FileUpload.FileContent 속성

참조

정의

네임스페이스:: System.Web.UI.WebControls

어셈블리:: System.Web.dll

중요

일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.

Stream 컨트롤을 사용하여 업로드할 파일을 가리키는 FileUpload 개체를 가져옵니다.

public:
 property System::IO::Stream ^ FileContent { System::IO::Stream ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.IO.Stream FileContent { get; }

[<System.ComponentModel.Browsable(false)>]
member this.FileContent : System.IO.Stream

Public ReadOnly Property FileContent As Stream

속성 값

Stream

FileUpload를 사용하여 업로드할 파일을 가리키는 Stream입니다.

특성: BrowsableAttribute

예제

다음 예제에서는 만드는 방법을 보여 줍니다는 FileUpload 제어 합니다. FileContent 속성 파일의 내용을 바이트 배열로 읽을을 사용 합니다. 클릭할 때 합니다 파일 업로드 단추는 파일 내용의 바이트 페이지의 텍스트 상자에 표시 됩니다.

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

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

<script runat="server">

    protected void UploadButton_Click(object sender, EventArgs e)
    {
        // Specify the path on the server to
        // save the uploaded file to.
        String savePath = @"c:\temp\uploads\";

        // Before attempting to perform operations
        // on the file, verify that the FileUpload 
        // control contains a file.
        if (FileUpload1.HasFile)
        {
            // Append the name of the file to upload to the path.
            savePath += FileUpload1.FileName;
            
            // Call the SaveAs method to save the 
            // uploaded file to the specified path.
            // This example does not perform all
            // the necessary error checking.               
            // If a file with the same name
            // already exists in the specified path,  
            // the uploaded file overwrites it.
            FileUpload1.SaveAs(savePath);
                
            // Notify the user that the file was uploaded successfully.
            UploadStatusLabel.Text = "Your file was uploaded successfully.";
                
            // Call a helper routine to display the contents
            // of the file to upload.
            DisplayFileContents(FileUpload1.PostedFile);
        }
        else
        {
            // Notify the user that a file was not uploaded.
            UploadStatusLabel.Text = "You did not specify a file to upload.";
        }
    }
    void DisplayFileContents(HttpPostedFile file)
    {
        System.IO.Stream myStream;
        Int32 fileLen;
        StringBuilder displayString = new StringBuilder();
     
        // Get the length of the file.
        fileLen = FileUpload1.PostedFile.ContentLength;
            
        // Display the length of the file in a label.
        LengthLabel.Text = "The length of the file is " + 
                           fileLen.ToString() + " bytes.";
   
        // Create a byte array to hold the contents of the file.
        Byte[] Input = new Byte[fileLen];
            
        // Initialize the stream to read the uploaded file.
        myStream = FileUpload1.FileContent;
            
        // Read the file into the byte array.
        myStream.Read(Input, 0, fileLen);
        
        // Copy the byte array to a string.
        for (int loop1 = 0; loop1 < fileLen; loop1++)
        {
            displayString.Append(Input[loop1].ToString());
        }

        // Display the contents of the file in a 
        // textbox on the page.
        ContentsLabel.Text = "The contents of the file as bytes:";

        TextBox ContentsTextBox = new TextBox();
        ContentsTextBox.TextMode = TextBoxMode.MultiLine;
        ContentsTextBox.Height = Unit.Pixel(300);
        ContentsTextBox.Width = Unit.Pixel(400);
        ContentsTextBox.Text = displayString.ToString();

        // Add the textbox to the Controls collection
        // of the Placeholder control.
        PlaceHolder1.Controls.Add(ContentsTextBox);

    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>FileUpload.FileContent Property Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h4>Select a file to upload:</h4>
       
        <asp:FileUpload id="FileUpload1"
           runat="server">
        </asp:FileUpload>
       
        <br /><br />
       
        <asp:Button id="UploadButton" 
            Text="Upload file"
            OnClick="UploadButton_Click"
            runat="server">
        </asp:Button>
        
        <br /><br />
        
        <asp:Label id="UploadStatusLabel"
           runat="server">
        </asp:Label>  
            
        <hr />
        
        <asp:Label id="LengthLabel"
           runat="server">
        </asp:Label>  
        
        <br /><br />
       
        <asp:Label id="ContentsLabel"
           runat="server">
        </asp:Label>  
        
        <br /><br />
       
        <asp:PlaceHolder id="PlaceHolder1"
            runat="server">
        </asp:PlaceHolder>        
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" %>

