1

我想在某些条件下将数据从一个 DataTable 插入到另一个 DataTable 中。我发现这个链接很有用:http ://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/7a5d0f88-3e71-435a-ae3c-ff01d1ca22a2/但我无法提出.ToList()我的查询. 我收到以下错误:

'System.Data.EnumerableRowCollection<System.Data.DataRow>' does not contain a definition for 'ToList' and no extension method 'ToList' accepting a first argument of type 'System.Data.EnumerableRowCollection<System.Data.DataRow>' could be found (are you missing a using directive or an assembly reference?)

有人可以帮我解决这个问题吗?

PS:我的查询:

(from crow in dtConfiguration.AsEnumerable()
                         where crow.Field<string>("FieldType") == "FL"
                         & crow.Field<string>("FieldName") != "DATEADDED"
                         & crow.Field<string>("FieldName") != "DATEMODIFIED"
                         select crow).ToList()
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2 回答 2

8

将以下语句添加到您的代码中:

using System.Linq;
于 2011-04-22T10:29:50.813 回答
4

我认为您需要参考 C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Data.DataSetExtensions.dll 中常见的 System.Data.DataSetExtensions

于 2011-08-01T18:32:10.287 回答