Question

我试图用这段代码检测C＃中打开的表单;

from unittest.mock import MagicMock

class NuclearManager():
    def __init__(self, reactor):
        print("manager creating the nuclear reactor")
        self.reactor = reactor

    def start(self):
        print("manager starting the nuclear reactor")
        self.reactor.start()


def test():
    mock_reactor = MagicMock()
    nuke = NuclearManager(mock_reactor)
    nuke.start()
    nuke.start()

    # These two prints would actually be asserts of some sort
    print(mock_reactor.mock_calls)
    print(mock_reactor.start.call_count)

test()

但是我的表单有manager creating the nuclear reactor manager starting the nuclear reactor manager starting the nuclear reactor [call.start(), call.start()] 2，我的代码无效。

如果表单具有属性if ((Application.OpenForms["Form1"] as Form1) != null) { Application.OpenForms["Form1"].Close(); }？

，如何检测已打开或已关闭的表单？

Answer 1

您需要做的是获得应用程序级别获取表单可以执行以下操作。

 FormCollection openforms = Application.OpenForms;

    foreach (Form frms in openforms)
    {
if (frms.Name=="frmsomething")
{
frms.close();
}

    //What ever you want do with individual forms in frms object
    }

Answer 2

似乎问题是ShowInTaskBar = false导致.NET忽略打开表单列表中的表单。但是，您可以按照this SO answer中描述的方式使用Windows API将表单设置为不显示在任务栏中。

Answer 3

Form2 form
private void btn1_Click(object sender, EventArgs e)
    {
        form = new Form2();
        form.Show();
    }

private void btn2_Click(object sender, EventArgs e)
    {
        if(form != null && !form.IsDisposed){
              form.Close();
        }
    }

c＃如何检测打开的表单

3 个答案: