в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

Admin: 1 версия

2010-05-26T12:57:22Z

1 версия

Новая страница

==Copy and paste Object==

<source lang="vbnet">" Requires a reference to System.Xml.
Imports System.Xml.Serialization
Imports System.IO
Imports System.Windows.Forms
public class CopyPasteEmployee
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class

Public Class Form1
<Serializable()> _
Public Class Employee
Public FirstName As String
Public LastName As String
Public Sub New()
End Sub
Public Sub New(ByVal first_name As String, ByVal last_name As String)
FirstName = first_name
LastName = last_name
End Sub
End Class
" Copy the Employee to the clipboard.
Private Sub btnCopy_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCopy.Click
Dim emp As New Employee(txtFirstName.Text, txtLastName.Text)
Dim data_object As New DataObject
data_object.SetData("Employee", emp)
Clipboard.SetDataObject(data_object)
End Sub
" Paste data from the clipboard.
Private Sub btnPaste_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPaste.Click
Dim data_object As IDataObject = Clipboard.GetDataObject()
If data_object.GetDataPresent("Employee") Then
Dim emp As Employee = DirectCast(data_object.GetData("Employee"), Employee)
txtPasteFirstName.Text = emp.FirstName
txtPasteLastName.Text = emp.LastName
End If
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.btnPaste = New System.Windows.Forms.Button
Me.txtPasteLastName = New System.Windows.Forms.TextBox
Me.txtPasteFirstName = New System.Windows.Forms.TextBox
Me.Label3 = New System.Windows.Forms.Label
Me.Label4 = New System.Windows.Forms.Label
Me.btnCopy = New System.Windows.Forms.Button
Me.txtLastName = New System.Windows.Forms.TextBox
Me.txtFirstName = New System.Windows.Forms.TextBox
Me.Label2 = New System.Windows.Forms.Label
Me.Label1 = New System.Windows.Forms.Label
Me.SuspendLayout()
"
"btnPaste
"
Me.btnPaste.Location = New System.Drawing.Point(232, 96)
Me.btnPaste.Name = "btnPaste"
Me.btnPaste.Size = New System.Drawing.Size(48, 24)
Me.btnPaste.TabIndex = 22
Me.btnPaste.Text = "Paste"
"
"txtPasteLastName
"
Me.txtPasteLastName.Location = New System.Drawing.Point(72, 112)
Me.txtPasteLastName.Name = "txtPasteLastName"
Me.txtPasteLastName.Size = New System.Drawing.Size(136, 20)
Me.txtPasteLastName.TabIndex = 21
"
"txtPasteFirstName
"
Me.txtPasteFirstName.Location = New System.Drawing.Point(72, 88)
Me.txtPasteFirstName.Name = "txtPasteFirstName"
Me.txtPasteFirstName.Size = New System.Drawing.Size(136, 20)
Me.txtPasteFirstName.TabIndex = 20
"
"Label3
"
Me.Label3.AutoSize = True
Me.Label3.Location = New System.Drawing.Point(8, 112)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(54, 13)
Me.Label3.TabIndex = 19
Me.Label3.Text = "Last Name"
"
"Label4
"
Me.Label4.AutoSize = True
Me.Label4.Location = New System.Drawing.Point(8, 88)
Me.Label4.Name = "Label4"
Me.Label4.Size = New System.Drawing.Size(53, 13)
Me.Label4.TabIndex = 18
Me.Label4.Text = "First Name"
"
"btnCopy
"
Me.btnCopy.Location = New System.Drawing.Point(232, 16)
Me.btnCopy.Name = "btnCopy"
Me.btnCopy.Size = New System.Drawing.Size(48, 24)
Me.btnCopy.TabIndex = 17
Me.btnCopy.Text = "Copy"
"
"txtLastName
"
Me.txtLastName.Location = New System.Drawing.Point(72, 32)
Me.txtLastName.Name = "txtLastName"
Me.txtLastName.Size = New System.Drawing.Size(136, 20)
Me.txtLastName.TabIndex = 16
Me.txtLastName.Text = "AAAAAA"
"
"txtFirstName
"
Me.txtFirstName.Location = New System.Drawing.Point(72, 8)
Me.txtFirstName.Name = "txtFirstName"
Me.txtFirstName.Size = New System.Drawing.Size(136, 20)
Me.txtFirstName.TabIndex = 15
Me.txtFirstName.Text = "BBBBB"
"
"Label2
"
Me.Label2.AutoSize = True
Me.Label2.Location = New System.Drawing.Point(8, 32)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(54, 13)
Me.Label2.TabIndex = 14
Me.Label2.Text = "Last Name"
"
"Label1
"
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(8, 8)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(53, 13)
Me.Label1.TabIndex = 13
Me.Label1.Text = "First 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(288, 139)
Me.Controls.Add(Me.btnPaste)
Me.Controls.Add(Me.txtPasteLastName)
Me.Controls.Add(Me.txtPasteFirstName)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label4)
Me.Controls.Add(Me.btnCopy)
Me.Controls.Add(Me.txtLastName)
Me.Controls.Add(Me.txtFirstName)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.Label1)
Me.Name = "Form1"
Me.Text = "CopyPasteEmployee"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents btnPaste As System.Windows.Forms.Button
Friend WithEvents txtPasteLastName As System.Windows.Forms.TextBox
Friend WithEvents txtPasteFirstName As System.Windows.Forms.TextBox
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label4 As System.Windows.Forms.Label
Friend WithEvents btnCopy As System.Windows.Forms.Button
Friend WithEvents txtLastName As System.Windows.Forms.TextBox
Friend WithEvents txtFirstName As System.Windows.Forms.TextBox
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label1 As System.Windows.Forms.Label
End Class</source>

