RichTextBox.SaveFile Metoda

public:
 void SaveFile(System::IO::Stream ^ data, System::Windows::Forms::RichTextBoxStreamType fileType);

public void SaveFile (System.IO.Stream data, System.Windows.Forms.RichTextBoxStreamType fileType);

member this.SaveFile : System.IO.Stream * System.Windows.Forms.RichTextBoxStreamType -> unit

Public Sub SaveFile (data As Stream, fileType As RichTextBoxStreamType)

Parametry

Výjimky

Příklady

Následující příklad kódu ukazuje použití SaveFile metod a LoadFile s datovými proudy. Ukazuje také použití FileDialog.FileNamečlenů , FileDialog.DefaultExt, SaveFileDialog.CreatePrompta SaveFileDialog.OverwritePrompt .

Toto je kompletní příklad, který je připravený ke spuštění, když ho zkopírujete do projektu.

using namespace System;
using namespace System::Drawing;
using namespace System::IO;
using namespace System::Windows::Forms;

public ref class Form1: public Form
{
public private:
   RichTextBox^ RichTextBox1;
   Button^ Button1;
   RichTextBox^ RichTextBox2;
   Button^ Button2;
   SaveFileDialog^ SaveFileDialog1;

public:
   Form1()
      : Form()
   {
      userInput = gcnew MemoryStream;
      this->RichTextBox1 = gcnew RichTextBox;
      this->Button1 = gcnew Button;
      this->RichTextBox2 = gcnew RichTextBox;
      this->Button2 = gcnew Button;
      this->SaveFileDialog1 = gcnew SaveFileDialog;
      this->SuspendLayout();
      this->RichTextBox1->Location = Point( 24, 64 );
      this->RichTextBox1->Name = "RichTextBox1";
      this->RichTextBox1->TabIndex = 0;
      this->RichTextBox1->Text = "Type something here.";
      this->Button1->Location = Point( 96, 16 );
      this->Button1->Name = "Button1";
      this->Button1->Size = Size( 96, 24 );
      this->Button1->TabIndex = 1;
      this->Button1->Text = "Save To Stream";
      this->Button1->Click += 
          gcnew EventHandler( this, &Form1::Button1_Click );
      this->RichTextBox2->Location = Point( 152, 64 );
      this->RichTextBox2->Name = "RichTextBox2";
      this->RichTextBox2->TabIndex = 3;
      this->RichTextBox2->Text = "It will be added to the stream "
      "and appear here.";
      this->Button2->Location = Point( 104, 200 );
      this->Button2->Name = "Button2";
      this->Button2->Size = Size( 88, 32 );
      this->Button2->TabIndex = 4;
      this->Button2->Text = "Save Stream To File";
      this->Button2->Click += 
          gcnew EventHandler( this, &Form1::Button2_Click );
      this->ClientSize = Size( 292, 266 );
      this->Controls->Add( this->Button2 );
      this->Controls->Add( this->RichTextBox2 );
      this->Controls->Add( this->Button1 );
      this->Controls->Add( this->RichTextBox1 );
      this->Name = "Form1";
      this->Text = "Form1";
      this->ResumeLayout( false );
   }

   // Declare a new memory stream.
   MemoryStream^ userInput;

private:

   // Save the content of RichTextBox1 to the memory stream, 
   // appending a LineFeed character.  
   void Button1_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      RichTextBox1->SaveFile( userInput, RichTextBoxStreamType::PlainText );
      userInput->WriteByte( 13 );
      
      // Display the entire contents of the stream,
      // by setting its position to 0, to RichTextBox2.
      userInput->Position = 0;
      RichTextBox2->LoadFile( userInput, RichTextBoxStreamType::PlainText );
   }


   // Shows the use of a SaveFileDialog to save a MemoryStream to a file.
   void Button2_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      
      // Set the properties on SaveFileDialog1 so the user is 
      // prompted to create the file if it doesn't exist 
      // or overwrite the file if it does exist.
      SaveFileDialog1->CreatePrompt = true;
      SaveFileDialog1->OverwritePrompt = true;
      
