Microsoft.VisualStudio.Project.ProjectNode.QueryEditProjectFile C# (CSharp) Method

        internal bool QueryEditProjectFile(bool suppressUI)
        {
            bool result = true;
            if (this.site == null)
            {
                // We're already zombied. Better return FALSE.
                result = false;
            }
            else if (this.disableQueryEdit)
            {
                return true;
            }
            else
            {
                IVsQueryEditQuerySave2 queryEditQuerySave = this.GetService(typeof(SVsQueryEditQuerySave)) as IVsQueryEditQuerySave2;
                if (queryEditQuerySave != null)
                {   // Project path dependends on server/client project
                    string path = this.filename;

                    tagVSQueryEditFlags qef = tagVSQueryEditFlags.QEF_AllowInMemoryEdits;
                    if (suppressUI)
                        qef |= tagVSQueryEditFlags.QEF_SilentMode;

                    // If we are debugging, we want to prevent our project from being reloaded. To
                    // do this, we pass the QEF_NoReload flag
                    if (!Utilities.IsVisualStudioInDesignMode(this.Site))
                        qef |= tagVSQueryEditFlags.QEF_NoReload;

                    uint verdict;
                    uint moreInfo;
                    string[] files = new string[1];
                    files[0] = path;
                    uint[] flags = new uint[1];
                    VSQEQS_FILE_ATTRIBUTE_DATA[] attributes = new VSQEQS_FILE_ATTRIBUTE_DATA[1];
                    int hr = queryEditQuerySave.QueryEditFiles(
                                                    (uint)qef,
                                                    1, // 1 file
                                                    files, // array of files
                                                    flags, // no per file flags
                                                    attributes, // no per file file attributes
                                                    out verdict,
                                                    out moreInfo /* ignore additional results */);

                    tagVSQueryEditResult qer = (tagVSQueryEditResult)verdict;
                    if (ErrorHandler.Failed(hr) || (qer != tagVSQueryEditResult.QER_EditOK))
                    {
                        if (!suppressUI && !Utilities.IsInAutomationFunction(this.Site))
                        {
                            string message = SR.GetString(SR.CancelQueryEdit, path);
                            string title = string.Empty;
                            OLEMSGICON icon = OLEMSGICON.OLEMSGICON_CRITICAL;
                            OLEMSGBUTTON buttons = OLEMSGBUTTON.OLEMSGBUTTON_OK;
                            OLEMSGDEFBUTTON defaultButton = OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST;
                            VsShellUtilities.ShowMessageBox(this.Site, title, message, icon, buttons, defaultButton);
                        }
                        result = false;
                    }
                }
            }
            return result;
        }