Add the files

Example/AddContactForm.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+namespace MSNPSharpClient
+{
+    public partial class AddContactForm : Form
+    {
+        public AddContactForm(string account)
+        {
+            InitializeComponent();
+
+            if (!String.IsNullOrEmpty(account))
+            {
+                this.account = account;
+                txtAccount.Text = account;
+            }
+        }
+
+        private string account;
+        public string Account
+        {
+            get
+            {
+                return account;
+            }
+        }
+
+        private string invitationMessage;
+        public string InvitationMessage
+        {
+            get
+            {
+                return invitationMessage;
+            }
+        }
+
+        private void btn_Click(object sender, EventArgs e)
+        {
+            account = txtAccount.Text;
+            invitationMessage = txtInvitation.Text;
+
+            Close();
+        }
+    }
+}