[DevExpress]为TextEdit设置水印文字

关键代码：

        public static void SetWatermark(this TextEdit textEdit, string watermark)

        {

            textEdit.Properties.NullValuePromptShowForEmptyValue = true;

            textEdit.Properties.NullValuePrompt = watermark;

        }

        public static void ClearWatermark(this TextEdit textEdit)

        {

            if (textEdit.Properties.NullValuePromptShowForEmptyValue)

                textEdit.Properties.NullValuePrompt = string.Empty;

        }

测试代码：

        private void Form1_Load(object sender, EventArgs e)

        {

            textEdit1.SetWatermark("请输入用户名称....");

            textEdit2.SetWatermark("请输入用户密码....");

        }



        private void simpleButton1_Click(object sender, EventArgs e)

        {

            textEdit1.ClearWatermark();

            textEdit2.ClearWatermark();

        }

代码效果：