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fetch page size recored from database to display in radgrid ?
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This is a migrated thread and some comments may be shown as answers.
hamid
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hamid asked on 21 Jan 2016, 12:42 PM

Hi

I wana to fetch page size  of radgrid record from data base , but in your online demo code  , you used   (select * from xxx) !...

in this link

http://demos.telerik.com/aspnet-ajax/grid/examples/performance/linq/defaultcs.aspx

you talk about performance ! but if my table has a lot of recored , why i should fetch all of them ???

In  asp.net 4.5  for   "  asp:GridView  " control i can use this code :

 

public IEnumerable<SearchProvince> GetProvinces(int startRowIndex, int maximumRows, out int totalRowCount,
             [System.Web.ModelBinding.Control("pID")]int? provinceId,
             [System.Web.ModelBinding.Control("pName")] string provinceName)
        {
            using (var db = new XXXEntities())
            {
                IQueryable<Province> list =
                    (from p in db.Provinces
                     select new SearchProvince { ProvinceID = p.ProvinceID, ProvinceName = p.ProvinceName }).OrderBy(
                            p => p.ProvinceName);

                if (provinceId > 0)
                {
                    startRowIndex = 0;
                    list = list.Where(p => p.ProvinceID == provinceId);
                }
                if (!string.IsNullOrWhiteSpace(provinceName))
                {
                    startRowIndex = 0;
                    list = list.Where(p => p.ProvinceName.StartsWith(provinceName));
                }
                totalRowCount = list.Count();
                return list.Skip(startRowIndex).Take(maximumRows).ToList();
            }
        }

 

How can i implement this code for  RadGrid ?

 

thanks

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Viktor Tachev
Telerik team
answered on 25 Jan 2016, 02:08 PM
Hello Hamid,

Similar behavior can be implemented for RadGrid. If you would like to retrieve only the relevant items from the data source you can implement custom paging.

Check out the following example that illustrates the approach:



Regards,
Viktor Tachev
Telerik
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hamid
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Viktor Tachev
Telerik team
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