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오오이가 있습니다!jqGrid + ASP.NET WebForm (C#) 검색 능력
저는 며칠 동안이 문제로 어려움을 겪어 왔습니다.
내가 정보를 정렬 할 수 있습니다 그리드, 다시 구문 분석 얻을 관리했지만, 나는 결과를 필터링 노력하고있을 때, 그것은 혼란을 조금 얻을 수..
내가 약에 대한 C#을 프로그래밍 한 4-5 개월이지만 Web Forms, Javascript 및 JQuery (JSON 포함)는 약 14 일 정도이므로 어쩌면 매우 기본적인 문제 일 수 있습니다. 제발!
먼저 JSON 구문이 올바른지 궁금합니다.
{"grid":{"_search":true,"nd":1291150141196,"rows":20,"page":1,"sidx":"Name","sord":"asc","filters":"{\"groupOp\":\"AND\",\"rules\":[{\"field\":\"Phone\",\"op\":\"eq\",\"data\":\"2343444\"}]}"}}
그 백 슬래시 나에게 잘못된 것, 그리고 I는 서버 측에서이를 필터링 시도했지만 운이 - 다시, 경험의 십사일.
오류 메시지 :
"System.InvalidOperationException"
"Cannot convert object of type 'System.String' to type 'Filter'"
" at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.AssignToPropertyOrField(Object propertyValue, Object o, String memberName, JavaScriptSerializer serializer, Boolean throwOnError)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertDictionaryToObject(IDictionary`2 dictionary, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary`2 rawParams)\r\n at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)"
내의 WebMethod :
[WebMethod]
[ScriptMethod]
public string GetAll(GridSettings grid) {
var query = from p in dc.Customers select p;
//if (grid._search)
// if (grid.filters.groupOp == "AND")
// {
// foreach (var rule in grid.filters.Rules)
// query = query.Where<Customers>(rule.field, rule.data, rule.oper);
// }
// else if (grid.filters.groupOp == "OR")
// {
// var temp = (new List<Customers>()).AsQueryable();
// foreach (var rule in grid.filters.Rules)
// {
// var t = query.Where<Customers>(rule.field, rule.data, rule.oper);
// temp = temp.Concat<Customers>(t);
// }
// query = temp.Distinct<Customers>();
// }
query = query.OrderBy<Customers>(grid.sidx, grid.sord);
List<Customer> result = new List<Customer>();
foreach (var x in query)
{
Customer y = new Customer();
y.Phone = x.Phone;
y.Name = x.Name;
y.Address = x.Address;
y.Postal = x.Postal;
y.City = x.City;
y.Date = x.Date.ToString("dd-MM-yy");
result.Add(y);
}
return JsonConvert.SerializeObject(new PagedList(result, result.Count(), 1, 20));
}
} I, 그것은 반드시 생각하지 않아도을 통해
(서버 측 ATM 필터링하지 않습니다.)
public class Customer
{
public string Phone { get; set; }
public string Name { get; set; }
public string Address { get; set;}
public string Postal { get; set; }
public string City { get; set; }
public string Date { get; set; }
}
public class GridSettings
{
public bool _search { get; set; }
public Filter filters { get; set; }
public long nd { get; set; }
public int rows { get; set; }
public int page { get; set; }
public string sidx { get; set; }
public string sord { get; set; }
}
public class Filter
{
public string groupOp { get; set; }
public Rule[] Rules { get; set; }
public static Filter Create(string json)
{
try
{
return JsonConvert.DeserializeObject<Filter>(json);
}
catch
{
return null;
}
}
}
public class Rule
{
private Dictionary<string, WhereOperation> operations = new Dictionary<string, WhereOperation> {
{ "eq",WhereOperation.Equal },
{ "ne",WhereOperation.NotEqual },
{ "cn",WhereOperation.Contains }
};
public string field { get; set; }
public string op { set; get; }
public WhereOperation oper { get { return operations[op]; } }
public string data { get; set; }
}
public static class LinqExtensions
{
public static IQueryable<T> OrderBy<T>(this IQueryable<T> query, string sortColumn, string direction)
{
ParameterExpression parameter = Expression.Parameter(query.ElementType, "p");
MemberExpression memberAccess = null;
string methodName = string.Format("OrderBy{0}", direction.ToLower() == "asc" ? "" : "descending");
foreach (var property in sortColumn.Split('.'))
{
memberAccess = MemberExpression.Property(memberAccess ?? (parameter as Expression), property);
}
LambdaExpression orderByLambda = Expression.Lambda(memberAccess, parameter);
MethodCallExpression result = Expression.Call(
typeof(Queryable),
methodName,
new[] { query.ElementType, memberAccess.Type },
query.Expression,
Expression.Quote(orderByLambda));
return query.Provider.CreateQuery<T>(result);
}
public static IQueryable<T> Where<T>(this IQueryable<T> query, string column, object value, WhereOperation operation)
{
try
{
if (string.IsNullOrEmpty(column))
return query;
ParameterExpression parameter = Expression.Parameter(query.ElementType, "p");
MemberExpression memberAccess = null;
foreach (var property in column.Split('.'))
memberAccess = Expression.Property(memberAccess ?? (parameter as Expression), property);
if (memberAccess == null)
return query.Where(p => true);
Expression conditional = Expression.Call(null, typeof(LinqExtensions).GetMethod("Comparer"), Expression.Convert(memberAccess, typeof(object)), Expression.Convert(Expression.Constant(value), typeof(object)), Expression.Constant(operation));
MethodCallExpression result = Expression.Call(typeof(Queryable), "Where", new[] { query.ElementType }, query.Expression, Expression.Lambda(conditional, parameter));
return query.Provider.CreateQuery<T>(result);
}
catch
{
return query.Where(p => true);
}
}
public static bool Comparer(this object value1, object value2, WhereOperation operation)
{
string strValue1 = value1.ToString().ToLowerInvariant().Trim();
string strValue2 = value2.ToString().ToLowerInvariant().Trim();
double dblValue1 = -1;
double dblValue2 = -1;
bool areNumbers = double.TryParse(strValue1, out dblValue1) && double.TryParse(strValue2, out dblValue2);
switch (operation)
{
case WhereOperation.Equal:
return areNumbers ? dblValue1 == dblValue2 : strValue1 == strValue2;
case WhereOperation.NotEqual:
return areNumbers ? dblValue1 != dblValue2 : strValue1 != strValue2;
case WhereOperation.Contains:
return strValue1.Contains(strValue2);
}
return true;
}
}
public enum WhereOperation
{
Equal, NotEqual, Contains
}
public class StringValueAttribute : System.Attribute
{
private string _value;
public StringValueAttribute(string value)
{
_value = value;
}
public string Value
{
get { return _value; }
}
}
public class PagedList
{
IEnumerable _rows;
int _totalRecords;
int _pageIndex;
int _pageSize;
object _userData;
public PagedList(IEnumerable rows, int totalRecords, int pageIndex, int pageSize, object userData)
{
_rows = rows;
_totalRecords = totalRecords;
_pageIndex = pageIndex;
_pageSize = pageSize;
_userData = userData;
}
public PagedList(IEnumerable rows, int totalRecords, int pageIndex, int pageSize)
: this(rows, totalRecords, pageIndex, pageSize, null)
{
}
public int total { get { return (int)Math.Ceiling((decimal)_totalRecords/(decimal)_pageSize); } }
public int page { get { return _pageIndex; } }
public int records { get { return _totalRecords; } }
public IEnumerable rows { get { return _rows; } }
public object userData { get { return _userData; } }
public override string ToString()
{
return JsonConvert.SerializeObject(this);
}
}
모든 마침내 자바 스크립트 :
$(function() {
$("#CustomerList").dialog({
autoOpen: false,
show: "explode",
width: 720,
height: 450,
open: function() {
$("#CustomerListTable").jqGrid({
datatype: function (pdata) { getListData(pdata, 'Customers', '#CustomerListTable'); },
colNames: ['Telefon', 'Navn', 'Adresse', 'Post', 'By', 'CVR'],
colModel: [
{ name: 'Phone', width: 70, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'Name', width: 200, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'Address', width: 200, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'Postal', width: 60, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'City', width: 100, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} },
{ name: 'CVR', width: 70, sortable: true, searchoptions: { sopt: ['eq', 'ne', 'cn']} }
],
caption: "",
height: 360,
loadonce: true,
scroll: 1,
pager: '#CustomerListPager',
gridview: true,
sortname: 'Name',
sortorder: 'asc'
});
$("#CustomerListTable").jqGrid('navGrid', '#CustomerListPager', { del: false, add: false, edit: false }, {}, {}, {}, { multipleSearch: true });
}
});
});
function getListData(pdata, controller, table) {
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "Controls/" + controller + ".asmx/GetAll",
data: "{\"grid\":" + JSON.stringify(pdata) + "}",
dataType: "json",
success: function (data, textStatus) {
if (textStatus == "success") RecievedData(JSON.parse(getMain(data)).rows, table);
},
error: function (data, textStatus) {
alert("Error fetching data");
}
});
}
function RecievedData(data, table) {
var thegrid = $(table);
thegrid.clearGridData();
for (var i = 0; i < data.length; i++) thegrid.addRowData(i + 1, data[i]);
thegrid.removeClass("jqgrid-overlay");
}
function getMain(data) {
if (data.hasOwnProperty("d")) return data.d;
else return data;
}
내가 여기까지가이 솔루션은 읽고 ... 내가 너트가는 약거야 실험 시간과 고글의 시간의 결과입니다!
내가 여기있는 동안 - jqGrid 검색 버튼이 #CustomerListPager에서 X 번 표시되는 이유는 무엇입니까? 대화 상자를 닫거나 열 때 데이터가 다시 요청되지 않는 이유는 무엇입니까? 매번 페이지를 새로 고쳐야합니다. - 주로 JQuery를 사용하는 이유입니다. - 피하고 싶습니다.)
지금까지 읽은 독자에게 감사드립니다.
해 12 월!
니키.