是否可以为非强类型数据表构建动态LINQ查询？(Is it possible to build dynamic LINQ queries to non

是否可以为非强类型数据表构建动态LINQ查询？(Is it possible to build dynamic LINQ queries to non-strongly type datatables?)

使用LINQ ，我一直在尝试使用System.Linq.Dynamic库来动态查询数据表。 问题是它不是强类型的，而select的扩展方法是期望IEnumerable作为源。

有办法解决这个问题吗？ 示例代码：

var query = dataSet.Tables[0].AsEnumerable().Select("new(Regional)");

Using LINQ, I've been trying to use the System.Linq.Dynamic library in order to query a datatable dynamically. The problem is that it's not strongly typed, and the extension method for select is expecting an IEnumerable as the source.

Is there a way to work around this? Example code:

var query = dataSet.Tables[0].AsEnumerable().Select("new(Regional)");

最满意答案

AsEnumerable返回一个EnumerableRowCollection<DataRow> ，因此Select扩展方法应该可以正常处理AsEnumerable的结果...

例如 ：

var query = dataSet.Tables[0].AsEnumerable().Select(row => row.Field<string>("Regional"));

I found a solution here. I know this approach is might not be good when talking about performance, but it works for what I want

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