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

<script runat="server">
    Sub UploadButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        ' Specify the path on the server to
        ' save the uploaded file to.
        Dim savePath As String = "c:\temp\uploads\"
            
        ' Before attempting to perform operations
        ' on the file, verify that the FileUpload 
        ' control contains a file.
        If (FileUpload1.HasFile) Then
            
            ' Append the name of the file to upload to the path.
            savePath += FileUpload1.FileName
            
            ' Call the SaveAs method to save the 
            ' uploaded file to the specified path.
            ' This example does not perform all
            ' the necessary error checking.               
            ' If a file with the same name
            ' already exists in the specified path,  
            ' the uploaded file overwrites it.
            FileUpload1.SaveAs(savePath)
                
            ' Notify the user that the file was uploaded successfully.
            UploadStatusLabel.Text = "Your file was uploaded successfully."
                
            ' Call a helper routine to display the contents
            ' of the file to upload.
            DisplayFileContents(FileUpload1.PostedFile)
        Else
            ' Notify the user that a file was not uploaded.
            UploadStatusLabel.Text = "You did not specify a file to upload."
        End If

    End Sub

    Sub DisplayFileContents(ByVal file As HttpPostedFile)
            
        Dim myStream As System.IO.Stream
        Dim fileLen As Integer
        Dim displayString As New StringBuilder()
        Dim loop1 As Integer
            
        ' Get the length of the file.
        fileLen = FileUpload1.PostedFile.ContentLength
            
        ' Display the length of the file in a label.
        LengthLabel.Text = "The length of the file is " _
                           + fileLen.ToString + " bytes."
            
        ' Create a byte array to hold the contents of the file.
        Dim Input(fileLen) As Byte
            
        ' Initialize the stream to read the uploaded file.
        myStream = FileUpload1.FileContent
            
        ' Read the file into the byte array.
        myStream.Read(Input, 0, fileLen)
            
        ' Copy the byte array to a string.
        For loop1 = 0 To fileLen - 1
            displayString.Append(Input(loop1).ToString())
        Next loop1
            
        ' Display the contents of the file in a 
        ' textbox on the page.
        ContentsLabel.Text = "The contents of the file as bytes:"
            
        Dim ContentsTextBox As New TextBox
        ContentsTextBox.TextMode = TextBoxMode.MultiLine
        ContentsTextBox.Height = Unit.Pixel(300)
        ContentsTextBox.Width = Unit.Pixel(400)
        ContentsTextBox.Text = displayString.ToString()
            
        ' Add the textbox to the Controls collection
        ' of the Placeholder control.
        PlaceHolder1.Controls.Add(ContentsTextBox)

    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>FileUpload.FileContent Property Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h4>Select a file to upload:</h4>
       
        <asp:FileUpload id="FileUpload1"
           runat="server">
        </asp:FileUpload>
       
        <br /><br />
       
        <asp:Button id="UploadButton" 
            Text="Upload file"
            OnClick="UploadButton_Click"
            runat="server">
        </asp:Button>
        
        <br /><br />
        
        <asp:Label id="UploadStatusLabel"
           runat="server">
        </asp:Label>  
            
        <hr />
        
        <asp:Label id="LengthLabel"
           runat="server">
        </asp:Label>  
        
        <br /><br />
       
        <asp:Label id="ContentsLabel"
           runat="server">
        </asp:Label>  
        
        <br /><br />
       
        <asp:PlaceHolder id="PlaceHolder1"
            runat="server">
        </asp:PlaceHolder>        
    </div>
    </form>
</body>
</html>

설명

FileContent 속성을 Stream 를 사용 하 여 업로드할 파일을 가리키는 개체를 FileUpload 컨트롤입니다. 사용 된 FileContent 파일의 내용에 액세스 하는 속성입니다. 예를 들어 사용할 수 있습니다는 Stream 바이트로 파일의 내용을 읽고 바이트 배열에 저장 하려면이 속성에서 반환 되는 개체입니다.

적용 대상

다음을 통해 공유

FileUpload.FileContent 속성

정의

속성 값

예제

설명

적용 대상

추가 정보

추가 리소스