如何使用 c# 更新 sql 中的一个特定单元格

Question

In the table there is no primary key, So I have contact list for as follows

id	Contact
10302	*******08
10302	*******69
10302	*******52

I want to update one specific contact with using where clause and did that it is updating all number I have no idea how to do it.

can any one help?

Answer 1

You'll need two filters in your WHERE clause for the update, apart from the ID, the old Contact value so you only update that row in the table (provided that the table doesn't have two rows with the same ID and Contact)