Added client commands backend

SamaPager_Client/Form1.cs

@@ -60,5 +60,11 @@ namespace SamaPager_Client
             }
 
         }
+
+        private void cmdLst_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            logLst.Items.Add(pageClient.SendCommand(cmdLst.Text));
+            cmdLst.Text = String.Empty;
+        }
     }
 }