C# 按 Enter 移动到下一个控件

Press Enter to move to next control

提问by david.healed

I have a few TextBox on the WinForm. I would like the focus to move to the next control when Enter key is pressed? Whenever a textbox gains control, it will also select the text, so that any editing will replace the current one.

我在 WinForm 上有几个 TextBox。当按下 Enter 键时，我希望焦点移动到下一个控件吗？每当文本框获得控制权时，它也会选择文本，以便任何编辑都将替换当前文本。

What is the best way to do this?

做这个的最好方式是什么？

采纳答案by ng5000

Tab as Enter: create a user control which inherits textbox, override the KeyPressmethod. If the user presses enter you can either call SendKeys.Send("{TAB}")or System.Windows.Forms.Control.SelectNextControl(). Note you can achieve the same using the KeyPressevent.

Tab as Enter：创建一个继承文本框的用户控件，覆盖该KeyPress方法。如果用户按 Enter，您可以调用SendKeys.Send("{TAB}")或System.Windows.Forms.Control.SelectNextControl()。请注意，您可以使用该KeyPress事件实现相同的目的。

Focus Entire text: Again, via override or events, target the GotFocusevent and then call TextBox.Selectmethod.

聚焦整个文本：同样，通过覆盖或事件，定位GotFocus事件，然后调用TextBox.Select方法。

回答by micahtan

You can put a KeyPresshandler on your TextBoxes, and see which key was used.

您可以KeyPress在 TextBox 上放置一个处理程序，并查看使用了哪个键。

To handle the text selection, put a handler on the GotFocusevent.

要处理文本选择，请在GotFocus事件上放置一个处理程序。

You may also want to consider how to (or if you need to) handle multi-line TextBoxes.

您可能还需要考虑如何（或如果需要）处理多行文本框。

回答by Patrick McDonald

In a KeyPress event, if the user pressed Enter, call

在 KeyPress 事件中，如果用户按下 Enter，则调用

SendKeys.Send("{TAB}")

Nicest way to implement automatically selecting the text on receiving focus is to create a subclass of TextBox in your project with the following override:

在接收焦点时实现自动选择文本的最好方法是使用以下覆盖在您的项目中创建 TextBox 的子类：

Protected Overrides Sub OnGotFocus(ByVal e As System.EventArgs)
    SelectionStart = 0
    SelectionLength = Text.Length
    MyBase.OnGotFocus(e)
End Sub

Then use this custom TextBox in place of the WinForms standard TextBox on all your Forms.

然后在所有表单上使用此自定义 TextBox 代替 WinForms 标准 TextBox。

回答by Stanislav Despotovic

This may help:

这可能有帮助：

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    //
    // Detect the KeyEventArg's key enumerated constant.
    //
    if (e.KeyCode == Keys.Enter)
    {
        MessageBox.Show("You pressed enter! Good job!");
    }
}

回答by jim31415

A couple of code examples in C# using SelectNextControl.

在 C# 中使用SelectNextControl 的几个代码示例。

The first moves to the next control when ENTERis pressed.

当按下ENTER时，第一个移动到下一个控件。

    private void Control_KeyUp( object sender, KeyEventArgs e )
    {
        if( (e.KeyCode == Keys.Enter) || (e.KeyCode == Keys.Return) )
        {
            this.SelectNextControl( (Control)sender, true, true, true, true );
        }
    }

The second uses the UPand DOWNarrows to move through the controls.

第二个使用向上和向下箭头在控件之间移动。

    private void Control_KeyUp( object sender, KeyEventArgs e )
    {
        if( e.KeyCode == Keys.Up )
        {
            this.SelectNextControl( (Control)sender, false, true, true, true );
        }
        else if( e.KeyCode == Keys.Down )
        {
            this.SelectNextControl( (Control)sender, true, true, true, true );
        }
    }

See MSDN SelectNextControl Method

参见 MSDN SelectNextControl 方法

回答by Remi Smirra

You could also write your own Control for this, in case you want to use this more often. Assuming you have multiple TextBoxes in a Grid, it would look something like this:

您也可以为此编写自己的控件，以防您想更频繁地使用它。假设您在一个网格中有多个文本框，它看起来像这样：

public class AdvanceOnEnterTextBox : UserControl
{

    TextBox _TextBox;
    public static readonly DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof(String), typeof(AdvanceOnEnterTextBox), null);
    public static readonly DependencyProperty InputScopeProperty = DependencyProperty.Register("InputScope", typeof(InputScope), typeof(AdvanceOnEnterTextBox), null);


    public AdvanceOnEnterTextBox()
    {
        _TextBox = new TextBox();
        _TextBox.KeyDown += customKeyDown;
        Content = _TextBox;

    }


    /// <summary>
    /// Text for the TextBox
    /// </summary>
    public String Text
    {
        get { return _TextBox.Text; }
        set { _TextBox.Text = value; }
    }


    /// <summary>
    /// Inputscope for the Custom Textbox
    /// </summary>
    public InputScope InputScope
    {
        get { return _TextBox.InputScope; }
        set { _TextBox.InputScope = value; }
    }


    void customKeyDown(object sender, KeyEventArgs e)
    {
        if (!e.Key.Equals(Key.Enter)) return;

        var element = ((TextBox)sender).Parent as AdvanceOnEnterTextBox;
        if (element != null)
        {
            int currentElementPosition = ((Grid)element.Parent).Children.IndexOf(element);
            try
            {
                // Jump to the next AdvanceOnEnterTextBox (assuming, that Labels are inbetween).
                ((AdvanceOnEnterTextBox)((Grid)element.Parent).Children.ElementAt(currentElementPosition + 2)).Focus();
            }
            catch (Exception)
            {
                // Close Keypad if this was the last AdvanceOnEnterTextBox
                ((AdvanceOnEnterTextBox)((Grid)element.Parent).Children.ElementAt(currentElementPosition)).IsEnabled = false;
                ((AdvanceOnEnterTextBox)((Grid)element.Parent).Children.ElementAt(currentElementPosition)).IsEnabled = true;
            }
        }
    }
}

回答by Maahdev

Try to use:

尝试使用：

SendKeys.Send("{TAB}")

回答by Debendra Dash

private void txt_invoice_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
            txt_date.Focus();
    }

    private void txt_date_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
            txt_patientname.Focus();
    }

}

}