Entity framework ASP.NETMVC2.0在jqgrid中搜索的实现
大家好，我正在尝试使用.NET（VS2008）中的MVC2在jqgrid中使用单列搜索。这是到目前为止我所拥有的代码，但我需要一个与之匹配的示例或我缺少的提示Entity framework ASP.NETMVC2.0在jqgrid中搜索的实现,entity-framework,asp.net-mvc-2,search,jqgrid,linq-to-entities,Entity Framework,Asp.net Mvc 2,Search,Jqgrid,Linq To Entities,大家好，我正在尝试使用.NET（VS2008）中的MVC2在jqgrid中使用单列搜索。这是到目前为止我所拥有的代码，但我需要一个与之匹配的示例或我缺少的提示 jQuery("#list").jqGrid({ url: '/Home/DynamicGridData/', datatype: 'json', mtype: 'POST', search: true, filters: { "groupOp":"AND", "ru
jQuery("#list").jqGrid({
url: '/Home/DynamicGridData/',
datatype: 'json',
mtype: 'POST',
search: true,
filters: {
"groupOp":"AND",
"rules": [
{"field":"Message","op":"eq","data":"True"}
]
},
multipleSearch: false,
colNames: [ 'column1', 'column2'],
colModel: [
{ name: 'column1', index: 'column1', sortable: true, search: true,
sorttype: 'text', autoFit: true,stype:'text',
searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'column2', index: 'column2', sortable: true,search: false,
sorttype: 'text', align: 'left', autoFit: true}],
pager: jQuery('#pager'),
rowNum: 10,
rowList: [10, 60, 100],
scroll: true,
sortname: 'column2',
sortorder: 'asc',
gridview: true,
autowidth: true,
rownumbers: true,
viewrecords: true,
imgpath: '/scripts/themes/basic/images',
caption: 'my data grid'
});
jQuery("#list").jqGrid('navGrid', '#pager', {add: false, edit: false, del: false},
{}, {}, {}, { multipleSearch: true, overlay: false });
//jQuery("#list").jqGrid('filterToolbar', {stringResult:true, searchOnEnter:true});
jQuery("#list").jqGrid('navButtonAdd', '#pager',
{ caption: "Finding", title: "Toggle Search Bar",
buttonicon: 'ui-icon-pin-s',
onClickButton: function() { $("#list")[0].toggleToolbar() }
});
jQuery("#list").jqGrid = {
search : {
caption: "Search...",
Find: "Find",
Reset: "Reset",
odata : ['equal', 'not equal','contains'],
groupOps: [ { op: "AND", text: "all" }, { op: "OR", text: "any" } ],
matchText: " match",
rulesText: " rules"
}
}
});
//public ActionResult DynamicGridData(string sidx, string sord, int page, int rows,bool search, string fieldname,string fieldvalue)
public ActionResult DynamicGridData(string sidx, string sord, int page, int rows)
{
var context = new AlertsManagementDataContext();
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
int totalRecords = context.Alerts.Count();
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
IQueryable<Alert> alerts = null;
try
{
//if (!search)
//{
alerts = context.Alerts.
OrderBy(sidx + " " + sord).
Skip(pageIndex * pageSize).
Take(pageSize);
//}
//else
//{
// alerts = context.Alerts.Where (fieldname +"='"+ fieldvalue +"'").
// Skip(pageIndex * pageSize).
// Take(pageSize);
//}
}
catch (ParseException ex)
{
Response.Write(ex.Position + " " + ex.Message + " " + ex.Data.ToString());
}
//var alerts =
// from a in context.Alerts
// orderby sidx ascending
// select a;
var jsonData = new {
total = totalPages,
page = page,
records = totalRecords,
rows = (
from alert in alerts
select new {
id = alert.AlertId,
cell = new string[] {
"<a href=Home/Edit/"+alert.AlertId +">Edit</a> " +"|"+
"<a href=Home/Details/"+alert.AlertId +">Detail</a> ",
alert.AlertId.ToString() ,
alert.Policy.Name ,
alert.PolicyRule ,
alert.AlertStatus.Status ,
alert.Code.ToString() ,
alert.Message ,
alert.Category.Name}
}).ToArray()
};
return Json(jsonData);
}
//public ActionResult DynamicGridData（string sidx、string sord、int page、int行、bool搜索、string fieldname、string fieldvalue）
公共操作结果DynamicGridData（字符串sidx、字符串sord、整型页面、整型行）
{
var context=new AlertsManagementDataContext（）；
int pageIndex=Convert.ToInt32（第页）-1；
int pageSize=行；
int totalRecords=context.Alerts.Count（）；
int totalPages=（int）数学上限（（float）totalRecords/（float）pageSize）；
IQueryable“+”|”+
" ",
alert.AlertId.ToString（），
alert.Policy.Name，
alert.PolicyRule，
alert.AlertStatus.Status，
alert.Code.ToString（），
警报，消息，
alert.Category.Name}
}).ToArray（）
};
返回Json（jsonData）；
}
DynamicGridData过滤器作为参数
当前代码的某些部分完全错误。例如，jqGrid
是jQuery插件。因此，jQuery的方法将使用主jqGrid
方法进行扩展，该方法用作jQuery（#list”）.jqGrid（…）
。因此在初始化jqGridjQuery（#list）之后.jqGrid
将是一个函数。在编写代码（最后一条语句）时，使用对象{search:{…}
覆盖jQuery（#list”）.jqGrid
方法。您应该做的是
jQuery.extend(jQuery.jgrid.search, {
odata : ['equal', 'not equal','contains']
});
例如，描述了如何覆盖emptyrecords
默认值。您不需要在默认jqGrid设置中包含已经相同的值
此外，如果对所有可搜索列使用searchoptions:{sopt:['eq'，ne'，cn']}
，则无需进行更改
在问题的文本中，您没有解释您想要做什么。您当前的代码是这样的：在初始网格加载时，您可以使用过滤器消息
等于true
。奇怪的是，网格中没有名为消息
的列。如果您想向服务器发送一些附加信息，您可以最好使用postData
参数：
postData: {Message:true}
我继续建议您从jqGrid定义中删除垃圾，如jqGrid的imgpath
和multipleSearch
参数和sortable:true、search:true、sorttype:'text'，autoFit:true、stype:'text'，align:'left'
，这些参数未知或默认
更新了：的原始代码非常旧，它使用LINQ to SQL。就像我之前写的（参见）实体框架（EF）允许使用排序、分页和过滤/搜索，而无需任何插件，如表单System.LINQ.Dynamic
中的LINQ动态查询库。因此，我为您制作了一个演示，它是对to EF的修改
因为您使用的是旧版本的Visual Studio（带有ASP.NET MVC 2.0的VS2008），所以我也在VS2008中进行了演示
您可以从和VS2010下载我的VS2008演示
在我展示的代码中（除了在ASP.NET MVC 2.0中使用高级搜索和工具栏搜索），如何以JSON格式从ASP.NET MVC返回异常信息，以及如何使用该方法捕获信息并显示相应的错误消息
为了从表示的EF对象构造语句，我定义了以下帮助器类：
public class Filters {
public enum GroupOp {
AND,
OR
}
public enum Operations {
eq, // "equal"
ne, // "not equal"
lt, // "less"
le, // "less or equal"
gt, // "greater"
ge, // "greater or equal"
bw, // "begins with"
bn, // "does not begin with"
//in, // "in"
//ni, // "not in"
ew, // "ends with"
en, // "does not end with"
cn, // "contains"
nc // "does not contain"
}
public class Rule {
public string field { get; set; }
public Operations op { get; set; }
public string data { get; set; }
}
public GroupOp groupOp { get; set; }
public List<Rule> rules { get; set; }
private static readonly string[] FormatMapping = {
"(it.{0} = @p{1})", // "eq" - equal
"(it.{0} <> @p{1})", // "ne" - not equal
"(it.{0} < @p{1})", // "lt" - less than
"(it.{0} <= @p{1})", // "le" - less than or equal to
"(it.{0} > @p{1})", // "gt" - greater than
"(it.{0} >= @p{1})", // "ge" - greater than or equal to
"(it.{0} LIKE (@p{1}+'%'))", // "bw" - begins with
"(it.{0} NOT LIKE (@p{1}+'%'))", // "bn" - does not begin with
"(it.{0} LIKE ('%'+@p{1}))", // "ew" - ends with
"(it.{0} NOT LIKE ('%'+@p{1}))", // "en" - does not end with
"(it.{0} LIKE ('%'+@p{1}+'%'))", // "cn" - contains
"(it.{0} NOT LIKE ('%'+@p{1}+'%'))" //" nc" - does not contain
};
internal ObjectQuery<T> FilterObjectSet<T> (ObjectQuery<T> inputQuery) where T : class {
if (rules.Count <= 0)
return inputQuery;
var sb = new StringBuilder();
var objParams = new List<ObjectParameter>(rules.Count);
foreach (Rule rule in rules) {
PropertyInfo propertyInfo = typeof (T).GetProperty (rule.field);
if (propertyInfo == null)
continue; // skip wrong entries
if (sb.Length != 0)
sb.Append(groupOp);
var iParam = objParams.Count;
sb.AppendFormat(FormatMapping[(int)rule.op], rule.field, iParam);
// TODO: Extend to other data types
objParams.Add(String.Compare(propertyInfo.PropertyType.FullName,
"System.Int32", StringComparison.Ordinal) == 0
? new ObjectParameter("p" + iParam, Int32.Parse(rule.data))
: new ObjectParameter("p" + iParam, rule.data));
}
ObjectQuery<T> filteredQuery = inputQuery.Where (sb.ToString ());
foreach (var objParam in objParams)
filteredQuery.Parameters.Add (objParam);
return filteredQuery;
}
}
为了以JSON格式将异常信息发送到jqGrid，我将控制器（HomeController
）的标准[HandleError]
属性替换为[HandleJSoneException]
，我定义如下：
// to send exceptions as json we define [HandleJsonException] attribute
public class ExceptionInformation {
public string Message { get; set; }
public string Source { get; set; }
public string StackTrace { get; set; }
}
public class HandleJsonExceptionAttribute : ActionFilterAttribute {
// next class example are modification of the example from
// the http://www.dotnetcurry.com/ShowArticle.aspx?ID=496
public override void OnActionExecuted(ActionExecutedContext filterContext) {
if (filterContext.HttpContext.Request.IsAjaxRequest() && filterContext.Exception != null) {
filterContext.HttpContext.Response.StatusCode =
(int)System.Net.HttpStatusCode.InternalServerError;
var exInfo = new List<ExceptionInformation>();
for (Exception ex = filterContext.Exception; ex != null; ex = ex.InnerException) {
PropertyInfo propertyInfo = ex.GetType().GetProperty ("ErrorCode");
exInfo.Add(new ExceptionInformation() {
Message = ex.Message,
Source = ex.Source,
StackTrace = ex.StackTrace
});
}
filterContext.Result = new JsonResult() {Data=exInfo};
filterContext.ExceptionHandled = true;
}
}
}
//要将异常作为json发送，我们定义[HandleJsonException]属性
公共类例外信息{
公共字符串消息{get；set；}
公共字符串源{get；set；}
公共字符串StackTrace{get；set；}
}
公共类HandleJSoneExceptionAttribute:ActionFilterAttribute{
//下一个类示例是对
//http://www.dotnetcurry.com/ShowArticle.aspx?ID=496
公共覆盖无效OnActionExecuted（ActionExecutedContext筛选器上下文）{
if（filterContext.HttpContext.Request.IsAjaxRequest（）&&filterContext.Exception！=null）{
filterContext.HttpContext.Response.StatusCode=
（int）System.Net.HttpStatusCode.InternalServerError；
var exInfo=新列表（）；
for（异常ex=filterContext.Exception；ex！=null；ex=ex.InnerException）{
PropertyInfo PropertyInfo=ex.GetType（）.GetProperty（“错误代码”）；
添加（新的例外信息（）{
消息=例如消息，
来源=例如来源，
StackTrace=ex.StackTrace
});
}
filterContext.Result=newjsonresult（）{Data=exInfo}；
filterContext.ExceptionHandled=true；
}
}
}
在客户端，我使用了以下JavaScript代码：
var myGrid = $('#list'),
decodeErrorMessage = function(jqXHR, textStatus, errorThrown) {
var html, errorInfo, i, errorText = textStatus + '\n' + errorThrown;
if (jqXHR.responseText.charAt(0) === '[') {
try {
errorInfo = $.parseJSON(jqXHR.responseText);
errorText = "";
for (i=0; i<errorInfo.length; i++) {
if (errorText.length !== 0) {
errorText += "<hr/>";
}
errorText += errorInfo[i].Source + ": " + errorInfo[i].Message;
}
}
catch (e) { }
} else {
html = /<body.*?>([\s\S]*)<\/body>/.exec(jqXHR.responseText);
if (html !== null && html.length > 1) {
errorText = html[1];
}
}
return errorText;
};
myGrid.jqGrid({
url: '<%= Url.Action("DynamicGridData") %>',
datatype: 'json',
mtype: 'POST',
colNames: ['Id', 'Votes', 'Title'],
colModel: [
{ name: 'Id', index: 'Id', key: true, width: 40,
searchoptions: { sopt: ['eq', 'ne', 'lt', 'le', 'gt', 'ge'] }
},
{ name: 'Votes', index: 'Votes', width: 40,
searchoptions: { sopt: ['eq', 'ne', 'lt', 'le', 'gt', 'ge'] }
},
{ name: 'Title', index: 'Title', width: 400,
searchoptions: { sopt: ['cn', 'nc', 'bw', 'bn', 'eq', 'ne', 'ew', 'en', 'lt', 'le', 'gt', 'ge'] }
}
],
pager: '#pager',
rowNum: 10,
rowList: [5, 10, 20, 50],
sortname: 'Id',
sortorder: 'desc',
rownumbers: true,
viewrecords: true,
altRows: true,
altclass: 'myAltRowClass',
height: '100%',
jsonReader: { cell: "" },
caption: 'My first grid',
loadError: function(jqXHR, textStatus, errorThrown) {
// remove error div if exist
$('#' + this.id + '_err').remove();
// insert div with the error description before the grid
myGrid.closest('div.ui-jqgrid').before(
'<div id="' + this.id + '_err" style="max-width:'+this.style.width+
';"><div class="ui-state-error ui-corner-all" style="padding:0.7em;float:left;"><span class="ui-icon ui-icon-alert" style="float:left; margin-right: .3em;"></span><span style="clear:left">' +
decodeErrorMessage(jqXHR, textStatus, errorThrown) + '</span></div><div style="clear:left"/></div>')
},
loadComplete: function() {
// remove error div if exist
$('#' + this.id + '_err').remove();
}
});
myGrid.jqGrid('navGrid', '#pager', { add: false, edit: false, del: false },
{}, {}, {}, { multipleSearch: true, overlay: false });
myGrid.jqGrid('filterToolbar', { stringResult: true, searchOnEnter: true, defaultSearch: 'cn' });
myGrid.jqGrid('navButtonAdd', '#pager',
{ caption: "Filter", title: "Toggle Searching Toolbar",
buttonicon: 'ui-icon-pin-s',
onClickButton: function() { myGrid[0].toggleToolbar(); }
});
var myGrid=$（'#list'），
decodeErrorMessage=函数（jqXHR、textStatus、ErrorSprown）{
var html，errorInfo，即
var myGrid = $('#list'),
decodeErrorMessage = function(jqXHR, textStatus, errorThrown) {
var html, errorInfo, i, errorText = textStatus + '\n' + errorThrown;
if (jqXHR.responseText.charAt(0) === '[') {
try {
errorInfo = $.parseJSON(jqXHR.responseText);
errorText = "";
for (i=0; i<errorInfo.length; i++) {
if (errorText.length !== 0) {
errorText += "<hr/>";
}
errorText += errorInfo[i].Source + ": " + errorInfo[i].Message;
}
}
catch (e) { }
} else {
html = /<body.*?>([\s\S]*)<\/body>/.exec(jqXHR.responseText);
if (html !== null && html.length > 1) {
errorText = html[1];
}
}
return errorText;
};
myGrid.jqGrid({
url: '<%= Url.Action("DynamicGridData") %>',
datatype: 'json',
mtype: 'POST',
colNames: ['Id', 'Votes', 'Title'],
colModel: [
{ name: 'Id', index: 'Id', key: true, width: 40,
searchoptions: { sopt: ['eq', 'ne', 'lt', 'le', 'gt', 'ge'] }
},
{ name: 'Votes', index: 'Votes', width: 40,
searchoptions: { sopt: ['eq', 'ne', 'lt', 'le', 'gt', 'ge'] }
},
{ name: 'Title', index: 'Title', width: 400,
searchoptions: { sopt: ['cn', 'nc', 'bw', 'bn', 'eq', 'ne', 'ew', 'en', 'lt', 'le', 'gt', 'ge'] }
}
],
pager: '#pager',
rowNum: 10,
rowList: [5, 10, 20, 50],
sortname: 'Id',
sortorder: 'desc',
rownumbers: true,
viewrecords: true,
altRows: true,
altclass: 'myAltRowClass',
height: '100%',
jsonReader: { cell: "" },
caption: 'My first grid',
loadError: function(jqXHR, textStatus, errorThrown) {
// remove error div if exist
$('#' + this.id + '_err').remove();
// insert div with the error description before the grid
myGrid.closest('div.ui-jqgrid').before(
'<div id="' + this.id + '_err" style="max-width:'+this.style.width+
';"><div class="ui-state-error ui-corner-all" style="padding:0.7em;float:left;"><span class="ui-icon ui-icon-alert" style="float:left; margin-right: .3em;"></span><span style="clear:left">' +
decodeErrorMessage(jqXHR, textStatus, errorThrown) + '</span></div><div style="clear:left"/></div>')
},
loadComplete: function() {
// remove error div if exist
$('#' + this.id + '_err').remove();
}
});
myGrid.jqGrid('navGrid', '#pager', { add: false, edit: false, del: false },
{}, {}, {}, { multipleSearch: true, overlay: false });
myGrid.jqGrid('filterToolbar', { stringResult: true, searchOnEnter: true, defaultSearch: 'cn' });
myGrid.jqGrid('navButtonAdd', '#pager',
{ caption: "Filter", title: "Toggle Searching Toolbar",
buttonicon: 'ui-icon-pin-s',
onClickButton: function() { myGrid[0].toggleToolbar(); }
});
public ActionResult DynamicGridData(string sidx, string sord, int page, int rows)
{
var context = new AlertsManagementDataContext();
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
int totalRecords = context.Alerts.Count();
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
IQueryable<Alert> alerts = null;
try
{
//if (!search)
// {
alerts = context.Alerts.
OrderBy(sidx + " " + sord).
Skip(pageIndex * pageSize).
Take(pageSize);
// }
//else
// {
// alerts = context.Alerts.Where (fieldname +"='"+ fieldvalue +"'").
// Skip(pageIndex * pageSize).
// Take(pageSize);
// }
}
catch (ParseException ex)
{
Response.Write(ex.Position + " " + ex.Message + " " + ex.Data.ToString());
}
//var alerts =
// from a in context.Alerts
// orderby sidx ascending
// select a;
var jsonData = new {
total = totalPages,
page = page,
records = totalRecords,
rows = ( from alert in alerts
select new {
id = alert.AlertId,
cell = new string[] {
"<a href=Home/Edit/"+alert.AlertId +">Edit</a> " +"|"+ "<a href=Home/Details/"+alert.AlertId +">Detail</a> ",
alert.AlertId.ToString() ,
alert.Policy.Name ,
alert.PolicyRule ,
alert.AlertStatus.Status ,
alert.Code.ToString() ,
alert.Message ,
alert.Category.Name}
}).ToArray()
};
public JsonResult GetUsers(GridSettings gridSettings, string FirstName, string LastName)
{
// conditional logic and queries here and return results)
}