在C#中返回Windows窗体之间的结果

Question

我有两个Windows窗体(MyApp,Generator),我需要从MyApp调用Generator

Form gen = new Generator();
gen.Show();
string result = gen.IDontKnowWhatToDoHere();

我的Generator.cs表单有三个TextBox和一个Button Ok,所以当用户在三个TextBox中键入一些文本时,单击Ok我想在这三个TextBox中输入Text.

你有什么想法我能做到这一点吗？

谢谢.

Answer 1

我通常使用这种模式:

TResult result = Generator.AskResult();

class Generator : Form
{
    // set this result appropriately
    private TResult Result { get; set; }
    public static TResult AskResult()
    {
        var form = new Generator();
        form.ShowDialog();
        return form.Result; // or fetch a control's value directly
    }
}

这使它在单个语句中工作,类似于MessageBox,并且不需要公开任何控件.您还可以将任何其他数据作为参数包含在静态方法中,并将它们传递给表单的构造函数或相应地设置属性.

另一个好处包括,如果需要,可以重用表单的实例.

Answer 2

class Generator : Form
{
    public string Text1 { get; private set; }

    void ok_Click (object sender, EventArgs)
    {
        this.Text1 = txt1.Text;
        ...
        this.Close();
    }
}

Form gen = new Generator();
gen.ShowDialog();
string text1 = gen.Text1;
...

class TextInfo
{
    public string Text1 { get; set; }
    ...
}

class Generator : Form
{
    public TextInfo Textinfo { get; private set; }

    public Generator(TextInfo info)
    {
        this.TextInfo = info;
    }

    void ok_Click (object sender, EventArgs)
    {
        this.TextInfo.Text1 = txt1.Text;
        ...
        this.Close();
    }
}

TextInfo info = new TextInfo();
Form gen = new Generator(info);
gen.ShowDialog();
string text1 = info.Text1;