private void LoadBindDataParms()
{
BindDataParamDto bindDataParam = BindDataParam;
ViewBag.Sortname = bindDataParam.Sidx;
ViewBag.Sortorder = bindDataParam.Sord;
ViewBag.Page = bindDataParam.Page;
ViewBag.RowNum = bindDataParam.Rows;
ViewBag.Filters = bindDataParam.Filters;
ViewBag.Search = bindDataParam.Search;
}
public ActionResult BindData(string sidx, string sord, int page, int rows, bool search, string filters)
{
BindDataParam = new BindDataParamDto {
Sidx = sidx, Sord = sord, Page = page, Rows = rows, Filters = filters
};
Response.Cache.SetCacheability(HttpCacheability.ServerAndPrivate);
Response.Cache.SetMaxAge(new TimeSpan(0));
CustomDataSource <PersonDto> dataSource = personBl.BindData(sidx, sord, page, rows, search, filters);
// to be able to use ToString() below which is NOT exist in the LINQ to Entity
// we should include in queryDetails only the properies which we will use below
var queryDetails = (from item in dataSource.RecordList
select new { item.Id, item.FirstName, item.LastName, item.Age }).ToList();
var retult = new
{
total = (dataSource.TotalRecords + rows - 1) / rows,
page,
records = dataSource.TotalRecords,
rows = (from item in queryDetails
select new[] {
item.Id + "",
item.FirstName,
item.LastName,
item.Age + ""
}).ToList()
};
// calculate MD5 from the returned data and use it as ETag
var serializer = new JavaScriptSerializer();
var str = serializer.Serialize(retult);
byte[] inputBytes = Encoding.ASCII.GetBytes(str);
byte[] hash = MD5.Create().ComputeHash(inputBytes);
string newETag = Convert.ToBase64String(hash);
Response.Cache.SetETag(newETag);
// compare ETag of the data which already has the client with ETag of response
string incomingEtag = Request.Headers["If-None-Match"];
if (String.Compare(incomingEtag, newETag, StringComparison.Ordinal) == 0)
{
// we don't need return the data which the client already have
Response.SuppressContent = true;
Response.StatusCode = (int)HttpStatusCode.NotModified;
return(null);
}
return(Json(retult, JsonRequestBehavior.AllowGet));
}
public ActionResult BindData(string sidx, string sord, int page, int rows, bool search, string filters)
{
BindDataParam = new BindDataParamDto { Sidx = sidx, Sord = sord, Page = page, Rows = rows, Filters = filters };
Response.Cache.SetCacheability(HttpCacheability.ServerAndPrivate);
Response.Cache.SetMaxAge(new TimeSpan(0));
CustomDataSource<PersonDto> dataSource = personBl.BindData(sidx, sord, page, rows, search, filters);
// to be able to use ToString() below which is NOT exist in the LINQ to Entity
// we should include in queryDetails only the properies which we will use below
var queryDetails = (from item in dataSource.RecordList
select new { item.Id, item.FirstName, item.LastName, item.Age}).ToList();
var retult = new
{
total = (dataSource.TotalRecords + rows - 1) / rows,
page,
records = dataSource.TotalRecords,
rows = (from item in queryDetails
select new[] {
item.Id + "",
item.FirstName,
item.LastName,
item.Age + ""
}).ToList()
};
// calculate MD5 from the returned data and use it as ETag
var serializer = new JavaScriptSerializer();
var str = serializer.Serialize(retult);
byte[] inputBytes = Encoding.ASCII.GetBytes(str);
byte[] hash = MD5.Create().ComputeHash(inputBytes);
string newETag = Convert.ToBase64String(hash);
Response.Cache.SetETag(newETag);
// compare ETag of the data which already has the client with ETag of response
string incomingEtag = Request.Headers["If-None-Match"];
if (String.Compare(incomingEtag, newETag, StringComparison.Ordinal) == 0)
{
// we don't need return the data which the client already have
Response.SuppressContent = true;
Response.StatusCode = (int)HttpStatusCode.NotModified;
return null;
}
return Json(retult, JsonRequestBehavior.AllowGet);
}