DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/DotNetBarDesignTime/TimeZoneSelectionEditor.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows.Forms.Design;
+using System.ComponentModel;
+using System.Windows.Forms;
+using System.Drawing.Design;
+
+namespace DevComponents.DotNetBar.Design
+{
+    /// <summary>
+    /// Represents editor for Time-Zone ID selection.
+    /// </summary>
+    public class TimeZoneSelectionEditor : System.Drawing.Design.UITypeEditor
+    {
+        #region Constructor
+
+        #endregion
+
+        #region Implementation
+        private IWindowsFormsEditorService _EditorService = null;
+
+        public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
+        {
+            if (context != null
+                && context.Instance != null
+                && provider != null)
+            {
+                ElementStyle es = value as ElementStyle;
+
+                _EditorService = provider.GetService(typeof(IWindowsFormsEditorService)) as IWindowsFormsEditorService;
+
+                if (_EditorService != null)
+                {
+                    ListBox lb = new ListBox();
+                    List<DevComponents.Schedule.TimeZoneInfo> timeZonesList = DevComponents.Schedule.TimeZoneInfo.GetSystemTimeZones();
+                    int selectedIndex = -1;
+                    for (int i = 0; i < timeZonesList.Count; i++)
+                    {
+                        DevComponents.Schedule.TimeZoneInfo timeZoneInfo = timeZonesList[i];
+                        lb.Items.Add(timeZoneInfo.Id);
+                        if (timeZoneInfo.Id.Equals((string)value))
+                            selectedIndex = i;
+                    }
+                    lb.SelectedIndex = selectedIndex;
+                    lb.SelectedIndexChanged += new EventHandler(this.SelectedChanged);
+                    _EditorService.DropDownControl(lb);
+                    return lb.SelectedItem;
+                }
+            }
+
+            return value;
+        }
+
+        private void SelectedChanged(object sender, EventArgs e)
+        {
+            if (_EditorService != null)
+                _EditorService.CloseDropDown();
+        }
+
+        /// <summary>
+        /// Gets the editor style used by the EditValue method.
+        /// </summary>
+        /// <param name="context">An ITypeDescriptorContext that can be used to gain additional context information.</param>
+        /// <returns>A UITypeEditorEditStyle value that indicates the style of editor used by EditValue. If the UITypeEditor does not support this method, then GetEditStyle will return None</returns>
+        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
+        {
+            if (context != null && context.Instance != null)
+            {
+                return UITypeEditorEditStyle.DropDown;
+            }
+            return base.GetEditStyle(context);
+        }
+        #endregion
+    }
+}