/// <summary>
/// Extension class to extend the Computer Management snap-in property sheet
/// </summary>
public ExtensionToPropertySheet()
{
// In order to receive published data from the primary snap-in, MMC needs to know which
// data items the extension is interested in.
sharedDataItem = new SharedDataItem(@"MMC_SNAPIN_MACHINE_NAME");
this.SharedData.Add(sharedDataItem);
}
this.Control = machinePropertiesControl;
}
/// <summary>
/// Initialize notification for the page. Default implementation is empty.
/// </summary>
protected override void OnInitialize()
{
machinePropertiesControl.RefreshData(sharedDataItem);
}
/// <summary>
/// Sent to every page in the property sheet to indicate that the user has clicked
/// the Apply button and wants all changes to take effect.
protected virtual void OnSharedDataChanged(SharedDataItem item)
{
}
/// <summary>
/// The DisplayName of the extension node will be the computer name
/// published by the primary. Note: this defaults to an empty string for localhost.
/// </summary>
void SetDisplayName(ScopeNode scopeNode, SharedDataItem sharedDataItem)
{
// get buffer containing the machine name
string machineName = Encoding.Unicode.GetString(sharedDataItem.GetData());
// find first null terminated string in buffer.
if (machineName.IndexOf('\0') <= 0)
{
// either not found in buffer or first entry in buffer
machineName = String.Empty;
}
else
{
machineName = machineName.Substring(0, machineName.IndexOf('\0'));
}
// if empty then localhost
if (machineName == string.Empty)
{
scopeNode.DisplayName = "Sample Extension to (localhost)";
}
else
{
scopeNode.DisplayName = "Sample Extension to (" + machineName + ")";
}
}
/// <summary>
/// Respond to changes in shared information from the primary
/// </summary>
/// <param name="sharedDataItem">shared data</param>
protected override void OnSharedDataChanged(SharedDataItem sharedDataItem)
{
// if the machine name has changed, update the extension node name
if (sharedDataItem.ClipboardFormatId == machineNameClipboardFormatId)
{
SetDisplayName(extensionRootNode, sharedDataItem);
}
}
/// <summary>This will get called when the user chooses to monitor a different computer other than
/// the Local Machine.</summary>
protected override void OnSharedDataChanged(SharedDataItem sharedDataItem)
{
// If the machine name has changed, Update the Local Name. OnInitialize will get called again!
if (sharedDataItem.ClipboardFormatId == SnapInShared.MachineName)
{
MachineName = Encoding.Unicode.GetString(sharedDataItem.GetData());
}
}
