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POWhen I start the application, the database drops
 

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  1. POWhen I start the application, the database drops
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    <p>I'm working on a small Information System Application. I'm making it with windows forms and Service-based Database. It's almost done but when I execute the application a very odd problem appears. I make a stored procedure for inserting data in db tables and when i execute it manually it all works fine, but when I start the program and execute the procedure through button click something wrong is happened. At first sight the program is working fine and the procedure is executing well, but the data is not stored in the db. Here is my code:</p> <p>UserData.cs</p> <pre><code> public static bool AddStudent(Student std) { UserDataClassesDataContext dc = new UserDataClassesDataContext(); try { dc.AddNewStudent(std.FirstName, std.SecondName, std.LastName, std.Faculty, std.Specialty, std.OKS, std.StudentStatus, std.FacNumber, std.Course, std.Potok, std.Group); dc.SubmitChanges(); } catch (Exception) { return false; } return true; } </code></pre> <p>StudentValidation.cs</p> <pre><code>public bool InsertStudent(Student std) { return UserData.AddStudent(std); } </code></pre> <p>MainForm.cs buttonClick event</p> <pre><code>private void insertStudentButton_Click(object sender, EventArgs e) { Student student = new Student(); student.FirstName = tbFirstName.Text; student.SecondName = tbSecondName.Text; student.LastName = tbLastName.Text; student.Faculty = tbFacultyName.Text; student.Specialty = tbSpecialty.Text; student.FacNumber = tbFacNumber.Text; student.OKS = (short)cbOKS.SelectedIndex; student.StudentStatus = (short)cbStudentStatus.SelectedIndex; student.Course = (short)numCourse.Value; student.Potok = tbFlow.Text; student.Group = tbGroup.Text; if (sv.InsertStudent(student) &amp;&amp; sv.InsertUser(student)) MessageBox.Show("The student is added successfully!"); else MessageBox.Show("A problem occurs while trying to add the student!"); } </code></pre> <p>I think that the db is somehow disconnected when I start my application, but I don't know why. </p>
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    1. PTQuestion
    1. USHristo Angelov
    1. USHristo Angelov
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    1. VO
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      1. POWhen I start the application, the database drops
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POWhen I start the application, the database drops
      1. This table or related slice is empty.
      1. VTClose
    1. COWhat is `UserData`?
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      1. POWhen I start the application, the database drops
      1. USHamlet Hakobyan
    2. COSounds like your database is recreated at start-time. How is your database deployed? And is it deployed at start-time?
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      1. POWhen I start the application, the database drops
      1. USMaarten
    3. COwhat you have wrote in the function 'SubmitChanges()'
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      1. USPandian
 

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