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HtmlInputFile.Size Proprietà

Definizione

Ottiene o imposta la larghezza della casella di testo in cui inserire il percorso del file.

public:
 property int Size { int get(); void set(int value); };
public int Size { get; set; }
member this.Size : int with get, set
Public Property Size As Integer

Valore della proprietà

Int32

Larghezza della casella di testo per il percorso del file. Il valore predefinito -1 indica che la proprietà non è stata impostata.

Esempio

Nell'esempio di codice seguente viene illustrato come usare la Size proprietà per specificare la larghezza della casella di testo in cui l'utente immette il percorso del file. Per il corretto funzionamento di questo esempio, è necessario creare una directory chiamata Temp nell'unità C del computer.

<%@ 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 != null)
    {
      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"
              size="15"
              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 Not (File1.PostedFile Is Nothing) 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"
              size="15"
              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>

Commenti

Utilizzare questa proprietà per specificare la larghezza della casella di testo in cui immettere il percorso del file.

Si applica a