==Drop a file==

<source lang="vbnet">Imports System.Data
Imports System.Data.OleDb
Imports System.Windows.Forms
public class FileDrop
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
" Allow Copy if there is FileDrop data.
Private Sub lblDropTarget_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragEnter
If e.Data.GetDataPresent(DataFormats.FileDrop) Then
e.Effect = DragDropEffects.Copy
Else
e.Effect = DragDropEffects.None
End If
End Sub
" Display the dropped file names.
Private Sub lblDropTarget_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragDrop
lstFiles.Items.Clear()
Dim file_names As String() = DirectCast(e.Data.GetData(DataFormats.FileDrop), String())
For Each file_name As String In file_names
lstFiles.Items.Add(file_name)
Next file_name
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.lstFiles = New System.Windows.Forms.ListBox
Me.lblDropTarget = New System.Windows.Forms.Label
Me.SuspendLayout()
"
"lstFiles
"
Me.lstFiles.Dock = System.Windows.Forms.DockStyle.Fill
Me.lstFiles.FormattingEnabled = True
Me.lstFiles.Location = New System.Drawing.Point(0, 48)
Me.lstFiles.Name = "lstFiles"
Me.lstFiles.Size = New System.Drawing.Size(274, 160)
Me.lstFiles.TabIndex = 3
"
"lblDropTarget
"
Me.lblDropTarget.AllowDrop = True
Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
Me.lblDropTarget.Dock = System.Windows.Forms.DockStyle.Top
Me.lblDropTarget.Location = New System.Drawing.Point(0, 0)
Me.lblDropTarget.Name = "lblDropTarget"
Me.lblDropTarget.Size = New System.Drawing.Size(274, 48)
Me.lblDropTarget.TabIndex = 2
Me.lblDropTarget.Text = "Drop Target"
Me.lblDropTarget.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(274, 210)
Me.Controls.Add(Me.lstFiles)
Me.Controls.Add(Me.lblDropTarget)
Me.Name = "Form1"
Me.Text = "AcceptFiles"
Me.ResumeLayout(False)
End Sub
Friend WithEvents lstFiles As System.Windows.Forms.ListBox
Friend WithEvents lblDropTarget As System.Windows.Forms.Label
End Class</source>

← Предыдущая	Версия 16:40, 26 мая 2010
(нет различий)

VB.Net Tutorial/GUI/Drag Drop - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия