There was an error in callback while hooking Ribbon button in project server

Question

Hi All,
We are getting sporadic issue related to Callback error in project server after implementation of to hook save ribbon button.
Error Description:-
eThere was an error in the callback.384|/wEWLALXmdD0DAKpn5bCCwLNrvW5AwK9+p7tAgLo7L7kCgKNqJ6SDALd66mOAgK28832DwKP8832DwKz87HKBgK386WtDQK186WtDQKJ84mABALh4KLMBgLY4KLMBgLk4N7wDwLg4MqXBALi4MqXBALe4Oa6DQKThqG1AwKqhqG1AwKWht2JCgKShsnuAQKQhsnuAQKshuXDCAK9ptOEBQKEptOEBQK4pq+4DAK8prvfBwK+prvfBwKCppfyDgLA+vSFDQL5+vSFDQLF+oi5BALB+pzeDwLD+pzeDwL/+rDzBgLHtYnXAgL+tYnXAgLCtfXrCwLGteEMAsS14QwC+LXNoQkCyOSp1g+AouWT1aul62L1BetYTwN/Gc1roQ==s<RESULT
/>
 Please have a look at code implementation for hooking save button;-
OnPreRender implemented java script code to hook the ribbon “Save” button. Attached code for your reference.
Code:-
protected override void OnPreRender(EventArgs e)
                base.OnPreRender(e);
                var saveFunc = Page.ClientScript.GetPostBackClientHyperlink(_lnbSaveProject, "");
                //register script for hooking up into the page structure.
                var uniqueScriptName = "PDP Class " + ClientID;
                var script = string.Format(@"
                                        var WPDP_{0} =  new
object();
                                        var oElem = null;
                                        WPDP_{0}.Save = 
function pfp_Save(ctx)
if({1})
var arg = '';
{2}
ctx.Completed();
                                        WPDP_{0}.Validate = 
function pfp_Validate()
return true;
                                        function SaveCallback_{0}(result,
ctx) {{ 
if (result != '') {{ 
SaveErrorCallback_{0}(result, ctx); 
else {{ 
ctx.Completed(); 
                                        function SaveErrorCallback_{0}(result,
ctx) {{ 
ctx.FailedShowInlineErrors(result); 
                                        WPDP_{0}.IsDirty =
false;", ClientID, doesFileExist.ToString().ToLower(), saveFunc);
                Page.ClientScript.RegisterClientScriptBlock(GetType(), uniqueScriptName, script, true);
Note:-
1) There is no  Error occurs in event viewer , SharePoint trace log
2) We have done exception handling for all the methods and tracking it at data base level but no exception found
3) HTTPS implemented.
Let me know in case of any query.
Regards
Vipin Upadhyay
Vipin Upadhyay

Answer 1

Hi All,
We are getting sporadic issue related to Callback error in project server after implementation of to hook save ribbon button.
Error Description:-
eThere was an error in the callback.384|/wEWLALXmdD0DAKpn5bCCwLNrvW5AwK9+p7tAgLo7L7kCgKNqJ6SDALd66mOAgK28832DwKP8832DwKz87HKBgK386WtDQK186WtDQKJ84mABALh4KLMBgLY4KLMBgLk4N7wDwLg4MqXBALi4MqXBALe4Oa6DQKThqG1AwKqhqG1AwKWht2JCgKShsnuAQKQhsnuAQKshuXDCAK9ptOEBQKEptOEBQK4pq+4DAK8prvfBwK+prvfBwKCppfyDgLA+vSFDQL5+vSFDQLF+oi5BALB+pzeDwLD+pzeDwL/+rDzBgLHtYnXAgL+tYnXAgLCtfXrCwLGteEMAsS14QwC+LXNoQkCyOSp1g+AouWT1aul62L1BetYTwN/Gc1roQ==s<RESULT
/>
 Please have a look at code implementation for hooking save button;-
OnPreRender implemented java script code to hook the ribbon “Save” button. Attached code for your reference.
Code:-
protected override void OnPreRender(EventArgs e)
                base.OnPreRender(e);
                var saveFunc = Page.ClientScript.GetPostBackClientHyperlink(_lnbSaveProject, "");
                //register script for hooking up into the page structure.
                var uniqueScriptName = "PDP Class " + ClientID;
                var script = string.Format(@"
                                        var WPDP_{0} =  new
object();
                                        var oElem = null;
                                        WPDP_{0}.Save = 
function pfp_Save(ctx)
if({1})
var arg = '';
{2}
ctx.Completed();
                                        WPDP_{0}.Validate = 
function pfp_Validate()
return true;
                                        function SaveCallback_{0}(result,
ctx) {{ 
if (result != '') {{ 
SaveErrorCallback_{0}(result, ctx); 
else {{ 
ctx.Completed(); 
                                        function SaveErrorCallback_{0}(result,
ctx) {{ 
ctx.FailedShowInlineErrors(result); 
                                        WPDP_{0}.IsDirty =
false;", ClientID, doesFileExist.ToString().ToLower(), saveFunc);
                Page.ClientScript.RegisterClientScriptBlock(GetType(), uniqueScriptName, script, true);
Note:-
1) There is no  Error occurs in event viewer , SharePoint trace log
2) We have done exception handling for all the methods and tracking it at data base level but no exception found
3) HTTPS implemented.
Let me know in case of any query.
Regards
Vipin Upadhyay
Vipin Upadhyay