Sort DataTable Rows and Order by Date and populate GridView using C# .Net

Hi uxmaan,

I have made a sample that full-fill your requirement.

Here i have used linq.

HTML

<asp:GridView ID="gvDates" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" />
        <asp:BoundField DataField="Date" HeaderText="Date" />
    </Columns>
</asp:GridView>

 Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        var currentNextDates = from DataRow dr in Dates.Rows
                                where (Convert.ToDateTime(dr[1]) >= DateTime.Now && Convert.ToDateTime(dr[1]) <= DateTime.Now.AddDays(1)) || Convert.ToDateTime(dr[1]).ToShortDateString().Equals(DateTime.Now.ToShortDateString())
                                orderby Convert.ToDateTime(dr[1])
                                select dr;
        var remainingDates = from DataRow dr in Dates.Rows
                                where !Convert.ToDateTime(dr[1]).ToShortDateString().Equals(DateTime.Now.ToShortDateString()) && !Convert.ToDateTime(dr[1]).ToShortDateString().Equals(DateTime.Now.AddDays(1).ToShortDateString())
                                orderby Convert.ToDateTime(dr[1])
                                select dr;
        var dates = currentNextDates.Union(remainingDates);
        DataTable result = Dates.Clone();
        foreach (DataRow item in dates.ToArray())
        {
            result.ImportRow(item);
        }
        this.gvDates.DataSource = result;
        this.gvDates.DataBind();
    }
}

private DataTable Dates
{
    get
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[2] {
        new DataColumn("Id",typeof(int)),
        new DataColumn("Date",typeof(DateTime))});
        dt.Rows.Add(1, "08/01/2015");
        dt.Rows.Add(2, "08/02/2015");
        dt.Rows.Add(3, "08/03/2015");
        dt.Rows.Add(4, "08/04/2015");
        dt.Rows.Add(5, "08/05/2015");
        dt.Rows.Add(6, "08/06/2015");
        dt.Rows.Add(7, "08/07/2015");
        dt.Rows.Add(8, "08/08/2015");
        dt.Rows.Add(9, "08/09/2015");
        dt.Rows.Add(10, "08/10/2015");
        dt.Rows.Add(11, "09/01/2015");
        dt.Rows.Add(12, "09/02/2015");
        dt.Rows.Add(13, "09/03/2015");
        dt.Rows.Add(14, "08/11/2015");
        dt.Rows.Add(15, "08/12/2015");
        dt.Rows.Add(16, "08/13/2015");
        dt.Rows.Add(17, "08/06/2015");
        return dt;
    }
}

Screenshot

Hope this will help you.