WPF弹出自定义窗口的方法

namespace WorkflowBuilder.MyWindows
{
  /// <summary>
  /// Interaction logic for InputStringWindow.xaml
  /// </summary>
  public partial class InputStringWindow : Window
  {
    public InputStringWindow()
    {
      InitializeComponent();
      //设置默认输入焦点
      FocusManager.SetFocusedElement(this,tbContent);
    }
    private void button1_Click(object sender, RoutedEventArgs e)
    {
      tbContent.Text = tbContent.Text.Trim();
      if (tbContent.Text.Length > 0)
      {
        Close();//关闭窗口
      }
      else
      {
        MessageBox.Show("输入的字符串长度不能为空！");
      }
    }
  }
}

InputStringWindow isw = new InputStringWindow();
isw.Title = "给新页面命名";
isw.ShowDialog();//模式，弹出！
//isw.Show()//无模式，弹出！