protected void Page_Load(object sender, System.EventArgs e)
{
// The first time in
if (Session.IsNewSession)
{
//******************************************************************************//
//* You need to follow below lines in your own application in order to *//
//* save state manually. *//
//* You don't need this state manager if the "MapInfo.Engine.Session.State" *//
//* in the web.config is not set to "Manual" *//
//******************************************************************************//
if(AppStateManager.IsManualState())
{
AppStateManager stateManager = new AppStateManager();
// tell the state manager which map alias you want to use.
// You could also add your own key/value pairs, the value should be serializable.
stateManager.ParamsDictionary[AppStateManager.ActiveMapAliasKey] = this.MapControl1.MapAlias;
// Add workingLayerName into State manager's ParamsDictionary.
stateManager.ParamsDictionary["WorkingLayerName"] = _workingLayerName;
// Put state manager into HttpSession, so we could get it later on.
AppStateManager.PutStateManagerInSession(stateManager);
}
InitWorkingLayer();
MapInfo.Mapping.Map myMap = MapInfo.Engine.Session.Current.MapFactory[this.MapControl1.MapAlias];
// Set the initial zoom, center and size of the map
// This step is needed because you may get a dirty map from mapinfo Session.Current which is retrived from session pool.
myMap.Zoom = new MapInfo.Geometry.Distance(25000, DistanceUnit.Mile);
myMap.Center = new DPoint(27775.805792979896,-147481.33999999985);
myMap.Size = new System.Drawing.Size((int)this.MapControl1.Width.Value, (int)this.MapControl1.Height.Value);
}
// Restore state.
if(MapInfo.WebControls.StateManager.IsManualState())
{
MapInfo.WebControls.StateManager.GetStateManagerFromSession().RestoreState();
}
}
private void Page_Load(object sender, System.EventArgs e)
{
// The first time in
if (Session.IsNewSession)
{
//******************************************************************************//
//* You need to follow below lines in your own application in order to *//
//* save state manually. *//
//* You don't need this state manager if the "MapInfo.Engine.Session.State" *//
//* in the web.config is not set to "Manual" *//
//******************************************************************************//
if (AppStateManager.IsManualState())
{
AppStateManager stateManager = new AppStateManager();
// tell the state manager which map alias you want to use.
// You could also add your own key/value pairs, the value should be serializable.
stateManager.ParamsDictionary[AppStateManager.ActiveMapAliasKey] = this.MapControl1.MapAlias;
// Add workingLayerName into State manager's ParamsDictionary.
stateManager.ParamsDictionary["WorkingLayerName"] = _workingLayerName;
// Put state manager into HttpSession, so we could get it later on.
AppStateManager.PutStateManagerInSession(stateManager);
}
InitWorkingLayer();
MapInfo.Mapping.Map myMap = MapInfo.Engine.Session.Current.MapFactory[this.MapControl1.MapAlias];
// Set the initial zoom, center and size of the map
// This step is needed because you may get a dirty map from mapinfo Session.Current which is retrived from session pool.
myMap.Zoom = new MapInfo.Geometry.Distance(25000, DistanceUnit.Mile);
myMap.Center = new DPoint(27775.805792979896, -147481.33999999985);
myMap.Size = new System.Drawing.Size((int)this.MapControl1.Width.Value, (int)this.MapControl1.Height.Value);
}
// Restore state.
if (MapInfo.WebControls.StateManager.IsManualState())
{
MapInfo.WebControls.StateManager.GetStateManagerFromSession().RestoreState();
}
}
// Save the state
public override void SaveState()
{
string mapAlias = this.ParamsDictionary[AppStateManager.ActiveMapAliasKey] as String;
MapInfo.Mapping.Map myMap = GetMapObj(mapAlias);
if (myMap == null)
{
return;
}
// Note: for performance reasons, only save the map's center and zoom.
AppStateManager.SaveZoomCenterState(myMap);
// Get the workingLayerName saved in WebForm1.aspx page_load.
string workingLayerName = this.ParamsDictionary["WorkingLayerName"] as String;
// Save the map's Working table and layer
MapInfo.Mapping.FeatureLayer workingLayer = (MapInfo.Mapping.FeatureLayer)myMap.Layers[workingLayerName];
MapInfo.Data.Table workingTable = workingLayer != null ? workingLayer.Table : null;
ManualSerializer.SaveMapXtremeObjectIntoHttpSession(workingTable, "WorkingTable");
ManualSerializer.SaveMapXtremeObjectIntoHttpSession(workingLayer, "WorkingLayer");
}
// Restore the state
public override void RestoreState()
{
string mapAlias = ParamsDictionary[ActiveMapAliasKey] as string;
Map myMap = GetMapObj(mapAlias);
// If it was user's first time and the session was not dirty then save this default state to be applied later.
// If it was a users's first time and the session was dirty then apply the default state saved in above step to give users a initial state.
if (IsUsersFirstTime())
{
if (IsDirtyMapXtremeSession())
{
RestoreDefaultState(myMap);
}
else
{
SaveDefaultState(myMap);
}
}
else
{
if (myMap == null)
{
return;
}
// Restore everything we saved explictly.
AppStateManager.RestoreZoomCenterState(myMap);
ManualSerializer.RestoreMapXtremeObjectFromHttpSession("WorkingTable");
ManualSerializer.RestoreMapXtremeObjectFromHttpSession("WorkingLayer");
// Get the workingLayerName saved in WebForm1.aspx page_load.
string workingLayerName = this.ParamsDictionary["WorkingLayerName"] as String;
int indexOfLayer = myMap.Layers.IndexOf(myMap.Layers[workingLayerName]);
// Move the working layer to the Top, so it can be displayed.
myMap.Layers.Move(indexOfLayer, 0);
}
}