Method to get Sharepoint Column Internal Names

#region Method to get the Internal Name for the Column in the List
public static string GetColumnInternalName(SPList List, string ActualColumnName)
{
string ColumnInternalName = string.Empty;
for (int fc = 0; fc < List.Fields.Count; fc++)
{
if (List.Fields[fc].Title == ActualColumnName)
{
//Get Internal Name for the displayed column name
ColumnInternalName = List.Fields[fc].InternalName;
return ColumnInternalName;
}
}
return ColumnInternalName;

}
#endregion