C# MVC Html.CheckBoxFor not binding to model
Question
I'm having a frustrating issue where I can't seem to get the Model binding to work with CheckBoxFor when posting back to the controller. My model just returns back null. Any help would be appreciated!
View
@model IEnumerable<FFR.Context.Matchup>
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>View1</title>
</head>
<body>
<p>
@Html.ActionLink("Create New", "Create")
</p>
@using (Html.BeginForm(Html.BeginForm("Submit", "Matchups", FormMethod.Post)))
{
@foreach (var item in Model) {
<tr>
<td>@Html.CheckBoxFor(modelItem => item.isChecked)</td>
<td>
@Html.DisplayFor(modelItem => item.MatchupDate)
</td>
<td>
@Html.DisplayFor(modelItem => item.Spread)
</td>
<td>
@Html.DisplayFor(modelItem => item.HomeScore)
</td>
<td>
@Html.DisplayFor(modelItem => item.AwayScore)
</td>
}
<tr><td><input type="submit" value="Submit" /></td></tr>
</table>
}
</body>
</html>
Controller
[HttpPost]
public ActionResult Submit(IEnumerable<Matchup> model)
{
//processing
}
Model
public partial class Matchup
{
public Matchup()
{
this.Bets = new HashSet<Bet>();
}
public int MatchupId { get; set; }
public int HomeTeamId { get; set; }
public int AwayTeamId { get; set; }
public int LocationId { get; set; }
public System.DateTime MatchupDate { get; set; }
public int WeekId { get; set; }
public int SeasonId { get; set; }
public Nullable<decimal> Spread { get; set; }
public Nullable<decimal> HomeScore { get; set; }
public Nullable<decimal> AwayScore { get; set; }
public string TimeLeft { get; set; }
public Nullable<System.DateTime> LastUpdate { get; set; }
public Boolean isChecked { get; set; }
}
2 answers
solution1
4 ACCPTED
You need to use a for loop so that your controls are correctly names with indexers. Change the model to @model IList<FFR.Context.Matchup> and then in the view
for(int i = 0; i < Model.Count; i++)
{
@Html.CheckBoxFor(m => m[i].isChecked)
....
}
If you cannot use IList then you can use a custom EditorTemplate for your model ( refer this example )
Side note: Why would you use Layout = null; and render the head in the view (as opposed to specifying a layout)?
solution2
0 2015-01-22 11:03:08
Hope this link will give you an insight on how the model binding works with the list. http://haacked.com/archive/2008/10/23/model-binding-to-a-list.aspx/
Please note you are doing too many things in the view. Try to use editor templates for the simpler views.
Also i notice 2 calls for Begin form. Do you really intend to use like that?
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.