iterative all documents in visual studio 2015

[Bouki6]

Hello. i just start using the Macros. i simply want to go through all the documents in the solution and then run this command: dte.ExecuteCommand("Edit.CollapsetoDefinitions");

so i used your one of the sample macros "removes and sorts all". but the problem is command execute before the document completely load. if there was a event or timer that can help wait until document load completely the problem will solve. here is my macro:

iterateFiles();

function iterateFiles() {
    for (var i = 1; i <= dte.Solution.Projects.Count; i++) {
        iterateProjectFiles(dte.Solution.Projects.Item(i).ProjectItems);
    }
}

function iterateProjectFiles(projectItems) {
    for (var i = 1; i <= projectItems.Count; i++) {
        var file = projectItems.Item(i);

        if (file.SubProject != null) {
            formatFile(file);
            iterateProjectFiles(file.ProjectItems);
        } else if (file.ProjectItems != null && file.ProjectItems.Count > 0) {
            formatFile(file);
            iterateProjectFiles(file.ProjectItems);
        } else {
            formatFile(file);
        }
    }
}

function formatFile(file) {
    dte.ExecuteCommand("View.SolutionExplorer");
    if (file.Name.indexOf(".cs", file.Name.length - ".cs".length) !== -1) {
        file.Open();
        file.Document.Activate();

         //here we must wait until document completely load 
        // Format the document
        dte.ExecuteCommand("Edit.CollapsetoDefinitions");

        file.Document.Save();
        file.Document.Close();
    }
}