C table data De duplication

ask ： Query data from database , But only one piece of the same data is needed ？
answer ：

table = table.AsEnumerable().GroupBy(0 => 0.id).Select(o => o.First()).ToList(),

• Among them id, It can be modified to the field you need to remove duplicates
• First(), Is to query the first piece of data , If you need the last piece of data , It can be changed to Last() that will do