Hi DMRS,

Refer below sample.

HTML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
    </Columns>
</asp:GridView>
<br />
<asp:Label ID="lblCount" runat="server" />

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                    new DataColumn("Name", typeof(string)),
                    new DataColumn("Territory",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "Local");
        dt.Rows.Add(2, "Mudassar Khan", "Export");
        dt.Rows.Add(3, "Suzanne Mathews", "Export");
        dt.Rows.Add(4, "Robert Schidner", "Local");
        GridView1.DataSource = dt;
        GridView1.DataBind();
        var query = from row in dt.AsEnumerable()
                    group row by row.Field<string>("Territory") into data
                    orderby data.Key
                    select new
                    {
                        Name = data.Key,
                        count = data.Count()
                    };
        foreach (var key in query)
        {
            if (key.Name.ToString().ToLower() == "local")
            {
                lblLoacal.Text = key.count.ToString();
            }
            else if (key.Name.ToString().ToLower() == "export")
            {
                lblExport.Text = key.count.ToString();
            }
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn(2) {New DataColumn("Id", GetType(Integer)), New DataColumn("Name", GetType(String)), New DataColumn("Territory", GetType(String))})
        dt.Rows.Add(1, "John Hammond", "Local")
        dt.Rows.Add(2, "Mudassar Khan", "Export")
        dt.Rows.Add(3, "Suzanne Mathews", "Export")
        dt.Rows.Add(4, "Robert Schidner", "Local")
        GridView1.DataSource = dt
        GridView1.DataBind()
        Dim query = From row In dt.AsEnumerable() Group row By __groupByKey1__ = row.Field(Of String)("Territory") Into data() Select New With {Key .Name = data.Key, Key .count = data.Count()}

        For Each key In query

            If key.Name.ToString().ToLower() = "local" Then
                lblLoacal.Text = key.count.ToString()
            ElseIf key.Name.ToString().ToLower() = "export" Then
                lblExport.Text = key.count.ToString()
            End If
        Next
    End If
End Sub

Screenshot