将 DataRowCollection 转换为 IEnumerable<T>; [英] Convert DataRowCollection to IEnumerable&lt;T&gt;

问题描述

我想在 .NET 3.5 中做这样的事情.最快的方法是什么?

I would like to do something like this in .NET 3.5. What's the quickest way?

IEnumerable<DataRow> collection = 
    TypedDataSet.TypedTableBase<DataRow>.Rows as IEnumerable<DataRow>;

推荐答案

假设您使用的是 .NET 4.0，它引入了协方差:

Assuming you're using .NET 4.0, which introduces covariance:

// Presumably your table is of some type deriving from TypedTableBase<T>,
// where T is an auto-generated type deriving from DataRow.
IEnumerable<DataRow> collection = myTypedTable;

表类型本身实现了IEnumerable其中 T : DataRow.

否则:

IEnumerable<DataRow> collection = myTypedTable.Cast<DataRow>();

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