Cannot 'Undo' after edits made

BrianBulla

I have some code where I edit fields using a Chained EditOperation, but they do no show up in the Undo stack.  Here is the main logic behind what I am doing:

var editOperation = new ArcGIS.Desktop.Editing.EditOperation();
editOperation.Name = "Create new Facility IDs";

 

< start the looping>

var featureEdit = new ArcGIS.Desktop.Editing.EditOperation();
featureEdit = editOperation.CreateChainedOperation();

 

<code to make edits>

 

featureEdit.Modify(insp);
featureEdit.Execute();

<end the loop>  //continue until all selected features are edited

 

editOperation.Modify(insp);  //Without this line, nothing shows in the Undo stack....but even with it, nothing                                                            actually gets Undone after I press Undo

editOperation.Execute();

I want the user to be able to Undo ALL of the edits, not just one at a time.

Any ideas as to where I am going wrong??

Thanks,

BrianBulla

Hi Sean,

Thanks for posting that.  I have finally figured out what is going on.

Apparently you need to do a Modify/Edit on your initial EditOperation in order for the ChainedOperation to register with the Undo Stack.  Or at least, that is the only way I can get it to work.

It seems a bit counter-intuitive though.  In my case, I am doing ALL of my editing in a loop.  In your sample, you do an edit before your loop begins.  I would think that in most 'real-world' examples if you were creating a loop to do some editing you wouldn't think you need to do that first edit in order to 'set-up' the rest of the edits.

Anyways, that's just my 2 cents.  Perhaps the documentation needs to be updated to better explain how this functionality works.

Doing this, seems to get around that initial edit issue:

//initial editop
var op = new EditOperation();
op.Name = "ChainedLoop";

//this basically edits nothing, but sets things up so you can use a chainedEdit

var insp = new Inspector();
insp.Load(lyr, 1);
op.Modify(insp);
op.Execute();

Thanks for your help!