How Can I Efficiently Convert a DataTable to a Generic List in .NET?

Optimizing DataTable to Generic List Conversions in .NET

.NET developers frequently encounter the task of converting a DataTable into a generic list. Traditional methods often involve manual row-by-row iteration, a process that's both cumbersome and inefficient.

Streamlined Approach for .NET 3.5 and Above

For .NET 3.5 and later versions, a superior solution exists using DataTable extension methods. The DataTableExtensions.AsEnumerable method offers a highly efficient way to convert a DataTable into an IEnumerable<DataRow>.

<code class="language-csharp">IEnumerable<DataRow> dataRows = dt.AsEnumerable();</code>

This IEnumerable<DataRow> can then be further processed using LINQ for operations like filtering or grouping. Should you need a List<DataRow>, simply utilize Enumerable.ToList:

<code class="language-csharp">using System.Linq;
...
List<DataRow> dataList = dt.AsEnumerable().ToList();</code>

This approach minimizes code complexity while significantly enhancing conversion efficiency.

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