Form1有一个按钮如果我们单击该按钮它将显示另一个窗体（Form2） [英] Form1 had one button if we click that button it wil show another form(Form2)

问题描述

我的问题是，当我们点击按钮时，前一个表单2将被关闭，新的form2应该打开如何在Windows窗体中编写代码

and my question is when ever we click on button previous form 2 be closed and new form2 should be open how to write code in windows forms

推荐答案

试试这个：

Try this:

Form2 currentActiveForm2 = null;
void yourButton_Click(object sender, EventArgs e)
{
    if (currentActiveForm2 != null)
    {
        currentActiveForm2.Close();
        // if currentActiveForm2 is null, your button has not been clicked yet, so the form doesn't exist yet and we cannot close it.
    }
    currentActiveForm2 = new Form2();
    currentActiveForm2.Show();
}

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