C# 如何将formclosing事件放入按钮中

我有一个名为

btnChallenge

的按钮。所需的操作是当单击时，无法关闭表单

以下是我到目前为止的情况：

public void btnChallenge_Click(object sender, EventArgs e) { }

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    // not sure on this if statement
    if (btnChallenge.Click)
    {
        e.Cancel = true;
    }
}

---

您可以这样尝试：

在窗体内声明私有变量：

private bool _closedFromMyButton;

然后在

FormClosing

事件上检查该属性：

private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
    if (_closedFromMyButton) // If closed from MyButton, don't do anything. let the form close.
        return;
    Hide(); // Hide the form (or not, it's up to you; this is useful if application has an icon in the tray)
    e.Cancel = true; // Cancel form closing
}

然后在某个按钮上单击（如果需要），输入此代码以仅从该按钮（或菜单项或工具栏按钮等）关闭表单：

---

您可以这样尝试：

在窗体内声明私有变量：

private bool _closedFromMyButton;

然后在

FormClosing

事件上检查该属性：

private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
    if (_closedFromMyButton) // If closed from MyButton, don't do anything. let the form close.
        return;
    Hide(); // Hide the form (or not, it's up to you; this is useful if application has an icon in the tray)
    e.Cancel = true; // Cancel form closing
}

然后在某个按钮上单击（如果需要），输入此代码以仅从该按钮（或菜单项或工具栏按钮等）关闭表单：

---

您可以定义一个变量，该变量在按下按钮时变为true，并在关闭时检查该变量是否为true

e、 g

---

您可以定义一个变量，该变量在按下按钮时变为true，并在关闭时检查该变量是否为true

e、 g

---

如果您想通过在用户按下其他按钮后关闭表单来阻止他们，那么此代码将帮助您

private bool close_state=false;    // hold the button state

// method to change the close_state by button click
private void Button1(object sender, EventArgs e)
{
    close_state = true;
    // if required you can toggle the close_state using an if statement
}

// Then on FormClosing event check that property:

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (close_state) {// If the button is pressed
        e.Cancel = true; // Cancel form closing
    }
}

---

您可以实现其他方法来关闭表单……

如果您想通过在用户按下其他按钮后关闭表单来阻止用户，则此代码将帮助您

private bool close_state=false;    // hold the button state

// method to change the close_state by button click
private void Button1(object sender, EventArgs e)
{
    close_state = true;
    // if required you can toggle the close_state using an if statement
}

// Then on FormClosing event check that property:

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (close_state) {// If the button is pressed
        e.Cancel = true; // Cancel form closing
    }
}

---

您可以实现其他方法来关闭表单……

您可以调用

this.close（）

方法，这将调用

Form1\u FormClosing

事件：

public void btnChallenge_Click(object sender, EventArgs e)
{
    this.Close();
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    //code here...
}

---

您只需调用

this.Close（）

方法，这将调用

Form1\u FormClosing

事件：

public void btnChallenge_Click(object sender, EventArgs e)
{
    this.Close();
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    //code here...
}

---

我不知道你在问这个问题。你想要一个按钮，当你点击它时，它会阻止表单关闭？我想要一个按钮（btnChallenge）使表单关闭事件e.cancel=true那么表单1不能关闭我想要如果用户点击chellange按钮，表单就不能关闭你在问这个问题。你想要一个按钮，当你点击它时，阻止表单关闭？我希望按钮（btnChallenge）使表单关闭事件e.cancel=true，则表单1无法关闭我希望如果用户单击chellange按钮，表单无法关闭