'索引超出了阵列'MVC的范围

Question

我是目前正在开发我的最后一年项目的最后一年学生，并遇到了一个我迄今无法弄清楚的问题。我试图在MyRosters视图中显示与团队ID列表相关的名单，但每当我尝试运行代码时，我得到一个'索引超出了数组的界限'错误。请问有人可以帮帮我吗？

下面是ActionResult：

    public ActionResult MyRosters()
    {
        string ClubName = Session["TeamName"].ToString();
        var teams = db.Teams.Where(x => x.TeamName.Contains(ClubName) || ClubName == null).ToList();
        int[] TeamID = new int[] { };
        int i = 0;
        foreach (Team t in teams)
        {
            TeamID[i] = t.TeamID;
            i++;
        }
        return View(db.Rosters.Where(x => x.TeamID.Equals(TeamID) || ClubName == null).ToList());
    }

以下是MyRosters视图：

    @model MunsterAdministrator.Models.Roster

    @{
        ViewBag.Title = "MyRosters";
    }

    <h2>MyRosters</h2>

    <table class="table table-condensed">
<tr>
    <th>
        @Html.DisplayNameFor(model => model.Team.TeamName)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Fixture.FixtureID)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player1)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player2)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player3)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player4)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player5)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.Player6)
    </th>
</tr>

@foreach (var item in Model)
{
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Team.TeamName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Fixture.FixtureID)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player1)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player2)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player3)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player4)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player5)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player6)
        </td>
    </tr>
    <tr>
        <td></td>
        <td></td>
        <td>
            @Html.DisplayFor(modelItem => item.Player7)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player8)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player9)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player10)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player11)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player12)
        </td>
    </tr>
    <tr>
        <td></td>
        <td></td>
        <td>
            @Html.DisplayFor(modelItem => item.Player13)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player14)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player15)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player16)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player17)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Player18)
        </td>
    </tr>
    <tr>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id = item.RosterID })
        </td>
        <td>
            @Html.ActionLink("Details", "Details", new { id = item.RosterID })
        </td>
        <td>
            @Html.ActionLink("Delete", "Delete", new { id = item.RosterID })
        </td>
    </tr>
}

如果您提前感谢，我们将非常感谢您给予我的任何帮助！

Answer 1

你的数组没有元素，你不能为它的第0个元素赋值。用这个

int[] TeamID = teams.Select(b=>b.TeamID).toArray();

相反

int[] TeamID = new int[] { };
int i = 0;
foreach (Team t in teams)
{
    TeamID[i] = t.TeamID;
    i++;
}