ASP.Net MVC+Data Table实现分页+排序功能的方法

2024-02-19 20:45:03 50

本文实例讲述了ASP.NetMVC+DataTable实现分页+排序功能的方法。分享给大家供大家参考，具体如下：

实现思路：

使用datatable内置的分页，排序
使用attribute+反射来控制需要排序和显示的字段以及顺序
分离排序和显示逻辑
若要添加搜索逻辑只需要传递搜索的字段到后端即可(js初始化时把"searching":false拿掉)。

View:

@usingBCMS.BusinessLogic
@usingBCMS.BusinessLogic.Models
@modelList



@Html.DisplayNameFor(model=>model.First().PersNo)
@Html.DisplayNameFor(model=>model.First().Personnel_Name)
@Html.DisplayNameFor(model=>model.First().Position)
@Html.DisplayNameFor(model=>model.First().Interchange)
Action



@sectionscripts{

@{
varcolumns=DataTableHelper.DisplayColumns();
}
$(document).ready(function(){
$('#tblData').dataTable({
"processing":true,
"serverSide":true,
"searching":false,
"stateSave":true,
"oLanguage":{"sInfoFiltered":""},
"ajax":{
"url":@Url.Action("GetJsonData"),
"type":"GET"
},
"columns":[
{"data":"@columns[0]"},
{"data":"@columns[1]"},
{"data":"@columns[2]"},
{"data":"@columns[3]"},
{
"data":"@columns[0]",
"orderable":false,
"searchable":false,
"render":function(data,type,full,meta){
if(type==='display'){
returnGetDetailButton("/BusCaptain/Detail?bcId=",data)+GetInfoButton("/Telematics?bcId=",data,"Performance");
}else{returndata;}
}
}
],
"order":[[0,"asc"]]
});
});

}

Controller:

publicActionResultGetJsonData(intdraw,intstart,intlength)
{
stringsearch=Request.QueryString[DataTableQueryString.Searching];
stringsortColumn="";
stringsortDirection="asc";
if(Request.QueryString[DataTableQueryString.OrderingColumn]!=null)
{
sortColumn=GetSortColumn(Request.QueryString[DataTableQueryString.OrderingColumn]);
}
if(Request.QueryString[DataTableQueryString.OrderingDir]!=null)
{
sortDirection=Request.QueryString[DataTableQueryString.OrderingDir];
}
DataTableDatadataTableData=newDataTableData();
dataTableData.draw=draw;
intrecordsFiltered=0;
dataTableData.data=BusCaptainService.Instance.SearchMyBuscaptains(User.Identity.Name,outrecordsFiltered,start,length,sortColumn,sortDirection,search).Data;
dataTableData.recordsFiltered=recordsFiltered;
returnJson(dataTableData,JsonRequestBehavior.AllowGet);
}
publicstringGetSortColumn(stringsortColumnNo)
{
varname=DataTableHelper.SoringColumnName(sortColumnNo);
returnname;
}
publicclassDataTableData
{
publicintdraw{get;set;}
publicintrecordsFiltered{get;set;}
publicListdata{get;set;}
}

Model:

classXXX{
...
[DisplayColumn(0)]
[SortingColumn(0)]
publicint?A{get;set;}
[DisplayColumn(1)]
[SortingColumn(1)]
publicstringB{get;set;}
...
}

Helperclass:

publicclassSortingColumnAttribute:Attribute
{
publicintIndex{get;}
publicSortingColumnAttribute(intindex)
{
Index=index;
}
}
publicclassDisplayColumnAttribute:Attribute
{
publicintIndex{get;}
publicDisplayColumnAttribute(intindex)
{
Index=index;
}
}
publicstaticclassDataTableQueryString
{
publicstaticstringOrderingColumn="order[0][column]";
publicstaticstringOrderingDir="order[0][dir]";
publicstaticstringSearching="search[value]";
}
publicstaticclassDataTableHelper
{
publicstaticIListDisplayColumns()
{
varresult=newDictionary();
varprops=typeof(T).GetProperties();
foreach(varpropertyInfoinprops)
{
varpropAttr=
propertyInfo
.GetCustomAttributes(false)
.OfType()
.FirstOrDefault();
if(propAttr!=null)
{
result.Add(propAttr.Index,propertyInfo.Name);
}
}
returnresult.OrderBy(x=>x.Key).Select(x=>x.Value).ToList();
}
publicstaticstringSoringColumnName(stringcolumnIndex)
{
intindex;
if(!int.TryParse(columnIndex,outindex))
{
thrownewArgumentOutOfRangeException();
}
returnSoringColumnName(index);
}
publicstaticstringSoringColumnName(intindex)
{
varprops=typeof(T).GetProperties();
foreach(varpropertyInfoinprops)
{
varpropAttr=
propertyInfo
.GetCustomAttributes(false)
.OfType()
.FirstOrDefault();
if(propAttr!=null&&propAttr.Index==index)
{
returnpropertyInfo.Name;
}
}
return"";
}
}

Query：

...
varquery=context.BusCaptains
.Where(x=>...)
.OrderByEx(sortDirection,sortField)
.Skip(start)
.Take(pageSize);
...

LINQHelper:

...
publicstaticIQueryableOrderByEx(thisIQueryableq,stringdirection,stringfieldName)
{
try
{
varcustomProperty=typeof(T).GetCustomAttributes(false).OfType().FirstOrDefault();
if(customProperty!=null)
{
fieldName=customProperty.Name;
}
varparam=Expression.Parameter(typeof(T),"p");
varprop=Expression.Property(param,fieldName);
varexp=Expression.Lambda(prop,param);
stringmethod=direction.ToLower()=="asc"?"OrderBy":"OrderByDescending";
Type[]types=newType[]{q.ElementType,exp.Body.Type};
varmce=Expression.Call(typeof(Queryable),method,types,q.Expression,exp);
returnq.Provider.CreateQuery(mce);
}
catch(Exceptionex)
{
_log.ErrorFormat("errorformOrderByEx.");
_log.Error(ex);
throw;
}
}
...

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希望本文所述对大家asp.net程序设计有所帮助。

ASP.Net MVC+Data Table实现分页+排序功能的方法

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