Asp.net e、 GetListSourceFieldValue在CustomUnboundColumnData事件处理程序中返回null
我正在ASP.NET MVC 4项目中使用DevExpress控件 我正在ASP.NET MVC的Asp.net e、 GetListSourceFieldValue在CustomUnboundColumnData事件处理程序中返回null,asp.net,asp.net-mvc,devexpress,Asp.net,Asp.net Mvc,Devexpress,我正在ASP.NET MVC 4项目中使用DevExpress控件 我正在ASP.NET MVC的GridView扩展中使用未绑定的列。在CustomUnboundColumnData事件处理程序中,e.GetListSourceFieldValue始终为我返回null 然后,我尝试直接从模型中获取值,而不是调用此方法(请参见方法调用上方的注释行),但即使这样做有效,它也有副作用,我现在不想讨论 我正在使用ASP.NET MVC 4和Visual Web Developer Express 20
GridView
扩展中使用未绑定的列。在CustomUnboundColumnData
事件处理程序中,e.GetListSourceFieldValue
始终为我返回null
然后,我尝试直接从模型中获取值,而不是调用此方法(请参见方法调用上方的注释行),但即使这样做有效,它也有副作用,我现在不想讨论
我正在使用ASP.NET MVC 4和Visual Web Developer Express 2010版。我正在为MVC v12.2.10.0使用DevExpress扩展
我的操作系统是Windows7,64位。但是,我使用的扩展仅为32位
我无法发布整个解决方案,因为它被分解为多个项目,其中大多数项目都有我为我的客户编写的大量IP代码。但以下是我代码中的相关部分
Index.cshtml(Razor视图引擎)
-------------------------------------------------------------------
@model List<GlobalizationUI.Presentation.ViewModels.StringTableRow>
@{
ViewBag.Title = "Strings";
}
<div id = "pageCaption">Strings</div>
@Html.Partial("_StringsPartial", Model)
@using System.Web.UI.WebControls;
@using System.Data;
@model List<GlobalizationUI.Presentation.ViewModels.StringTableRow>
@Html.DevExpress().GridView(settings =>
{
settings.Name = "gvStrings";
settings.CallbackRouteValues = new { Controller = "Strings", Action = "StringsPartial" };
settings.Width = 1200;
settings.SettingsPager.Position = PagerPosition.TopAndBottom;
settings.SettingsPager.FirstPageButton.Visible = true;
settings.SettingsPager.LastPageButton.Visible = true;
settings.SettingsPager.PageSizeItemSettings.Visible = true;
settings.SettingsPager.PageSizeItemSettings.Items = new string[] { "10", "20", "50", "100", "200" };
settings.SettingsPager.PageSize = 50;
settings.Settings.ShowFilterRow = true;
settings.Settings.ShowFilterRowMenu = true;
settings.CommandColumn.Visible = true;
settings.CommandColumn.ClearFilterButton.Visible = true;
settings.Settings.ShowHeaderFilterButton = true;
settings.KeyFieldName = "ResourceKeyId";
settings.Columns.Add("Key");
var categoryColumn = settings.Columns.Add("CategoryId", "Category");
categoryColumn.ColumnType = MVCxGridViewColumnType.ComboBox;
var categoryColumnEditProperties = categoryColumn.PropertiesEdit as ComboBoxProperties;
categoryColumnEditProperties.DataSource = ViewBag.AllCategories;
categoryColumnEditProperties.TextField = "Name";
categoryColumnEditProperties.ValueField = "Id";
categoryColumnEditProperties.ValueType = typeof(long);
if (Model != null && Model.Count > 0 &&
Model[0] != null && Model[0].StringValues != null && Model[0].StringValues.Count > 0)
{
foreach (var kvp in Model[0].StringValues)
{
settings.Columns.Add(col =>
{
col.FieldName = kvp.CultureShortName;
col.Caption = kvp.CultureShortName;
col.UnboundType = DevExpress.Data.UnboundColumnType.Object;
col.SetDataItemTemplateContent(container => { ViewContext.Writer.Write(DataBinder.Eval(container.DataItem, col.FieldName + ".StringValue")); });
col.SetEditItemTemplateContent(container =>
{
Html.DevExpress().TextBox(s =>
{
s.Name = string.Format("txt{0}", kvp.CultureShortName);
}).Bind(kvp.StringValue).Render();
});
});
}
}
settings.CustomUnboundColumnData = (sender, e) =>
{
var fixedColumns = new List<string> { "ResourceKeyId", "Key", "CategoryId" };
if (!fixedColumns.Contains(e.Column.FieldName))
{
if (e.IsGetData)
{
try
{
// var values = Model[e.ListSourceRowIndex].StringValues;
