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POSQLCe Database in VB.NET Throws Exception while inserting data in table
 

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  1. POSQLCe Database in VB.NET Throws Exception while inserting data in table
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    <p>I am playing with databases and today in my attempt to work with SQLCompactEdition database, I've created a local database named UserDB and have a table in it named, User.</p> <p>I've logged in into admin using my app(which is another database) and through admin, I am creating a user.</p> <p>Code I used for the purpose is : </p> <pre><code>Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim connStr As New SqlCeConnection("Data Source=c:\users\babi\documents\visual studio 2012\Projects\ShopManagement\ShopManagement\" &amp; "User\UserDB.sdf; Password =") Dim name, pass, repass As String name = TextBox1.Text If (name.Length = 0) Then MessageBox.Show("Enter user-name!!") Exit Sub End If pass = TextBox2.Text If (pass.Length = 0) Then MessageBox.Show("Enter password!!") Exit Sub End If repass = TextBox3.Text If (repass.Length = 0) Then MessageBox.Show("Re-enter password!!") Exit Sub End If If (getMD5Hash(pass) = getMD5Hash(repass)) Then Dim cmd As New SqlCeCommand("INSERT INTO User(uname, upass)VALUES(" &amp; name &amp; "," &amp; getMD5Hash(pass) &amp; ");", connStr) connStr.Open() cmd.ExecuteNonQuery() connStr.Close() MessageBox.Show("User Created!") Exit Sub Else MessageBox.Show("Passwords donot match!!") Exit Sub End If End Sub </code></pre> <p>When I debug, I find the querystring to be :</p> <pre><code>"INSERT INTO User(uname, upass)VALUES(abcd,827ccb0eea8a706c4c34a16891f84e7b);" </code></pre> <p>The Exception that occurs is :</p> <pre><code>An unhandled exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in System.Data.SqlServerCe.dll </code></pre> <p>I cannot understand what is causing this error. If any more information is required, please ask.</p> <p><em>EDIT</em></p> <p>Fixed Code :</p> <pre><code>Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim connStr As New SqlCeConnection("Data Source=c:\users\babi\documents\visual studio 2012\Projects\ShopManager\ShopManager\" &amp; "ManagementDB.sdf; Password =") Dim name, pass, repass As String name = TextBox1.Text If (name.Length = 0) Then MessageBox.Show("Enter user-name!!") Exit Sub End If pass = TextBox2.Text If (pass.Length = 0) Then MessageBox.Show("Enter password!!") Exit Sub End If repass = TextBox3.Text If (repass.Length = 0) Then MessageBox.Show("Re-enter password!!") Exit Sub End If If (getMD5Hash(pass) = getMD5Hash(repass)) Then Dim cmd As New SqlCeCommand("INSERT INTO [User](uname, upass) VALUES('" &amp; name &amp; "','" &amp; getMD5Hash(pass) &amp; "');", connStr) connStr.Open() cmd.ExecuteNonQuery() connStr.Close() MessageBox.Show("User Created!") Exit Sub Else MessageBox.Show("Passwords donot match!!") Exit Sub End If End Sub </code></pre> <p>The solution to the problem is given by the combination of the two solutions! So thank you to both of you :)</p> <p>Regards Priyabrata</p>
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