private void OpenWorldWorkSpace()
{
if (map != null)
{
map.CloseWindow();
this.CloseAllTables();
}
this.mapPanel.SetAsNextDocumentParent(NextDocumentEnum.WIN_STYLE_CHILD);
// Open the workspace that contains the world table.
worldworkspace = WorldWorkspace.Open();
this.TabInfoGrid.SelectedObject = worldworkspace.WorldTable;
// Get the front map window.
map = MapWindow.GetFrontWindow();
this.comboBoxMapTool.Enabled = true;
this.comboBox1.Enabled = true;
this.buttonZoomIn.Enabled = true;
this.buttonZoomOut.Enabled = true;
}