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HtmlInputFile.PostedFile Propriedade

  • Referência

Definição

Namespace:
System.Web.UI.HtmlControls
Assembly:
System.Web.dll

Obtém acesso ao arquivo carregado especificado por um cliente.

public:
 property System::Web::HttpPostedFile ^ PostedFile { System::Web::HttpPostedFile ^ get(); };
public System.Web.HttpPostedFile PostedFile { get; }
member this.PostedFile : System.Web.HttpPostedFile
Public ReadOnly Property PostedFile As HttpPostedFile

Valor da propriedade

HttpPostedFile

Um HttpPostedFile que acessa o arquivo a ser carregado.

Exemplos

O exemplo de código a seguir demonstra como usar a PostedFile propriedade para iniciar o utilitário que transfere o arquivo para o servidor. Observe que, se o tamanho do arquivo carregado em bytes exceder o valor da ContentLength propriedade , o arquivo não será carregado. Para que este exemplo funcione corretamente, você precisa criar um diretório chamado Temp na unidade C do computador.

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Button1_Click(object Source, EventArgs e)
  {

    // Make sure a file was submitted.
    if (Text1.Value == "")
    {
      
      Span1.InnerHtml = "Error: You must enter a file name.";
      return;
      
    }

    // Save the file.
    if (File1.PostedFile.ContentLength > 0)
    {
      try
      {
        
        File1.PostedFile.SaveAs("c:\\temp\\" + Text1.Value);
        Span1.InnerHtml = "File uploaded successfully to <b>c:\\temp\\" +
                           Text1.Value + "</b> on the Web server.";
        
      }
      catch (Exception exc)
      {
        
        Span1.InnerHtml = "Error saving file <b>c:\\temp\\" +
                           Text1.Value + "</b><br />" + exc.ToString() + ".";
        
      }
      
    }
    
  }
 
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>HtmlInputFile Example</title>
  </head>
 
  <body>
 
    <h3>HtmlInputFile Example</h3>
 
    <form id="form1" enctype="multipart/form-data" 
          runat="server">
 
       Select File to Upload: 
       <input id="File1" 
              type="file"
              runat="server"/>
 
       <p>
       Save as file name (no path): 
       <input id="Text1" 
              type="text" 
              runat="server"/>
 
       </p>
       <p>
       <span id="Span1" 
             style="font: 8pt verdana;" 
             runat="server" />
 
       </p>
       <p>
       <input type="button" 
              id="Button1" 
              value="Upload" 
              onserverclick="Button1_Click" 
              runat="server" />

       </p>

    </form>
 
  </body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Button1_Click(ByVal Source As Object, ByVal e As EventArgs)
        
    ' Make sure a file was submitted.
    If Text1.Value = "" Then
      
      Span1.InnerHtml = "Error: You must enter a file name."
      Return
      
    End If
        
    ' Save the file.
    If File1.PostedFile.ContentLength > 0 Then
      Try
        
        File1.PostedFile.SaveAs(("c:\temp\" & Text1.Value))
        Span1.InnerHtml = "File uploaded successfully to <b>c:\temp\" & _
                           Text1.Value & "</b> on the Web server."
        
      Catch exc As Exception
        
        Span1.InnerHtml = "Error saving file <b>c:\temp\" & _
                           Text1.Value & "</b><br />" & exc.ToString() + "."
        
      End Try
      
    End If
    
  End Sub
 
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>HtmlInputFile Example</title>
  </head>
 
  <body>
 
    <h3>HtmlInputFile Example</h3>
 
    <form id="form1" enctype="multipart/form-data" 
          runat="server">
 
       Select File to Upload: 
       <input id="File1" 
              type="file"
              runat="server"/>
 
       <p>
       Save as file name (no path): 
       <input id="Text1" 
              type="text" 
              runat="server"/>
 
       </p>
       <p>
       <span id="Span1" 
             style="font: 8pt verdana;" 
             runat="server" />
 
       </p>
       <p>
       <input type="button" 
              id="Button1" 
              value="Upload" 
              onserverclick="Button1_Click" 
              runat="server" />

       </p>

    </form>
 
  </body>
</html>

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