Bagikan melalui

HtmlInputFile.Value Properti

Definisi

Ruang nama:
System.Web.UI.HtmlControls
Rakitan:
System.Web.dll

Mendapatkan jalur lengkap file di komputer klien.

public:
 virtual property System::String ^ Value { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.Browsable(false)]
public override string Value { get; set; }
[<System.ComponentModel.Browsable(false)>]
member this.Value : string with get, set
Public Overrides Property Value As String

Nilai Properti

String

Jalur lengkap file klien.

Atribut
BrowsableAttribute

Pengecualian

NotSupportedException

Upaya dilakukan untuk menetapkan nilai ke properti ini.

Contoh

Contoh kode berikut menunjukkan cara menggunakan Value properti untuk menampilkan jalur lengkap file di komputer klien. Agar contoh ini berfungsi dengan baik, Anda perlu membuat direktori yang dipanggil Temp di drive C komputer Anda.

<%@ 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 = "<b>" + File1.Value + "</b>" +
                          " 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">

  Public 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 = "<b>" & File1.Value & "</b>" & _
                          " 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>

Keterangan

Properti Value mengambil jalur lengkap file di komputer klien (misalnya "C:\MyFiles\Test.txt"). Ini berguna ketika Anda perlu tahu di mana file disimpan di komputer yang mengirimkan file. Properti ini juga umumnya digunakan untuk menentukan nama file asli. Untuk mendapatkan nama file asli, uraikan nilai properti ini.

Nota

Properti Value bersifat baca-saja. Jika Anda mencoba menetapkan nilai ke properti ini, akan System.NotSupportedException dilemparkan.

Berlaku untuk

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