C#

public partial class Form1 : Form
   {
        public Form1()
        {
            InitializeComponent();
            //sort colum header
            this.dataGridView1.VirtualMode = false;
            this.dataGridView1.SortCompare += new System.Windows.Forms.DataGridViewSortCompareEventHandler(this.dataGridView1_SortCompare);

            dataGridView1.DataSource = CreateTable(5);

        }

        private static DataTable CreateTable(int RowCount)
        {
            DataTable tbl = new DataTable();
            tbl.Columns.Add("check1", typeof(bool));
            tbl.Columns.Add("ID", typeof(int));
            tbl.Columns.Add("Name", typeof(string));
            tbl.Columns.Add("Number", typeof(int));
            tbl.Columns.Add("Date", typeof(DateTime));
            tbl.Columns.Add("check2", typeof(bool));
            for (int i = 0; i < RowCount; i++)
                tbl.Rows.Add(new object[] { false, i, String.Format("Name{0}", i), 3 - i, DateTime.Now.AddDays(i), true });
            return tbl;
        }

        private void dataGridView1_SortCompare(object sender, DataGridViewSortCompareEventArgs e)
        {
            // Try to sort based on the cells in the current column.
            e.SortResult = System.String.Compare(
                e.CellValue1.ToString(), e.CellValue2.ToString());

            // If the cells are equal, sort based on the ID column.
            if (e.SortResult == 0 && e.Column.Name != "ID")
            {
                e.SortResult = System.String.Compare(
                    dataGridView1.Rows[e.RowIndex1].Cells["ID"].Value.ToString(),
                    dataGridView1.Rows[e.RowIndex2].Cells["ID"].Value.ToString());
            }
            e.Handled = true;
        }

    }

BillWoodruff wrote:

So, you be the judge: hack, or useful information ? Anomalous but reliable, or, anomalous and unreliable ?

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

IPAddress address = Dns.GetHostAddresses(Hostname)
    .OrderBy(a => a.AddressFamily == AddressFamily.InterNetwork ? 0 : 1) // Sort IPv4 addresses first
    .FirstOrDefault();

if (address == null) throw new InvalidOperationException($"Cannot resolve host '{Hostname}'.");

PingReply reply = ping.Send(address, 1000);

mniceguy81 wrote:

has to be 2 for IPv4.

Quote:

What should I install in the visual studio ?