      // Set the file name to myText.txt, set the type filter
      // to text files, and set the initial directory to the
      // MyDocuments folder.
      SaveFileDialog1->FileName = "myText";
      // DefaultExt is only used when "All files" is selected from 
      // the filter box and no extension is specified by the user.
      SaveFileDialog1->DefaultExt = "txt";
      SaveFileDialog1->Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
      SaveFileDialog1->InitialDirectory = 
          Environment->GetFolderPath(Environment::SpecialFolder::MyDocuments);
      
      // Call ShowDialog and check for a return value of DialogResult.OK,
      // which indicates that the file was saved. 
      DialogResult result = SaveFileDialog1->ShowDialog();
      Stream^ fileStream;
      if ( result == DialogResult::OK )
      {
         fileStream = SaveFileDialog1->OpenFile();
         userInput->Position = 0;
         userInput->WriteTo( fileStream );
         fileStream->Close();
      }
   }
};

int main()
{
   Application::Run( gcnew Form1 );
}

using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

public partial class Form1: Form
{
    internal RichTextBox RichTextBox1;
    internal Button Button1;
    internal RichTextBox RichTextBox2;
    internal Button Button2;
    internal SaveFileDialog SaveFileDialog1;

    public Form1() : base()
    {   
        this.RichTextBox1 = new RichTextBox();
        this.Button1 = new Button();
        this.RichTextBox2 = new RichTextBox();
        this.Button2 = new Button();
        this.SaveFileDialog1 = new SaveFileDialog();
        this.SuspendLayout();
        this.RichTextBox1.Location = new Point(24, 64);
        this.RichTextBox1.Name = "RichTextBox1";
        this.RichTextBox1.TabIndex = 0;
        this.RichTextBox1.Text = "Type something here.";
        this.Button1.Location = new Point(96, 16);
        this.Button1.Name = "Button1";
        this.Button1.Size = new Size(96, 24);
        this.Button1.TabIndex = 1;
        this.Button1.Text = "Save To Stream";
        this.Button1.Click += new EventHandler(Button1_Click);
        this.RichTextBox2.Location = new Point(152, 64);
        this.RichTextBox2.Name = "RichTextBox2";
        this.RichTextBox2.TabIndex = 3;
        this.RichTextBox2.Text = 
            "It will be added to the stream and appear here.";
        this.Button2.Location = new Point(104, 200);
        this.Button2.Name = "Button2";
        this.Button2.Size = new Size(88, 32);
        this.Button2.TabIndex = 4;
        this.Button2.Text = "Save Stream To File";
        this.Button2.Click += new EventHandler(Button2_Click);
        this.ClientSize = new Size(292, 266);
        this.Controls.Add(this.Button2);
        this.Controls.Add(this.RichTextBox2);
        this.Controls.Add(this.Button1);
        this.Controls.Add(this.RichTextBox1);
        this.Name = "Form1";
        this.Text = "Form1";
        this.ResumeLayout(false);
    }

    public static void Main()
    {
        Application.Run(new Form1());
    }

    // Declare a new memory stream.
    MemoryStream userInput = new MemoryStream();

    // Save the content of RichTextBox1 to the memory stream, 
    // appending a LineFeed character.  
    private void Button1_Click(Object sender, EventArgs e)
    {
        RichTextBox1.SaveFile(userInput, RichTextBoxStreamType.PlainText);
        userInput.WriteByte(13);

        // Display the entire contents of the stream,
        // by setting its position to 0, to RichTextBox2.
        userInput.Position = 0;
        RichTextBox2.LoadFile(userInput, RichTextBoxStreamType.PlainText);
    }

    // Shows the use of a SaveFileDialog to save a MemoryStream to a file.
    private void Button2_Click(Object sender, EventArgs e)
    {
        // Set the properties on SaveFileDialog1 so the user is 
        // prompted to create the file if it doesn't exist 
        // or overwrite the file if it does exist.
        SaveFileDialog1.CreatePrompt = true;
        SaveFileDialog1.OverwritePrompt = true;

