private static WindowsTimeZoneCollection LoadTimeZonesFromRegistry()
{
WindowsTimeZoneCollection tzs = new WindowsTimeZoneCollection();
RegistryKey timeZoneListKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones", false);
string[] timeZoneKeyNames = timeZoneListKey.GetSubKeyNames();
foreach (string timeZoneKeyName in timeZoneKeyNames)
{
RegistryKey timeZoneKey = timeZoneListKey.OpenSubKey(timeZoneKeyName);
WindowsTimeZone windowsTimeZone =
new WindowsTimeZone(
timeZoneKey.GetValue("Display") as string,
timeZoneKey.GetValue("Dlt") as string,
timeZoneKey.GetValue("Std") as string,
(int)timeZoneKey.GetValue("Index"),
timeZoneKey.GetValue("TZI") as byte[]);
tzs.Add(windowsTimeZone);
}
tzs.SortByTimeZoneBias();
return(tzs);
}
public WindowsTimeZone GetConfiguredTimeZone()
{
if (windowsTimeZone == null)
{
windowsTimeZone = WindowsTimeZone.TimeZones.GetByZoneIndex(displayTimeZoneIndex) as WindowsTimeZone;
}
return windowsTimeZone;
}
/// <summary>
/// Return the zero-based index of the first occurrence of a specific value
/// in this WindowsTimeZoneCollection
/// </summary>
/// <param name="value">
/// The WindowsTimeZone value to locate in the WindowsTimeZoneCollection.
/// </param>
/// <returns>
/// The zero-based index of the first occurrence of the _ELEMENT value if found;
/// -1 otherwise.
/// </returns>
public virtual int IndexOf(WindowsTimeZone value)
{
return this.List.IndexOf(value);
}
/// <summary>
/// Determines whether a specfic WindowsTimeZone value is in this WindowsTimeZoneCollection.
/// </summary>
/// <param name="value">
/// The WindowsTimeZone value to locate in this WindowsTimeZoneCollection.
/// </param>
/// <returns>
/// true if value is found in this WindowsTimeZoneCollection;
/// false otherwise.
/// </returns>
public virtual bool Contains(WindowsTimeZone value)
{
return this.List.Contains(value);
}
/// <summary>
/// Adds an instance of type WindowsTimeZone to the end of this WindowsTimeZoneCollection.
/// </summary>
/// <param name="value">
/// The WindowsTimeZone to be added to the end of this WindowsTimeZoneCollection.
/// </param>
public virtual void Add(WindowsTimeZone value)
{
this.List.Add(value);
}
private static WindowsTimeZoneCollection LoadTimeZonesFromRegistry()
{
WindowsTimeZoneCollection tzs = new WindowsTimeZoneCollection();
RegistryKey timeZoneListKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones", false);
string[] timeZoneKeyNames = timeZoneListKey.GetSubKeyNames();
foreach (string timeZoneKeyName in timeZoneKeyNames)
{
RegistryKey timeZoneKey = timeZoneListKey.OpenSubKey(timeZoneKeyName);
WindowsTimeZone windowsTimeZone =
new WindowsTimeZone(
timeZoneKey.GetValue("Display") as string,
timeZoneKey.GetValue("Dlt") as string,
timeZoneKey.GetValue("Std") as string,
(int)timeZoneKey.GetValue("Index" ),
timeZoneKey.GetValue("TZI") as byte[] );
tzs.Add( windowsTimeZone );
}
tzs.SortByTimeZoneBias();
return tzs;
}
