如何从C＃代码更改表

Question

I want to add one column to an existing table in C#, if it doesn't already exist. I know I have to use an 'alter table' command.

But I am not able to fire that command in my C# code.
How can I do?

I'm using Visual Studio 2010 and Sql Server 2008.

Answer 1

this :

Use [DatabaseName]
Go
if Not exists( Select * from sys.columns As clm
                where clm.object_id = OBJECT_ID(N'[TableName]')
                And clm.name = N'[ColumnName]'
              )
Begin

    Alter Table TableName
    Add ColumnName DataTypeName

End