ToolStripManager.RevertMerge Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Undoes a merging of two ToolStrip objects.

Overloads

RevertMerge(String)	Undoes a merging of two ToolStrip objects, returning the ToolStrip with the specified name to its state before the merge and nullifying all previous merge operations.
RevertMerge(ToolStrip)	Undoes a merging of two ToolStrip objects, returning the specified ToolStrip to its state before the merge and nullifying all previous merge operations.
RevertMerge(ToolStrip, ToolStrip)	Undoes a merging of two ToolStrip objects, returning both ToolStrip controls to their state before the merge and nullifying all previous merge operations.

RevertMerge(String)

Undoes a merging of two ToolStrip objects, returning the ToolStrip with the specified name to its state before the merge and nullifying all previous merge operations.

public:
 static bool RevertMerge(System::String ^ targetName);

public static bool RevertMerge (string targetName);

static member RevertMerge : string -> bool

Public Shared Function RevertMerge (targetName As String) As Boolean

Parameters

targetName

String

The name of the ToolStripItem for which to undo a merge operation.

Returns

Boolean

true if the undoing of the merge is successful; otherwise, false.

Remarks

The ToolStrip.AllowMerge property must be set to true for both ToolStrip objects, or this method returns false.

See also

• Merge(ToolStrip, ToolStrip)

RevertMerge(ToolStrip)

Undoes a merging of two ToolStrip objects, returning the specified ToolStrip to its state before the merge and nullifying all previous merge operations.

public:
 static bool RevertMerge(System::Windows::Forms::ToolStrip ^ targetToolStrip);

public static bool RevertMerge (System.Windows.Forms.ToolStrip targetToolStrip);

static member RevertMerge : System.Windows.Forms.ToolStrip -> bool

Public Shared Function RevertMerge (targetToolStrip As ToolStrip) As Boolean

Parameters

targetToolStrip

ToolStrip

The ToolStripItem for which to undo a merge operation.

Returns

Boolean

true if the undoing of the merge is successful; otherwise, false.

Examples

The following code example undoes the merging of menu items. This example is part of a larger example available in the ToolStripManager class overview.

private MergeSample CurrentSample
{
    get { return currentSample; }
    set
    {
        if (currentSample != value)
        {
            bool resetRequired = false;

            if (currentSample == MergeSample.MatchOnly)
            {
                resetRequired = true;
            }
            currentSample = value;
            // Undo previous merge, if any.
            ToolStripManager.RevertMerge(cmsBase, cmsItemsToMerge);
            if (resetRequired)
            {
                RebuildItemsToMerge();
            }

            switch (currentSample)
            {
                case MergeSample.None:
                    return;
                case MergeSample.Append:
                    ScenarioText = "This sample adds items to the end of the list using MergeAction.Append.\r\n\r\nThis is the default setting for MergeAction. A typical scenario is adding menu items to the end of the menu when some part of the program is activated.";
                    ShowAppendSample();
                    break;
                case MergeSample.InsertInSameLocation:
                    ScenarioText = "This sample adds items to the middle of the list using MergeAction.Insert.\r\n\r\nNotice here how the items are added in reverse order: four, three, two, one. This is because they all have the same merge index.\r\n\r\nA typical scenario is adding menu items to the middle or beginning of the menu when some part of the program is activated. ";
                    ShowInsertInSameLocationSample();
                    break;
                case MergeSample.InsertInSameLocationPreservingOrder:
                    ScenarioText = "This sample is the same as InsertInSameLocation, except the items are added in normal order by increasing the MergeIndex of \"two merged items\" to be 3, \"three merged items\" to be 5, and so on.\r\n  You could also add the original items backwards to the source ContextMenuStrip.";
                    ShowInsertInSameLocationPreservingOrderSample();
                    break;
                case MergeSample.ReplacingItems:
                    ScenarioText = "This sample replaces a menu item using MergeAction.Replace. Use this for the MDI scenario where saving does something completely different.\r\n\r\nMatching is based on the Text property. If there is no text match, merging reverts to MergeIndex.";
                    ShowReplaceSample();
                    break;
                case MergeSample.MatchOnly:
                    ScenarioText = "This sample adds only the subitems from the child to the target ContextMenuStrip.";
                    ShowMatchOnlySample();
                    break;
            }
            // Reapply with the new settings.
            ToolStripManager.Merge(cmsItemsToMerge, cmsBase);
        }
    }
}

Private Property CurrentSample() As MergeSample
   Get
      Return currentSample1
   End Get
   Set
      If currentSample1 <> value Then
         Dim resetRequired As Boolean = False
         
         If currentSample1 = MergeSample.MatchOnly Then
            resetRequired = True
         End If
         currentSample1 = value
         ' Undo previous merge, if any.
         ToolStripManager.RevertMerge(cmsBase, cmsItemsToMerge)
         If resetRequired Then
            RebuildItemsToMerge()
         End If
         
         Select Case currentSample1
            Case MergeSample.None
                  Return
            Case MergeSample.Append
               ScenarioText = "This sample adds items to the end of the list using MergeAction.Append." + ControlChars.Cr + ControlChars.Lf + ControlChars.Cr + ControlChars.Lf + "This is the default setting for MergeAction. A typical scenario is adding menu items to the end of the menu when some part of the program is activated."
               ShowAppendSample()
            Case MergeSample.InsertInSameLocation
               ScenarioText = "This sample adds items to the middle of the list using MergeAction.Insert." + ControlChars.Cr + ControlChars.Lf + ControlChars.Cr + ControlChars.Lf + "Notice here how the items are added in reverse order: four, three, two, one. This is because they all have the same merge index." + ControlChars.Cr + ControlChars.Lf + ControlChars.Cr + ControlChars.Lf + "A typical scenario is adding menu items to the middle or beginning of the menu when some part of the program is activated. "
               ShowInsertInSameLocationSample()
            Case MergeSample.InsertInSameLocationPreservingOrder
               ScenarioText = "This sample is the same as InsertInSameLocation, except the items are added in normal order by increasing the MergeIndex of ""two merged items"" to be 3, ""three merged items"" to be 5, and so on." + ControlChars.Cr + ControlChars.Lf + "  You could also add the original items backwards to the source ContextMenuStrip."
               ShowInsertInSameLocationPreservingOrderSample()
            Case MergeSample.ReplacingItems
               ScenarioText = "This sample replaces a menu item using MergeAction.Replace. Use this for the MDI scenario where saving does something completely different." + ControlChars.Cr + ControlChars.Lf + ControlChars.Cr + ControlChars.Lf + "Matching is based on the Text property. If there is no text match, merging reverts to MergeIndex."
               ShowReplaceSample()
            Case MergeSample.MatchOnly
               ScenarioText = "This sample adds only the subitems from the child to the target ContextMenuStrip."
               ShowMatchOnlySample()
         End Select
         
         ' Reapply with the new settings.
         ToolStripManager.Merge(cmsItemsToMerge, cmsBase)
      End If
   End Set
End Property

Remarks

The ToolStrip.AllowMerge property must be set to true for both ToolStrip objects, or this method returns false.

See also

• Merge(ToolStrip, String)

RevertMerge(ToolStrip, ToolStrip)

Undoes a merging of two ToolStrip objects, returning both ToolStrip controls to their state before the merge and nullifying all previous merge operations.

public:
 static bool RevertMerge(System::Windows::Forms::ToolStrip ^ targetToolStrip, System::Windows::Forms::ToolStrip ^ sourceToolStrip);

public static bool RevertMerge (System.Windows.Forms.ToolStrip targetToolStrip, System.Windows.Forms.ToolStrip sourceToolStrip);

static member RevertMerge : System.Windows.Forms.ToolStrip * System.Windows.Forms.ToolStrip -> bool

Public Shared Function RevertMerge (targetToolStrip As ToolStrip, sourceToolStrip As ToolStrip) As Boolean

Parameters

targetToolStrip

ToolStrip

The name of the ToolStripItem for which to undo a merge operation.

sourceToolStrip

ToolStrip

The ToolStrip that was merged with the targetToolStrip.

Returns

Boolean

true if the undoing of the merge is successful; otherwise, false.

Exceptions

ArgumentNullException

The sourceToolStrip is null.

Remarks

The ToolStrip.AllowMerge property must be set to true for both ToolStrip objects, or this method returns false.