Add referance  of Microsoft.Office.Interop.Outlook library(example is using Microsoft.Office.Interop.Outlook 12.0)
Add one DatagridView and one button on form1.
And declare:
Microsoft.Office.Interop.Outlook.Items OutlookItems;
Microsoft.Office.Interop.Outlook.Application outlookObj;
MAPIFolder Folder_Contacts; 
 
Work on Form1:
private void Form1_Load(object sender, EventArgs e)
{
    Microsoft.Office.Interop.Outlook.Application outlookObj = new Microsoft.Office.Interop.Outlook.Application();
    MAPIFolder Folder_Contacts = (MAPIFolder)outlookObj.Session.GetDefaultFolder(OlDefaultFolders.olFolderContacts); 
    OutlookItems = Folder_Contacts.Items; 
    for (int i = 0; i < oItems.Count; i++)
    {
        Microsoft.Office.Interop.Outlook.ContactItem contact = (Microsoft.Office.Interop.Outlook.ContactItem)OutlookItems[i + 1];
        dataGridView1.Rows.Add();
        if (contact.FirstName != null)
        {
            dataGridView1.Rows[i].Cells[0].Value = contact.FirstName;
        }
        else
        {
            dataGridView1.Rows[i].Cells[0].Value = "";
        }
        if (contact.MiddleName != null)
        {
            dataGridView1.Rows[i].Cells[1].Value = contact.MiddleName;
        }
        else
        {
            dataGridView1.Rows[i].Cells[1].Value = "";
        }
        if (contact.LastName != null)
        {
            dataGridView1.Rows[i].Cells[2].Value = contact.LastName;
        }
        else
        {
            dataGridView1.Rows[i].Cells[2].Value = "";
        }
        if (contact.Email1Address != null)
        {
            dataGridView1.Rows[i].Cells[3].Value = contact.Email1Address;
        }
        else
        {
            dataGridView1.Rows[i].Cells[3].Value = "";
        }
        }
}
Add code for showing contact'description on new form frmEditContact :
private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex != -1)
    {
        Microsoft.Office.Interop.Outlook.ContactItem contact = (Microsoft.Office.Interop.Outlook.ContactItem)OutlookItems[e.RowIndex + 1];
        frmEditContact frm = new frmEditContact();
        frm.Fname = contact.FirstName;
        frm.Mname = contact.MiddleName;
        frm.Lname = contact.LastName;
        frm.Eamil = contact.Email1Address;
        frm.ShowDialog();
    }
}
Work on frmEditContact:
public partial class frmEditContact : Form
{
    public frmEditContact()
    {
        InitializeComponent();
    }
    public string Fname = "";
    public string Mname = "";
    public string Lname = "";
    public string Eamil = "";
    private void frmEditContact_Load(object sender, EventArgs e)
    {
        txtFname.Text = Fname;
        txtMname.Text = Mname;
        txtLname.Text = Lname;
        txtEmail.Text = Eamil;
    }
}
frmEditContact will show as: