VB.Net by API/System.Windows.Forms/ComboBox
Содержание
ComboBox.DataSource
<source lang="vbnet"> Imports System Imports System.Data Imports System.Data.OleDb Imports System.Data.SqlClient Imports System.Collections Imports System.Windows.Forms Imports System.Resources Public Class MainClass
Shared Sub Main()
Dim form1 As Form = New Form1()
Application.Run(form1)
End Sub
End Class
Public Class Form1
"Form level variables
Private strConnectionString As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=Employee.mdb;"
Private objConnection As OleDbConnection
Private objCommand As OleDbCommand
Private objDataAdapter As OleDbDataAdapter
Private objDataTable As DataTable
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Me.Load
"Initialize the Connection object
objConnection = New OleDbConnection(strConnectionString)
"Initialize the Command object
objCommand = New OleDbCommand("SELECT ID, FirstName " & _
"FROM Employee", objConnection)
"Initialize the DataAdapter object and set the SelectCommand property
objDataAdapter = New OleDbDataAdapter
objDataAdapter.SelectCommand = objCommand
"Initialize the DataTable object
objDataTable = New DataTable
"Populate the DataTable
objDataAdapter.Fill(objDataTable)
"Bind the DataTable to the ComboBox
ComboBox1.DataSource = objDataTable
ComboBox1.DisplayMember = "FirstName"
ComboBox1.ValueMember = "ID"
"Clean up
objDataAdapter.Dispose()
objDataAdapter = Nothing
objCommand.Dispose()
objCommand = Nothing
objConnection.Dispose()
objConnection = Nothing
End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1
Inherits System.Windows.Forms.Form
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.Label1 = New System.Windows.Forms.Label
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.DropDownStyle = System.Windows.Forms.ruboBoxStyle.DropDownList
Me.ruboBox1.FormattingEnabled = True
Me.ruboBox1.Location = New System.Drawing.Point(76, 13)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(205, 21)
Me.ruboBox1.TabIndex = 3
"
"Label1
"
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(13, 16)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(41, 13)
Me.Label1.TabIndex = 2
Me.Label1.Text = "Name"
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 76)
Me.Controls.Add(Me.ruboBox1)
Me.Controls.Add(Me.Label1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents Label1 As System.Windows.Forms.Label
End Class
</source>
ComboBox.DisplayMember
<source lang="vbnet"> Imports System Imports System.Data Imports System.Data.OleDb Imports System.Data.SqlClient Imports System.Collections Imports System.Windows.Forms Imports System.Resources Public Class MainClass
Shared Sub Main()
Dim form1 As Form = New Form1()
Application.Run(form1)
End Sub
End Class
Public Class Form1
"Form level variables
Private strConnectionString As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=Employee.mdb;"
Private objConnection As OleDbConnection
Private objCommand As OleDbCommand
Private objDataAdapter As OleDbDataAdapter
Private objDataTable As DataTable
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Me.Load
"Initialize the Connection object
objConnection = New OleDbConnection(strConnectionString)
"Initialize the Command object
objCommand = New OleDbCommand("SELECT ID, FirstName " & _
"FROM Employee", objConnection)
"Initialize the DataAdapter object and set the SelectCommand property
objDataAdapter = New OleDbDataAdapter
objDataAdapter.SelectCommand = objCommand
"Initialize the DataTable object
objDataTable = New DataTable
"Populate the DataTable
objDataAdapter.Fill(objDataTable)
"Bind the DataTable to the ComboBox
ComboBox1.DataSource = objDataTable
ComboBox1.DisplayMember = "FirstName"
ComboBox1.ValueMember = "ID"
"Clean up
objDataAdapter.Dispose()
objDataAdapter = Nothing
objCommand.Dispose()
objCommand = Nothing
objConnection.Dispose()
objConnection = Nothing
End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1
Inherits System.Windows.Forms.Form
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.Label1 = New System.Windows.Forms.Label
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.DropDownStyle = System.Windows.Forms.ruboBoxStyle.DropDownList
Me.ruboBox1.FormattingEnabled = True
Me.ruboBox1.Location = New System.Drawing.Point(76, 13)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(205, 21)
Me.ruboBox1.TabIndex = 3
"
"Label1
"
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(13, 16)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(41, 13)
Me.Label1.TabIndex = 2
Me.Label1.Text = "Name"
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 76)
Me.Controls.Add(Me.ruboBox1)
Me.Controls.Add(Me.Label1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents Label1 As System.Windows.Forms.Label
End Class
</source>
ComboBox.DrawItem
<source lang="vbnet">
Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D <Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Class Form1
Inherits System.Windows.Forms.Form
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.XButton = New System.Windows.Forms.Button
Me.ColorList = New System.Windows.Forms.ruboBox
Me.SuspendLayout()
"
"XButton
"
Me.XButton.Location = New System.Drawing.Point(112, 24)
Me.XButton.Name = "XButton"
Me.XButton.Size = New System.Drawing.Size(75, 23)
Me.XButton.TabIndex = 0
Me.XButton.Text = "Button1"
Me.XButton.UseVisualStyleBackColor = True
"
"ColorList
"
Me.ColorList.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawFixed
Me.ColorList.DropDownStyle = System.Windows.Forms.ruboBoxStyle.DropDownList
