C# 具有复杂视图模型的视图

我使用的是ASP.NET MVC 3，我的视图模型如下：

public class RegistrationViewModel
{
    public IList<LicenseViewModel> Licenses { get; set; }
}  

public class LicenseViewModel
{
    public string LicensedState { get; set; }
    public string LicenseType { get; set; }
}

公共类注册视图模型
{
公共IList许可证{get；set；}
}  
公共类LicenseViewModel
{
公共字符串LicensedState{get；set；}
公共字符串LicenseType{get；set；}
}

---

一个用户可以在多个状态下获得许可，并且LicensedState和LicenseType值应在网格的页脚上显示为下拉列表。如何使用RegistrationViewModel创建视图

您可以使用如下视图模型：

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 });
  }
}

@foreach (var license in Model.Licenses)
{
  //other stuff...  
  @Html.DropDownList("LicensedState", license.LicensedState)
  @Html.DropDownList("LicenseType", license.LicenseType)
}

---

您可以使用如下视图模型：

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 });
  }
}

@foreach (var license in Model.Licenses)
{
  //other stuff...  
  @Html.DropDownList("LicensedState", license.LicensedState)
  @Html.DropDownList("LicenseType", license.LicenseType)
}

模型

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; }
}

模型

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; }
}