如何从库中的函数获取Windows窗体中的用户输入
本文关键字:Windows 窗体 用户 输入 获取 函数 | 更新日期: 2023-09-27 18:16:35
我有一个执行各种任务的类库。我希望这些任务中的一些发生在响应用户输入从Windows窗体。到目前为止,我所尝试的是在库中设置输入接口,如下所示:
public interface IInputter
{
string sendInput();
}
以以下形式实现接口:
public partial class Form1 : Form,IInputter
{
string sentText=null;
public Form1()
{
InitializeComponent();
}
public string sendInput()
{
string inputText=sentText;
sentText=null;
return inputText;
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "Excel files (*.xls*)|*.xls*";
DialogResult dr = ofd.ShowDialog();
if (dr == DialogResult.OK)
{
sentText = ofd.FileName;
}
}
}
当从表单代码调用库函数时,将表单作为参数传递:
public partial class StartForm : Form
{
public StartForm()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Form1 f1 = new Form1();
f1.Show();
Main main = new Main();
main.main(f1);
}
}
然后从库函数中调用输入函数:
public string main(IInputter inputter)
{
do
{
testBk = inputter.sendInput();
}
while (testBk == null);
return testBk;
}
Form1
未完全加载;控件应该是空的,所以While
循环只是无限运行,没有任何方式让表单通过IInputter.sendInput()
函数向库函数发送输入。
我敢肯定,必须有一个更"内置"的方式来建立一个数据流,可以从一个库的接口实现的形式内访问;我错过了什么?
您的表单是交互式的,因此您的界面将更有意义公开事件:
public interface IInputter
{
event EventHandler<InputReceivedEventArgs> ReceivedInput;
}
public class InputReceivedEventArgs : EventArgs
{
public InputReceivedEventArgs(string text)
{
this.Text = text;
}
public string Text { get; private set; }
}
public partial class Form1 : Form, IInputter
{
public event EventHandler<InputReceivedEventArgs> ReceivedInput = delegate { };
private void button1_Click(object sender, EventArgs e)
{
var dialog = new OpenFileDialog { Filter = "Excel files (*.xls*)|*.xls*" };
var dialogResult = dialog.ShowDialog();
if (dialogResult == DialogResult.OK)
{
ReceivedInput(this, new InputReceivedEventArgs(ofd.FileName));
sentText = ofd.FileName;
}
}
}
然后,消费:
public string main(IInputter inputter)
{
string receivedInput = null;
inputter.ReceivedInput += (s, e) => YourLibrary.DoSomething(e.Text);
}