从C＃控制台应用程序显示WinFrm并等待关闭

Question

我试图从C＃中的控制台应用程序显示WinForm（输入框），并等待用户关闭窗体。输入框在打开时处于活动状态并处于活动状态对我来说很重要。 ShowDialog（）在我的情况下不起作用，因为在某些情况下它不会显示为活动表单。所以我想改变我的代码并使用Show（）。通过这种方式，我可以手动查找表单是否处于活动状态，如果不是自己激活它。用ShowDialog（）。我的代码停止了，并且在关闭之前我什么也做不了。

以下是我的代码。它显示输入框，但它被冻结。请问我做错了什么？清除“inputBox.Show（）;”之后的while循环没有做任何事情，但如果我可以设法运行循环，并且输入框不冻结，我会自己整理其余部分。我感谢您的帮助。

public static string mInputBox(string strPrompt, string strTitle, string strDefaultResponse) 
    { 
     string strResponse = null; 
     Form inputBox = new Form(); 
     inputBox.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow; 
     inputBox.ClientSize = new Size(500, 85); 
     inputBox.Text = strTitle; 
     inputBox.StartPosition = System.Windows.Forms.FormStartPosition.Manual; 
     inputBox.Left = (Screen.PrimaryScreen.Bounds.Size.Width/2) - (inputBox.ClientSize.Width/2); 
     inputBox.Top = (Screen.PrimaryScreen.Bounds.Size.Height/2) - (inputBox.ClientSize.Height/2); 

     Label lblPrompt = new Label(); 
     lblPrompt.Text = strPrompt; 
     inputBox.Controls.Add(lblPrompt); 

     TextBox textBox = new TextBox(); 
     textBox.Text = strDefaultResponse; 
     inputBox.Controls.Add(textBox); 

     Button okButton = new Button(); 
     okButton.Text = "&OK"; 
     inputBox.Controls.Add(okButton); 

     Button cancelButton = new Button(); 
     cancelButton.Text = "&Cancel"; 
     inputBox.Controls.Add(cancelButton); 

     okButton.Click += (sender, e) => 
     { 
      strResponse = textBox.Text; 
      inputBox.Close(); 
     }; 

     cancelButton.Click += (sender, e) => 
     { 
      inputBox.Close(); 
     }; 
     inputBox.AcceptButton = okButton; 
     inputBox.CancelButton = cancelButton; 

     SetWindowPos(inputBox.Handle, HWND_TOPMOST, inputBox.Left, inputBox.Top, inputBox.Width, inputBox.Height, NOACTIVATE); 

     inputBox.Show(); 

     while {true} 
      Thread.Sleep(100); 

     Application.DoEvents(); 
     return strResponse; 
    } 

Answer 1

我不知道为什么你正在服用的这条路，我敢肯定有更好的方法来做到这一点（解释一个在结束）。然而，为了使你的代码运行，你应该添加Application.DoEvents()您的循环内

代码应该是这样的：

 var formActive = true; 
     inputBox.FormClosed += (s, e) => formActive = false; 
     inputBox.Show(); 
     inputBox.TopMost = true; 
     inputBox.Activate(); 

     while (formActive) 
     { 
      Thread.Sleep(10); 
      Application.DoEvents(); 
     } 

，整个方法是：

public static string mInputBox(string strPrompt, string strTitle, string strDefaultResponse) 
    { 
     string strResponse = null; 
     Form inputBox = new Form(); 
     inputBox.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow; 
     inputBox.ClientSize = new Size(500, 85); 
     inputBox.Text = strTitle; 
     inputBox.StartPosition = System.Windows.Forms.FormStartPosition.Manual; 
     inputBox.Left = (Screen.PrimaryScreen.Bounds.Size.Width/2) - (inputBox.ClientSize.Width/2); 
     inputBox.Top = (Screen.PrimaryScreen.Bounds.Size.Height/2) - (inputBox.ClientSize.Height/2); 

     Label lblPrompt = new Label(); 
     lblPrompt.Text = strPrompt; 
     inputBox.Controls.Add(lblPrompt); 

     TextBox textBox = new TextBox(); 
     textBox.Text = strDefaultResponse; 
     inputBox.Controls.Add(textBox); 

     Button okButton = new Button(); 
     okButton.Text = "&OK"; 
     inputBox.Controls.Add(okButton); 

     Button cancelButton = new Button(); 
     cancelButton.Text = "&Cancel"; 
     inputBox.Controls.Add(cancelButton); 

     okButton.Click += (sender, e) => 
     { 
      strResponse = textBox.Text; 
      inputBox.Close(); 
     }; 

     cancelButton.Click += (sender, e) => 
     { 
      inputBox.Close(); 
     }; 
     inputBox.AcceptButton = okButton; 
     inputBox.CancelButton = cancelButton; 


     var formActive = true; 
     inputBox.FormClosed += (s, e) => formActive = false; 
     inputBox.Show(); 
     inputBox.TopMost = true; 
     inputBox.Activate(); 

     while (formActive) 
     { 
      Thread.Sleep(10); 
      Application.DoEvents(); 
     } 

     return strResponse; 
    } 

但我认为这将是一个更好的想法，从Form派生并创建一个InputBox并设置TopMost并致电ActivateOnLoad创建您所需的内容，然后简单地拨打ShowDialog，是这样的：

class Inputbox : Form 
     { 

      protected override void OnLoad(EventArgs e) 
      { 
       base.OnLoad(e); 

       TopMost = true; 
       Activate(); 
      } 
     } 

，并更好地把UI代码的InputBox类作为整个代码和用法是这样的：

class Inputbox : Form 
{ 
    public string Response { get; set; } 

    public Inputbox(string strTitle, string strPrompt, string strDefaultResponse) 
    { 
     //add UI and Controls here 

     FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow; 
     ClientSize = new Size(500, 85); 
     Text = strTitle; 
     StartPosition = System.Windows.Forms.FormStartPosition.Manual; 
     Left = (Screen.PrimaryScreen.Bounds.Size.Width/2) - (ClientSize.Width/2); 
     Top = (Screen.PrimaryScreen.Bounds.Size.Height/2) - (ClientSize.Height/2); 

     Label lblPrompt = new Label(); 
     lblPrompt.Text = strPrompt; 
     Controls.Add(lblPrompt); 

     TextBox textBox = new TextBox(); 
     textBox.Text = strDefaultResponse; 
     Controls.Add(textBox); 

     Button okButton = new Button(); 
     okButton.Text = "&OK"; 
     Controls.Add(okButton); 

     Button cancelButton = new Button(); 
     cancelButton.Text = "&Cancel"; 
     Controls.Add(cancelButton); 

     okButton.Click += (sender, e) => 
     { 
      Response = textBox.Text; 
      Close(); 
     }; 

     cancelButton.Click += (sender, e) => 
     { 
      Close(); 
     }; 
     AcceptButton = okButton; 
     CancelButton = cancelButton; 
    } 

    protected override void OnLoad(EventArgs e) 
    { 
     base.OnLoad(e); 

     TopMost = true; 
     Activate(); 
    } 
} 

public static string mInputBox(string strPrompt, string strTitle, string strDefaultResponse) 
{ 
    string strResponse = null; 
    Inputbox inputBox = new Inputbox(strPrompt,strTitle,strDefaultResponse); 

    inputBox.ShowDialog(); 

    return inputBox.Response; 
} 

Answer 2

你需要运行一个消息循环：

Application.Run(inputBox);