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HtmlInputFile.Size Property

Gets or sets the width of the text box in which the file path is entered.

Namespace:  System.Web.UI.HtmlControls
Assembly:  System.Web (in System.Web.dll)

public int Size { get; set; }
<asp:HtmlInputFile Size="Int32" />

Property Value

Type: System.Int32
The width of the file-path text box. The default value is -1, which indicates that the property has not been set.

Use this property to specify the width of the text box in which to enter the file path.

The following code example demonstrates how to use the Size property to specify the width of the text box in which the user enters the file path. For this example to work properly, you need to create a directory called Temp on your computer's drive C.

<%@ 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>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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