Question

I am building a forum and I have two tables:

Threads
-------
ThreadID
UsersID
Date
ThreadTitle
ThreadParagraph
ThreadClosed


Topics
-----
TopicsID
Theme
Topics
Date

The ThreadID is connected to the users table with a primary key:
Topics.TopicsID(PK)==Threads.TopicID(FK)

First i insert into the Topics table and then to the Threads table. My goal is to obtain the ID of Topics.TopicID with Identity_Scope() and pass it to the second insert which is Threads.TopicID

Here is what i have done, but i am not sure if it is correct:

StringBuilder insertCommand = new StringBuilder();
    insertCommand.Append("DECLARE @TopicsID int");
    insertCommand.Append("INSERT INTO Topics(Theme,Topics,Date)");
    insertCommand.Append("VALUES('@topic,@subTopic,GETDATE()')");
    insertCommand.Append("SET @TopicsID = SCOPE_IDENTITY()");

    insertCommand.Append("INSERT INTO Threads(UsersID,TopicsID,Date,ThreadTitle,ThreadParagraph,ThreadClosed)");
    insertCommand.Append("VALUES('@uniqueIdentifier,@TopicsID,GETDATE(),@questionTitle,@questionParagraph,0')");

I have got all the otehr parameters obtained from the controls the users presses or feeds information into, so dont worry about them. All i am worried about is passing the same TopicID from the Topic table to Thread table (Column name: TopicID).

Answer 1

Both Magnus & Damien_The_Unbeliever are right – you have few syntax errors (or typos). Correct insert command should be something like

    insertCommand.Append(@"
          DECLARE @TopicSID int

          INSERT INTO Topics(Theme,Topics,Date)
          VALUES(@topic,@subTopic,GETDATE())

          SET @TopicSID = SCOPE_IDENTITY()

          INSERT INTO Threads(UsersID,TopicsID,Date,ThreadTitle,ThreadParagraph,ThreadClosed)
          VALUES(@uniqueIdentifier,@TopicSID ,GETDATE(),@questionTitle,@questionParagraph,0)
    ");