/// <summary>
///创建简单的按钮
/// </summary>
/// <param name="poHelper"></param>
/// <param name="psValue"></param>
/// <returns></returns>
public static MvcHtmlString SubmitButton(this HtmlHelper poHelper, string psValue)
{
return new MvcHtmlString(string.Format("<input type=\"submit\" value=\"{0}\">", psValue));
}