file upload

CSharp kode 

 protected void Button2_Click(object sender, EventArgs e)
 {
     string sSavePath;
 
         sSavePath = "../admin";
 
         if (FileUpload.PostedFile != null)
         {
             if (FileUpload.PostedFile.ContentLength == 0)
             {
                 lblOutput_excel.Text = "No file was uploaded.";
                 return;
             }
             
 
             if (System.IO.Path.GetExtension(FileUpload.PostedFile.FileName).ToLower() != ".xls")
             {
                 lblOutput.Text = "The file must have an extension of xls";
                 return;
 
             }
            
             byte[] myData = GetFileBits(FileUpload.PostedFile.InputStream, FileUpload.PostedFile.ContentLength);
 
             System.IO.FileStream newFile
                         = new System.IO.FileStream(Server.MapPath(sSavePath),
                                                    System.IO.FileMode.Create);
             newFile.Write(myData, 0, myData.Length);
             newFile.Close();
         }
 }
 
 private byte[] GetFileBits(Stream fs, int size)
 {
         fs.Position = 0;
         byte[] fileByteArr = new byte[size];
         int val = fs.Read(fileByteArr, 0, size);
         return fileByteArr;
 }

HTML kode 

 <div>
     <h4>Select a file to upload:</h4>
 
         <asp:FileUpload id="FileUpload1"                 
             runat="server">
         </asp:FileUpload>
 
         <br/><br/>
 
         <asp:Button id="UploadBtn" 
             Text="Upload file"
             OnClick="UploadBtn_Click"
             runat="server">
         </asp:Button>    
 
         <hr />
 
         <asp:Label id="UploadStatusLabel"
             runat="server">
         </asp:Label>     
 
     </div>

CSharp kode 

 // Specify the path on the server to
         // save the uploaded file to.
         string savePath = @"c:\test\";
 
         // Before attempting to save the file, verify
         // that the FileUpload control contains a file.
         if (FileUpload1.HasFile)
         {
             // Get the name of the file to upload.
             string fileName = Server.HtmlEncode(FileUpload1.FileName);
 
             // Get the extension of the uploaded file.
             string extension = System.IO.Path.GetExtension(fileName);
 
             // Allow only files with .doc or .xls extensions
             // to be uploaded.
             if ((extension == ".doc") || (extension == ".xls"))
             {
                 // Append the name of the file to upload to the path.
                 savePath += 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 their file was successfully uploaded.
                 UploadStatusLabel.Text = "Your file was uploaded successfully.";
             }
             else
             {
                 // Notify the user why their file was not uploaded.
                 UploadStatusLabel.Text = "Your file was not uploaded because " +
                                          "it does not have a .doc or .xls extension.";
             }
         }

Kode 

if (FileUpload1.HasFile)
        {
            FileUpload1.PostedFile.SaveAs(Server.MapPath(FileUpload1.PostedFile.FileName));
        }

Kode 

sSavePath = "../admin/test.xls";

Kode 

sSavePath = "../admin/