IEnumerable<string> result = from myRow in dataTableResult.AsEnumerable()
                             select myRow["server"].ToString() ;

var results = from DataRow myRow in myDataTable.Rows
    where (int)myRow["RowNo"] == 1
    select myRow

使用LINQ操作数据集/数据表中的数据

var results = from myRow in tblCurrentStock.AsEnumerable()
              where myRow.Field<string>("item_name").ToUpper().StartsWith(tbSearchItem.Text.ToUpper())
              select myRow;
DataView view = results.AsDataView();

在我的应用程序中，我发现使用LINQ到数据集的AsEnumerable()扩展数据表，如答案中所建议的是非常慢的。如果你对优化速度感兴趣，可以使用James Newtonking的Json。网上图书馆(http://james.newtonking.com/json/help/index.html)

// Serialize the DataTable to a json string
string serializedTable = JsonConvert.SerializeObject(myDataTable);    
Jarray dataRows = Jarray.Parse(serializedTable);

// Run the LINQ query
List<JToken> results = (from row in dataRows
                    where (int) row["ans_key"] == 42
                    select row).ToList();

// If you need the results to be in a DataTable
string jsonResults = JsonConvert.SerializeObject(results);
DataTable resultsTable = JsonConvert.DeserializeObject<DataTable>(jsonResults);

试试这个简单的问题:

var result=myDataTable.AsEnumerable().Where(myRow => myRow.Field<int>("RowNo") == 1);

var results = from myRow in myDataTable
where results.Field<Int32>("RowNo") == 1
select results;