C# 当模型不返回任何数据时，如何在MVC4中显示视图中的消息？
嗨，我正在开发应用程序，我有5个文本框和搜索按钮。当我在文本框中输入数据并单击搜索时，对应的数据库匹配数据将显示在下表中。我已经实现了分页，它工作得很好。下面是代码C# 当模型不返回任何数据时，如何在MVC4中显示视图中的消息？,c#,asp.net-mvc-4,C#,Asp.net Mvc 4,嗨，我正在开发应用程序，我有5个文本框和搜索按钮。当我在文本框中输入数据并单击搜索时，对应的数据库匹配数据将显示在下表中。我已经实现了分页，它工作得很好。下面是代码 [HttpGet] public ActionResult Index(int? clientId, string dateofAction, int? doc_typeid, string employeeID,string citizenId,int? currentFilter, string filterd
[HttpGet]
public ActionResult Index(int? clientId, string dateofAction, int? doc_typeid, string employeeID,string citizenId,int? currentFilter, string filterdateTime,int? filterdocType,string filteredemployeeID,string filteredcitizenId,int? page)
{
ViewBag.curpageNumber = page;
logDetailsEnumeration model = new logDetailsEnumeration();
DB_KYC3Entities db = new DB_KYC3Entities();
var docTypes = from c in db.tm_doc_type select c;
if (clientId != null)
{
page = 1;
}
else
{
clientId = currentFilter;
}
if(dateofAction!=null)
{
page = 1;
}
else
{
dateofAction = filterdateTime;
}
if(doc_typeid != null)
{
page = 1;
}
else
{
doc_typeid = filterdocType;
}
if(employeeID!=null)
{
page = 1;
}
else
{
employeeID = filteredemployeeID;
}
if(citizenId!=null)
{
page = 1;
}
else
{
citizenId = filteredcitizenId;
}
ViewBag.CurrentFilter = clientId;
ViewBag.filterdateTime = dateofAction;
int pageSize = 8;
int pageNumber = (page ?? 1);
VerificationLogBAL obj = new VerificationLogBAL();
int docType = obj.GetDocDetails(doc_typeid?? default(int));
List<logDetails> logDetails = obj.getlogDetails(clientId?? default(int), dateofAction, docType, employeeID, citizenId);
IPagedList<logDetails> pagedLog = logDetails.ToPagedList(pageNumber, pageSize);
model = new logDetailsEnumeration()
{
pageNum= pageNumber,
doc_typeid = doc_typeid,
Count=logDetails.Count,
employeeID = employeeID,
citizenId= citizenId,
logDetails = pagedLog,
doctype_name=new SelectList(docTypes, "doc_typeid", "doctype_name")
};
return View("Index",model);
}
}
[HttpGet]
公共操作结果索引（int？clientId、string dateofAction、int？doc_typeid、string employeeID、string citizenId、int？currentFilter、string filterdateTime、int？filterdocType、string filteredemployeeID、string filteredcitizenId、int？page）
{
ViewBag.curpageNumber=第页；
logDetailsEnumeration模型=新的logDetailsEnumeration（）；
DB_KYC3Entities DB=新的DB_KYC3Entities（）；
var docTypes=从db.tm_doc_type中的c选择c；
if（clientId！=null）
{
page=1；
}
其他的
{
clientId=当前过滤器；
}
如果（dateofAction！=null）
{
page=1；
}
其他的
{
dateofAction=filterdateTime；
}
if（doc_typeid！=null）
{
page=1；
}
其他的
{
doc_typeid=filterdocType；
}
if（employeeID！=null）
{
page=1；
}
其他的
{
employeeID=filteredemployeeID；
}
if（citizenId！=null）
{
page=1；
}
其他的
{
citizenId=filteredcitizenId；
}
ViewBag.CurrentFilter=clientId；
ViewBag.filterdateTime=操作日期；
int pageSize=8；
整数页码=（第1页）；
VerificationLogBAL obj=新的VerificationLogBAL（）；
int docType=obj.GetDocDetails（doc_typeid？？默认值（int））；
List logDetails=obj.getlogDetails（clientId？？默认值（int）、开始日期、docType、employeeID、citizenId）；
IPagedList pagedLog=logDetails.ToPagedList（页码、页面大小）；
模型=新的日志详细信息（）
{
pageNum=页码，
doc\u typeid=doc\u typeid，
Count=logDetails.Count，
employeeID=employeeID，
citizenId=公民ID，
logDetails=pagedLog，
doctype\u name=新选择列表（doctype，“doc\u typeid”，“doctype\u name”）
};
返回视图（“索引”，模型）；
}
}
@using (Html.BeginForm("Index", "VerificationLog", FormMethod.Get))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<div class="message"></div>
<div class="loginUsernamePassword">
<i class="fa fa-user"></i>
<table width="100%" border="0" cellspacing="0" cellpadding="0" class="dataTable tableHover">
<tr>
<th width="8%" scope="col">Client ID</th>
<th width="20%" scope="col">
<div class="form-box form-box-default">
@Html.TextBoxFor(x=>x.clientId, ViewBag.CurrentFilter as string, new { @id = "clientId", @placeholder = "Client ID", @class = "form-control", @maxlength = 20 })
</div>
</th>
<th width="10%" scope="col">Date Of Action</th>
<th width="20%" scope="col">
<div class="form-box form-box-default">
@Html.TextBoxFor(x=>x.dateofAction, ViewBag.filterdateTime as string, new { @id = "dateofAction", @placeholder = "Date Of Action", @class = "txtBox form-control calender validate[required]" })
