Asp.net C# Windows Forms Upload Image

ImageUpload

// logoUpload is the name of the .net upload control.

string sSavePath = "/images/";

if (logoUpload.PostedFile != null)
{
    HttpPostedFile myLogo = logoUpload.PostedFile;

    //Check Length.
    int nFileLen = myLogo.ContentLength;
    if (nFileLen == 0)
    {
        lblOutput.Text = "No file was uploaded.";
        return;
    }

    //Check file extension/type.
    if (System.IO.Path.GetExtension(myLogo.FileName).ToLower() != ".png")
    {
        lblOutput.Text = "Please make sure your logo is a PNG.";
        return;
    }

    //Read file into a stream.
    byte[] myLogoData = new Byte[nFileLen];
    myLogo.InputStream.Read(myLogoData, 0, nFileLen);

    //Get file name.
    string sFileName = System.IO.Path.GetFileName(myLogo.FileName);

    //Save new image to disk.
    FileStream newFile = new FileStream(Server.MapPath(sSavePath + sFileName), FileMode.Create);
    newFile.Write(myLogoData, 0, myLogoData.Length);
    newFile.Close();
}