組，一個自訂對象數組。這個自訂對象UserInfo定義如下：
public class UserInfo { public int UserId { get; set; } public string UserName { get; set; } } 二、後台代碼
後台Action代碼如下：
[HttpPost] public ActionResult TestPost(List<string> a, UserInfo[] b) { var result = new {IsSuccess = true, ErrMsg = "你錯了"}; return Json(result, JsonRequestBehavior.AllowGet); }
其中List或數組方式對前端代碼寫法都一樣。
三、前端代碼前端jquery調用代碼如下：
<html><head> <meta name="viewport" content="width=device-width" /> <title>Index</title> <script src="~/Scripts/jquery-1.8.2.min.js"></script> <script type="text/javascript"> $(function() { $(‘#btnTest‘).click(function() { var data = {}; data["a[0]"] = "Test"; data["a[1]"] = "Just"; data["b[0].UserId"] = 1; data["b[0].UserName"] = "Zhang"; data["b[1].UserName"] = "黃Sir"; $.post(‘@Url.Action("TestPost")‘, data, function(res) { alert(‘Result: ‘ + res.IsSuccess + ‘, Error: ‘ + res.ErrMsg); }); }); }); </script></head><body> <div> <input type="button" id="btnTest" value="測試"/> </div></body></html> 四、總結
在ASP.NET MVC中以post方式傳遞數組參數的關鍵在於json對象的寫法，這裡總結一下：
先定義Null 物件：var data = {};
針對List<string>、List<int>等簡單類型，data["a[0]"] = "dd"; data["a[1]"] = "d2"; ....
針對複雜類型，如List<UserInfo>, UserInfo[]，data["b[0].UserId"] = 1; ....
在ASP.NET MVC中以post方式傳遞數組參數的樣本
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