如何从另一个表单传递数据并返回

Question

我一直在努力让它工作。我确定我写对了

表格 1

private string _temp;
public string Temp
{
    get { return _temp; }
    set { _temp = value; }
}
private void button1_Click(object sender, EventArgs e)
{
    _temp = "test";
}

表格 2

private void button1_Click(object sender, EventArgs e)
{
    Form1 main = new Form1();
    MessageBox.Show(main.Temp);
}

Answer 1

您必须通过 sender 参数获取对 Form1 实例的引用（假设 Form2 的 button1_Click 处理程序附加到 Form1):

//Form2
private void button1_Click(object sender, EventArgs e)
{
    Button button = (Button) sender;
    Form1 main = (Form1) button.FindForm();
    MessageBox.Show(main.Temp);
}

如何从另一个表单传递数据并返回

How to pass data from another form and back

c#

windows-forms-designer