VB。代码如下所示:

Dim results = From myRow In myDataTable  
Where myRow.Field(Of Int32)("RowNo") = 1 Select myRow

试试这个简单的问题:

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

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

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()

试试这个…

SqlCommand cmd = new SqlCommand( "Select * from Employee",con);
SqlDataReader dr = cmd.ExecuteReader( );
DataTable dt = new DataTable( "Employee" );
dt.Load( dr );
var Data = dt.AsEnumerable( );
var names = from emp in Data select emp.Field<String>( dt.Columns[1] );
foreach( var name in names )
{
    Console.WriteLine( name );
}

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