Undo Method | ActiveReports 19 .NET Edition

Undo Method

In This Topic

Undoes the last action.

Syntax

Visual Basic
C#

'Declaration
 
Public Sub Undo()

public void Undo()

Remarks

This method reverts the last action that was recorded in the undo stack, effectively "undoing" the most recent change made by the user. After the operation is undone, it is moved to the redo stack, allowing it to be redone if necessary. The Changed event is raised to notify subscribers that the state of the undo/redo history has changed.

Example

// <summary>
/// tbStandard_ButtonClick - calls ExecuteDesignerAction, or the associated function
/// based on the button clicked.
/// </summary>
private void tbStandard_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
{
    if((string)e.Button.Tag == "NewReport")  //New Report was Clicked
    {
        this.ardMain.NewReport();
        this.FillCombo();
    }
    if((string)e.Button.Tag == "Open")  //Open Report was Clicked
    {
        this.OpenReportFile();
    }
    if((string)e.Button.Tag == "Save")  //Save Report was Clicked
    {
        this.SaveReportFile();
    }
    if((string)e.Button.Tag == "SaveAs")  //SaveAs was Clicked
    {
        this.SaveAsReportFile();
    }
    if((string)e.Button.Tag == "ReportSettings")  //ReportSettings was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.ReportSettings);
    }
    if((string)e.Button.Tag == "Undo")  //Undo was Clicked
    {
        this.ardMain.UndoManager.Undo();
    }
    if((string)e.Button.Tag == "Cut")  //Cut was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.EditCut);
    }
    if((string)e.Button.Tag == "Copy")  //Copy was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.EditCopy);
    }
    if((string)e.Button.Tag == "Paste")  //Paste was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.EditPaste);
    }
    if((string)e.Button.Tag == "Delete")  //Delete was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.EditDelete);
    }
    if((string)e.Button.Tag == "ReorderGroups")  //ReorderGroups was Clicked
    {
        this.ardMain.ExecuteAction(DesignerAction.ReorderGroups);
    }    
}

Visual Basic

'tbStandard_ButtonClick - calls ExecuteDesignerAction, or the associated function
'based on the button clicked.
Private Sub tbStandard_ButtonClick(ByVal sender As Object, ByVal e As System.Windows.Forms.ToolBarButtonClickEventArgs) Handles tbStandard.ButtonClick
    If CStr(e.Button.Tag) = "NewReport" Then 'New Report was Clicked
        Me.ardMain.NewReport()
        Me.FillCombo()
    End If
    If CStr(e.Button.Tag) = "Open" Then 'Open Report was Clicked
        Me.OpenReportFile()
    End If
    If CStr(e.Button.Tag) = "Save" Then 'Save Report was Clicked
        Me.SaveReportFile()
    End If
    If CStr(e.Button.Tag) = "SaveAs" Then 'SaveAs was Clicked
        Me.SaveAsReportFile()
    End If
    If CStr(e.Button.Tag) = "ReportSettings" Then 'ReportSettings was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.ReportSettings)
    End If
    If CStr(e.Button.Tag) = "Undo" Then 'Undo was Clicked
        Me.ardMain.UndoManager.Undo()
    End If
    If CStr(e.Button.Tag) = "Cut" Then 'Cut was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.EditCut)
    End If
    If CStr(e.Button.Tag) = "Copy" Then 'Copy was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.EditCopy)
    End If
    If CStr(e.Button.Tag) = "Paste" Then 'Paste was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.EditPaste)
    End If
    If CStr(e.Button.Tag) = "Delete" Then 'Delete was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.EditDelete)
    End If
    If CStr(e.Button.Tag) = "ReorderGroups" Then 'ReorderGroups was Clicked
        Me.ardMain.ExecuteAction(DesignerAction.ReorderGroups)
    End If
End Sub 'tbStandard_ButtonClick

Reference

UndoManager Class
UndoManager Members