VB.NET Sql Select Statement Source Code Example
VB.NET Sql Select Statement Source Code
Purpose: – Illustrates using Sql Select Statement and writing to an output table.
Prerequistes:
- Install Visual Basic (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind Database
- Attach Northwind Database to Databases in Sql Express
Notes:
- Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
- You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.vb
Instructions:
- Use VB 2008 (Express or Standard) Edition
- Create new project; select Console Application; name of Project could be VBNET_Syntax.
- Right-click project name in solution explorer; add new folder; name of folder could be DatabaseADONET
- Right-click folder; add class; class name could be clsSqlSelect.vb
- Copy code into clsSqlSelect.vb
- Copy code into Module1.vb
- Click green arrow to start with debugging
Step 1: Use View Plain to Cut-n-paste code into clsSqlSelect.vb
Imports System Imports System.Data Imports System.Data.SqlClient Public Class clsSQLSelect Shared WithEvents con As SqlConnection Sub Main() con = New SqlConnection("Server=(local)\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI") ' Create the command object Dim str As String = "SELECT EmployeeID, FirstName, LastName FROM Employees" Dim cmd As New SqlCommand(str, con) Dim da As New SqlDataAdapter(cmd) Dim ds As New DataSet() da.Fill(ds, "Employees") Dim dc As DataColumn For Each dc In ds.Tables(0).Columns Console.Write("{0,15}", dc.ColumnName) Next Console.Write(vbCrLf) Dim dr As DataRow For Each dr In ds.Tables(0).Rows Dim i As Integer For i = 1 To ds.Tables(0).Columns.Count Console.Write("{0,15}", dr(i - 1)) Next i Console.Write(vbCrLf) Next Console.ReadLine() End Sub End Class |
Step 2: Use View Plain to Cut-n-paste code into Module1.vb
Module Module1 Sub Main() '***** DataBaseADONET ************* Dim mySQLSelect As New clsSQLSelect mySQLSelect.Main() End Sub End Module |