в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

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2010-05-26T12:57:21Z

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==File Open/Save dialog==

<source lang="vbnet">Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class FileSaveOpenDialog
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Public Sub New()
MyBase.New()
InitializeComponent()
End Sub
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
Private components As System.ruponentModel.IContainer
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents Button2 As System.Windows.Forms.Button
Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
Friend WithEvents SaveFileDialog1 As System.Windows.Forms.SaveFileDialog
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.Button1 = New System.Windows.Forms.Button
Me.Button2 = New System.Windows.Forms.Button
Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
Me.SaveFileDialog1 = New System.Windows.Forms.SaveFileDialog
Me.SuspendLayout()
"
"Button1
"
Me.Button1.Location = New System.Drawing.Point(32, 32)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(88, 32)
Me.Button1.TabIndex = 0
Me.Button1.Text = "Open"
"
"Button2
"
Me.Button2.Location = New System.Drawing.Point(160, 32)
Me.Button2.Name = "Button2"
Me.Button2.Size = New System.Drawing.Size(88, 32)
Me.Button2.TabIndex = 1
Me.Button2.Text = "Save"
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 110)
Me.Controls.Add(Me.Button2)
Me.Controls.Add(Me.Button1)
Me.ResumeLayout(False)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.ShowDialog()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
SaveFileDialog1.ShowDialog()
End Sub
End Class</source>

==Get selected file name in a OpenFileDialog==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class OpenFileDialogSelectedFileName
public Shared Sub Main
Dim FileDB As New OpenFileDialog()
If (FileDB.ShowDialog() = DialogResult.OK) Then
Console.WriteLine("File: " & FileDB.FileName)
Else
Console.WriteLine("User selected Cancel")
End If
End Sub
End class</source>

==Open File Dialog Filter==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PictureBoxImageFromOpenFileDialog
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Public Sub New()
MyBase.New()
InitializeComponent()
End Sub
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
Private components As System.ruponentModel.IContainer
Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.PictureBox1 = New System.Windows.Forms.PictureBox
Me.Button1 = New System.Windows.Forms.Button
Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
Me.SuspendLayout()
"
"PictureBox1
"
Me.PictureBox1.Location = New System.Drawing.Point(16, 16)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(248, 176)
Me.PictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize
Me.PictureBox1.TabIndex = 0
Me.PictureBox1.TabStop = False
"
"Button1
"
Me.Button1.Location = New System.Drawing.Point(96, 208)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(88, 24)
Me.Button1.TabIndex = 1
Me.Button1.Text = "Open"
"
"OpenFileDialog1
"
Me.OpenFileDialog1.Filter = "bmp(*.bmp)|*.bmp"
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 266)
Me.Controls.Add(Me.Button1)
Me.Controls.Add(Me.PictureBox1)
Me.ResumeLayout(False)
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim pic As Image
OpenFileDialog1.ShowDialog()
pic = New Bitmap(OpenFileDialog1.FileName)
PictureBox1.Image = pic
End Sub
End Class</source>

==Prevent dialog box from validating file==

<source lang="vbnet">Imports System.IO
Imports System.Windows.Forms
Module Module1
Sub Main()
Dim FileDB As New OpenFileDialog()
FileDB.Filter = "All files | *.* | Text files | *.txt"
FileDB.FilterIndex = 2
FileDB.InitialDirectory = "C:\Temp"
FileDB.AddExtension = True
FileDB.DefaultExt = "txt"
" Prevent dialog box from validating file
FileDB.CheckFileExists = False
FileDB.CheckPathExists = False
If (FileDB.ShowDialog() = DialogResult.OK) Then
Dim SourceFile As StreamReader
Try
SourceFile = New StreamReader(FileDB.FileName)
Console.WriteLine(SourceFile.ReadToEnd())
SourceFile.Close()
Catch Except As Exception
Console.WriteLine("Error: " & Except.Message)
End Try
Else
Console.WriteLine("User selected Cancel")
End If
End Sub
End Module</source>

==Set InitialDirectory and FilterIndex for OpenFileDialog==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class OpenFileDialogInitDirectory
public Shared Sub Main
Dim FileDB As New OpenFileDialog()
FileDB.Filter = "All files | *.* | Word files | *.doc | Text files | *.txt"
FileDB.FilterIndex = 3
FileDB.InitialDirectory = "C:\Temp"
If (FileDB.ShowDialog() = DialogResult.OK) Then
Console.WriteLine("File: " & FileDB.FileName)
Else
Console.WriteLine("User selected Cancel")
End If
End Sub
End class</source>

==Set OpenFileDialog Filter and get selected file name==

<source lang="vbnet">Imports System.Windows.Forms
public class FileOpenDialogFilter
public Shared Sub Main
Dim openFileDialog1 As System.Windows.Forms.OpenFileDialog
openFileDialog1 = New System.Windows.Forms.OpenFileDialog()

openFileDialog1.Filter = "Word (*.doc) |*.doc;*.rtf|(*.txt) |*.txt|(*.*) |*.*"
If openFileDialog1.ShowDialog() = DialogResult.OK Then
Console.WriteLine(openFileDialog1.FileName)
End If
End Sub
End class</source>

==Use OpenFileDialog to load image to PictureBox==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class OpenFileDialogPicture
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 OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
Me.Button1 = New System.Windows.Forms.Button
Me.PictureBox1 = New System.Windows.Forms.PictureBox
Me.SuspendLayout()
"
"OpenFileDialog1
"
Me.OpenFileDialog1.Filter = "JPEG files (*.jpg)|*.jpg|GIF files (*.gif)|*.gif|All files (*.*)|*.*"
"
"Button1
"
Me.Button1.Location = New System.Drawing.Point(96, 88)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(88, 23)
Me.Button1.TabIndex = 0
Me.Button1.Text = "Show Dialog"
"
"PictureBox1
"
Me.PictureBox1.Location = New System.Drawing.Point(88, 144)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(104, 88)
Me.PictureBox1.TabIndex = 1
Me.PictureBox1.TabStop = False
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.PictureBox1)
Me.Controls.Add(Me.Button1)
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
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
PictureBox1.Image = Image.FromFile(OpenFileDialog1.FileName)
End If
End Sub
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ruponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
End Sub
End Class</source>

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VB.Net Tutorial/GUI/OpenFileDialog - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия