public virtual string LoadGridAjax <T>(IEnumerable <T> source = null, Expression <Func <T, bool> > predicate = null, params string[] includes) where T : class
{
try
{
var draw = Request.Form.GetValues("draw").FirstOrDefault();
var start = Request.Form.GetValues("start").FirstOrDefault();
var length = Request.Form.GetValues("length").FirstOrDefault();
var sortColumn = Request.Form.GetValues("columns[" + Request.Form.GetValues("order[0][column]").FirstOrDefault() + "][name]").FirstOrDefault();
var sortColumnDir = Request.Form.GetValues("order[0][dir]").FirstOrDefault();
var searchValue = Request.Form.GetValues("search[value]").FirstOrDefault();
//Paging Size (10,20,50,100)
int pageSize = length != null?Convert.ToInt32(length) : 0;
int skip = start != null?Convert.ToInt32(start) : 0;
int recordsTotal = 0;
if (source == null || source is IQueryable)
{
var modelData = source == null?Repository.Instance.All <T>(includes) : source;
if (!string.IsNullOrEmpty(searchValue))
{
modelData = Repository.Instance.Filter(predicate);
//if (source != null)
// modelData = source.Intersect(modelData);
//var searchColumns = search.Count() == 0 ? ObjectUtility.GetAllColumnsByObject<T>().ToArray() : search;
//modelData = modelData.Where(x => searchColumns.Any(y => (x.GetPropertyValue(y)).ToString().ToLower().IndexOf(searchValue.ToLower()) != -1));
}
//Sorting
if (!(string.IsNullOrEmpty(sortColumn) && string.IsNullOrEmpty(sortColumnDir)))
{
modelData = modelData.OrderBy(sortColumn + " " + sortColumnDir);
}
////total number of rows count
recordsTotal = modelData.Count();
////Paging
pageSize = recordsTotal < pageSize ? recordsTotal : pageSize;
var data = modelData.Skip(skip).Take(pageSize).ToList();
//Returning Json Data
return(JsonConvert.SerializeObject(new { draw = draw, recordsFiltered = recordsTotal, recordsTotal = recordsTotal, data = data }, Formatting.Indented,
new JsonSerializerSettings
{
ReferenceLoopHandling = ReferenceLoopHandling.Ignore
}));
}
else
{
var modelData = source;
if (!string.IsNullOrEmpty(searchValue))
{
var searchColumns = predicate == null?ObjectUtility.GetAllColumnsByObject <T>().ToArray() : null;
//var u = modelData.Where<T>(predicate);//(searchColumns == null) ? modelData.Where<T>(predicate).As;
if (searchColumns == null)
{
modelData = modelData.AsQueryable().Where(predicate);
}
else
{
modelData = modelData.Where(x => searchColumns.Any(y => (x.GetPropertyValue(y)).ToString().ToLower().IndexOf(searchValue.ToLower()) != -1));
}
}
if (!(string.IsNullOrEmpty(sortColumn) && string.IsNullOrEmpty(sortColumnDir)))
{
modelData = sortColumnDir.ToLower() == "asc" ? modelData.OrderBy(x => x.GetPropertyValue(sortColumn)) : modelData.OrderByDescending(x => x.GetPropertyValue(sortColumn));
}
recordsTotal = modelData.Count();
pageSize = recordsTotal < pageSize ? recordsTotal : pageSize;
var data = modelData.Skip(skip).Take(pageSize).ToList();
return(JsonConvert.SerializeObject(new { draw = draw, recordsFiltered = recordsTotal, recordsTotal = recordsTotal, data = data }, Formatting.Indented,
new JsonSerializerSettings
{
ReferenceLoopHandling = ReferenceLoopHandling.Ignore
}));
}
}
catch (Exception ex)
{
throw;
Console.WriteLine(ex);
var modelData = (from tempcustomer in Repository.Instance.All <T>()
select tempcustomer);
return(JsonConvert.SerializeObject(new { draw = "", recordsFiltered = modelData.Count(), recordsTotal = modelData.Count(), data = modelData.Take(100).ToList() }, Formatting.Indented,
new JsonSerializerSettings
{
ReferenceLoopHandling = ReferenceLoopHandling.Ignore
}));
}
}