var values = e.GetListSourceFieldValue(e.ListSourceRowIndex, "StringValues") as IList<GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue>;
if (values != null)
{
var value = values.FirstOrDefault(pair => pair.CultureShortName == e.Column.FieldName);
var defaultValue = default(GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue);
e.Value = value.Equals(defaultValue) ? defaultValue : new GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue();
}
}
catch (Exception ex)
{
System.Diagnostics.Debugger.Break();
System.Diagnostics.Debug.Print(ex.ToString());
}
}
}
};
foreach (GridViewDataColumn column in settings.Columns)
{
column.Settings.HeaderFilterMode = HeaderFilterMode.CheckedList;
}
settings.SettingsEditing.AddNewRowRouteValues = new { Controller = "Strings", Action = "CreateNew" };
settings.SettingsEditing.UpdateRowRouteValues = new { Controller = "Strings", Action = "Edit" };
settings.SettingsEditing.DeleteRowRouteValues = new { Controller = "Strings", Action = "Delete" };
settings.SettingsEditing.Mode = GridViewEditingMode.Inline;
settings.SettingsBehavior.ConfirmDelete = true;
settings.CommandColumn.Visible = true;
settings.CommandColumn.NewButton.Visible = true;
settings.CommandColumn.EditButton.Visible = true;
settings.CommandColumn.UpdateButton.Visible = true;
settings.CommandColumn.DeleteButton.Visible = true;
}).Bind(Model).GetHtml()
using System.Data;
using System.Web.Mvc;
using GlobalizationUI.BusinessObjects;
using Resources.BaseServices.Caching;
using System.Collections.Generic;
using System.ComponentModel;
using GlobalizationUI.Presentation.ViewModels;
using Resources.Util;
namespace GlobalizationUI.Presentation.Controllers
{
public class StringsController : Controller
{
private static string CacheKey_StringTable = "CacheKey_StringTable";
private static string CacheKey_AllCategories = "CacheKey_AllCategories";
private static object padLock = new object();
public ActionResult Index()
{
var stringTable = GetStringTable();
ViewBag.AllCategories = GetCategoryList();
return View(stringTable);
}
public ActionResult StringsPartial()
{
var stringTable = GetStringTable();
ViewBag.AllCategories = GetCategoryList();
return PartialView("_StringsPartial", stringTable);
}
[HttpPost]
public ActionResult CreateNew(StringTableRow row)
{
System.Diagnostics.Debugger.Break();
foreach (PropertyDescriptor prop in TypeDescriptor.GetProperties(row))
{
System.Diagnostics.Debug.Print(prop.Name);
}
return Content("Hello, there!");
}
[HttpPost]
public ActionResult Edit(DataRow row)
{
return new EmptyResult();
}
[HttpPost]
public ActionResult Delete(long resourceKeyId)
{
return new EmptyResult();
}
private IEnumerable<Category> GetCategoryList()
{
lock (padLock)
{
if (CacheManager.Contains(CacheKey_AllCategories))
{
return CacheManager.Get<IEnumerable<Category>>(CacheKey_AllCategories);
}
}
var list = Category.All;
lock (padLock)
{
CacheManager.Add(CacheKey_AllCategories, list);
}
return list;
}
private List<StringTableRow> GetStringTable()
{
List<StringTableRow> stringTable;
lock (padLock)
{
if (CacheManager.Contains(CacheKey_StringTable))
{
return CacheManager.Get<List<StringTableRow>>(CacheKey_StringTable);
}
}
stringTable = new StringTable().ToListOfStringTableRows();
lock (padLock)
{
CacheManager.Add(CacheKey_StringTable, stringTable);
}
return stringTable;
}
}
}
using System.Collections.Generic;
namespace GlobalizationUI.Presentation.ViewModels
{
public class StringTableRow
{
public long ResourceKeyId { get; set; }
public string Key { get; set; }
public long CategoryId { get; set; }
public List<CultureNameAndStringValue> StringValues { get; set; }
}
}
namespace GlobalizationUI.Presentation.ViewModels
{
public class CultureNameAndStringValue
{
public CultureNameAndStringValue() : this(null, null) { }
public CultureNameAndStringValue(string cultureShortName, string stringValue)
{
CultureShortName = cultureShortName;
StringValue = stringValue;
}
public string CultureShortName { get; set; }
public string StringValue { get; set; }
}
}
using System.Data;
using GlobalizationUI.Data;
namespace GlobalizationUI.BusinessObjects
{
public class StringTable : DataTable
{
public StringTable()
{
var sql = @"
declare @stmt nvarchar(max)
select @stmt =
isnull(@stmt + ', ', '') +
'max(case when s.CultureId = ' + cast(c.Id as nvarchar(max)) +
' then s.ResourceValue end) as ' + quotename(c.ShortName)
from Culture as c
where c.Supported = 1
select @stmt = '
select
rk.Id AS ResourceKeyId,
rk.Name AS [Key],
c.Id AS CategoryId,
c.Name as CategoryName, ' + @stmt + '
from StringCategory as sc
LEFT OUTER join Category as c on c.Id = sc.CategoryId
RIGHT OUTER JOIN ResourceKey as rk on rk.Id = sc.ResourceKeyId
inner join Strings as s on s.ResourceKeyId = rk.Id
group by rk.Id, rk.Name, c.Id, c.Name
'
exec sp_executesql @stmt = @stmt;";
this.Merge(Database.DefaultDatabase.GetDataTable(sql));
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlTypes;
namespace GlobalizationUI.Presentation.ViewModels
{
public static class DataTableExtensions
{
public static List<StringTableRow> ToListOfStringTableRows(this DataTable dataTable)
{
var ret = new List<StringTableRow>();
if (dataTable == null || dataTable.Rows.Count == 0) return ret;
foreach (DataRow row in dataTable.Rows)
{
StringTableRow stringTableRow = new StringTableRow();
foreach (DataColumn column in dataTable.Columns)
{
if (string.Compare(column.ColumnName, "ResourceKeyId", true) == 0)
{
stringTableRow.ResourceKeyId = (long)row[column.ColumnName];
}
else if (string.Compare(column.ColumnName, "Key", true) == 0)
{
stringTableRow.Key = (string)row[column.ColumnName];
}
else if (string.Compare(column.ColumnName, "CategoryId", true) == 0)
{
var categoryId = row[column.ColumnName];
stringTableRow.CategoryId = categoryId == DBNull.Value ? 0 : (long)categoryId;
}
else if (string.Compare(column.ColumnName, "CategoryName", true) == 0)
{
continue;
}
else
{
if (stringTableRow.StringValues == null)
stringTableRow.StringValues = new List<CultureNameAndStringValue>();
stringTableRow.StringValues.Add(new CultureNameAndStringValue(column.ColumnName, (string)row[column.ColumnName]));
}
}
ret.Add(stringTableRow);
}
return ret;
}
}
}
模型到视图模型转换:
-------------------------------------------------------------------
@model List<GlobalizationUI.Presentation.ViewModels.StringTableRow>
@{
ViewBag.Title = "Strings";
}
<div id = "pageCaption">Strings</div>
@Html.Partial("_StringsPartial", Model)
@using System.Web.UI.WebControls;
@using System.Data;
@model List<GlobalizationUI.Presentation.ViewModels.StringTableRow>
@Html.DevExpress().GridView(settings =>
{
settings.Name = "gvStrings";
settings.CallbackRouteValues = new { Controller = "Strings", Action = "StringsPartial" };
settings.Width = 1200;
settings.SettingsPager.Position = PagerPosition.TopAndBottom;
settings.SettingsPager.FirstPageButton.Visible = true;
settings.SettingsPager.LastPageButton.Visible = true;
settings.SettingsPager.PageSizeItemSettings.Visible = true;
settings.SettingsPager.PageSizeItemSettings.Items = new string[] { "10", "20", "50", "100", "200" };
settings.SettingsPager.PageSize = 50;
settings.Settings.ShowFilterRow = true;
settings.Settings.ShowFilterRowMenu = true;
settings.CommandColumn.Visible = true;
settings.CommandColumn.ClearFilterButton.Visible = true;
settings.Settings.ShowHeaderFilterButton = true;
settings.KeyFieldName = "ResourceKeyId";
settings.Columns.Add("Key");
var categoryColumn = settings.Columns.Add("CategoryId", "Category");
categoryColumn.ColumnType = MVCxGridViewColumnType.ComboBox;
var categoryColumnEditProperties = categoryColumn.PropertiesEdit as ComboBoxProperties;
categoryColumnEditProperties.DataSource = ViewBag.AllCategories;
categoryColumnEditProperties.TextField = "Name";
categoryColumnEditProperties.ValueField = "Id";
categoryColumnEditProperties.ValueType = typeof(long);
if (Model != null && Model.Count > 0 &&
Model[0] != null && Model[0].StringValues != null && Model[0].StringValues.Count > 0)
{
foreach (var kvp in Model[0].StringValues)
{
settings.Columns.Add(col =>
{
col.FieldName = kvp.CultureShortName;
col.Caption = kvp.CultureShortName;
col.UnboundType = DevExpress.Data.UnboundColumnType.Object;
col.SetDataItemTemplateContent(container => { ViewContext.Writer.Write(DataBinder.Eval(container.DataItem, col.FieldName + ".StringValue")); });
col.SetEditItemTemplateContent(container =>
{
Html.DevExpress().TextBox(s =>
{
s.Name = string.Format("txt{0}", kvp.CultureShortName);
}).Bind(kvp.StringValue).Render();
});
});
}
}
settings.CustomUnboundColumnData = (sender, e) =>
{
var fixedColumns = new List<string> { "ResourceKeyId", "Key", "CategoryId" };
if (!fixedColumns.Contains(e.Column.FieldName))
{
if (e.IsGetData)
{
try
{
// var values = Model[e.ListSourceRowIndex].StringValues;
var values = e.GetListSourceFieldValue(e.ListSourceRowIndex, "StringValues") as IList<GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue>;
if (values != null)
{
var value = values.FirstOrDefault(pair => pair.CultureShortName == e.Column.FieldName);
var defaultValue = default(GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue);
e.Value = value.Equals(defaultValue) ? defaultValue : new GlobalizationUI.Presentation.ViewModels.CultureNameAndStringValue();
}
}
catch (Exception ex)
{
System.Diagnostics.Debugger.Break();
System.Diagnostics.Debug.Print(ex.ToString());
}
}
}
};
foreach (GridViewDataColumn column in settings.Columns)
{
column.Settings.HeaderFilterMode = HeaderFilterMode.CheckedList;
}
settings.SettingsEditing.AddNewRowRouteValues = new { Controller = "Strings", Action = "CreateNew" };
settings.SettingsEditing.UpdateRowRouteValues = new { Controller = "Strings", Action = "Edit" };
settings.SettingsEditing.DeleteRowRouteValues = new { Controller = "Strings", Action = "Delete" };
settings.SettingsEditing.Mode = GridViewEditingMode.Inline;
settings.SettingsBehavior.ConfirmDelete = true;
settings.CommandColumn.Visible = true;
settings.CommandColumn.NewButton.Visible = true;
settings.CommandColumn.EditButton.Visible = true;
settings.CommandColumn.UpdateButton.Visible = true;
settings.CommandColumn.DeleteButton.Visible = true;
}).Bind(Model).GetHtml()
using System.Data;
using System.Web.Mvc;
using GlobalizationUI.BusinessObjects;
using Resources.BaseServices.Caching;
using System.Collections.Generic;
using System.ComponentModel;
using GlobalizationUI.Presentation.ViewModels;
using Resources.Util;
namespace GlobalizationUI.Presentation.Controllers
{
public class StringsController : Controller
{
private static string CacheKey_StringTable = "CacheKey_StringTable";
private static string CacheKey_AllCategories = "CacheKey_AllCategories";
private static object padLock = new object();
public ActionResult Index()
{
var stringTable = GetStringTable();
ViewBag.AllCategories = GetCategoryList();
return View(stringTable);
}
public ActionResult StringsPartial()
{
var stringTable = GetStringTable();
ViewBag.AllCategories = GetCategoryList();
return PartialView("_StringsPartial", stringTable);
}
[HttpPost]
public ActionResult CreateNew(StringTableRow row)
{
System.Diagnostics.Debugger.Break();
foreach (PropertyDescriptor prop in TypeDescriptor.GetProperties(row))
{
System.Diagnostics.Debug.Print(prop.Name);
}
return Content("Hello, there!");
}
[HttpPost]
public ActionResult Edit(DataRow row)
{
return new EmptyResult();
}
[HttpPost]
public ActionResult Delete(long resourceKeyId)
{
return new EmptyResult();
}
private IEnumerable<Category> GetCategoryList()
{
lock (padLock)
{
if (CacheManager.Contains(CacheKey_AllCategories))
{
return CacheManager.Get<IEnumerable<Category>>(CacheKey_AllCategories);
}
}
var list = Category.All;
lock (padLock)
{
CacheManager.Add(CacheKey_AllCategories, list);
}
return list;
}
private List<StringTableRow> GetStringTable()
{
List<StringTableRow> stringTable;
lock (padLock)
{
if (CacheManager.Contains(CacheKey_StringTable))
{
return CacheManager.Get<List<StringTableRow>>(CacheKey_StringTable);
}
}
stringTable = new StringTable().ToListOfStringTableRows();
lock (padLock)
{
CacheManager.Add(CacheKey_StringTable, stringTable);
}
return stringTable;
}
}
}
using System.Collections.Generic;
namespace GlobalizationUI.Presentation.ViewModels
{
public class StringTableRow
{
public long ResourceKeyId { get; set; }
public string Key { get; set; }
public long CategoryId { get; set; }
public List<CultureNameAndStringValue> StringValues { get; set; }
}
}
namespace GlobalizationUI.Presentation.ViewModels
{
public class CultureNameAndStringValue
{
public CultureNameAndStringValue() : this(null, null) { }
public CultureNameAndStringValue(string cultureShortName, string stringValue)
{
CultureShortName = cultureShortName;
StringValue = stringValue;
}
public string CultureShortName { get; set; }
public string StringValue { get; set; }
}
}
using System.Data;
using GlobalizationUI.Data;
namespace GlobalizationUI.BusinessObjects
{
public class StringTable : DataTable
{
public StringTable()
{
var sql = @"
declare @stmt nvarchar(max)
select @stmt =
isnull(@stmt + ', ', '') +
'max(case when s.CultureId = ' + cast(c.Id as nvarchar(max)) +
' then s.ResourceValue end) as ' + quotename(c.ShortName)
from Culture as c
where c.Supported = 1
select @stmt = '
select
rk.Id AS ResourceKeyId,
rk.Name AS [Key],
c.Id AS CategoryId,
c.Name as CategoryName, ' + @stmt + '
from StringCategory as sc
LEFT OUTER join Category as c on c.Id = sc.CategoryId
RIGHT OUTER JOIN ResourceKey as rk on rk.Id = sc.ResourceKeyId
inner join Strings as s on s.ResourceKeyId = rk.Id
group by rk.Id, rk.Name, c.Id, c.Name
'
exec sp_executesql @stmt = @stmt;";
this.Merge(Database.DefaultDatabase.GetDataTable(sql));
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlTypes;
namespace GlobalizationUI.Presentation.ViewModels
{
public static class DataTableExtensions
{
public static List<StringTableRow> ToListOfStringTableRows(this DataTable dataTable)
{
var ret = new List<StringTableRow>();
if (dataTable == null || dataTable.Rows.Count == 0) return ret;
foreach (DataRow row in dataTable.Rows)
{
StringTableRow stringTableRow = new StringTableRow();
