C# How do I convert a string into an entity object that might contain a collection type

Question

public class StringRangeAttribute : BaseAttribute
{
    public int Length { get; set; }        //property limitation of length 
    public int Index { get; set; }
    public int CurrentLegth { get; set; }
}

My Class：

public class ProcessInquiryReceive:BaseOut
{
    [StringRange(Length = 13, Index = 5)]
    public string procdata_id { get; set; }
    [StringRange(Length = 3, Index = 6)]
    public string arycnt1 { get; set; }
    [StringRange(Index = 7)]
    public List<ProcessInquiry> ary1 { get; set; }
}
public class ProcessInquiry
{
    [StringRange(Length = 10)]
    public string procdata { get; set; }
    [StringRange(Length = 4)]
    public string item_seq_no { get; set; }
}

String：【1 50 4 61 3 5 123 789 130651 11112222222222222233333333333333】

My string To EntityObj function:

        public static void StringToEntity<T>(this T t,string Str)
    {
        try
        {
            //获取类型
            Type type = t.GetType();
            //获取对象全部属性
            PropertyInfo[] properties = type.GetProperties();
            //进行属性排序
            var PropertyByIndex = properties.OrderBy(p => (p.GetCustomAttributes(typeof(StringRangeAttribute), false).FirstOrDefault() as StringRangeAttribute).Index).ToArray();
            foreach (var item in PropertyByIndex)
            {
                //获取该项 是否是泛型
                var IsGenericType = item.PropertyType.IsGenericType;
                //获取该项 实现或继承接口对象
                var Lis = item.PropertyType.GetInterface("IEnumerable", false);
                if (IsGenericType && Lis != null)
                {
                    //将泛型集合中全部属性，转换成单个object对象
                    var ListVal = item.GetValue(t, null) as IEnumerable<object>;
                    if (ListVal == null)
                        continue;
                    //循环
                    foreach (var prop in ListVal)
                    {
                        prop.GetStrToEntity(Str);
                    }
                }
                else
                {
                    //获取属性约束长度
                    int Len = (item.GetCustomAttributes(typeof(StringRangeAttribute), false).FirstOrDefault() as StringRangeAttribute).Length;
                        //GetCustomAttributes(typeof(StringRangeAttribute), false).FirstOrDefault() as StringRangeAttribute).Index
                    //设置长度
                    item.SetValue(t, Str.Substring(0,Len), null);
                    Str = Str.Substring(Len, Str.Length - Len);
                }
            }
        }
        catch (Exception ex)
        {
            Logger.IBMMQLogger.Error("GetStrToEntity  Error " + ex.Message);
        }
    }

//main

 ProcessInquiryReceive processInquiryReceive = new ProcessInquiryReceive()
        {
            ary1 = new List<ProcessInquiry>
            {
                new ProcessInquiry(){ },
                new ProcessInquiry(){ },
                new ProcessInquiry(){}
            }
        };
processInquiryReceive .StringToEntity(new list<string>());

For this method, however, the collection attributes must be created in advance to match the quantity. I don't know how many there are

ary1 = new List<ProcessInquiry>
            {
                new ProcessInquiry(){ procdata="",item_seq_no=""},
                new ProcessInquiry(){ procdata="",item_seq_no=""},
                new ProcessInquiry(){procdata="",item_seq_no=""}
            }

Maybe you have other ways to convert strings to entity objects
Please help me thank you.