C# - Bind A Checkbox List To A Model Or Array Of Data

Feb 3, 2011

I am looking here to find a quick and easy way to bind a list of checkbox list items when the postback occurs in the model. Apparently the common way to do it now seems to do it like this form.GetValues("checkboxList")[0].Contains("true"); It seems painfull and not exactly safe. Is there a way to bind a list of checkbox (that are created with or without an helper in the view) or even an array of data for that matters during the UpdateModel(myViewModel, form.ToValueProvider()); phase which would populate an IList<string> or string[] inside of the model ?

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MVC :: Bind A Checkbox List To A Model

Feb 3, 2011

I am trying here to find a simple solution to bind an array of elements to a model using the MVC model binder. If I use the @Html.Checkbox helper now, it will generate me something like this :

[Code]....

I should be ok as it manage the checked in state and not checked in. The problem here is when I try to bind it back to the model (something really simple)

[Code]....

In the controller I try to bind it with the UpdateModel()

[Code]....

When I debug, the chk variable in the model is still null. I tried with IList<string>, bool[], IList<bool> nothing seems to make it. Is there any other way to deal with this else than form.GetValues("chk")[0].Contains("true") ?

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Feb 16, 2010

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protected void dlBreeds_ItemDataBound(object sender, DataListItemEventArgs e)
{
try
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
CheckBoxList cbl = e.Item.FindControl("cblAnimaltype") as CheckBoxList;
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//*********************************************************************************
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// Inputs : Nothing
// Returns : Nothing
//*********************************************************************************
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try
{
ds = InvertebrateProviders.GetBreedsName_Invertebrate(1);
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<asp:DataList id="dlBreeds" runat="server" DataKeyField="BGName" OnItemDataBound="dlBreeds_ItemDataBound" RepeatDirection="Vertical">
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OnSelectedIndexChanged="cblAnimaltype_SelectedIndexChanged" Width="200px" >
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<asp:CheckBoxList ID="cblBreeds" Height="90px" Width="200px" runat="server" ></asp:CheckBoxList>
</ItemTemplate>
</asp:DataList>

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[code]....

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If
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[HttpPost]
[ValidateAntiForgeryToken]
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[Code]....

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Line73: <tr>
Line 74: <td style="width: 100px; height: 24px">
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Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

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[code]....

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[Code]....

The Code behind is

[Code]....

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EDIT

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I want the dropdownlist to display FirstName, but the value has to be the logins. I'm fairly certain that is possible, although I have no idea how it can be done.

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[Code]....

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[Code]....

[Code]....

[Code]....

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[Code]....

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[code]...

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[Code]....

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