/// <summary>
/// 获取string参数，如果没有此参数，则返回defaultValue(默认为null)
/// </summary>
/// <param name="name">参数名</param>
/// <param name="defaultValue">默认值</param>
/// <returns>参数值</returns>
public static string GetStringNull(string name, string defaultValue = null)
{
return(FormHelper.GetQueryOrFormString(name, null) ?? defaultValue);
}
/// <summary>
/// 获取string参数，如果没有此参数，则返回""
/// </summary>
/// <param name="name">参数名</param>
/// <returns>参数值</returns>
public static string GetString(string name)
{
return(FormHelper.GetQueryOrFormString(name));
}
