private void cmdConnectionDelete_Click(object sender, EventArgs e)
        {
            if (lstConnectionList.SelectedItem != null)
            {
                cmdSave.Visible = false;
                cmdUndo.Visible = false;

                System.Windows.Forms.DialogResult res = MessageBox.Show("Are you sure that you want to delete the Connection : " + lstConnectionList.SelectedItem.ToString(), "Delete realy?", MessageBoxButtons.YesNo);
                if (res == DialogResult.Yes)
                {
                    LockControls();

                    if (InternalConnectionList != null)
                    {
                        PLCConnectionConfiguration akConfig = null;
                        foreach (var plcConnectionConfiguration in InternalConnectionList)
                        {
                            if (plcConnectionConfiguration.ConnectionName == lstConnectionList.SelectedItem.ToString())
                            {
                                akConfig = plcConnectionConfiguration;
                            }
                        }
                        if (akConfig != null)
                        {
                            InternalConnectionList.Remove(akConfig);
                        }
                        lstConnectionList.Items.Clear();
                        foreach (var plcConnectionConfiguration in InternalConnectionList)
                        {
                            lstConnectionList.Items.Add(plcConnectionConfiguration.ConnectionName);
                        }
                        if (lstConnectionList.Items.Count > 0)
                        {
                            lstConnectionList.SelectedItem = lstConnectionList.Items[0];
                            lstLIBNODAVEConnectionType_SelectedIndexChanged(sender, e);
                        }
                        else
                        {
                            lstLIBNODAVEConnectionType.Enabled = false;
                        }
                    }
                    else
                    {
                        PLCConnectionConfiguration.DeleteConfiguration(lstConnectionList.SelectedItem.ToString());
                        lstConnectionList.Items.Clear();
                        lstConnectionList.Items.AddRange(PLCConnectionConfiguration.GetConfigurationNames());
                        if (lstConnectionList.Items.Count > 0)
                        {
                            lstConnectionList.SelectedItem = lstConnectionList.Items[0];
                            lstLIBNODAVEConnectionType_SelectedIndexChanged(sender, e);
                        }
                        else
                        {
                            lstLIBNODAVEConnectionType.Enabled = false;
                        }
                    }
                }
            }
        }
        private void cmdConnectionAdd_Click(object sender, EventArgs e)
        {
            string       cfgName = "";
            DialogResult ret     = InputBox.Show("Enter Name...", "Enter the Name of the new Connection:", ref cfgName);

            if (ret == DialogResult.OK)
            {
                if (cfgName != "")
                {
                    if (InternalConnectionList != null)
                    {
                        var akConfig = new PLCConnectionConfiguration();
                        akConfig.ConnectionName    = cfgName;
                        akConfig.ConfigurationType = LibNodaveConnectionConfigurationType.ObjectSavedConfiguration;
                        InternalConnectionList.Add(akConfig);

                        lstConnectionList.Items.Clear();
                        foreach (var plcConnectionConfiguration in InternalConnectionList)
                        {
                            lstConnectionList.Items.Add(plcConnectionConfiguration.ConnectionName);
                        }
                        lstConnectionList.SelectedItem     = cfgName;
                        lstLIBNODAVEConnectionType.Enabled = true;
                    }
                    else
                    {
                        PLCConnectionConfiguration tmp = new PLCConnectionConfiguration(cfgName);
                        tmp.SaveConfiguration();

                        lstConnectionList.Items.Clear();
                        lstConnectionList.Items.AddRange(PLCConnectionConfiguration.GetConfigurationNames());
                        lstConnectionList.SelectedItem     = cfgName;
                        lstLIBNODAVEConnectionType.Enabled = true;
                    }
                }
            }
        }