javascript - C# MVC 4 在 Controller 中使用 Javascript 调用 Void

Question

我对 MVC4 学习了几周了，我想问如何从 View 调用 Public Void 到 Controller 并最好的调用程序是什么？使用JavaScript？或Html.Action？

这是我在操作 Controller 中的代码:

[HttpPost]
[AcceptVerbs(HttpVerbs.Post)]
public static string SearchAd(string LoginName = "")
{
    string x = "Not Found";
    DirectoryEntry directoryEntry = new DirectoryEntry("LDAP://lbcone");
    DirectorySearcher directorySearcher = new DirectorySearcher(directoryEntry);
    directorySearcher.Filter = string.Format("(&(SAMAccountName={0}))", LoginName);
    var user = directorySearcher.FindOne();
    if (user != null)
    {
        x = "Found";
    }
    return x;
}

这是我的 Javascript 代码，它有一个错误:

<script type='text/javascript'>
    function SetValue(ctl, event) {
        event.preventDefault();
        var LoginName = document.getElementById('_LoginName').value;
        var x = SearchAd(LoginName);
        alert(x);
    }
</script>

这是我的“查看”按钮:

button type="button" onclick="SetValue();">

Answer 1

这样就可以正常工作:

[HttpPost]
[AcceptVerbs(HttpVerbs.Post)]
public static ActionResult SearchAd(string LoginName = "")
{
    string x = "Not Found";
    DirectoryEntry directoryEntry = new DirectoryEntry("LDAP://lbcone");
    DirectorySearcher directorySearcher = new DirectorySearcher(directoryEntry);
    directorySearcher.Filter = string.Format("(&(SAMAccountName={0}))", LoginName);

    var user = directorySearcher.FindOne();
    if (user != null)
    {
        x = "Found";
    }
    return Json(x, JsonRequestBehavior.DenyGet);

}

用于调用此操作方法的 JQuery 脚本:

        var LoginName = document.getElementById('_LoginName').value;
        var requestData = {
             LoginName :LoginName 
            };

        $.ajax({
         url: '/ControllerName/SearchAd',
         type: 'POST',
         data: JSON.stringify(requestData),
         dataType: 'json',
         contentType: 'application/json; charset=utf-8',
         error: function (xhr) {
            alert('Error: ' + xhr.statusText);
         },
         success: function (result) {
            alert(result);
         },
         async: true,
         processData: false
      });