泛型方法中实例化一个有参数的泛型实例

public static T GetInstance(DataRow dr)
{
var ctors = typeof(T).GetConstructors(
BindingFlags.Instance
| BindingFlags.NonPublic
| BindingFlags.Public);
if (ctors.Count() != 1)
throw new InvalidOperationException(String.Format("Type {0} must have exactly one constructor.", typeof(T)));
var ctor = ctors.SingleOrDefault(c => c.IsPrivate);
if (ctor == null)
throw new InvalidOperationException(String.Format("The constructor for {0} must be private.", typeof(T)));
return (T)ctor.Invoke(new object[] { dr });
} public static T GetInstance(DataRow dr)
{
var ctors = typeof(T).GetConstructors(
BindingFlags.Instance
| BindingFlags.NonPublic
| BindingFlags.Public);
if (ctors.Count() != 1)
throw new InvalidOperationException(String.Format("Type {0} must have exactly one constructor.", typeof(T)));
var ctor = ctors.SingleOrDefault(c => c.IsPrivate);
if (ctor == null)
throw new InvalidOperationException(String.Format("The constructor for {0} must be private.", typeof(T)));
return (T)ctor.Invoke(new object[] { dr });
}