title: file name not displaying in the Entry line in xamarin.forms
body: <p>I am working on a <code>Xamarin.Forms</code> app. I need to browse and open files from the folder and when i tried to do so and selected the file, the file path is not displayed in the entry line. Here is my code please let me know what should be changed?</p>
  
  <pre><code>public string FileName
  {
      get { return fileName; }
      set
      {
          fileName = value;
          PropertyChanged(this, new PropertyChangedEventArgs("csv_file"));
      }
  }
  
  private Plugin.FilePicker.Abstractions.FileData file = default(Plugin.FilePicker.Abstractions.FileData);
  
  public async void OnBrowse(object o, EventArgs args)
  {
      this.file = await CrossFilePicker.Current.PickFile();
      if (this.file == null)
      {
          return;
      }
  
      string extensionType = this.file.FileName.Substring(this.file.FileName.LastIndexOf(".", StringComparison.Ordinal) 
          + 1, this.file.FileName.Length - this.file.FileName.LastIndexOf(".", StringComparison.Ordinal) - 1).ToLower();
  
      if (extensionType.Equals("csv"))
      {
          csv_file.SetValue((BindableProperty.Create("csv_file", typeof(string), typeof(Entry), null, BindingMode.TwoWay, null)), fileName);
      }
      else
      {
          await this.DisplayAlert("Name of the file:" + file.FileName + " and path too file: " + file.FilePath, "File info", "OK");
      }
  }
  </code></pre>
  
  <p>Here is the xaml code </p>
  
  <pre><code>         &lt;StackLayout Orientation="Horizontal" 
                   HorizontalOptions="FillAndExpand"&gt;
              &lt;Entry x:Name="csv_file" Placeholder="" WidthRequest="150"&gt;
              &lt;/Entry&gt;
              &lt;Button BackgroundColor="Gray" TextColor="Black" 
               WidthRequest="40" Text="...." Clicked="OnBrowse"/&gt;
          &lt;/StackLayout&gt;
  </code></pre>