Me.ColorList.FormattingEnabled = True
Me.ColorList.Location = New System.Drawing.Point(88, 64)
Me.ColorList.Name = "ColorList"
Me.ColorList.Size = New System.Drawing.Size(121, 21)
Me.ColorList.TabIndex = 1
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 221)
Me.Controls.Add(Me.ColorList)
Me.Controls.Add(Me.XButton)
Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
Me.MaximizeBox = False
Me.Name = "Form1"
Me.Text = "Control Drawing"
Me.ResumeLayout(False)
End Sub
Friend WithEvents XButton As System.Windows.Forms.Button
Friend WithEvents ColorList As System.Windows.Forms.ruboBox
End Class Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ColorList.Items.Add("Red")
ColorList.Items.Add("Orange")
ColorList.Items.Add("Yellow")
ColorList.Items.Add("Green")
ColorList.Items.Add("Blue")
ColorList.Items.Add("Indigo")
ColorList.Items.Add("Violet")
End Sub
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
e.Graphics.DrawEllipse(Pens.Black, 10, 10, Me.ClientRectangle.Width - 20, _
Me.ClientRectangle.Height - 20)
End Sub
Private Sub XButton_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles XButton.Paint
Dim usePen As Pen
e.Graphics.Clear(SystemColors.Control)
usePen = New Pen(SystemColors.ControlText, 3)
e.Graphics.DrawRectangle(usePen, XButton.ClientRectangle)
usePen.Dispose()
End Sub
Private Sub ColorList_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles ColorList.DrawItem
Dim useBrush As Brush
If (e.Index = -1) Then Return
e.DrawBackground()
useBrush = New SolidBrush(Color.FromName(CStr(ColorList.Items(e.Index))))
e.Graphics.FillRectangle(useBrush, _
e.Bounds.Left + 2, e.Bounds.Top + 2, _
e.Bounds.Width - 4, e.Bounds.Height - 4)
useBrush.Dispose()
e.Graphics.DrawRectangle(Pens.Black, _
e.Bounds.Left + 2, e.Bounds.Top + 2, _
e.Bounds.Width - 4, e.Bounds.Height - 4)
e.DrawFocusRectangle()
End Sub
Private Sub XButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles XButton.Click
MsgBox("Button clicked.")
End Sub
End Class public class ComboBoxCellRenderer
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
</source>
ComboBox.Items.Add
<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ComboBoxSelectionEventAddValue
public Shared Sub Main
Application.Run(New 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 ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.Location = New System.Drawing.Point(72, 72)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(121, 21)
Me.ruboBox1.TabIndex = 0
Me.ruboBox1.Text = "ComboBox1"
"
"TextBox1
"
Me.TextBox1.Location = New System.Drawing.Point(16, 168)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(256, 20)
Me.TextBox1.TabIndex = 2
Me.TextBox1.Text = ""
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.TextBox1)
Me.Controls.Add(Me.ruboBox1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
- End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For i As Integer = 0 To 10
ComboBox1.Items.Add("Item " + i.ToString())
Next
ComboBox1.Text = "Choose one..."
End Sub
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim intSelectedIndex As Integer
intSelectedIndex = ComboBox1.SelectedIndex
Dim objSelectedItem As Object
objSelectedItem = ComboBox1.SelectedItem
TextBox1.Text = "Item"s index: " & intSelectedIndex & _
". Item"s text: " & objSelectedItem.ToString()
End Sub
End Class
</source>
ComboBox.SelectedIndexChanged
<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ComboBoxSelectionEventAddValue
public Shared Sub Main
Application.Run(New 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 ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.Location = New System.Drawing.Point(72, 72)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(121, 21)
Me.ruboBox1.TabIndex = 0
Me.ruboBox1.Text = "ComboBox1"
"
"TextBox1
"
Me.TextBox1.Location = New System.Drawing.Point(16, 168)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(256, 20)
Me.TextBox1.TabIndex = 2
Me.TextBox1.Text = ""
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.TextBox1)
Me.Controls.Add(Me.ruboBox1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
- End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For i As Integer = 0 To 10
ComboBox1.Items.Add("Item " + i.ToString())
Next
ComboBox1.Text = "Choose one..."
End Sub
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim intSelectedIndex As Integer
intSelectedIndex = ComboBox1.SelectedIndex
Dim objSelectedItem As Object
objSelectedItem = ComboBox1.SelectedItem
TextBox1.Text = "Item"s index: " & intSelectedIndex & _
". Item"s text: " & objSelectedItem.ToString()
End Sub
End Class
</source>
ComboBox.SelectedItem
<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ComboBoxSelectionEventAddValue
public Shared Sub Main
Application.Run(New 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 ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.Location = New System.Drawing.Point(72, 72)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(121, 21)
Me.ruboBox1.TabIndex = 0
Me.ruboBox1.Text = "ComboBox1"
"
"TextBox1
"
Me.TextBox1.Location = New System.Drawing.Point(16, 168)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(256, 20)
Me.TextBox1.TabIndex = 2
Me.TextBox1.Text = ""
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.TextBox1)
Me.Controls.Add(Me.ruboBox1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
- End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For i As Integer = 0 To 10
ComboBox1.Items.Add("Item " + i.ToString())
Next
ComboBox1.Text = "Choose one..."
