I’m completely new to both VB.NET and JSON, and I’m trying to figure out

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Asked: May 13, 20262026-05-13T18:04:00+00:00 2026-05-13T18:04:00+00:00

I’m completely new to both VB.NET and JSON, and I’m trying to figure out

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I’m completely new to both VB.NET and JSON, and I’m trying to figure out how to do SQL queries towards an SQL 2005 Express server and format the return value to JSON. I got the queries working using this (perhaps very newbie-like) code;

Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI
Imports System.Web.UI.WebControls

Partial Public Class SQLConnect
Inherits System.Web.UI.Page
'Defines SQL variables
Dim con As New SqlConnection
Dim cmd As New SqlCommand
Dim dr As SqlDataReader
Dim ReadData As String
Dim i As Integer


Sub Click(ByVal s As Object, ByVal e As EventArgs)

    'Define SQL address, database, username and password
    con.ConnectionString = "Data Source=localhost\SQLEXPRESS;Initial Catalog=tempdb;User ID=tesst;Password=test"
    Try
        'Initialize connection
        con.Open()
        'Specify SQL query
        cmd = New SqlCommand("SELECT * FROM Member", con)
        'Execute query, dump result array into variable
        dr = cmd.ExecuteReader()
        messageLabel.Text = "<br />Connection established<br />"

        While (dr.Read)
            i = 0
            For i = 0 To dr.FieldCount - 1
                'Dump query results into a variable
                ReadData += dr.Item(i).ToString
            Next
        End While

        'Print query results
        messageLabel2.Text = ReadData
        'Close connection
        con.Close()
    Catch ex As Exception
        messageLabel.Text = "<br />Connection failed<br />"
    End Try


    End Sub
End Class

I have been looking at this, and I would love to see some code examples using this class or any other good method.

Any help would be much appreciated, any points and tips you might have.