Action Class

Provides the base implementation for the IAction interface and implements basic logic for all GcMultiRow actions. This class is abstract (MustInherit in Visual Basic) and so cannot be instantiated.

Syntax

Visual Basic (Declaration)
Visual Basic (Usage)
C#

Public MustInherit Class Action 
   Implements IAction

Dim instance As Action

public abstract class Action : IAction

Remarks

This class is an abstract class that may not be instantiated. It provides a framework that derived classes can use to implement actions for proper operation.

Once implemented, other classes should call CanExecute first to determine whether this action can be executed. Then call Execute to execute the action.

Example

The following code example shows how to manage GcMultiRow control shortcut key settings. The example shows how to change a key's action and how to customize your own action. This code example is part of a larger example provided for the GcMultiRow.ShortcutKeyManager property.

void Form1_Load(object sender, EventArgs e)
        {
            gcMultiRow1.Template = Template.Default;
            gcMultiRow1.RowCount = 5;

            // Register another action to an existing key. Unregister old key first.
            this.gcMultiRow1.ShortcutKeyManager.Unregister(Keys.Enter);
            // Register to new action.
            this.gcMultiRow1.ShortcutKeyManager.Register(new EditThenMoveNextAction(), Keys.Enter);

            // Register an action list. Select all first, and then, copy.
            this.gcMultiRow1.ShortcutKeyManager.Register(new ActionList(SelectionActions.SelectAll, EditingActions.Copy), Keys.Control | Keys.Shift | Keys.C);
        }

        class EditThenMoveNextAction : Action
        {
            public override bool CanExecute(GcMultiRow target)
            {
                return true;
            }

            protected override void OnExecute(GcMultiRow target)
            {
                if (target.IsCurrentCellInEditMode == false && EditingActions.BeginEdit.CanExecute(target))
                {
                    EditingActions.BeginEdit.Execute(target);
                }
                else
                {
                    SelectionActions.MoveToNextCell.Execute(target);
                }
            }
        }

VB.NET

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
        gcMultiRow1.Template = Template.Default
        gcMultiRow1.RowCount = 5

        ' Register another action to an existing key. Unregister old key first.
        Me.gcMultiRow1.ShortcutKeyManager.Unregister(Keys.Enter)
        ' Register to new action.
        Me.gcMultiRow1.ShortcutKeyManager.Register(New EditThenMoveNextAction(), Keys.Enter)

        ' Register an action list. Select all first, and then, copy.
        Me.gcMultiRow1.ShortcutKeyManager.Register(New ActionList(SelectionActions.SelectAll, EditingActions.Copy), Keys.Control Or Keys.Shift Or Keys.C)
    End Sub

    Private Class EditThenMoveNextAction
        Inherits Action
        Public Overloads Overrides Function CanExecute(ByVal target As GcMultiRow) As Boolean
            Return True
        End Function

        Protected Overloads Overrides Sub OnExecute(ByVal target As GcMultiRow)
            If target.IsCurrentCellInEditMode = False AndAlso EditingActions.BeginEdit.CanExecute(target) Then
                EditingActions.BeginEdit.Execute(target)
            Else
                SelectionActions.MoveToNextCell.Execute(target)
            End If
        End Sub
    End Class

Inheritance Hierarchy

System.Object
GrapeCity.Win.MultiRow.Action

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

Action Members
GrapeCity.Win.MultiRow Namespace
IAction Interface
ActionList Class
SelectionActions Class
EditingActions Class
ComponentActions Class
ScrollActions Class
ShortcutKey Structure
ShortcutKeyManager Class