/// <summary>
/// Reads an OGAMA slideshow file.
/// </summary>
/// <param name="filePath">Path to slideshow file.</param>
/// <returns><strong>True</strong> if successful,
/// otherwise <strong>false</strong>.</returns>
private DialogResult OpenSlideshowFromFile(string filePath)
{
try
{
Slideshow newSlideshow = null;
using (FileStream fs = new FileStream(filePath, FileMode.Open))
{
// Create an instance of the XmlSerializer class;
// specify the type of object to be deserialized
XmlSerializer serializer = new XmlSerializer(typeof(Slideshow));
/* Use the Deserialize method to restore the object's state with
* data from the XML document. */
newSlideshow = (Slideshow)serializer.Deserialize(fs);
newSlideshow.SetModifiedToAllSlides();
}
if (this.trvSlideshow.Nodes[0].Nodes.Count > 0)
{
string message = "Do you want to delete the existing slideshow items" +
"before importing ?" + Environment.NewLine +
"Otherwise the imported slides will be inserted at the current selected node.";
DialogResult result =
InformationDialog.Show("Delete existing slideshow ?", message, true, MessageBoxIcon.Information);
switch (result)
{
case DialogResult.Cancel:
return(DialogResult.Cancel);
case DialogResult.No:
newSlideshow.SetNewNodeIDs(this.slideshow.GetUnusedNodeID());
if (this.trvSlideshow.SelectedNodes.Count > 0)
{
this.trvSlideshow.SelectedNodes[0].Nodes.Add(newSlideshow);
}
else
{
this.trvSlideshow.Nodes[0].Nodes.Add(newSlideshow);
}
break;
case DialogResult.Yes:
this.trvSlideshow.Nodes[0].Nodes.Clear();
this.lsvDetails.ClearObjects();
this.slideshow = newSlideshow;
this.PopulateTreeView(this.slideshow);
break;
}
}
else
{
this.slideshow = newSlideshow;
this.PopulateTreeView(this.slideshow);
}
this.SlideShowModified();
return(DialogResult.OK);
}
catch (Exception ex)
{
ExceptionMethods.HandleException(ex);
return(DialogResult.Abort);
}
}
