FolderBrowserDialog.SelectedPath Propiedad
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Obtiene o establece la ruta de acceso seleccionada por el usuario.
public:
property System::String ^ SelectedPath { System::String ^ get(); void set(System::String ^ value); };[System.ComponentModel.Browsable(true)]
public string SelectedPath { get; set; }[<System.ComponentModel.Browsable(true)>]
member this.SelectedPath : string with get, setPublic Property SelectedPath As StringValor de propiedad
Ruta de acceso a la carpeta inicialmente seleccionada en el cuadro de diálogo o última carpeta seleccionada por el usuario. El valor predeterminado es una cadena vacía ("").
- Atributos
Ejemplos
En el ejemplo de código siguiente se crea una aplicación que permite al usuario abrir archivos de texto enriquecido (.rtf) dentro del RichTextBox control .
// The following example displays an application that provides the ability to
// open rich text files (rtf) into the RichTextBox. The example demonstrates
// using the FolderBrowserDialog to set the default directory for opening files.
// The OpenFileDialog is used to open the file.
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::IO;
public ref class FolderBrowserDialogExampleForm: public System::Windows::Forms::Form
{
private:
FolderBrowserDialog^ folderBrowserDialog1;
OpenFileDialog^ openFileDialog1;
RichTextBox^ richTextBox1;
MainMenu^ mainMenu1;
MenuItem^ fileMenuItem;
MenuItem^ openMenuItem;
MenuItem^ folderMenuItem;
MenuItem^ closeMenuItem;
String^ openFileName;
String^ folderName;
bool fileOpened;
public:
// Constructor.
FolderBrowserDialogExampleForm()
{
fileOpened = false;
this->mainMenu1 = gcnew System::Windows::Forms::MainMenu;
this->fileMenuItem = gcnew System::Windows::Forms::MenuItem;
this->openMenuItem = gcnew System::Windows::Forms::MenuItem;
this->folderMenuItem = gcnew System::Windows::Forms::MenuItem;
this->closeMenuItem = gcnew System::Windows::Forms::MenuItem;
this->openFileDialog1 = gcnew System::Windows::Forms::OpenFileDialog;
this->folderBrowserDialog1 = gcnew System::Windows::Forms::FolderBrowserDialog;
this->richTextBox1 = gcnew System::Windows::Forms::RichTextBox;
this->mainMenu1->MenuItems->Add( this->fileMenuItem );
array<System::Windows::Forms::MenuItem^>^temp0 = {this->openMenuItem,this->closeMenuItem,this->folderMenuItem};
this->fileMenuItem->MenuItems->AddRange( temp0 );
this->fileMenuItem->Text = "File";
this->openMenuItem->Text = "Open...";
this->openMenuItem->Click += gcnew System::EventHandler( this, &FolderBrowserDialogExampleForm::openMenuItem_Click );
this->folderMenuItem->Text = "Select Directory...";
this->folderMenuItem->Click += gcnew System::EventHandler( this, &FolderBrowserDialogExampleForm::folderMenuItem_Click );
this->closeMenuItem->Text = "Close";
this->closeMenuItem->Click += gcnew System::EventHandler( this, &FolderBrowserDialogExampleForm::closeMenuItem_Click );
this->closeMenuItem->Enabled = false;
this->openFileDialog1->DefaultExt = "rtf";
this->openFileDialog1->Filter = "rtf files (*.rtf)|*.rtf";
// Set the help text description for the FolderBrowserDialog.
this->folderBrowserDialog1->Description = "Select the directory that you want to use as the default.";
// Do not allow the user to create new files via the FolderBrowserDialog.
this->folderBrowserDialog1->ShowNewFolderButton = false;
// Default to the My Documents folder.
this->folderBrowserDialog1->RootFolder = Environment::SpecialFolder::Personal;
this->richTextBox1->AcceptsTab = true;
this->richTextBox1->Location = System::Drawing::Point( 8, 8 );
this->richTextBox1->Size = System::Drawing::Size( 280, 344 );
this->richTextBox1->Anchor = static_cast<AnchorStyles>(AnchorStyles::Top | AnchorStyles::Left | AnchorStyles::Bottom | AnchorStyles::Right);
this->ClientSize = System::Drawing::Size( 296, 360 );
this->Controls->Add( this->richTextBox1 );
this->Menu = this->mainMenu1;
this->Text = "RTF Document Browser";
}
private:
// Bring up a dialog to open a file.
void openMenuItem_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// If a file is not opened then set the initial directory to the
// FolderBrowserDialog::SelectedPath value.
if ( !fileOpened )
{
openFileDialog1->InitialDirectory = folderBrowserDialog1->SelectedPath;
openFileDialog1->FileName = nullptr;
}
// Display the openFile Dialog.
