c# - 多个 linq 连接但不同的运算符

Question

我将如何在 LINQ 中表达以下内容？

select * from table_1 t1
join table_2 t2 on t1.col1 = t2.col1 and t1.col2 <= t2.col2

这是我尝试过的方法，但我没有得到想要的结果。我正在尝试加入2 个表，但由于 table_1 的数量不大于或等于 table_2 中 WidgetA 的数量我不希望结果中有任何记录(在 xList 中)。

    List<anObj> table_1 = new List<anObj>();
    table_1.Add(new anObj() { Product = "WidgetA", Quantity = 0 });
    table_1.Add(new anObj() { Product = "WidgetB", Quantity = 3 });

    List<anObj> table_2 = new List<anObj>();
    table_2.Add(new anObj() { Product = "WidgetA", Quantity = 1 });
    table_2.Add(new anObj() { Product = "WidgetB", Quantity = 1 });

    var xList =
    from t1 in table_1
    join t2 in table_2
        on t1.Product equals t2.Product
    where t1.Quantity >= t2.Quantity
    select new
    {
        t1,
        t2
    };

    if (xList.Any())
        Console.WriteLine("Found");
    else
        Console.WriteLine("None"); //I'm looking for this result.           

Answer 1

from t1 in t1datatable
join t2 in t2datatable
        on t1.col1 equals t2.col1
where t1.col2 <= t2.col2
select new
{
    t1,
    t2 
};