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Editorial Team
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Asked: 2026-05-14T02:55:00+00:00

im biulding a ASP.net application, which is connected to a database. the database design

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im biulding a ASP.net application, which is connected to a database. the database design is as follows

**Users Table**
UserID `(PK) autonumber`
Username

**Question Table**
QuestionID `(PK) autonumber`
QuestionNumber
QuestionText

**Questionnaire Table**
QuestionnaireID  `(PK) autonumber`
UserID `(FK) User Table`
Date

**Feedback Table**
FeedbackID `(PK) autonumber`
QuestionnaireID `(FK) Questionnaire Table`
QuestionID `(FK) Questions Table`
Answer
Comment

please can some one advise me on how I should go about inserting data into the questionnaire table and the feedback table. I know that the questionnaire table needs to be updated first. but the Questionnaire ID is linked to the feedback table, so how do I go about updating both tables ?

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1 Answer

  1. Editorial Team

    Look at using Linq2Sql (In your project add a new Linq to Sql Classes dbml file and drag your tables onto it from the server exploter), it will map your tables to classes and a datacontext, which you can use to create new data objects to update your tables. It will automatically track and insert the necessary rows and manage the relationships between them

    DataContext db = new DataContext();

Questionnaire q = new Questionnaire();

q.UserId = 1234;

Feedback f = new Feedback();

f.Questionnaire = q;

db.Feedbacks.InsertOnSubmit(f);

db.SubmitChanges();

    A great place to start is with Scott Gu’s introduction on his blog

    http://weblogs.asp.net/scottgu/archive/2007/05/19/using-linq-to-sql-part-1.aspx

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