Read data table schema and output to a ListView
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 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 Button1 As System.Windows.Forms.Button Friend WithEvents SchemaTableList As System.Windows.Forms.ListView <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.SchemaTableList = New System.Windows.Forms.ListView() Me.Button1 = New System.Windows.Forms.Button() Me.SuspendLayout() ' 'SchemaTableList ' Me.SchemaTableList.Dock = System.Windows.Forms.DockStyle.Top Me.SchemaTableList.Name = "SchemaTableList" Me.SchemaTableList.Size = New System.Drawing.Size(880, 512) Me.SchemaTableList.TabIndex = 0 ' 'Button1 ' Me.Button1.Location = New System.Drawing.Point(736, 520) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(136, 23) Me.Button1.TabIndex = 1 Me.Button1.Text = "Read Schema" ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15) Me.ClientSize = New System.Drawing.Size(880, 552) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.SchemaTableList}) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False) End Sub #End Region Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Const SelectQuery As String = "SELECT * FROM Employee" Dim conn As SqlConnection = New SqlConnection _ ("Server=(local)\SQLEXPRESS;Initial Catalog=MyDatabase;Integrated Security=SSPI") ' Retrieving schema for columns from a single table Dim cmd As SqlCommand = New SqlCommand(SelectQuery, conn) ' Retrieve schema only conn.Open() Dim reader As SqlDataReader = cmd.ExecuteReader(CommandBehavior.SchemaOnly) ' Get references to schema information Dim SchemaTable As DataTable = reader.GetSchemaTable() ' Close and release the connection before processing results reader.Close() conn.Close() ' Display schema table column headers Dim col As DataColumn SchemaTableList.View = View.Details For Each col In SchemaTable.Columns SchemaTableList.Columns.Add(col.ColumnName, 100, HorizontalAlignment.Left) Next ' Display schema Dim row As DataRow Dim ColCount As Integer = SchemaTable.Columns.Count For Each row In SchemaTable.Rows Dim OrderDetails(ColCount) As String Dim ColIdx As Integer For ColIdx = 0 To ColCount - 1 OrderDetails(ColIdx) = Convert.ToString(row(ColIdx)) Next Dim NewItem As ListViewItem = New ListViewItem(OrderDetails) SchemaTableList.Items.Add(NewItem) Next End Sub End Class
1. | Feed data from database into ListView and ListBox | ||
2. | Read data and feed into ListBox and ListView using OleDb |