如何启动一个将使用不同数据类型存储值数组的VAR？

Question

我在.NET中构建了一个动态表达式，如果列类型为字符串，则可以工作，但是，如果列是日期或int，则在传递到表达式之前，我必须将输入转换为相应的数据类型。我该如何使其动态？

    MemberExpression member = Expression.Property(param, filter.Name);
    var propertyType = ((PropertyInfo)member.Member).PropertyType;
    
    if (propertyType.GetType() == typeof(Int32))
    {
      var criteria = Array.ConvertAll(filter.Value, Int32.Parse);
    }
    else if (propertyType.GetType() == typeof(DateTime))
    {
      var criteria = Array.ConvertAll(filter.Value, DateTime.Parse);
    }
    else
    {
    var criteria = filter.Value;
    }

criteria.Aggregate( // -- gives error here since criteria does not exist in current context
    (Expression)Expression.Constant(false),
        (acc, next) =>
        Expression.MakeBinary(
        ExpressionType.Or,
        acc, Expression.Equal(member, Expression.Constant(next))));

我已经尝试定义

var criteria = null;
var criteria = object[];
dynamic criteria;
var criteria = new {};

有效载荷

{
  "pageFilters": [
    {
      "name": "string",
      "condition": "Equals",
      "value": [
        "string"
      ]
    }
  ]
}