/// <summary>
/// 获取变量
/// </summary>
/// <param name="name">变量名</param>
/// <param name="val">变量值</param>
/// <returns>返回变量值</returns>
public object GetVal(string name, object val = null)
{
if (ValDt.TryGetValue(name, out object value))
{
if (value == null)
{
value = val;
}
}
else
{
value = val;
}
return(value);
}