@*@Html.TextBox("dateofAction", ViewBag.filterdateTime as string, new { @id = "dateofAction", @placeholder = "Date Of Action", @class = "txtBox form-control calender validate[required]" })*@
</div>
</th>
<th width="15%" scope="col">Type Of Document</th>
<th width="17%" scope="col">
<div class="form-box form-box-default">
@*@Html.TextBox("typeofDocument", ViewBag.filterdateTime as string, new { @id = "typeofDocument", @placeholder = "Type Of Document", @class = "form-control", @maxlength = 20 })*@
@Html.DropDownListFor(x=>x.doc_typeid,Model.doctype_name,"Select",new { @class = "form-control" })
</div>
</th>
</tr>
<tr>
<th width="15%" scope="col">Employee ID</th>
<th width="17%" scope="col">
<div class="form-box form-box-default">
@Html.TextBoxFor(x=>x.employeeID, Model.employeeID, new { @id = "employeeID", @placeholder = "Employee ID", @class = "form-control", @maxlength = 20 })
</div>
</th>
<th width="15%" scope="col">Citizen ID</th>
<th width="17%" scope="col">
<div class="form-box form-box-default">
@Html.TextBoxFor(x=>x.citizenId, Model.citizenId, new { @id = "citizenId", @placeholder = "Citizen ID", @class = "form-control", @maxlength = 20 })
</div>
</th>
<th width="10%" scope="col" colspan="2">
<input type="submit" value="Search" class="btn btn-primary btn-cons search" />
</tr>
</table>
</div>
}
</div>
@if (Model != null && Model.logDetails.Count != 0)
{
<br />
<h2>Verification Log</h2>
<br />
<div id="GridDetails">
<table width="100%" border="0" cellspacing="0" cellpadding="0" class="dataTable tableHover">
<tr>
@*<th>@Html.ActionLink("Label", "Index", new { sortOrder = ViewBag.LabelSortParm, currentFilter = ViewBag.CurrentFilter, filterdateTime = ViewBag.filterdateTime, filterdocType = Model.doc_typeid, filteredemployeeID = Model.employeeID, filteredcitizenId = Model.citizenId, Page = ViewBag.curpageNumber })</th>*@
<th>Label</th>
<th>Value</th>
<th>UpdatedOn</th>
<th>UpdatedBy</th>
<th>UpdatedStatus</th>
<th>RejectComment</th>
</tr>
@foreach (var group in Model.logDetails)
{
<tr>
<td>@group.contentLabel</td>
<td>@group.contentValue</td>
<td>@group.updatedOn</td>
<td>@group.updatedBy</td>
<td>@group.updatedStatus</td>
<td>@group.rejectComment</td>
</tr>
}
</table>
@Html.PagedListPager(Model.logDetails, page => Url.Action("Index",
new { page, currentFilter = ViewBag.CurrentFilter, filterdateTime=ViewBag.filterdateTime, filterdocType= Model.doc_typeid, filteredemployeeID = Model.employeeID, filteredcitizenId = Model.citizenId }))
Page @(Model.logDetails.PageCount < Model.logDetails.PageNumber ? 0 : Model.logDetails.PageNumber) of @Model.logDetails.PageCount
</div>
@使用（Html.BeginForm（“Index”、“VerificationLog”、FormMethod.Get））
{
@Html.AntiForgeryToken（）
@Html.ValidationSummary（true）
客户端ID
@Html.TextBoxFor（x=>x.clientId，ViewBag.CurrentFilter作为字符串，新的{@id=“clientId”，@placeholder=“Client id”，@class=“form control”，@maxlength=20}）
行动日期
@Html.TextBoxFor（x=>x.dateofAction，ViewBag.filterdateTime作为字符串，新的{@id=“dateofAction”，@placeholder=“操作日期”，@class=“txtBox表单控件日历验证[必需]”）
@*@TextBox（“dateofAction”，ViewBag.filterdateTime作为字符串，新的{@id=“dateofAction”，“占位符=“操作日期”，“@class=“txtBox表单控件日历验证[必需]”）*@
文件类型
@*@TextBox（“typeofDocument”，ViewBag.filterdateTime作为字符串，新的{@id=“typeofDocument”，@placeholder=“Document类型”，@class=“form control”，@maxlength=20}）*@
@Html.DropDownListFor（x=>x.doc\u typeid，Model.doctype\u name，“Select”，new{@class=“form control”}）
员工ID
@Html.TextBoxFor（x=>x.employeeID，Model.employeeID，新的{@id=“employeeID”，@placeholder=“employeeID”，@class=“form control”，@maxlength=20}）
公民身份证
@Html.TextBoxFor（x=>x.citizenId，Model.citizenId，new{@id=“citizenId”、@placeholder=“citizenId”、@class=“form control”、@maxlength=20}）
}
@if（Model！=null&&Model.logDetails.Count！=0）
{
验证日志
@*@ActionLink（“Label”，“Index”，new{sortOrder=ViewBag.LabelSortParm，currentFilter=ViewBag.currentFilter，filterdateTime=ViewBag.filterdateTime，filterdocType=Model.doc_typeid，filterdemployeeid=Model.employeeID，filterdcitizenid=Model.citizenId，Page=ViewBag.curpageNumber}）*@
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@foreach（Model.logDetails中的var组）
{
@group.contentLabel
@c组