/// <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);
}
/// <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>
/// Update the node with the controls values
/// </summary>
/// <param name="sharedDataItem">Node being updated by property page</param>
public void UpdateData(SharedDataItem sharedDataItem)
{
// In this sample the primary does not allow its data to be updated.
// However, you can create primary nodes with updatable shared data
// that would be accessed with a line such as the one below.
// sharedDataItem.SetData(Encoding.Unicode.GetBytes(this.MachineName.Text));
machinePropertyPage.Dirty = false;
}
/// <summary>
/// Constructor for the page.
/// </summary>
public MachinePropertyPage(SharedDataItem parentSharedDataItem)
{
sharedDataItem = parentSharedDataItem;
// setup property page container stuff
this.Title = "Property Sheet Extension Sample";
// setup contained control and hand it a reference to its parent (This propertypage)
machinePropertiesControl = new MachinePropertiesControl(this);
this.Control = machinePropertiesControl;
}
protected IDictionary <String, IModelContainer> ReadIntern(String token)
{
SharedDataItem sharedDataItem = DictionaryExtension.ValueOrDefault(tokenToDataDict, token);
if (sharedDataItem == null)
{
return(null);
}
sharedDataItem.lastAccess = DateTime.Now;
return(sharedDataItem.data);
}
public String Put(IDictionary <String, IModelContainer> data)
{
String token = System.Guid.NewGuid().ToString();
SharedDataItem sharedDataItem = new SharedDataItem(data);
sharedDataItem.lastAccess = DateTime.Now;
writeLock.Lock();
try
{
tokenToDataDict.Add(token, sharedDataItem);
tokenToHandOnsDict.Add(token, new IdentityHashSet <ISharedDataHandOn>());
}
finally
{
writeLock.Unlock();
}
return(token);
}
/// <summary>
/// The computer name is published by the primary.
/// Note: this defaults to an empty string for localhost.
/// </summary>
/// <param name="sharedDataItem"></param>
private string GetMachineName(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)
{
machineName = "localhost";
}
return(machineName);
}
/// <summary>
/// Populate control values from the SelectionObject (set in UserListView.SelectionOnChanged)
/// </summary>
/// <param name="sharedDataItem"></param>
public void RefreshData(SharedDataItem sharedDataItem)
{
this.MachineName.Text = GetMachineName(sharedDataItem);
machinePropertyPage.Dirty = false;
}
/// <summary>
/// Update the node with the controls values
/// </summary>
/// <param name="sharedDataItem">Node being updated by property page</param>
public void UpdateData(SharedDataItem sharedDataItem)
{
// In this sample the primary does not allow its data to be updated.
// However, you can create primary nodes with updatable shared data
// that would be accessed with a line such as the one below.
// sharedDataItem.SetData(Encoding.Unicode.GetBytes(this.MachineName.Text));
machinePropertyPage.Dirty = false;
}
/// <summary>
/// Populate control values from the SelectionObject (set in UserListView.SelectionOnChanged)
/// </summary>
/// <param name="sharedDataItem"></param>
public void RefreshData(SharedDataItem sharedDataItem)
{
this.MachineName.Text = GetMachineName(sharedDataItem);
machinePropertyPage.Dirty = false;
}
/// <summary>
/// The computer name is published by the primary.
/// Note: this defaults to an empty string for localhost.
/// </summary>
/// <param name="sharedDataItem"></param>
private string GetMachineName(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)
{
machineName = "localhost";
}
return (machineName);
}
