private void CloseExistingSession()
{
if (this.splitContainer1.Panel2.Controls.Count > 0)
{
this.splitContainer1.Panel2.Controls.RemoveAt(0);
}
if (_miniDumpFile != null)
{
_miniDumpFile.Dispose();
}
this.treeView1.Nodes[0].Text = "<No minidump loaded>";
}