Imports System.Data.SqlClient

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim connetionString As String

        Dim sqlCnn As SqlConnection

        Dim sqlCmd As SqlCommand

        Dim sql As String



        connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"

        sql = "Select  * from product"



        sqlCnn = New SqlConnection(connetionString)

        Try

            sqlCnn.Open()

            sqlCmd = New SqlCommand(sql, sqlCnn)

            Dim sqlReader As SqlDataReader = sqlCmd.ExecuteReader()

            Dim schemaTable As DataTable = sqlReader.GetSchemaTable()

            Dim row As DataRow

            Dim column As DataColumn



            For Each row In schemaTable.Rows

                For Each column In schemaTable.Columns

                    MsgBox(String.Format("{0} = {1}", column.ColumnName, row(column)))

                Next

            Next

            sqlReader.Close()

            sqlCmd.Dispose()

            sqlCnn.Close()

        Catch ex As Exception

            MsgBox("Can not open connection ! ")

        End Try

    End Sub

End Class