对于我的工作，我需要开发一个 Web 应用程序以显示一些银行应用程序的工作列表。实际上，这个应用程序的最大部分已经完成，但我必须包含一个允许选择工作类型的下拉列表。我在这一点上完全受阻。
在我的索引页面上，我有一个列表，其中列出了一些应用程序及其状态（工作 OK、KO、...），用户可以单击应用程序的状态（这是一个图像）以显示另一个页面，其中显示一个更详细的列表，其中包含 2 个参数函数中的一些信息：应用程序和银行 ID。这是我认为的链接：
<a href="@Url.Action("PageDomaines", new { Controller = "Suivi", CR = VarCR, Appli = VarAppli[j] })">
<img src="../../Content/Images/feu_rouge.png" alt="Statut OK" border="0" /></a>
2 个参数 CR 和 Appli 从我的视图传递到 URL 到好的操作，之后，我对它们进行查询以获取列表。
问题是当我在位于操作“PageDomains”视图中的下拉列表中选择一个值时，不会保留参数，显示一个空列表。我已经做了一些测试，比如验证我的下拉列表中选择的值是否发送到我的控制器并且它有效，我可以显示在“PageDomaines”视图中选择的值，但我没有保留我的参数 CR 和 Appli ...
这是我的查询操作“PageDomaines”：
public ActionResult PageDomaines(string CR, string Appli, string DDL)
{
string GetCR = CR;
string GetAppli = Appli;
string GetDDL = DDL;
if (GetDDL == null)
{
var items = GetDomaines();
int Var1 = DateTime.Now.Year;
int Var2 = DateTime.Now.Month;
string Var3 = "" + Var1 + Var2;
var Query = (from i in items
where i.Field<String>("CD_APPLI") == GetAppli && i.Field<String>("CD_CR") == GetCR && i.Field<Int64>("PERIODE").ToString().Contains(Var3)
select new Suivi { CD_TRT = i.Field<String>("CD_TRT"), LB_TRT = i.Field<String>("LB_TRT"), CD_CR = i.Field<String>("CD_CR"), PERIODE = i.Field<Int64>("PERIODE"), CD_APPLI = i.Field<String>("CD_APPLI"), STATUT = i.Field<String>("STATUT") }).ToList();
ViewData["CR"] = GetCR;
ViewData["Appli"] = GetAppli;
return View(Query);
}
else
{
var items = GetDomaines();
int Var1 = DateTime.Now.Year;
int Var2 = DateTime.Now.Month;
string Var3 = "" + Var1 + Var2;
ViewData["DDL"] = GetDDL;
var Query = (from i in items
where i.Field<String>("CD_APPLI") == GetAppli && i.Field<String>("CD_CR") == GetCR && i.Field<Int64>("PERIODE").ToString().Contains(Var3) && i.Field<String>("CD_TRT").Trim() == GetDDL
select new Suivi { CD_TRT = i.Field<String>("CD_TRT"), LB_TRT = i.Field<String>("LB_TRT"), CD_CR = i.Field<String>("CD_CR"), PERIODE = i.Field<Int64>("PERIODE"), CD_APPLI = i.Field<String>("CD_APPLI"), STATUT = i.Field<String>("STATUT") }).ToList();
ViewData["CR"] = GetCR;
ViewData["Appli"] = GetAppli;
return View(Query);
}
}
private List<DataRow> GetDomaines()
{
List<DataRow> liste = null;
string query = "select CD_TRT, LB_TRT, CD_CR, PERIODE, CD_APPLI, case "
+ "when (exists (select 1 from dbo.LOGS l, dbo.REF_JOB j where j.CD_JOB = l.CD_JOB and j.CD_TRT = t.CD_TRT and l.CD_CR = cr.CD_CR and l.STATUT = 'OK' and j.JR_EXEC >= DAY(l.DT_DEB))) "
+ "and not exists (select 1 from dbo.LOGS l, dbo.REF_JOB j where j.CD_JOB = l.CD_JOB and j.CD_TRT = t.CD_TRT and l.CD_CR = cr.CD_CR and l.PERIODE = p.PERIODE "
+ "and ((j.JR_EXEC < DAY(l.DT_DEB) and l.DT_DEB is not null) or (l.STATUT in('KO','NEXEC')))) then 'OK' "
+ "when (exists(select 1 from dbo.LOGS l, dbo.REF_JOB j where j.CD_JOB = l.CD_JOB and j.CD_TRT = t.CD_TRT and l.CD_CR = cr.CD_CR and l.PERIODE = p.PERIODE and j.JR_EXEC < DAY(l.DT_DEB) "
+ "and DAY(l.DT_DEB) IS not null and l.STATUT = 'KO')) then 'KO' "
+ "when (exists(select 1 from dbo.LOGS l, dbo.REF_JOB j where j.CD_JOB = l.CD_JOB and j.CD_TRT = t.CD_TRT and l.CD_CR = cr.CD_CR and l.PERIODE = p.PERIODE "
+ "and j.JR_EXEC < DAY(l.DT_DEB) and DAY(l.DT_DEB) IS not null and l.STATUT in('OK','NEXEC'))) then 'EN COURS' "
+ "when (exists(select 1 from dbo.LOGS l, dbo.REF_JOB j where j.CD_JOB = l.CD_JOB and j.CD_TRT = t.CD_TRT and l.CD_CR = cr.CD_CR and l.PERIODE = p.PERIODE "
