private void SelectIcon(
     SelectIconUserControl selectedControl)
 {
     this.SelectedIconRelativePath = selectedControl?.Icon.RelativePath;
     this.DialogResult             = DialogResult.OK;
 }
        private void ShowIcons(
            TreeNode node)
        {
            var iconList = node.Tag as List <IconController.IconFile>;

            var panel        = this.IconsFlowLayoutPanel;
            var selectedCtrl = default(SelectIconUserControl);

            try
            {
                panel.SuspendLayout();
                panel.Controls.Clear();

                foreach (var icon in iconList)
                {
                    var ctrl = new SelectIconUserControl();

                    ctrl.Button.BackgroundImageLayout = ImageLayout.Zoom;
                    ctrl.Button.BackgroundImage       = System.Drawing.Image.FromFile(
                        icon.FullPath);

                    ctrl.Label.Text = icon.Name;
                    ctrl.Icon       = icon;

                    ctrl.Button.Font = panel.Font;
                    ctrl.Label.Font  = panel.Font;

                    ctrl.Button.Click += (s, e) =>
                    {
                        this.SelectIcon(ctrl);
                    };

                    panel.Controls.Add(ctrl);

                    if (selectedCtrl == null)
                    {
                        if (string.IsNullOrEmpty(
                                this.SelectedIconRelativePath))
                        {
                            if (this.ParrentSpell != null)
                            {
                                if (!string.IsNullOrEmpty(icon.SkillName))
                                {
                                    if (this.ParrentSpell.Keyword.Contains(icon.SkillName) ||
                                        this.ParrentSpell.SpellTitle.Contains(icon.SkillName))
                                    {
                                        selectedCtrl = ctrl;
                                    }
                                }
                            }
                        }
                        else
                        {
                            if (icon.RelativePath.ToLower() ==
                                this.SelectedIconRelativePath.ToLower())
                            {
                                selectedCtrl = ctrl;
                            }
                        }
                    }
                }
            }
            finally
            {
                panel.ResumeLayout();
            }

            if (selectedCtrl != null)
            {
                this.IconsFlowLayoutPanel.ScrollControlIntoView(selectedCtrl);
                selectedCtrl.BackColor = Color.Lavender;
                selectedCtrl.Focus();
                Application.DoEvents();
            }
        }