DataGridView.ProcessRightKey(Keys) 方法

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

處理向右鍵。

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

參數

keyData

Keys

Keys 值的位元 (Bitwise) 組合，表示要處理的按鍵。

傳回

Boolean

如果已處理按鍵，則為 true；否則為 false。

例外狀況

InvalidCastException

向右鍵會讓控制項進入編輯模式，但新的目前儲存格的 EditType 屬性不會指出衍生自 Control 的類別並實作 IDataGridViewEditingControl。

Exception

這個動作會認可儲存格值或進入編輯模式，但是資料來源中的錯誤會阻止這個動作，而且 DataError 事件沒有處理常式或處理常式已將 ThrowException 屬性設定為 true。

範例

下列程式碼範例示範如何覆寫 ProcessDataGridViewKey 和 ProcessDialogKey 方法，以變更子類別中 DataGridView ENTER 鍵的行為。 在此範例中，ENTER 鍵的行為與向右鍵相同，讓使用者更容易編輯單一資料列中的多個儲存格。

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

另請參閱

• DataGridView 控制項 (Windows Form)