C# 设置所有MessageBox弹窗置顶

你可以使用以下代码将所有的MessageBox弹窗置顶：

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetForegroundWindow(IntPtr hWnd);

public static DialogResult ShowTopMostMessageBox(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
{
    var topMostMessageBox = new Form
    {
        TopMost = true,
        MaximizeBox = false,
        MinimizeBox = false,
        ShowInTaskbar = false,
        FormBorderStyle = FormBorderStyle.FixedDialog,
        StartPosition = FormStartPosition.CenterScreen,
        AutoSize = true,
        AutoSizeMode = AutoSizeMode.GrowAndShrink
    };

    topMostMessageBox.Controls.Add(new Label { Text = text, Dock = DockStyle.Fill, Margin = new Padding(10) });

    var okButton = new Button
    {
        DialogResult = DialogResult.OK,
        Text = "OK",
        Dock = DockStyle.Bottom,
        Margin = new Padding(10)
    };

    topMostMessageBox.Controls.Add(okButton);

    topMostMessageBox.Text = caption;
    topMostMessageBox.ShowIcon = icon == MessageBoxIcon.None ? false : true;
    topMostMessageBox.Icon = SystemIcons.Question;

    SetForegroundWindow(topMostMessageBox.Handle);

    return topMostMessageBox.ShowDialog();
}

然后，你可以像这样调用它：

ShowTopMostMessageBox("This is a message", "Caption", MessageBoxButtons.OK, MessageBoxIcon.Information);