How To Sort Datatable in c#.net

I think this is the easiest way to sort a Datatable..

dt.DefaultView.Sort = "Parameter_Name";
dt = dt.DefaultView.ToTable();

This[^] is how I'd solve this problem.

Google, my friend, Google.
A very quick search using your subject as the search term lead me to MSDN: Filtering and Sorting Directly in Data Tables[^]

Next time, try google first!

DataTable _dt = new DataTable();
_dt.Columns.Add("Date", typeof(DateTime));
_dt.Columns.Add("Preferance", typeof(int));

_dt.Rows.Add("30/07/2011", 0);
_dt.Rows.Add("02/03/2011", 1);
_dt.Rows.Add("10/12/2011", 2);
_dt.Rows.Add("01/12/2011", 3);

DataView _dv = new DataView(_dt);
_dv.Sort = "Date ASC";

for (int i = 0; i < _dv.Count; i++)
{
    Console.WriteLine(Convert.ToDateTime(_dv[i]["Date"]).ToString("dd/MM/yyyy") + "\t" + _dv[i]["Preferance"]);
}

TableToConvert.DefaultView.Sort = "EVENT_ID";
DataView TableView = TableToConvert.DefaultView;
DataTable NewTable = TableView.ToTable();

The new Table will be sorted

DataTable dtCategory = dsHotelResponse.Tables["Category"].DefaultView.ToTable(true,"ApartmentNo", "Gross").Select("ApartmentNo='" + (roomNo) + "'", "Gross asc").CopyToDataTable();


roomno is use for to filter dynamic values for ApartmentNo change it depend upon your condiction

Sort numerically DataView

Just Use the following code for Reordering Rows in DataTable :
---------------------------------------------------------------
ds.Tables["dtPaymentScheduleTemplateInstallments"].DefaultView.Sort = "[Display Order] ASC";
ds.Tables["dtPaymentScheduleTemplateInstallments"].AcceptChanges();
dtgInstallments.DataSource = ds.Tables["dtPaymentScheduleTemplateInstallments"].DefaultView;

Where :
--------
ds --> DataSet
dtPaymentScheduleTemplateInstallments --> DataTable within DataSet
[Display Order] --> ColumnName on behalf we are Reordering

//Sorting the Table
            DataView dv = dt.DefaultView;
            dv.Sort = "ParamValue asc";
            DataTable sortedtable1 = dv.ToTable();