TOC Sample on/off layer

[francescodi_vito]

Hy guys,
i saw the TOC Sample that i download. When i run the project all layer are ON.
If i would like that all layer are OFF when i open the project?
What is the parameter to be changed?
Help please
Thanks

[WadeLobb]

Turn all layers off (right click the data frame (often called layers) and turn all layers off)
Save the file (mxd)
next time you open the document all the layers will be off

[DiveshGoyal]

if you want all layers to be off by default, you can listen for the AGSLayerDidLoadNotification and then set the layer's visible property to NO

[francescodi_vito]

thanks, but i don't found this method in toc.m
is there any example to see?
thanks