请查看LINQ的OrderBy扩展方法。
MyList.OrderBy (p => p.Category);
如果您需要一种更复杂的方式来对类别进行排序,您可以创建一个实现IComparer接口的类,并在其中实现您的排序逻辑。
public class SmartphonesFirst : IComparer<Product>
{
const string Smartphone = "Smartphone";
public int Compare( Product x, Product y )
{
if( x.Category == Smartphone && y.Category != Smartphone )
{
return -1;
}
if( y.Category == Smartphone && x.Category != Smartphone )
{
return 1;
}
else
{
return Comparer<String>.Default.Compare (x.Category, y.Category);
}
}
}
你可以不使用LINQ来完成它:
var l = new List<Product> ();
l.Add (new Product ()
{
Name = "Omnia 7",
Category = "Smartphone"
});
l.Add (new Product ()
{
Name = "Mercedes",
Category = "Car"
});
l.Add (new Product ()
{
Name = "HTC",
Category = "Smartphone"
});
l.Add (new Product ()
{
Name = "AMD",
Category = "CPU"
});
l.Sort (new SmartphonesFirst ());
foreach( var p in l )
{
Console.WriteLine (String.Format ("{0} : {1}", p.Category, p.Name));
}
或者使用LINQ:
var l = new List<Product> ();
l.Add (new Product ()
{
Name = "Omnia 7",
Category = "Smartphone"
});
l.Add (new Product ()
{
Name = "Mercedes",
Category = "Car"
});
l.Add (new Product ()
{
Name = "HTC",
Category = "Smartphone"
});
l.Add (new Product ()
{
Name = "AMD",
Category = "CPU"
});
var sorted = l.OrderBy (p => p, new SmartphonesFirst ());
foreach ( var p in sorted )
{
Console.WriteLine (String.Format ("{0} : {1}", p.Category, p.Name));
}