VB.Net/Database ADO.net/Data bind to ListBox — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 12:44, 26 мая 2010
Bind data to ListBox
Imports System
Imports System.Data
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.ruponentModel.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 ListBox1 As System.Windows.Forms.ListBox
Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
Friend WithEvents DataSet1 As System.Data.DataSet
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.ListBox1 = New System.Windows.Forms.ListBox
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.TextBox2 = New System.Windows.Forms.TextBox
Me.DataSet1 = New System.Data.DataSet
CType(Me.DataSet1, System.ruponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
"
"ListBox1
"
Me.ListBox1.Location = New System.Drawing.Point(8, 8)
Me.ListBox1.Name = "ListBox1"
Me.ListBox1.Size = New System.Drawing.Size(272, 95)
Me.ListBox1.TabIndex = 0
"
"TextBox1
"
Me.TextBox1.Location = New System.Drawing.Point(8, 112)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(128, 20)
Me.TextBox1.TabIndex = 1
Me.TextBox1.Text = "TextBox1"
"
"TextBox2
"
Me.TextBox2.Location = New System.Drawing.Point(152, 112)
Me.TextBox2.Name = "TextBox2"
Me.TextBox2.Size = New System.Drawing.Size(128, 20)
Me.TextBox2.TabIndex = 2
Me.TextBox2.Text = "TextBox2"
"
"DataSet1
"
Me.DataSet1.DataSetName = "NewDataSet"
Me.DataSet1.Locale = New System.Globalization.CultureInfo("en-GB")
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 149)
Me.Controls.Add(Me.TextBox2)
Me.Controls.Add(Me.TextBox1)
Me.Controls.Add(Me.ListBox1)
Me.Name = "Form1"
Me.Text = "Form1"
CType(Me.DataSet1, System.ruponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
"Create Connection object
Dim thisConnection As New SqlConnection _
("server=(local)\SQLEXPRESS;" & _
"integrated security=sspi;" & _
"database=MyDatabase")
" Sql Query
Dim sql As String = _
"SELECT FirstName, LastName FROM Employee"
" Create Data Adapter
Dim da As New SqlDataAdapter(sql, thisConnection)
" Fill Dataset and Create DataTable
da.Fill(DataSet1, "Employee")
Dim dt As DataTable = DataSet1.Tables("Employee")
ListBox1.DataSource = dt
ListBox1.DisplayMember = "FirstName"
" Bind to firstname column of the employees table
TextBox1.DataBindings.Add("text", dt, "FirstName")
" Bind to lastname column of the employees table
TextBox2.DataBindings.Add("text", dt, "LastName")
End Sub
End Class
Multi-Control Data Binding
Imports System.Data.SqlClient
Imports System.Windows.Forms
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class BoundForm
Inherits System.Windows.Forms.Form
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.gridDB = New System.Windows.Forms.DataGridView
Me.Label3 = New System.Windows.Forms.Label
Me.Label2 = New System.Windows.Forms.Label
Me.Label1 = New System.Windows.Forms.Label
Me.dtBirth = New System.Windows.Forms.DateTimePicker
Me.lstID = New System.Windows.Forms.ListBox
Me.txtLastName = New System.Windows.Forms.TextBox
Me.txtFirstName = New System.Windows.Forms.TextBox
CType(Me.gridDB, System.ruponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
"
Me.gridDB.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me.gridDB.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize
Me.gridDB.Location = New System.Drawing.Point(12, 126)
Me.gridDB.Name = "gridDB"
Me.gridDB.Size = New System.Drawing.Size(348, 132)
Me.gridDB.TabIndex = 17
"
"Label3
"
Me.Label3.Location = New System.Drawing.Point(116, 77)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(68, 16)
Me.Label3.TabIndex = 16
Me.Label3.Text = "Birth Date:"
"
"Label2
"
Me.Label2.Location = New System.Drawing.Point(116, 45)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(68, 16)
Me.Label2.TabIndex = 15
Me.Label2.Text = "Last Name:"
"
"Label1
"
Me.Label1.Location = New System.Drawing.Point(116, 17)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(68, 16)
Me.Label1.TabIndex = 14
Me.Label1.Text = "First Name:"
"
"dtBirth
"
Me.dtBirth.Format = System.Windows.Forms.DateTimePickerFormat.[Short]
Me.dtBirth.Location = New System.Drawing.Point(192, 73)
Me.dtBirth.Name = "dtBirth"
Me.dtBirth.Size = New System.Drawing.Size(132, 21)
Me.dtBirth.TabIndex = 13
"
"lstID
"
Me.lstID.Location = New System.Drawing.Point(12, 9)
Me.lstID.Name = "lstID"
Me.lstID.Size = New System.Drawing.Size(68, 108)
Me.lstID.TabIndex = 12
"
"txtLastName
"
Me.txtLastName.Location = New System.Drawing.Point(192, 41)
Me.txtLastName.Name = "txtLastName"
Me.txtLastName.Size = New System.Drawing.Size(132, 21)
Me.txtLastName.TabIndex = 11
"
"txtFirstName
"
Me.txtFirstName.Location = New System.Drawing.Point(192, 13)
Me.txtFirstName.Name = "txtFirstName"
Me.txtFirstName.Size = New System.Drawing.Size(132, 21)
Me.txtFirstName.TabIndex = 10
"
"BoundForm
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(372, 266)
Me.Controls.Add(Me.gridDB)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.dtBirth)
Me.Controls.Add(Me.lstID)
Me.Controls.Add(Me.txtLastName)
Me.Controls.Add(Me.txtFirstName)
Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Name = "BoundForm"
Me.Text = "BoundForm"
CType(Me.gridDB, System.ruponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents gridDB As System.Windows.Forms.DataGridView
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents dtBirth As System.Windows.Forms.DateTimePicker
Friend WithEvents lstID As System.Windows.Forms.ListBox
Friend WithEvents txtLastName As System.Windows.Forms.TextBox
Friend WithEvents txtFirstName As System.Windows.Forms.TextBox
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim Connect As String = "Data Source=localhost;Integrated Security=True;Initial Catalog=Northwind;"
Dim con As New SqlConnection(Connect)
Dim SQL As String = "SELECT * FROM Employees"
Dim cmd As New SqlCommand(SQL, con)
Dim adapter As New SqlDataAdapter(cmd)
Dim dsNorthwind As New DataSet()
con.Open()
adapter.Fill(dsNorthwind, "Employees")
con.Close()
gridDB.DataSource = dsNorthwind.Tables("Employees")
txtFirstName.DataBindings.Add("Text", dsNorthwind.Tables("Employees"), "FirstName")
txtLastName.DataBindings.Add("Text", dsNorthwind.Tables("Employees"), "LastName")
lstID.DataSource = dsNorthwind.Tables("Employees")
lstID.DisplayMember = "EmployeeID"
dtBirth.DataBindings.Add("Value", dsNorthwind.Tables("Employees"), "BirthDate")
End Sub
End Class