Imports System
Imports System.Collections
Imports System.Data
Imports System.IO
Imports System.Xml.Serialization
Imports System.Xml
Imports System.Windows.Forms
Imports System.Data.SqlClient
Imports System.Data.OleDb
Public Class MainClass
Shared Sub Main()
Dim form1 As Form = New Form1
Application.Run(form1)
End Sub
End Class
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents OrderDetailsList As System.Windows.Forms.ListView
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents OrderIDsList As System.Windows.Forms.ListBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.Label2 = New System.Windows.Forms.Label()
Me.OrderDetailsList = New System.Windows.Forms.ListView()
Me.Label1 = New System.Windows.Forms.Label()
Me.Button1 = New System.Windows.Forms.Button()
Me.OrderIDsList = New System.Windows.Forms.ListBox()
Me.SuspendLayout()
'
'Label2
'
Me.Label2.Location = New System.Drawing.Point(232, 8)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(216, 23)
Me.Label2.TabIndex = 9
Me.Label2.Text = "Order Details"
'
'OrderDetailsList
'
Me.OrderDetailsList.Location = New System.Drawing.Point(232, 32)
Me.OrderDetailsList.Name = "OrderDetailsList"
Me.OrderDetailsList.Size = New System.Drawing.Size(352, 360)
Me.OrderDetailsList.TabIndex = 8
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(8, 8)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(216, 23)
Me.Label1.TabIndex = 7
Me.Label1.Text = "Order IDs"
'
'Button1
'
Me.Button1.Location = New System.Drawing.Point(504, 400)
Me.Button1.Name = "Button1"
Me.Button1.TabIndex = 6
Me.Button1.Text = "Start"
'
'OrderIDsList
'
Me.OrderIDsList.ItemHeight = 16
Me.OrderIDsList.Location = New System.Drawing.Point(8, 32)
Me.OrderIDsList.Name = "OrderIDsList"
Me.OrderIDsList.Size = New System.Drawing.Size(216, 356)
Me.OrderIDsList.TabIndex = 5
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15)
Me.ClientSize = New System.Drawing.Size(592, 432)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label2, Me.OrderDetailsList, Me.Label1, Me.Button1, Me.OrderIDsList})
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
#End Region
Private Const ConnString As String = _
"Provider=SQLOLEDB;Data Source=(local)\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI;"
Private Connection As OleDbConnection = New OleDbConnection(ConnString)
Private ColumnsSet As Boolean = False
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim command As OleDbCommand = _
New OleDbCommand("SELECT OrderID FROM Orders", Connection)
Connection.Open()
Dim reader As OleDbDataReader = command.ExecuteReader()
Do While (reader.Read())
OrderIDsList.Items.Add(reader.GetInt32(0))
Loop
reader.Close()
Connection.Close()
End Sub
Private Sub OrderIDsList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles OrderIDsList.SelectedIndexChanged
Dim OrderID As Integer = Convert.ToInt32(OrderIDsList.SelectedItem)
Dim StoredProcCommand As OleDbCommand = New OleDbCommand("CustOrdersDetail", Connection)
With StoredProcCommand
.CommandType = CommandType.StoredProcedure
.Parameters.Add("@OrderID", OrderID)
End With
Connection.Open()
Dim RowList As ArrayList = New ArrayList()
Dim reader As OleDbDataReader = StoredProcCommand.ExecuteReader()
Do While reader.Read()
Dim Values(reader.FieldCount) As Object
reader.GetValues(Values)
RowList.Add(Values)
Loop
If Not ColumnsSet Then
Dim schema As DataTable = reader.GetSchemaTable()
SetColumnHeaders(schema)
End If
reader.Close()
Connection.Close()
PopulateOrderDetails(RowList)
End Sub
Private Sub SetColumnHeaders(ByVal schema As DataTable)
Dim row As DataRow
OrderDetailsList.View = View.Details
For Each row In schema.Rows
OrderDetailsList.Columns.Add(row("ColumnName"), 100, HorizontalAlignment.Left)
Next
ColumnsSet = True
End Sub
Private Sub PopulateOrderDetails(ByVal RowList As ArrayList)
OrderDetailsList.Items.Clear()
Dim row As Object()
For Each row In RowList
Dim OrderDetails(row.Length) As String
Dim col As Object
Dim ColIdx As Integer
For ColIdx = 0 To row.Length - 1
OrderDetails(ColIdx) = Convert.ToString(row(ColIdx))
Next
Dim NewItem As ListViewItem = New ListViewItem(OrderDetails)
OrderDetailsList.Items.Add(NewItem)
Next
End Sub
End Class
|