System::Windows::Forms::DialogResult result = openFileDialog1->ShowDialog();
// OK button was pressed.
if ( result == ::DialogResult::OK )
{
openFileName = openFileDialog1->FileName;
try
{
// Output the requested file in richTextBox1.
Stream^ s = openFileDialog1->OpenFile();
richTextBox1->LoadFile( s, RichTextBoxStreamType::RichText );
s->Close();
fileOpened = true;
}
catch ( Exception^ exp )
{
MessageBox::Show( String::Concat( "An error occurred while attempting to load the file. The error is: ", System::Environment::NewLine, exp, System::Environment::NewLine ) );
fileOpened = false;
}
Invalidate();
closeMenuItem->Enabled = fileOpened;
}
// Cancel button was pressed.
else
// Cancel button was pressed.
if ( result == ::DialogResult::Cancel )
{
return;
}
}
// Close the current file.
void closeMenuItem_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
richTextBox1->Text = "";
fileOpened = false;
closeMenuItem->Enabled = false;
}
// Bring up a dialog to chose a folder path in which to open/save a file.
void folderMenuItem_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Show the FolderBrowserDialog.
System::Windows::Forms::DialogResult result = folderBrowserDialog1->ShowDialog();
if ( result == ::DialogResult::OK )
{
folderName = folderBrowserDialog1->SelectedPath;
if ( !fileOpened )
{
// No file is opened, bring up openFileDialog in selected path.
openFileDialog1->InitialDirectory = folderName;
openFileDialog1->FileName = nullptr;
openMenuItem->PerformClick();
}
}
}
};
// The main entry point for the application.
int main()
{
Application::Run( gcnew FolderBrowserDialogExampleForm );
}
// The following example displays an application that provides the ability to
// open rich text files (rtf) into the RichTextBox. The example demonstrates
// using the FolderBrowserDialog to set the default directory for opening files.
// The OpenFileDialog class is used to open the file.
using System;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
public class FolderBrowserDialogExampleForm : System.Windows.Forms.Form
{
private FolderBrowserDialog folderBrowserDialog1;
private OpenFileDialog openFileDialog1;
private RichTextBox richTextBox1;
private MainMenu mainMenu1;
private MenuItem fileMenuItem, openMenuItem;
private MenuItem folderMenuItem, closeMenuItem;
private string openFileName, folderName;
private bool fileOpened = false;
// The main entry point for the application.
[STAThreadAttribute]
static void Main()
{
Application.Run(new FolderBrowserDialogExampleForm());
}
// Constructor.
public FolderBrowserDialogExampleForm()
{
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.fileMenuItem = new System.Windows.Forms.MenuItem();
this.openMenuItem = new System.Windows.Forms.MenuItem();
this.folderMenuItem = new System.Windows.Forms.MenuItem();
this.closeMenuItem = new System.Windows.Forms.MenuItem();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.folderBrowserDialog1 = new System.Windows.Forms.FolderBrowserDialog();
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.mainMenu1.MenuItems.Add(this.fileMenuItem);
this.fileMenuItem.MenuItems.AddRange(
new System.Windows.Forms.MenuItem[] {this.openMenuItem,
this.closeMenuItem,
this.folderMenuItem});
this.fileMenuItem.Text = "File";
this.openMenuItem.Text = "Open...";
this.openMenuItem.Click += new System.EventHandler(this.openMenuItem_Click);
this.folderMenuItem.Text = "Select Directory...";
this.folderMenuItem.Click += new System.EventHandler(this.folderMenuItem_Click);
this.closeMenuItem.Text = "Close";
this.closeMenuItem.Click += new System.EventHandler(this.closeMenuItem_Click);
this.closeMenuItem.Enabled = false;
this.openFileDialog1.DefaultExt = "rtf";
this.openFileDialog1.Filter = "rtf files (*.rtf)|*.rtf";
// Set the help text description for the FolderBrowserDialog.
this.folderBrowserDialog1.Description =
"Select the directory that you want to use as the default.";
// Do not allow the user to create new files via the FolderBrowserDialog.
this.folderBrowserDialog1.ShowNewFolderButton = false;
// Default to the My Documents folder.
this.folderBrowserDialog1.RootFolder = Environment.SpecialFolder.Personal;
this.richTextBox1.AcceptsTab = true;
this.richTextBox1.Location = new System.Drawing.Point(8, 8);
this.richTextBox1.Size = new System.Drawing.Size(280, 344);
this.richTextBox1.Anchor = AnchorStyles.Top | AnchorStyles.Left |
AnchorStyles.Bottom | AnchorStyles.Right;
this.ClientSize = new System.Drawing.Size(296, 360);
this.Controls.Add(this.richTextBox1);
this.Menu = this.mainMenu1;
this.Text = "RTF Document Browser";
}
// Bring up a dialog to open a file.
private void openMenuItem_Click(object sender, System.EventArgs e)
{
// If a file is not opened, then set the initial directory to the
// FolderBrowserDialog.SelectedPath value.
if (!fileOpened) {
openFileDialog1.InitialDirectory = folderBrowserDialog1.SelectedPath;
openFileDialog1.FileName = null;
}
// Display the openFile dialog.
DialogResult result = openFileDialog1.ShowDialog();
// OK button was pressed.
if(result == DialogResult.OK)
{
openFileName = openFileDialog1.FileName;
try
{
// Output the requested file in richTextBox1.
Stream s = openFileDialog1.OpenFile();
richTextBox1.LoadFile(s, RichTextBoxStreamType.RichText);
s.Close();
fileOpened = true;
}
catch(Exception exp)
{
MessageBox.Show("An error occurred while attempting to load the file. The error is:"
+ System.Environment.NewLine + exp.ToString() + System.Environment.NewLine);
fileOpened = false;
}
Invalidate();
closeMenuItem.Enabled = fileOpened;
}
// Cancel button was pressed.
else if(result == DialogResult.Cancel)
{
return;
}
}
// Close the current file.
private void closeMenuItem_Click(object sender, System.EventArgs e)
{
richTextBox1.Text = "";
fileOpened = false;
closeMenuItem.Enabled = false;
}
// Bring up a dialog to chose a folder path in which to open or save a file.
private void folderMenuItem_Click(object sender, System.EventArgs e)
{
// Show the FolderBrowserDialog.
DialogResult result = folderBrowserDialog1.ShowDialog();
if( result == DialogResult.OK )
{
folderName = folderBrowserDialog1.SelectedPath;
if(!fileOpened)
{
// No file is opened, bring up openFileDialog in selected path.
openFileDialog1.InitialDirectory = folderName;
openFileDialog1.FileName = null;
openMenuItem.PerformClick();
}
}
}
}
' The following example displays an application that provides the ability to
' open rich text files (rtf) into the RichTextBox. The example demonstrates
' using the FolderBrowserDialog to set the default directory for opening files.
' The OpenFileDialog class is used to open the file.
Imports System.Drawing
Imports System.Windows.Forms
Imports System.IO
Public Class FolderBrowserDialogExampleForm
Inherits Form
Private folderBrowserDialog1 As FolderBrowserDialog
Private openFileDialog1 As OpenFileDialog
Private richTextBox1 As RichTextBox
Private mainMenu1 As MainMenu
Private fileMenuItem As MenuItem
Private WithEvents folderMenuItem As MenuItem, _
closeMenuItem As MenuItem, _
openMenuItem As MenuItem
Private openFileName As String, folderName As String
Private fileOpened As Boolean = False
Public Sub New()
Me.mainMenu1 = New System.Windows.Forms.MainMenu()
Me.fileMenuItem = New System.Windows.Forms.MenuItem()
Me.openMenuItem = New System.Windows.Forms.MenuItem()
Me.folderMenuItem = New System.Windows.Forms.MenuItem()
Me.closeMenuItem = New System.Windows.Forms.MenuItem()
Me.openFileDialog1 = New System.Windows.Forms.OpenFileDialog()
Me.folderBrowserDialog1 = New System.Windows.Forms.FolderBrowserDialog()
Me.richTextBox1 = New System.Windows.Forms.RichTextBox()
Me.mainMenu1.MenuItems.Add(Me.fileMenuItem)
Me.fileMenuItem.MenuItems.AddRange( _
New System.Windows.Forms.MenuItem() {Me.openMenuItem, _
Me.closeMenuItem, _
Me.folderMenuItem})
Me.fileMenuItem.Text = "File"
Me.openMenuItem.Text = "Open..."
Me.folderMenuItem.Text = "Select Directory..."
Me.closeMenuItem.Text = "Close"
Me.closeMenuItem.Enabled = False
Me.openFileDialog1.DefaultExt = "rtf"
Me.openFileDialog1.Filter = "rtf files (*.rtf)|*.rtf"
' Set the Help text description for the FolderBrowserDialog.
Me.folderBrowserDialog1.Description = _
"Select the directory that you want to use As the default."
' Do not allow the user to create New files via the FolderBrowserDialog.
Me.folderBrowserDialog1.ShowNewFolderButton = False
' Default to the My Documents folder.
Me.folderBrowserDialog1.RootFolder = Environment.SpecialFolder.Personal
Me.richTextBox1.AcceptsTab = True
Me.richTextBox1.Location = New System.Drawing.Point(8, 8)
Me.richTextBox1.Size = New System.Drawing.Size(280, 344)
Me.richTextBox1.Anchor = AnchorStyles.Top Or AnchorStyles.Left Or _
AnchorStyles.Bottom Or AnchorStyles.Right
Me.ClientSize = New System.Drawing.Size(296, 360)
Me.Controls.Add(Me.richTextBox1)
Me.Menu = Me.mainMenu1
Me.Text = "RTF Document Browser"
End Sub
<STAThread()> _
Shared Sub Main()
Application.Run(New FolderBrowserDialogExampleForm())
End Sub
' Bring up a dialog to open a file.
Private Sub openMenuItem_Click(sender As object, e As System.EventArgs) _
Handles openMenuItem.Click
' If a file is not opened, then set the initial directory to the
' FolderBrowserDialog.SelectedPath value.
If (not fileOpened) Then
openFileDialog1.InitialDirectory = folderBrowserDialog1.SelectedPath
openFileDialog1.FileName = nothing
End If
' Display the openFile dialog.
Dim result As DialogResult = openFileDialog1.ShowDialog()
' OK button was pressed.
If (result = DialogResult.OK) Then
openFileName = openFileDialog1.FileName
Try
' Output the requested file in richTextBox1.
Dim s As Stream = openFileDialog1.OpenFile()
richTextBox1.LoadFile(s, RichTextBoxStreamType.RichText)
s.Close()
fileOpened = True
Catch exp As Exception
MessageBox.Show("An error occurred while attempting to load the file. The error is:" _
+ System.Environment.NewLine + exp.ToString() + System.Environment.NewLine)
fileOpened = False
End Try
Invalidate()
closeMenuItem.Enabled = fileOpened
' Cancel button was pressed.
ElseIf (result = DialogResult.Cancel) Then
return
End If
End Sub
' Close the current file.
Private Sub closeMenuItem_Click(sender As object, e As System.EventArgs) _
Handles closeMenuItem.Click
richTextBox1.Text = ""
fileOpened = False
closeMenuItem.Enabled = False
End Sub
' Bring up a dialog to chose a folder path in which to open or save a file.
Private Sub folderMenuItem_Click(sender As object, e As System.EventArgs) _
Handles folderMenuItem.Click
' Show the FolderBrowserDialog.
Dim result As DialogResult = folderBrowserDialog1.ShowDialog()
If ( result = DialogResult.OK ) Then
folderName = folderBrowserDialog1.SelectedPath
If (not fileOpened) Then
' No file is opened, bring up openFileDialog in selected path.
openFileDialog1.InitialDirectory = folderName
openFileDialog1.FileName = nothing
openMenuItem.PerformClick()
End If
End If
End Sub
End Class
Comentarios
Si la SelectedPath propiedad se establece antes de mostrar el cuadro de diálogo, la carpeta con esta ruta de acceso será la carpeta seleccionada, siempre que se establezca en SelectedPath una ruta de acceso absoluta de (o más precisamente, apunte a una subcarpeta RootFolder del espacio de nombres del shell representado por RootFolder).
ShowDialog Si devuelve OK, lo que significa que el usuario ha clic en el botón Aceptar, la SelectedPath propiedad devolverá una cadena que contiene la ruta de acceso a la carpeta seleccionada. Si ShowDialog devuelve Cancel, lo que significa que el usuario canceló fuera del cuadro de diálogo, esta propiedad tendrá el mismo valor que tenía antes de mostrar el cuadro de diálogo. Si el usuario selecciona una carpeta que no tiene una ruta de acceso física (por ejemplo, Mi equipo), se deshabilitará el botón Aceptar del cuadro de diálogo.