foreach (DataColumn column in dataTable.Columns)
{
if (string.Compare(column.ColumnName, "ResourceKeyId", true) == 0)
{
stringTableRow.ResourceKeyId = (long)row[column.ColumnName];
}
else if (string.Compare(column.ColumnName, "Key", true) == 0)
{
stringTableRow.Key = (string)row[column.ColumnName];
}
else if (string.Compare(column.ColumnName, "CategoryId", true) == 0)
{
var categoryId = row[column.ColumnName];
stringTableRow.CategoryId = categoryId == DBNull.Value ? 0 : (long)categoryId;
}
else if (string.Compare(column.ColumnName, "CategoryName", true) == 0)
{
continue;
}
else
{
if (stringTableRow.StringValues == null)
stringTableRow.StringValues = new List<CultureNameAndStringValue>();
stringTableRow.StringValues.Add(new CultureNameAndStringValue(column.ColumnName, (string)row[column.ColumnName]));
}
}
ret.Add(stringTableRow);
}
return ret;
}
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Web;
使用系统数据;
使用System.Data.SqlTypes;
命名空间GlobalizationUI.Presentation.ViewModels
{
公共静态类DataTableExtensions
{
公共静态列表ToListOfStringTableRows(此数据表)
{
var ret=新列表();
if(dataTable==null | | dataTable.Rows.Count==0)返回ret;
foreach(dataTable.Rows中的DataRow行)
{
StringTableRow StringTableRow=新建StringTableRow();
foreach(dataTable.Columns中的DataColumn列)
{
if(string.Compare(column.ColumnName,“ResourceKeyId”,true)==0)
{
stringTableRow.ResourceKeyId=(长)行[column.ColumnName];
}
else if(string.Compare(column.ColumnName,“Key”,true)==0)
{
stringTableRow.Key=(字符串)行[column.ColumnName];
}
else if(string.Compare(column.ColumnName,“CategoryId”,true)==0)
{
var categoryId=行[column.ColumnName];
stringTableRow.CategoryId=CategoryId==DBNull.Value?0:(长)CategoryId;
}
else if(string.Compare(column.ColumnName,“CategoryName”,true)==0)
{
继续;
}
其他的
{
if(stringTableRow.StringValues==null)
stringTableRow.StringValues=新列表();
stringTableRow.StringValues.Add(新的CultureNameAndStringValue(column.ColumnName,(string)行[column.ColumnName]);
}
}
ret.Add(stringTableRow);
}
返回ret;
}
}
}
用户界面应该看起来有点像上图所示。SQL查询返回的列数是可变的,具体取决于特定安装/部署/业务客户端支持的区域性数。因此需要使用未绑定的列
我不是通过这段代码拍摄这张照片,而是通过将数据直接绑定到System.data.DataTable
并没有使用任何未绑定列时代码的旧版本拍摄的。在我不得不在MVC/服务器端编辑操作中的数据之前,一切都很好。因此,我从使用DataTable
切换到POCO,并对所有区域性使用未绑定列
请帮忙。好的,虽然我在大约2小时前才发布了这个问题,但我已经有8个多小时的时间遇到这个问题了,并且一直在尝试各种方法来解决这个问题 刚才,我所做的一件事解决了这个问题。给你 如果要将ASP.NET MVC的DevExpress
GridViewExtension
绑定到像我这样的自定义POCO,并且POCO有一个或多个成员是任何类型的集合,那么,您必须并且绝对必须在POCO的构造函数中初始化表示集合的属性
例如,在我的例子中,模型是一个StringTableRow
的列表,其中StringTableRow
是一个POCO
在StringTableRow
类中,我有一个名为StringValues
的属性,它的类型是IList
,它是一个集合。因此,为了使代码正常工作,我在StringTableRow
类的构造中初始化了StringValues
属性,一切都开始工作
using System.Collections.Generic;
namespace GlobalizationUI.Presentation.ViewModels
{
public class StringTableRow
{
public StringTableRow()
{
// I added this ctor and initialized the
// StringValues property and the broken
// custom binding to unbound columns started
// to work.
StringValues = new List<CultureNameAndStringValue>();
}
public long ResourceKeyId { get; set; }
public string Key { get; set; }
public long CategoryId { get; set; }
public IList<CultureNameAndStringValue> StringValues { get; set; }
}
}
使用System.Collections.Generic;
命名空间GlobalizationUI.Presentation.ViewModels
{
公共类StringTableRow
{
公共列表行()
{
//我添加了这个ctor并初始化了
//StringValues属性和断开的
//已启动对未绑定列的自定义绑定
//工作。
StringValues=新列表();
}
公共长ResourceKeyId{get;set;}
公共字符串密钥{get;set;}
公共长类别ID{get;set;}
公共IList字符串值{get;set;}
}
}
我们遇到了完全相同的问题,按照您的示例,结果是使用列表而不是IList只返回null。@TimS,非常感谢您的评论!仅仅读了这一句话就结束了我调试这个“总是空的”问题长达两天的痛苦!为什么类声明中的列表
超过IList
会产生这样的差异,