问题:只要有相同的“计划”,SQL中的行之一就会被复制到网页上
我尝试检查该语句的Where和OrderBy,以查看这是否影响重复的原因。我不确定为什么OrderBy会创建重复项。我已经尝试过使用多个用户,并且当他们具有相同的计划时,行为是一致的。
示例如下:
代码(.cs):
var someVariable = DbContext.DbSet<>.Where(
m =>
m.Some_ID == CurrentlyEditingSomeID
).AsQueryable().OrderByDescending(m => m.Start_Date);
这引用了.aspx页中的ListView,其中包含以下各项:
<td style="width: 20%;"><%# Item.Plan %></td>
<td style="width: 20%;"><%# Item.Start_Date.ToSafeShortDate() %></td>
<td style="width: 20%;"><%# Item.End_Date.ToSafeShortDate() %></td>
LINQ查询中的输出:
SELECT
[Project1].[Field1] AS [Field1],
[Project1].[Field2] AS [Field2],
FROM ( SELECT
[Extent1].[Field1] AS [Field1],
[Extent1].[Field2] AS [Field2],
FROM (SELECT
[VIEW].[Field1] AS [Field1],
[VIEW].[Field2] AS [Field2],
FROM [mWeb].[VIEW] AS [VIEW]) AS [Extent1]
WHERE [Extent1].[Some_ID] = @p__linq__0
) AS [Project1]
ORDER BY [Project1].[Start_Date] DESC
(。aspx文件的较长版本):
<asp:ListView ID="lstPlanE" runat="server" ItemPlaceholderID="litPlanEPlaceHolder"
ItemType="Project.Data.view" SelectMethod="lstPlanE_GetData">
<EmptyDataTemplate>
<div class="alert alert-danger" role="alert">Nothing found</div>
</EmptyDataTemplate>
<LayoutTemplate>
<div class="table-responsive">
<table class="table">
<thead>
<tr>
<th style="width: 20%;">G</th>
<th style="width: 20%;">G ID</th>
<th style="width: 20%;">Plan</th>
<th style="width: 20%;">Start Date</th>
<th style="width: 20%;">End Date</th>
</tr>
</thead>
<asp:Literal ID="litPlanEPlaceHolder" runat="server" />
</table>
</div>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td style="width: 20%;"><%# Item.G_Description %></td>
<% if (isAAA()) %>
<% { %>
<td><%# Item.AAA_G_ID %></td>
<% } %>
<% else %>
<% { %>
<td><%# Item.G_ID %></td>
<% } %>
<td style="width: 20%;"><%# Item.Plan %></td>
<td style="width: 20%;"><%# Item.Start_Date.ToSafeShortDate() %></td>
<td style="width: 20%;"><%# Item.End_Date.ToSafeShortDate() %></td>
</tr>
</ItemTemplate>
</asp:ListView>
(。cs文件中方法的较长版本):
public IQueryable<MediView.Data.vx_EligibilitySearch> lstPlanE_GetData()
{
try
{
if (isAAA())
{
var someVariable = DbContext.DbSet<>.Where(
m =>
m.Other_ID == CurrentlyEditingOtherID &&
m.Some_Seq == CurrentlyEditingSomeSeqID
).AsQueryable();
return someVariable;
}
else
{
var someVariable = DbContext.DbSet<>.Where(
m =>
m.Some_ID == CurrentlyEditingSomeID
).AsQueryable().OrderByDescending(m => m.Start_Date);
return someVariable;
}
}
catch (Exception ex)
{
ErrorSignal.FromCurrentContext().Raise(ex);
}
return null;
}
public bool isAAA() // Determines if Site is CCC or Other
{
bool isSiteCCC = false;
String browserTab = Properties.Settings.Default.BrowserTab.Trim(); // Gets Site Name from Settings file
if (browserTab.Equals("Some Site Name")) { isSiteCCC = true; }
return isSiteAAA;
}
答案 0 :(得分:0)
我做出的两项更改已解决:在OrderBy中从“开始日期”更改为“结束日期”。 还将其更改为AsNoTracking。
经过测试,唯一真正起作用的是AsNoTracking()方法。
也许有人可以解释为什么这样做?
else
{
var someVariable = DbContext.DbSet<>.AsNoTracking().Where(
m =>
m.Some_ID == CurrentlyEditingSomeID
).AsQueryable().OrderByDescending(m => m.End_Date);
return someVariable;
}