End Sub
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim intSelectedIndex As Integer
intSelectedIndex = ComboBox1.SelectedIndex
Dim objSelectedItem As Object
objSelectedItem = ComboBox1.SelectedItem
TextBox1.Text = "Item"s index: " & intSelectedIndex & _
". Item"s text: " & objSelectedItem.ToString()
End Sub
End Class
</source>
ComboBox.Text
<source lang="vbnet"> Imports System.Windows.Forms public class GetComboBoxText
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) _
Handles Button1.Click
Dim Language As String
Language = ComboBox1.Text
If Language = "Visual Basic" Then
MsgBox("We have a winner!")
Else
MsgBox(Language & " is not a bad language.")
End If
End Sub
End Class Partial Public Class Form1
Inherits System.Windows.Forms.Form
<System.Diagnostics.DebuggerNonUserCode()> _
Public Sub New()
MyBase.New()
"This call is required by the Windows Form Designer.
InitializeComponent()
End Sub
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.Label1 = New System.Windows.Forms.Label
Me.Button1 = New System.Windows.Forms.Button
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.SuspendLayout()
"
"Label1
"
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(13, 22)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(160, 14)
Me.Label1.TabIndex = 0
Me.Label1.Text = "What"s your favorite language?"
"
"Button1
"
Me.Button1.Location = New System.Drawing.Point(13, 70)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(267, 23)
Me.Button1.TabIndex = 2
Me.Button1.Text = "Evaluate my choice"
"
"ComboBox1
"
Me.ruboBox1.FormattingEnabled = True
Me.ruboBox1.Items.AddRange(New Object() {"C++", "C#", "Java", "Visual Basic", "Cobol"})
Me.ruboBox1.Location = New System.Drawing.Point(13, 43)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(267, 21)
Me.ruboBox1.TabIndex = 1
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 117)
Me.Controls.Add(Me.ruboBox1)
Me.Controls.Add(Me.Button1)
Me.Controls.Add(Me.Label1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents ComboBox1 As System.Windows.Forms.ruboBox
End Class
</source>
ComboBox.ValueMember
<source lang="vbnet"> Imports System Imports System.Data Imports System.Data.OleDb Imports System.Data.SqlClient Imports System.Collections Imports System.Windows.Forms Imports System.Resources Public Class MainClass
Shared Sub Main()
Dim form1 As Form = New Form1()
Application.Run(form1)
End Sub
End Class
Public Class Form1
"Form level variables
Private strConnectionString As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=Employee.mdb;"
Private objConnection As OleDbConnection
Private objCommand As OleDbCommand
Private objDataAdapter As OleDbDataAdapter
Private objDataTable As DataTable
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Me.Load
"Initialize the Connection object
objConnection = New OleDbConnection(strConnectionString)
"Initialize the Command object
objCommand = New OleDbCommand("SELECT ID, FirstName " & _
"FROM Employee", objConnection)
"Initialize the DataAdapter object and set the SelectCommand property
objDataAdapter = New OleDbDataAdapter
objDataAdapter.SelectCommand = objCommand
"Initialize the DataTable object
objDataTable = New DataTable
"Populate the DataTable
objDataAdapter.Fill(objDataTable)
"Bind the DataTable to the ComboBox
ComboBox1.DataSource = objDataTable
ComboBox1.DisplayMember = "FirstName"
ComboBox1.ValueMember = "ID"
"Clean up
objDataAdapter.Dispose()
objDataAdapter = Nothing
objCommand.Dispose()
objCommand = Nothing
objConnection.Dispose()
objConnection = Nothing
End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1
Inherits System.Windows.Forms.Form
"Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.ruboBox1 = New System.Windows.Forms.ruboBox
Me.Label1 = New System.Windows.Forms.Label
Me.SuspendLayout()
"
"ComboBox1
"
Me.ruboBox1.DropDownStyle = System.Windows.Forms.ruboBoxStyle.DropDownList
Me.ruboBox1.FormattingEnabled = True
Me.ruboBox1.Location = New System.Drawing.Point(76, 13)
Me.ruboBox1.Name = "ComboBox1"
Me.ruboBox1.Size = New System.Drawing.Size(205, 21)
Me.ruboBox1.TabIndex = 3
"
"Label1
"
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(13, 16)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(41, 13)
Me.Label1.TabIndex = 2
Me.Label1.Text = "Name"
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 76)
Me.Controls.Add(Me.ruboBox1)
Me.Controls.Add(Me.Label1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents ComboBox1 As System.Windows.Forms.ruboBox
Friend WithEvents Label1 As System.Windows.Forms.Label
End Class
</source>
