0
我读的DataTable是Reference
类型,那么使用ref
关键字有什么区别?在性能方面两种方法相同?Does Ref关键字对于DataTable有用
(1)
public int CalculateValues(DataTable dt)
{
int output = 0;
foreach(DataRow row in dt.Rows)
{
//CalculateValues
}
return output;
}
(2)
public int CalculateValues(ref DataTable dt)
{
int output = 0;
foreach(DataRow row in dt.Rows)
{
//CalculateValues
}
return output;
}
(1) VS (2)?