用一行过滤gridview数据

Question

I am getting records from three tables in grid-view.

Here two table data is always the same but one table data shows different records I want to show third table data in one row in grid-view, when third table data gets the record then it needs to be filtered with comma separated using c#.

Answer 1

您将必须根据需要创建自定义数据表，并将该数据表绑定到gridview。

Answer 2

您可以将返回结果存储在列表中，并在绑定到网格之前对其进行过滤。

Answer 3

you need to use the union in your query to avoid the duplicate records rather than doing after binding the records.

You may get 50 records from the database but after removing the duplicates you may have just 5 to 10 records so why you want to get the 50 records, why can't remove them at the time of querying them.

Use something like this:

select x, y, z from Table1
Union
select x, y, z from Table2    
Union
select x, y, z from Table3

It will always give you the ditinct records.