        // Set the file name to myText.txt, set the type filter
        // to text files, and set the initial directory to the 
        // MyDocuments folder.
        SaveFileDialog1.FileName = "myText";
        // DefaultExt is only used when "All files" is selected from 
        // the filter box and no extension is specified by the user.
        SaveFileDialog1.DefaultExt = "txt";
        SaveFileDialog1.Filter = 
            "Text files (*.txt)|*.txt|All files (*.*)|*.*";
        SaveFileDialog1.InitialDirectory = 
            Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

        // Call ShowDialog and check for a return value of DialogResult.OK,
        // which indicates that the file was saved. 
        DialogResult result = SaveFileDialog1.ShowDialog();
        Stream fileStream;

        if (result == DialogResult.OK)
        {
            // Open the file, copy the contents of memoryStream to fileStream,
            // and close fileStream. Set the memoryStream.Position value to 0 
            // to copy the entire stream. 
            fileStream = SaveFileDialog1.OpenFile();
            userInput.Position = 0;
            userInput.WriteTo(fileStream);
            fileStream.Close();
        }
    }
}

Imports System.Drawing
Imports System.IO
Imports System.Windows.Forms

Partial Public Class Form1
    Inherits Form

    Friend WithEvents RichTextBox1 As RichTextBox
    Friend WithEvents Button1 As Button
    Friend WithEvents RichTextBox2 As RichTextBox
    Friend WithEvents Button2 As Button
    Friend WithEvents SaveFileDialog1 As SaveFileDialog

    Public Sub New()
        MyBase.New()
        Me.RichTextBox1 = New RichTextBox
        Me.Button1 = New Button
        Me.RichTextBox2 = New RichTextBox
        Me.Button2 = New Button
        Me.SaveFileDialog1 = New SaveFileDialog
        Me.SuspendLayout()
        Me.RichTextBox1.Location = New Point(24, 64)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.TabIndex = 0
        Me.RichTextBox1.Text = "Type something here."
        Me.Button1.Location = New Point(96, 16)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New Size(96, 24)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Save To Stream"
        Me.RichTextBox2.Location = New Point(152, 64)
        Me.RichTextBox2.Name = "RichTextBox2"
        Me.RichTextBox2.TabIndex = 3
        Me.RichTextBox2.Text = "It will be added to the stream and appear here."
        Me.Button2.Location = New Point(104, 200)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New Size(88, 32)
        Me.Button2.TabIndex = 4
        Me.Button2.Text = "Save Stream To File"
        Me.ClientSize = New Size(292, 266)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.RichTextBox2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.RichTextBox1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

    Public Shared Sub Main()
        Application.Run(New Form1)
    End Sub

    ' Declare a new memory stream.
    Dim userInput As New MemoryStream

    ' Save the content of RichTextBox1 to the memory stream, appending
    'a LineFeed character.  
    Private Sub Button1_Click(ByVal sender As Object, _
        ByVal e As EventArgs) Handles Button1.Click
        RichTextBox1.SaveFile(userInput, RichTextBoxStreamType.PlainText)
        userInput.WriteByte(13)

        ' Display the entire contents of the stream,
        ' by setting its position to 0, to RichTextBox2.
        userInput.Position = 0
        RichTextBox2.LoadFile(userInput, RichTextBoxStreamType.PlainText)
    End Sub

    ' Shows the use of a SaveFileDialog to save a MemoryStream to a file.
    Private Sub Button2_Click(ByVal sender As Object, _
        ByVal e As EventArgs) Handles Button2.Click

        ' Set the properties on SaveFileDialog1 so the user is 
        ' prompted to create the file if it doesn't exist 
        ' or overwrite the file if it does exist.
        SaveFileDialog1.CreatePrompt = True
        SaveFileDialog1.OverwritePrompt = True

        ' Set the file name to myText.txt, set the type filter
        ' to text files, and set the initial directory to the 
        ' MyDocuments folder.
        SaveFileDialog1.FileName = "myText"
        ' DefaultExt is only used when "All files" is selected from 
        ' the filter box and no extension is specified by the user.
        SaveFileDialog1.DefaultExt = "txt"
        SaveFileDialog1.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*"
        SaveFileDialog1.InitialDirectory = _
            Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)

        ' Call ShowDialog and check for a return value of DialogResult.OK,
        ' which indicates that the file was saved. 
        Dim result As DialogResult = SaveFileDialog1.ShowDialog()
        Dim fileStream As Stream

