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寻找如何制作我自己的 MessageBox 示例代码

发布于 2024-10-17 16:49:45 字数 89 浏览 3 评论 0原文

寻找如何使我自己的 MessageBox 示例代码变得

简单，包含标题、正文和是/否按钮

以及如何使用它，

提前致谢

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差↓一点笑了 2024-10-24 16:49:45

有一个内置方法可以实现此目的。它将自动在屏幕上显示一个消息框，其中包含您指定的参数。例如，以下代码行：

MessageBox.Show("Your body text goes here.",
                "Message Title",
                MessageBoxButtons.YesNo);

将生成一个如下所示的消息框：

您还可以使用不同的重载为消息框指定图标MessageBox.Show函数。例如：

MessageBox.Show("Your body text goes here.",
                "Message Title",
                MessageBoxButtons.YesNo,
                MessageBoxIcon.Warning);

图标值的完整列表可在此处获取。

MessageBox.Show 函数的返回值是一个DialogResult 值对应于在消息框中单击的按钮。通过检查返回值，您可以确定用户选择了哪个操作过程。例如：

private void QueryExitApplication()
{
    // Show a message box, asking the user to confirm that they want to quit
    DialogResult result;
    result = MessageBox.Show("Do you really want to quit this application?",
                             "Quit Application?",
                             MessageBoxButtons.YesNo,
                             MessageBoxIcon.Warning);

    // Check the returned value of the MessageBox.Show function
    // (this corresponds to the button clicked by the user)
    if (result == DialogResult.Yes)
    {
        // Close the form
        this.Close();
    }

    // Otherwise, they selected No (so do nothing)
}

There is a built-in method for this. It will automatically display a message box on screen with your specified parameters. For example, the following line of code:

MessageBox.Show("Your body text goes here.",
                "Message Title",
                MessageBoxButtons.YesNo);

will produce a message box that looks like this:

sample message box

You can also specify an icon for your message box using a different overload of the MessageBox.Show function. For example:

MessageBox.Show("Your body text goes here.",
                "Message Title",
                MessageBoxButtons.YesNo,
                MessageBoxIcon.Warning);

The complete list of icon values is available here.

The return value of the MessageBox.Show function is a DialogResult value corresponding to the button that was clicked on the message box. By checking the return value, you can determine which course of action was chosen by the user. For example:

private void QueryExitApplication()
{
    // Show a message box, asking the user to confirm that they want to quit
    DialogResult result;
    result = MessageBox.Show("Do you really want to quit this application?",
                             "Quit Application?",
                             MessageBoxButtons.YesNo,
                             MessageBoxIcon.Warning);

    // Check the returned value of the MessageBox.Show function
    // (this corresponds to the button clicked by the user)
    if (result == DialogResult.Yes)
    {
        // Close the form
        this.Close();
    }

    // Otherwise, they selected No (so do nothing)
}

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