DataGridView.ProcessRightKey(Keys) 方法

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

处理向右键。

protected:
 bool ProcessRightKey(System::Windows::Forms::Keys keyData);

protected bool ProcessRightKey (System.Windows.Forms.Keys keyData);

member this.ProcessRightKey : System.Windows.Forms.Keys -> bool

Protected Function ProcessRightKey (keyData As Keys) As Boolean

参数

keyData

Keys

Keys 值的按位组合，这些值表示要处理的一个或多个键。

返回

Boolean

如果已处理该键，则为 true；否则为 false。

例外

InvalidCastException

“向右箭头”键将导致该控件进入编辑模式，但当前新的单元格的 EditType 属性不指示派生自 Control 并实现 IDataGridViewEditingControl 的类。

Exception

此操作将提交一个单元格值或者进入编辑模式，但是数据源中的错误禁止执行此操作，DataError 事件没有处理程序，或者处理程序已将 ThrowException 属性设置为 true。

示例

下面的代码示例演示如何通过重写 ProcessDataGridViewKey 和 ProcessDialogKey 方法来更改子类中 DataGridView Enter 键的行为。 在此示例中，Enter 键的行为与向右键相同，使用户能够更轻松地编辑单行数据中的多个单元格。

public class CustomDataGridView : DataGridView
{
    protected override bool ProcessDialogKey(Keys keyData)
    {
        // Extract the key code from the key value. 
        Keys key = (keyData & Keys.KeyCode);

        // Handle the ENTER key as if it were a RIGHT ARROW key. 
        if (key == Keys.Enter)
        {
            return this.ProcessRightKey(keyData);
        }
        return base.ProcessDialogKey(keyData);
    }

    protected override bool ProcessDataGridViewKey(KeyEventArgs e)
    {
        // Handle the ENTER key as if it were a RIGHT ARROW key. 
        if (e.KeyCode == Keys.Enter)
        {
            return this.ProcessRightKey(e.KeyData);
        }
        return base.ProcessDataGridViewKey(e);
    }
}

Public Class CustomDataGridView
    Inherits DataGridView

    <System.Security.Permissions.UIPermission( _
        System.Security.Permissions.SecurityAction.LinkDemand, _
        Window:=System.Security.Permissions.UIPermissionWindow.AllWindows)> _
    Protected Overrides Function ProcessDialogKey( _
        ByVal keyData As Keys) As Boolean

        ' Extract the key code from the key value. 
        Dim key As Keys = keyData And Keys.KeyCode

        ' Handle the ENTER key as if it were a RIGHT ARROW key. 
        If key = Keys.Enter Then
            Return Me.ProcessRightKey(keyData)
        End If

        Return MyBase.ProcessDialogKey(keyData)

    End Function

    <System.Security.Permissions.SecurityPermission( _
        System.Security.Permissions.SecurityAction.LinkDemand, Flags:= _
        System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)> _
    Protected Overrides Function ProcessDataGridViewKey( _
        ByVal e As System.Windows.Forms.KeyEventArgs) As Boolean

        ' Handle the ENTER key as if it were a RIGHT ARROW key. 
        If e.KeyCode = Keys.Enter Then
            Return Me.ProcessRightKey(e.KeyData)
        End If

        Return MyBase.ProcessDataGridViewKey(e)

    End Function

End Class

另请参阅

• DataGridView 控件（Windows 窗体）