        If (result = DialogResult.OK) Then
            ' Open the file, copy the contents of memoryStream to fileStream,
            ' and close fileStream. Set the memoryStream.Position value to 0 to 
            ' copy the entire stream. 
            fileStream = SaveFileDialog1.OpenFile()
            userInput.Position = 0
            userInput.WriteTo(fileStream)
            fileStream.Close()
        End If
    End Sub

End Class

Poznámky

Tato verze SaveFile metody umožňuje uložit celý obsah ovládacího prvku do datového proudu, který je již otevřen. Datový proud pak může informace uložit do souboru. K načtení obsahu souboru do objektu LoadFile můžete použít metodu RichTextBox.

Tato verze SaveFile metody také umožňuje určit formát dat informací, které budou odeslány do objektu Stream .

Viz také

• Stream
• LoadFile(String)
• RichTextBoxStreamType

public:
 void SaveFile(System::String ^ path, System::Windows::Forms::RichTextBoxStreamType fileType);

public void SaveFile (string path, System.Windows.Forms.RichTextBoxStreamType fileType);

member this.SaveFile : string * System.Windows.Forms.RichTextBoxStreamType -> unit

Public Sub SaveFile (path As String, fileType As RichTextBoxStreamType)

Parametry

Výjimky

Příklady

Následující příklad kódu uloží obsah RichTextBox do textového souboru ASCII. V příkladu SaveFileDialog se třída používá k zobrazení dialogového okna s žádostí o cestu a název souboru od uživatele. Kód pak uloží obsah ovládacího prvku do tohoto souboru. Příklad používá tuto verzi SaveFile metody k určení, že soubor má být uložen jako textový soubor ASCII namísto standardního formátu RTF. Tento příklad vyžaduje, aby byl kód umístěn ve Form třídě, která má RichTextBox ovládací prvek s názvem richTextBox1.

public:
   void SaveMyFile()
   {
      // Create a SaveFileDialog to request a path and file name to save to.
      SaveFileDialog^ saveFile1 = gcnew SaveFileDialog;
      
      // Initialize the SaveFileDialog to specify the RTF extension for the file.
      saveFile1->DefaultExt = "*.rtf";
      saveFile1->Filter = "RTF Files|*.rtf";
      
      // Determine if the user selected a file name from the saveFileDialog.
      if ( saveFile1->ShowDialog() == System::Windows::Forms::DialogResult::OK &&
         saveFile1->FileName->Length > 0 )
      {
         // Save the contents of the RichTextBox into the file.
         richTextBox1->SaveFile( saveFile1->FileName, RichTextBoxStreamType::PlainText );
      }
   }

public void SaveMyFile()
{
   // Create a SaveFileDialog to request a path and file name to save to.
   SaveFileDialog saveFile1 = new SaveFileDialog();

   // Initialize the SaveFileDialog to specify the RTF extension for the file.
   saveFile1.DefaultExt = "*.rtf";
   saveFile1.Filter = "RTF Files|*.rtf";

   // Determine if the user selected a file name from the saveFileDialog.
   if(saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
      saveFile1.FileName.Length > 0) 
   {
      // Save the contents of the RichTextBox into the file.
      richTextBox1.SaveFile(saveFile1.FileName, RichTextBoxStreamType.PlainText);
   }
}

Public Sub SaveMyFile()
    ' Create a SaveFileDialog to request a path and file name to save to.
    Dim saveFile1 As New SaveFileDialog()
    
    ' Initialize the SaveFileDialog to specify the RTF extension for the file.
    saveFile1.DefaultExt = "*.rtf"
    saveFile1.Filter = "RTF Files|*.rtf"
    
    ' Determine if the user selected a file name from the saveFileDialog.
    If (saveFile1.ShowDialog() = System.Windows.Forms.DialogResult.OK) _
        And (saveFile1.FileName.Length) > 0 Then
    
        ' Save the contents of the RichTextBox into the file.
        richTextBox1.SaveFile(saveFile1.FileName, _
            RichTextBoxStreamType.PlainText)
    End If
End Sub

Poznámky

Metoda SaveFile umožňuje uložit celý obsah ovládacího prvku do souboru RTF, který mohou být použity v jiných aplikacích, například Microsoft Word a Windows WordPad. Pokud název souboru předaný parametru path již v zadaném adresáři existuje, soubor se bez předchozího upozornění přepíše. K načtení obsahu souboru do objektu LoadFile můžete použít metodu RichTextBox.

Tato verze SaveFile metody umožňuje určit typ souboru pro uložení obsahu ovládacího prvku do. Pomocí této funkce můžete zajistit, aby byl soubor uložen ve správném formátu na základě obsahu ovládacího prvku. Pokud například dokument neobsahuje žádné rozdíly ve stylu nebo obarvení písma, můžete soubor uložit jako textový soubor ASCII nastavením parametru fileType na RichTextBoxStreamType.PlainTexthodnotu .

Viz také

• LoadFile(String)
• RichTextBoxStreamType

public:
 void SaveFile(System::String ^ path);

public void SaveFile (string path);

member this.SaveFile : string -> unit

Public Sub SaveFile (path As String)

Parametry

Výjimky

Příklady

Následující příklad kódu uloží obsah RichTextBox ovládacího prvku do souboru RTF. V příkladu SaveFileDialog se třída používá k zobrazení dialogového okna pro požadavek od uživatele, cestu a název souboru k uložení. Kód pak soubor uloží za předpokladu, že je obsah ve formátu RTF. Pokud už soubor existuje, automaticky se přepíše. Tento příklad vyžaduje, aby byl kód umístěn ve Form třídě, která má RichTextBox ovládací prvek s názvem richTextBox1.

public:
   void SaveMyFile()
   {
      // Create a SaveFileDialog to request a path and file name to save to.
      SaveFileDialog^ saveFile1 = gcnew SaveFileDialog;
      
      // Initialize the SaveFileDialog to specify the RTF extention for the file.
      saveFile1->DefaultExt = "*.rtf";
      saveFile1->Filter = "RTF Files|*.rtf";
      
      // Determine whether the user selected a file name from the saveFileDialog.
      if ( saveFile1->ShowDialog() == System::Windows::Forms::DialogResult::OK &&
         saveFile1->FileName->Length > 0 )
      {
         // Save the contents of the RichTextBox into the file.
         richTextBox1->SaveFile( saveFile1->FileName );
      }
   }

public void SaveMyFile()
{
   // Create a SaveFileDialog to request a path and file name to save to.
   SaveFileDialog saveFile1 = new SaveFileDialog();

   // Initialize the SaveFileDialog to specify the RTF extention for the file.
   saveFile1.DefaultExt = "*.rtf";
   saveFile1.Filter = "RTF Files|*.rtf";

   // Determine whether the user selected a file name from the saveFileDialog.
   if(saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
      saveFile1.FileName.Length > 0) 
   {
      // Save the contents of the RichTextBox into the file.
      richTextBox1.SaveFile(saveFile1.FileName);
   }
}

Public Sub SaveMyFile()
    ' Create a SaveFileDialog to request a path and file name to save to.
    Dim saveFile1 As New SaveFileDialog()
    
    ' Initialize the SaveFileDialog to specify the RTF extention for the file.
    saveFile1.DefaultExt = "*.rtf"
    saveFile1.Filter = "RTF Files|*.rtf"
    
    ' Determine whether the user selected a file name from the saveFileDialog.
    If (saveFile1.ShowDialog() = System.Windows.Forms.DialogResult.OK) _
        And (saveFile1.FileName.Length > 0) Then
        
        ' Save the contents of the RichTextBox into the file.
        richTextBox1.SaveFile(saveFile1.FileName)
    End If
End Sub

Poznámky

Metoda SaveFile umožňuje uložit celý obsah ovládacího prvku do souboru RTF, který mohou být použity v jiných aplikacích, například Microsoft Word a Windows WordPad. Pokud název souboru předaný parametru path již v zadaném adresáři existuje, soubor se bez předchozího upozornění přepíše. K načtení obsahu souboru do objektu LoadFile můžete použít metodu RichTextBox.

Viz také

• LoadFile(String)