c# winfom从0学习开发开发OA、BPM工作流程与自定义表单系统（一）设计前准备

 public partial class FormMessageBox : Office2007Form
    {
        public DialogResult UserChoice { get; private set; }
        public FormMessageBox()
        {
            this.EnableGlass = false;//关键
            InitializeComponent();
        }
        public static DialogResult Show(string message, string title = "", MessageBoxButtons buttons = MessageBoxButtons.OK)
        {
            FormMessageBox messageBox = new FormMessageBox();
            messageBox.lblMessage.Text = message;
            messageBox.Text = title;

            // 设置按钮
            DialogResult result = DialogResult.None;
            switch (buttons)
            {
                case MessageBoxButtons.OK:
                    messageBox.btnCancel.Visible = false;
                    messageBox.btnOK.Text = "确定";
                    break;
                case MessageBoxButtons.OKCancel:
                    messageBox.btnCancel.Text = "取消";
                    messageBox.btnOK.Text = "确定";
                    break;
                case MessageBoxButtons.YesNo:
                    messageBox.btnCancel.Text = "取消";
                    messageBox.btnOK.Text = "确定";
                    break;
                case MessageBoxButtons.YesNoCancel:
                    messageBox.btnCancel.Text = "取消";
                    messageBox.btnOK.Text = "确定";
                    break;
            }

            // 居中显示消息框
            messageBox.StartPosition = FormStartPosition.CenterScreen;

            result = messageBox.ShowDialog();

            return result;
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            UserChoice = DialogResult.OK;
            this.DialogResult = DialogResult.OK;
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            UserChoice = DialogResult.Cancel;
            this.DialogResult = DialogResult.Cancel;
        }
    }

 FormMessageBox.Show("消息框的内容", "信息框", MessageBoxButtons.OK);

        DialogResult result = FormMessageBox.Show("This is a custom message.", "Custom Box", MessageBoxButtons.YesNo);
            if (result == DialogResult.Yes)
            {
                // 用户点击了“是”按钮，执行相应的操作
                // ...
            }
            else if (result == DialogResult.No)
            {
                // 用户点击了“否”按钮，执行相应的操作
                // ...
            }
            else if (result == DialogResult.Cancel)
            {
                // 用户点击了“取消”按钮，执行相应的操作
                // ...
            }