我正在使用实体框架LINQ来显示部门，处理和检查信息。每个部门都有多个流程，每个流程都可以进行多次检查。我希望以一种方式来处理数据，即部门将仅针对多个流程显示一次，并且每个流程检查都应显示在流程前面。
以下是示例。
[WebMethod]
// [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public string GetDataEntryList(int companyId)
{
VisioneEntities vEntity = new VisioneEntities();
var retValue =
(from dept in vEntity.Departments
join prooo in vEntity.Processes on dept.DepartmentId equals prooo.DepartmentId
select new
{
DepartmentId = dept.DepartmentId,
DepartmentName = dept.DepartmentName,
DataEntryProcessInfoView = (from pro in vEntity.Processes
where pro.DepartmentId == dept.DepartmentId
select new DataEntryProcessInfo()
{
ProcessId = pro.ProcessID,
ProcessName = pro.ProcessName,
DataEntryCheckInfos = from chk in vEntity.ProcessChecks
where chk.ProcessId == prooo.ProcessID
select new DataEntryCheckInfo() { CheckId = chk.CheckId, CheckName = chk.CheckName, Frequency = chk.Frequency }
}
)
}).AsEnumerable().Select(x => new DataEntryInfoView() { DepartmentId = x.DepartmentId, DepartmentName = x.DepartmentName, DataEntryProcessInfos = x.DataEntryProcessInfoView });
//var filterItems=from ret in retValue
// select new {r1=ret.DepartmentId,r2=ret.DataEntryProcessInfos.Select
var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
var json = serializer.Serialize(retValue.AsEnumerable());
return json;
}
以下是我使用的课程。
public class DataEntryInfoView
{
public int DepartmentId { get; set; }
public string DepartmentName { get; set; }
public DataEntryCheckInfo checkInfo;
public IQueryable<DataEntryProcessInfo> DataEntryProcessInfos;
}
public class DataEntryCheckInfo
{
public int CheckId { get; set; }
public string CheckName { get; set; }
public string Frequency { get; set; }
}
public class DataEntryProcessInfo
{
public int ProcessId { get; set; }
public string ProcessName { get; set; }
public IQueryable<DataEntryCheckInfo> DataEntryCheckInfos;
}
这是我不希望dipslay那些没有DataEntryCheckInfo为空的记录的结果
以下是我得到的结果
{"d":"[{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[{\"CheckId\":21,\"CheckName\":\"Fahad \",\"Frequency\":\"Weekly\"},{\"CheckId\":22,\"CheckName\":\"Fahad \",\"Frequency\":\"Weekly\"},{\"CheckId\":63,\"CheckName\":\"Check Test\",\"Frequency\":\"Fortnightly\"}],\"ProcessId\":7,\"ProcessName\":\"Process 1\"}],\"DepartmentId\":2,\"DepartmentName\":\"Dept 2\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[{\"CheckId\":86,\"CheckName\":\"afdassd \",\"Frequency\":\"Yearly\"}],\"ProcessId\":8,\"ProcessName\":\"Wasqur Process\"}],\"DepartmentId\":7,\"DepartmentName\":\"Dept 6\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[{\"CheckId\":65,\"CheckName\":\"New Check \",\"Frequency\":\"Weekly\"},{\"CheckId\":66,\"CheckName\":\"abc \",\"Frequency\":\"Monthly\"},{\"CheckId\":67,\"CheckName\":\"2333 \",\"Frequency\":\"Weekly\"},{\"CheckId\":84,\"CheckName\":\"adafdasdfs\",\"Frequency\":\"Fortnightly\"},{\"CheckId\":85,\"CheckName\":\"Test check\",\"Frequency\":\"Fortnightly\"}],\"ProcessId\":9,\"ProcessName\":\"Process 2 Wasqur\"},{\"DataEntryCheckInfos\":[{\"CheckId\":65,\"CheckName\":\"New Check \",\"Frequency\":\"Weekly\"},{\"CheckId\":66,\"CheckName\":\"abc \",\"Frequency\":\"Monthly\"},{\"CheckId\":67,\"CheckName\":\"2333 \",\"Frequency\":\"Weekly\"},{\"CheckId\":84,\"CheckName\":\"adafdasdfs\",\"Frequency\":\"Fortnightly\"},{\"CheckId\":85,\"CheckName\":\"Test check\",\"Frequency\":\"Fortnightly\"}],\"ProcessId\":14,\"ProcessName\":\"My New Procees\"}],\"DepartmentId\":8,\"DepartmentName\":\"Dept 7\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[{\"CheckId\":68,\"CheckName\":\"CHeck 1 \",\"Frequency\":\"Weekly\"},{\"CheckId\":73,\"CheckName\":\"New Check \",\"Frequency\":\"Fortnightly\"},{\"CheckId\":74,\"CheckName\":\"Checker \",\"Frequency\":\"Weekly\"},{\"CheckId\":77,\"CheckName\":\"Wasi \",\"Frequency\":\"Weekly\"}],\"ProcessId\":10,\"ProcessName\":\"My New Process\"},{\"DataEntryCheckInfos\":[{\"CheckId\":68,\"CheckName\":\"CHeck 1 \",\"Frequency\":\"Weekly\"},{\"CheckId\":73,\"CheckName\":\"New Check \",\"Frequency\":\"Fortnightly\"},{\"CheckId\":74,\"CheckName\":\"Checker \",\"Frequency\":\"Weekly\"},{\"CheckId\":77,\"CheckName\":\"Wasi \",\"Frequency\":\"Weekly\"}],\"ProcessId\":12,\"ProcessName\":\"Tes\"}],\"DepartmentId\":13,\"DepartmentName\":\"Dept 11\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[],\"ProcessId\":11,\"ProcessName\":\"222\"}],\"DepartmentId\":15,\"DepartmentName\":\"Dept 13\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[],\"ProcessId\":10,\"ProcessName\":\"My New Process\"},{\"DataEntryCheckInfos\":[],\"ProcessId\":12,\"ProcessName\":\"Tes\"}],\"DepartmentId\":13,\"DepartmentName\":\"Dept 11\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[],\"ProcessId\":13,\"ProcessName\":\"33\"}],\"DepartmentId\":14,\"DepartmentName\":\"Dept 12\"},{\"DataEntryProcessInfos\":[{\"DataEntryCheckInfos\":[],\"ProcessId\":9,\"ProcessName\":\"Process 2 Wasqur\"},{\"DataEntryCheckInfos\":[],\"ProcessId\":14,\"ProcessName\":\"My New Procees\"}],\"DepartmentId\":8,\"DepartmentName\":\"Dept 7\"}]"}
更多的事情，如果你可以帮助我，我想使用Jquery模板绑定这些数据，但我不想使用嵌套表，因为它会为流体模板创建问题以及标题将无法正确显示。这是我在上述问题中的模板。
<tr>
<td>
<div class="btn-group row-fluid" style="margin-top: 4px">
<button class="btn">
${DepartmentId}</button>
<button class="btn btn-success">
${DepartmentName}</button></div>
</td>
<td colspan="4">
<table class="table table-striped table-bordered dataTable" border="0" cellspancing="0"
cellpadding="0" style="width: 100%">
{{each DataEntryProcessInfos}}<tr>
<td style="width: 20%">
<div class="btn-group row-fluid" style="margin-top: 4px">
<button class="btn">
${ProcessId}</button>
<button class="btn btn-warning">
${ProcessName}</button></div>
</td>
<td style="width: 60%">
<table style="width: 100%" class="table table-striped table-bordered dataTable">
{{each DataEntryCheckInfos}}<tr>
<td style="width: 33%">
<div class="btn-group row-fluid" style="margin-top: 4px">
<button class="btn">
${CheckId}</button>
<button class="btn btn-danger">
${CheckName}</button></div>
</td>
<td style="width: 33%">
<button class="btn">
${Frequency}
</button>
</td>
<td style="width: 33%">
<a class="btn-link" href="CheckItems.aspx?checkId=${CheckId}&mode=entry">Action
</a>
</td>
</tr>
{{/each}}
</table>
</td>
</tr>
{{/each}}
</table>
</td>
</tr>
答案 0 :(得分：0)
嵌套对象永远不会为空。他们是IEnumerable。但我认为你想要嵌套集合不为空的项目：
retvalue = retvalue.Where(x => x.DataEntryProcessInfoView.Any(
y => y.DataEntryCheckInfos.Any());
其中retvalue是AsEnumerable().Select(x => new DataEntryInfoView()...之前的部分。