+ "and j.JR_EXEC < DAY(l.DT_DEB) and DAY(l.DT_DEB) IS not null)) then 'EN RETARD' else 'NON INITIE' end STATUT "
+ "from dbo.REF_TRT t, dbo.REF_CR cr, (select distinct PERIODE from dbo.LOGS) p ";
string connString = "Data Source=.;Initial Catalog=SUIVI_DWH;Integrated Security=True";
using (SqlConnection conn = new SqlConnection(connString))
{
using (SqlCommand objCommand = new SqlCommand(query, conn))
{
objCommand.CommandType = CommandType.Text;
DataTable dt = new DataTable();
SqlDataAdapter adp = new SqlDataAdapter(objCommand);
conn.Open();
adp.Fill(dt);
if (dt != null)
{
liste = dt.AsEnumerable().ToList();
}
}
}
return liste;
}
private List<DataRow> GetPERIODE()
{
List<DataRow> liste = null;
string query = "select distinct PERIODE from dbo.LOGS";
string connString = "Data Source=.;Initial Catalog=SUIVI_DWH;Integrated Security=True";
using (SqlConnection conn = new SqlConnection(connString))
{
using (SqlCommand objCommand = new SqlCommand(query, conn))
{
objCommand.CommandType = CommandType.Text;
DataTable dt = new DataTable();
SqlDataAdapter adp = new SqlDataAdapter(objCommand);
conn.Open();
adp.Fill(dt);
if (dt != null)
{
liste = dt.AsEnumerable().ToList();
}
}
}
return liste;
}
以及“PageDomaines”的观点：
@model IEnumerable<SUIVI_DWH.Models.Suivi>
@using SUIVI_DWH.Helpers
@{
ViewBag.Title = "PageDomaines";
}
<h2>@ViewData["CR"]
@ViewData["Appli"]
@ViewData["DDL"]
</h2>
@using (Html.BeginForm("PageDomaines", "Suivi"))
{
@Html.DropDownList("DDL", new SelectList(new[] { "MMCR", "MMCL", "MMCO", "MMSE", "MMAS" }), "--Select one--", new { onchange = "this.form.submit();" })
}
<table>
<tr>
<th>
CD_TRT
</th>
<th>
LB_TRT
</th>
<th>
PERIODE
</th>
<th>
STATUT
</th>
</tr>
@foreach (var item in Model)
{
<tr>
<td>
@item.CD_TRT
</td>
<td>
@item.LB_TRT
</td>
<td>
@item.PERIODE
</td>
<td>
@if (item.STATUT == null)
{
<img src="../../Content/Images/feu_croix.png" alt="Statut null" />
}
else if (item.STATUT == "KO")
{
<a href="@Url.Action("PageLogs", new { Controller = "Suivi", CR = ViewData["CR"], Appli = ViewData["Appli"], TRT = item.CD_TRT, PERIODE = item.PERIODE })">
<img src="../../Content/Images/feu_rouge.png" alt="Statut KO" border="0" /></a>
}
else if (item.STATUT == "OK")
{
<a href="@Url.Action("PageLogs", new { Controller = "Suivi", CR = ViewData["CR"], Appli = ViewData["Appli"], TRT = item.CD_TRT, PERIODE = item.PERIODE })">
<img src="../../Content/Images/feu_vert.png" alt="Statut OK" border="0" /></a>
}
else if (item.STATUT == "EN RETARD")
{
<a href="@Url.Action("PageLogs", new { Controller = "Suivi", CR = ViewData["CR"], Appli = ViewData["Appli"], TRT = item.CD_TRT, PERIODE = item.PERIODE })">
<img src="../../Content/Images/feu_orange.png" alt="Statut en retard" border="0" /></a>
}
else if (item.STATUT == "NON INITIE")
{
<a href="@Url.Action("PageLogs", new { Controller = "Suivi", CR = ViewData["CR"], Appli = ViewData["Appli"], TRT = item.CD_TRT, PERIODE = item.PERIODE })">
<img src="../../Content/Images/feu_blanc.png" alt="Statut non initié" border="0" /></a>
}
else if (item.STATUT == "EN COURS")
{
<a href="@Url.Action("PageLogs", new { Controller = "Suivi", CR = ViewData["CR"], Appli = ViewData["Appli"], TRT = item.CD_TRT, PERIODE = item.PERIODE })">
<img src="../../Content/Images/feu_jaune.png" alt="Statut en cours" border="0" /></a>
}
</td>
</tr>
}
</table>
我希望我没有忘记任何东西。
你有什么建议来解决这个问题吗？