这是一个简单的方法，适用于我和使用lambda表达式:

var results = myDataTable.Select("").FirstOrDefault(x => (int)x["RowNo"] == 1)

然后如果你想要一个特定的值:

if(results != null) 
    var foo = results["ColName"].ToString()

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

var query = from p in dt.AsEnumerable()
                    where p.Field<string>("code") == this.txtCat.Text
                    select new
                    {
                        name = p.Field<string>("name"),
                        age= p.Field<int>("age")                         
                    };

name和age字段现在是查询对象的一部分，可以像这样访问:

您可以尝试这样做，但必须确定每个Column的值类型

List<MyClass> result = myDataTable.AsEnumerable().Select(x=> new MyClass(){
     Property1 = (string)x.Field<string>("ColumnName1"),
     Property2 = (int)x.Field<int>("ColumnName2"),
     Property3 = (bool)x.Field<bool>("ColumnName3"),    
});

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

下面提供了如何实现这一目标的示例:

DataSet dataSet = new DataSet(); //Create a dataset
dataSet = _DataEntryDataLayer.ReadResults(); //Call to the dataLayer to return the data

//LINQ query on a DataTable
var dataList = dataSet.Tables["DataTable"]
              .AsEnumerable()
              .Select(i => new
              {
                 ID = i["ID"],
                 Name = i["Name"]
               }).ToList();