ASP.net 中使用Flexigrid详细教程之三--在Flexigrid中使用自定义搜索条件

<scripttype="text/javascript">
$(document).ready(function(){

$("#fgrdProduct").flexigrid
(
{
url:'JSON/ProList.ashx',
dataType:'json',
colModel:[
{display:'项目ID',name:'pro_id',sortable:true,width:80,align:'center'},
{display:'项目编码',name:'pro_no',sortable:true,width:80,align:'center'},
{display:'项目名称',name:'pro_name',sortable:true,width:80,align:'left'},
{display:'业务类别',name:'pro_type',sortable:true,width:80,align:'left'},
{display:'投资规模',name:'pro_invest',sortable:true,width:80,align:'left'},
{display:'负责人',name:'usr_cname',sortable:true,width:80,align:'right'},
{display:'启动时间',name:'pro_date',sortable:true,width:80,align:'left'},
{display:'项目进展',name:'pro_process',sortable:true,width:80,align:'left'}
],
searchitems:[
{display:'Name',name:'pro_name'}

],
buttons:[
{name:'Add',displayname:"新增",bclass:'Add',onpress:toolbarItem_onclick},
{name:'Delete',displayname:"删除",bclass:'Delete',onpress:toolbarItem_onclick}
],
sortname:'pro_id',
sortorder:'asc',
usepager:true,
striped:true,
title:'项目列表',
useRp:true,
rp:10,
showTableToggleBtn:true,
width:805,
onSubmit:addFormData,
height:250,
procmsg:'请等待数据正在加载中…'
}
);
functiontoolbarItem_onclick(cmd,grid){
if(cmd=="Add"){
alert("cmdaddisexcuted");
}
elseif(cmd=="Delete"){
alert("cmdDeleteisexcuted");
}
}
//Thisfunctionaddsparamaterstothepostofflexigrid.Youcanaddaverificationaswellcan
//returnfalseifyoudon'twantflexigridtosubmit
functionaddFormData(){

//passingaformobjecttoserializeArraywillgetthevaliddatafromalltheobjects,but,ifyoupassanon-formobject,
//youhavetospecifytheinputelementsthatthedatawillcomefrom
vardt=$('#sform').serializeArray();
$("#fgrdProduct").flexOptions({params:dt});
returntrue;
}

$('#sform').submit
(
function(){
$('#fgrdProduct').flexOptions({newp:1}).flexReload();
returnfalse;
}
);

});

</script>

searchitems:[{display:'Name',name:'pro_name'}]这一条是关键。你可以按这个格式多写几个查询条件，而我这里只有一个。

即按pro_name来搜索。前台显示为Name。

然后在后台的ASHX文件中做以下修改：

publicStringGetProList()
{
//intintFlag=int.Parse(HttpContext.Current.Session["usrFlag"].ToString());
//intintFlag=int.Parse(Session["usrFlag"])
intpage=1;
if(HttpContext.Current.Request.Form["page"]!=null)
{
page=int.Parse(HttpContext.Current.Request.Form["page"].ToString());
}
intrp=1;
if(HttpContext.Current.Request.Form["rp"]!=null)
{
rp=int.Parse(HttpContext.Current.Request.Form["rp"].ToString());
}
stringsortname="pro_id";
if(HttpContext.Current.Request.Form["sortname"]!=null)
{
sortname=HttpContext.Current.Request.Form["sortname"].ToString();
}stringwhereCondition="1=1";
if(HttpContext.Current.Request.Form["qtype"]!=null&&HttpContext.Current.Request.Form["query"]!=null&&HttpContext.Current.Request.Form["query"].ToString()!=string.Empty)
{
whereCondition=BuildWhereCondition(HttpContext.Current.Request.Form["qtype"].ToString(),HttpContext.Current.Request.Form["query"].ToString());
}
stringstrWhere="1=1";
if(HttpContext.Current.Request.Form["catID"]!=null)
{
strWhere="cat_id="+HttpContext.Current.Request.Form["catID"].ToString();
}
if(HttpContext.Current.Request.Form["proName"]!=null)
{
strWhere+="andpro_namelike'%"+HttpContext.Current.Request.Form["proName"].ToString()+"%'";
}whereCondition+="and"+strWhere;
stringsortorder="DESC";
if(HttpContext.Current.Request.Form["sortorder"]!=null)
{
sortorder=HttpContext.Current.Request.Form["sortorder"].ToString();
}
stringsortExp=sortname+""+sortorder;
intstart=((page-1)*rp)+1;DataSetds=newDataSet();inttotal=0;
BLL.projectbll=newBLL.project();
ds=bll.GetListByPage(whereCondition,sortExp,start,rp-1,outtotal);returnJsonForJqgrid(ds.Tables[0],page,total);}privatestringBuildWhereCondition(stringcolumnName,stringcolumnValue)
{
stringwhereCondition=string.Empty;
PropertyInfocolumnInfo=typeof(Model.project).GetProperty(columnName);
if(columnInfo!=null)
{
if(columnInfo.PropertyType==typeof(int))
{
whereCondition=columnName+"="+columnValue;
}
elseif(columnInfo.PropertyType==typeof(String))
{
whereCondition=columnName+"LIKE'%"+columnValue+"%'";
}
elseif(columnInfo.PropertyType==typeof(DateTime))
{
whereCondition=columnName+"='"+columnValue+"'";
}
}
returnwhereCondition;
}

即我们在ashx中定义了一个strWhere的变量，用于接受自定义的查询条件。这一点很多网上的文章没有写明，让人走了不少弯路。我试验了很多次，从qtype是取不到的。当然如果你有好的方法，可以告诉我。

今天就讲到这里吧。