View with complex view model
I am using ASP.NET MVC 3 and I have a view model as follows:
public class RegistrationViewModel
{
public IList<LicenseViewModel> Licenses { get; set; }
}
public class LicenseViewModel
{
开发者_如何学Python public string LicensedState { get; set; }
public string LicenseType { get; set; }
}
A user can be licensed in multiple states and both the LicensedState and LicenseType values should be presented as dropdowns on the footer of a grid. How can I create a view with the RegistrationViewModel?
The Model
public class RegistrationViewModel
{
public IList<LicenseViewModel> Licenses { get; set; }
}
public class LicenseViewModel
{
public string LicensedState { get; set; }
public string LicenseType { get; set; }
public IEnumerable<LicenseState> LicenseStates { get; set; }
public IEnumerable<LicenseType> LicenseTypes { get; set; }
}
The View
@model RegistrationViewModel
@foreach (var item in Model)
{
@Html.DropDownListFor(model => model.LicensedState, new SelectList(item.LicenseStates, item.LicenseState))
@Html.DropDownListFor(model => model.LicenseType, new SelectList(item.LicenseTypes, item.LicenseType))
}
You can have your view model like this:
public class LicenseViewModel
{
public IEnumerable<SelectListItem> LicensedState { get; private set; }
public IEnumerable<SelectListItem> LicenseType { get; private set; }
public LicenseViewModel(string licensedState = null, string licenseType = null)
{
LicensedState = LicensedStatesProvider.All().Select(s=> new SelectListItem
{Selected = licensedState!= null && s == licensedState, Text = s, Value = s} );
LicenseType = LicenseTypesProvider.All().Select(t => new SelectListItem
{ Selected = licenseType != null && t == licenseType, Text = t, Value = t });
}
}
LicensedStatesProvider
and LicenseTypesProvider
are simply way of getting all LicensedStates and LicenseTypes, it's up to you how to get them.
And in view, you'd have something like this:
@foreach (var license in Model.Licenses)
{
//other stuff...
@Html.DropDownList("LicensedState", license.LicensedState)
@Html.DropDownList("LicenseType", license.LicenseType)
}
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