问题很简单,但我似乎无法解决它。我正在使用带有DevExpress组合框的Razor引擎。
我有这段代码:
MODEL:
public class TestModel
{
public string Name { get; set; }
public List<Role> Roles { get; set; }
}
public class Role
{
public int RoleId { get; set; }
public string RoleName { get; set; }
}
CONTROLLER
public ActionResult OpenTest()
{
TestModel tm = new TestModel( );
tm.Roles = new List<Role>( );
tm.Roles.Add( new Role( ) { RoleId = 1, RoleName = "Role 1" } );
tm.Roles.Add( new Role( ) { RoleId = 2, RoleName = "Role 2" } );
tm.Roles.Add( new Role( ) { RoleId = 3, RoleName = "Role 3" } );
return View( tm );
}
在这里,我可以成功打开视图,数据显示正常:
查看
@model TestDx.Models.TestModel
@{
ViewBag.Title = "OpenTest";
}
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
@using ( Html.BeginForm( ) )
{
@Html.DevExpress( ).ComboBox(
settings =>
{
settings.Name = "TestDx.Models.TestModel.Roles";
settings.Width = 120;
settings.SelectedIndex = 0;
settings.Properties.DropDownWidth = 300;
settings.Properties.DropDownStyle = DevExpress.Web.ASPxEditors.DropDownStyle.DropDownList;
settings.Properties.EnableCallbackMode = false;
settings.Properties.CallbackPageSize = 30;
settings.Properties.IncrementalFilteringMode = DevExpress.Web.ASPxEditors.IncrementalFilteringMode.StartsWith;
settings.Properties.TextFormatString = "{0}";
settings.Properties.ValueField = "RoleID";
settings.Properties.ValueType = typeof( int );
settings.Properties.Columns.Add( "RoleID", "RoleID", 10 );
settings.Properties.Columns.Add( "RoleName", "RoleName", 100 );
} ).BindList( Model.Roles ).GetHtml( )
<br />
@Html.DevExpress().Button(
settings =>
{
settings.Name = "btnSave";
settings.ClientEnabled = true;
settings.ControlStyle.CssClass = "button";
settings.ClientVisible = true;
settings.Text = "save";
settings.UseSubmitBehavior = true;
settings.ControlStyle.Font.Bold = true;
}).GetHtml()
}
现在所有这一切都很简单,而且我没有做任何事情,只是出差。但是当我单击Save按钮时,我会回到控制器,这个方法:
[HttpPost]
public ActionResult OpenTest( [ModelBinder( typeof( DevExpressEditorsBinder ) )]TestModel model )
{
if ( ModelState.IsValid )
{
//
}
return View( model );
}
...而且这里的模型是空的,Roles属性是0.我不明白为什么会这样?事件组合框名称与它绑定的属性相同,我确信使用推荐的DevExpress活页夹。
感谢。
答案 0 :(得分:0)
ComboBox的名称列出了类型定义。因为您传入 TestModel 作为类型,所以ComboBox的名称应该是应该保存角色ID的属性。所以绑定器试图填充 model.TestDx.Models.TestModel.Roles 但是找不到该字段,因此没有任何东西被填满。如果查看formCollection对象,您应该看到带有值的ComboBox。
更好的解决方案是在 TestModel 中指定 RoleID ,并将ComboBox命名为 RoleID 。在这种情况下,RoleID应自动填写您的保存。或者,您可以在视图中指定“绑定”字段,例如:
@Html.DevExpress( ).ComboBox(
settings =>
{
settings.Name = "TestDx.Models.TestModel.Roles";
settings.Width = 120;
settings.SelectedIndex = 0;
settings.Properties.DropDownWidth = 300;
settings.Properties.DropDownStyle = DevExpress.Web.ASPxEditors.DropDownStyle.DropDownList;
settings.Properties.EnableCallbackMode = false;
settings.Properties.CallbackPageSize = 30;
settings.Properties.IncrementalFilteringMode = DevExpress.Web.ASPxEditors.IncrementalFilteringMode.StartsWith;
settings.Properties.TextFormatString = "{0}";
settings.Properties.ValueField = "RoleID";
settings.Properties.ValueType = typeof( int );
settings.Properties.Columns.Add( "RoleID", "RoleID", 10 );
settings.Properties.Columns.Add( "RoleName", "RoleName", 100 );
} ).BindList( Model.Roles )
.Bind(model.RoleID).GetHtml( )
这可能适用于您的绑定。
答案 1 :(得分:0)
该模型未受约束。您的RoleID名称属性必须与Roles [listIndex] .RoleID不同。
要将列表绑定到模型中,输入名称应为ListPropName[listIndex].PropNameInsideList