Question

将滑块绑定到文本框：

textbox.Text = Slider1.Value.ToString();

但是如何将文本框绑定到滑块？

Answer 1

建立@Dmitry，尝试这样的事情：

private void textbox_TextChanged(object sender, EventArgs e)
{
   try
   {
      // Convert the text to a Double and assign to slider
      double value;
      if (double.TryParse(textbox.Text, out value))
      {
         Slider1.Value = value;

         // If the number is valid, display it in Black.
         textBox.ForeColor = Color.Black;
      }
      else
      {
         // If the number is invalid, display it in Red.
         textBox.ForeColor = Color.Red;
      }
   }
   catch
   {
      // If there is an error, display the text using the system colors.
      textBox.ForeColor = SystemColors.ControlText;
   }
}

并且不要忘记将此事件代码连接到TextChanged事件。

textbox.TextChanged += new System.EventHandler(this.textBox_TextChanged);

Answer 2

如果您正在谈论WPF，那么您可以在控制器上创建一个属性：

    private int _Text;
    public int Text
    {
        get
        {
            return this._Text;
        }
        set
        {
            if (this._Text != value)
            {
                this._Text = value;
                this.OnPropertyChanged("Text");
            }
        }
    }

然后像这样绑定Slider和TextBox：

<TextBox Text={Binding Text}" />
<Slider Value={Binding Text}" />

确保您的控制器是您的xaml.cs文件中的DataContext ...设置它：

Controller = new MyController();
this.DataContext = Controller;

TextBox值为Slider.Value

2 个答案: