[英]Show WinFrm from C# console application and wait to close
我正在尝试从C#中的控制台应用程序显示WinForm(输入框),然后等到用户关闭表单。 对我来说重要的是,输入框应在顶部并在打开时处于活动状态。 在我的情况下,ShowDialog()无法正常工作,因为在某些情况下,它没有显示为活动形式。 因此,我想更改代码并使用Show()。 通过这种方式,我可以手动确定表单是否处于活动状态,以及是否自己激活该表单。 使用ShowDialog()。 我的代码停止了,直到from被关闭,我什么也不能做。
下面是我的代码。 它的确显示了输入框,但已冻结。 请问我做错了什么? 如“ inputBox.Show();”之后的while循环一样 没有做任何事情,但是如果我可以设法运行循环并且输入框没有冻结,那么我将自己整理其余部分。 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;
}
我不确定您为什么选择这条路线,但我确定有更好的方法(最后解释一下)。 但是,要使代码运行,应在循环内添加Application.DoEvents()
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();
}
整个方法将是:
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;
}
但是我认为从Form
派生并创建InputBox并设置TopMost
并调用Activate
OnLoad
来创建所需的东西是一个更好的主意,然后只需调用ShowDialog
,例如:
class Inputbox : Form
{
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
TopMost = true;
Activate();
}
}
最好将UI代码放入InputBox类中,因为整个代码和用法如下所示:
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;
}
您需要运行一个消息循环:
Application.Run(inputBox);
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