![](/img/trans.png)
[英]How do I get my IEnumerable<T> extension methods on an IEnumerable?
[英]How do I correctly pass my Ienumerable<> or List<> object to my post action?
我顯然做錯了什么,但我似乎無法弄清楚。 我試圖將對象列表傳遞給我的后動作控制器,但是我得到的對象引用未設置為對象的實例。 我提交表單時出錯。 我使用了提琴手來驗證請求是否確實包含對象,但沒有使它進入后期操作。
我的模特:
public class MakeNbaPickVm
{
public List<NbaGamesForPicksVm> NbaGames { get; set; }
public pick_UserPicks Pick { get; set; }
public bool PickSpreadIsFavAway { get; set; }
public bool PickSpreadIsFavHome { get; set; }
public bool PickSpreadIsDogAway { get; set; }
public bool PickSpreadIsDogHome { get; set; }
public bool OUpickIsOVer { get; set; }
public bool OUpickIsUnder { get; set; }
public decimal LineOdds { get; set; }
public decimal OuOdds { get; set; }
public decimal LineBet { get; set; }
public decimal OuBet { get; set; }
public int MatchId { get; set; }
}
我的視圖顯示正常:
@model IEnumerable<MakeNbaPickVm>
@{
ViewBag.Title = "Make Nba Picks";
}
<h2>Make Nba Picks</h2>
@using(Html.BeginForm("MakeNbaPick", "Picks", FormMethod.Post))
{
<table class="PickTable">
<tr>
<th>Game Date</th>
<th>Away</th>
<th>Away Line</th>
<th>Over/Under</th>
<th>Home</th>
<th>Home Line</th>
<th>O/U Odds</th>
<th>O/U Bet</th>
<th>Line Odds</th>
<th>Line Bet</th>
</tr>
@{
int modLevel = 0;
}
@foreach(var game in Model)
{
foreach (var match in game.NbaGames)
{
@Html.HiddenFor(x => x.ElementAt(modLevel).MatchId, new {@Value =
match.Game.Id})
<tr>
<td>@match.Game.GameDateTime.Value.ToShortDateString()
@match.Game.GameDateTime.Value.ToShortTimeString()
</td>
<td>@match.Away</td>
@if(match.Game.Away == match.Game.FavoriteTeam)
{
<td>
@match.Game.FavoriteSpread<br/> @Html.CheckBoxFor(x =>
x.ElementAt(modLevel)
.PickSpreadIsFavAway)
</td>
}
else
{
<td>
@match.Game.UnderDogSpread<br/> @Html.CheckBoxFor(x =>
x.ElementAt(modLevel)
.PickSpreadIsDogAway)
</td>
}
<td>
@match.Game.OverUnder<br/> Over @Html.CheckBoxFor(x =>
x.ElementAt(modLevel)
.OUpickIsOVer)<br/>
Under @Html.CheckBoxFor(x => x.ElementAt(modLevel)
.OUpickIsUnder)
</td>
<td>@match.Home</td>
@if(match.Game.Home == match.Game.FavoriteTeam)
{
<td>
@match.Game.FavoriteSpread<br/> @Html.CheckBoxFor(x =>
x.ElementAt(modLevel).PickSpreadIsFavHome)
</td>
}
else
{
<td>
@match.Game.UnderDogSpread<br/> @Html.CheckBoxFor(x =>
x.ElementAt(modLevel)
.PickSpreadIsDogHome)
</td>
}
<td>@Html.TextBoxFor(x => x.ElementAt(modLevel).OuOdds,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x.ElementAt(modLevel).OuBet,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x.ElementAt(modLevel).LineOdds,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x.ElementAt(modLevel).LineBet,
new {@class="PickOddsBet"})</td>
</tr>
modLevel++;
}
}
</table>
<input type="submit"/>
}
我的post操作在foreach語句中返回錯誤:
[HttpPost]
public ActionResult MakeNbaPick(List<MakeNbaPickVm> vM)
{
// Save the picks to db
foreach (var pickVm in vM)
{
// code doesn't make it this far
}
return RedirectToAction("Games");
}
為了使模型綁定正確進行,文本框的名稱必須采用正確的格式。
我認為以下是您要查找的內容: 在ASP.NET MVC POST中進行模型綁定IEnumerable?
好的,這是我的問題的解決方案。 ajp,您為我指明了正確的方向。 我必須將List而不是IEnumerable返回到視圖,以便可以訪問index []。 這是我對該視圖的更新代碼:
@model List<MakeNbaPickVm>
@{
ViewBag.Title = "Make Nba Picks";
}
<h2>Make Nba Picks</h2>
@using(Html.BeginForm("MakeNbaPick", "Picks", FormMethod.Post))
{
<table class="PickTable">
<tr>
<th>Game Date</th>
<th>Away</th>
<th>Away Line</th>
<th>Over/Under</th>
<th>Home</th>
<th>Home Line</th>
<th>O/U Odds</th>
<th>O/U Bet</th>
<th>Line Odds</th>
<th>Line Bet</th>
</tr>
@{
int modLevel = 0;
}
@foreach(var game in Model)
{
foreach (var match in game.NbaGames)
{
@Html.HiddenFor(x => x[modLevel].MatchId, new {@Value =
match.Game.Id})
<tr>
<td>@match.Game.GameDateTime.Value.ToShortDateString()
@match.Game.GameDateTime.Value.ToShortTimeString()
</td>
<td>@match.Away</td>
@if(match.Game.Away == match.Game.FavoriteTeam)
{
<td>
@match.Game.FavoriteSpread<br/> @Html.CheckBoxFor(x =>
x[modLevel]
.PickSpreadIsFavAway)
</td>
}
else
{
<td>
@match.Game.UnderDogSpread<br/> @Html.CheckBoxFor(x =>
x[modLevel]
.PickSpreadIsDogAway)
</td>
}
<td>
@match.Game.OverUnder<br/> Over @Html.CheckBoxFor(x =>
x[modLevel]
.OUpickIsOVer)<br/>
Under @Html.CheckBoxFor(x => x[modLevel]
.OUpickIsUnder)
</td>
<td>@match.Home</td>
@if(match.Game.Home == match.Game.FavoriteTeam)
{
<td>
@match.Game.FavoriteSpread<br/> @Html.CheckBoxFor(x =>
x[modLevel].PickSpreadIsFavHome)
</td>
}
else
{
<td>
@match.Game.UnderDogSpread<br/> @Html.CheckBoxFor(x =>
x[modLevel]
.PickSpreadIsDogHome)
</td>
}
<td>@Html.TextBoxFor(x => x[modLevel].OuOdds,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x[modLevel].OuBet,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x[modLevel].LineOdds,
new {@class="PickOddsBet"})</td>
<td>@Html.TextBoxFor(x => x[modLevel].LineBet,
new {@class="PickOddsBet"})</td>
</tr>
modLevel++;
}
}
</table>
<input type="submit"/>
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.