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How to save and load a layout file to preserve ButtonBar control settings. Using a layout file you could be able to preserve even the changes to the layout made by the user.


The steps followed to create this project are:


1) Create a new Visual Basic or C# project using "Windows Application" Template.


2) Add a ButtonBar control to Form1.


3) Add a button and change its Text property to "Load".


4) In the Click event of the load button, load the layout from a file calling a procedure similar to
the following:


In VB:

   Private Sub LoadLayout()
       Dim LayoutDir As String = GetLayoutDirectory() + "\ButtonBarLayout.bbl"
       Dim LayoutStream As FileStream
       LayoutStream = New FileStream(LayoutDir, FileMode.Open)
       ButtonBar1.LoadLayoutFile(LayoutStream)
       LayoutStream.Close()
   End Sub

In C#:

   private void LoadLayout()
   {
       string layoutDir = GetLayoutDirectory() + @"\ButtonBarLayout.bbl";
       FileStream layoutStream;
       layoutStream = new FileStream(layoutDir, FileMode.Open);
       buttonBar1.LoadLayoutFile(layoutStream);
       layoutStream.Close();
   }

5) Add a button and change its Text property to "Save"


6) In the Click event of the save button, save the layout from to file calling a procedure similar to
the following:


In VB:

   Private Sub SaveLayout()
       Dim LayoutDir As String = GetLayoutDirectory() + "\ButtonBarLayout.bbl"
       Dim LayoutStream As FileStream
       LayoutStream = New FileStream(LayoutDir, FileMode.Create)
       ButtonBar1.SaveLayoutFile(LayoutStream)
       LayoutStream.Close()
   End Sub

In C#:

   private void SaveLayout()
   {
       string layoutDir = GetLayoutDirectory() + @"\ButtonBarLayout.bbl";
       FileStream layoutStream;
       layoutStream = new FileStream(layoutDir, FileMode.Create);
       buttonBar1.SaveLayoutFile(layoutStream);
       layoutStream.Close();
   }

You can also save a layout by calling the Update method of the Layout.


In VB:

       If Not ButtonBar1.CurrentLayout Is Nothing Then
           ButtonBar1.CurrentLayout.Update()
       End If

In C#:

       if(buttonBar1.CurrentLayout!=null)
       {
           buttonBar1.CurrentLayout.Update();
       }

7) Run the project.

Source Of Information : Janus v3.5 Help Files for VS 2008