ListviewByQuery web Part in SharePoint 2010

If you have  create a custom web part ListviewByQuery API, you will not be able to get the ECB menu.

   listView = new ListViewByQuery();
   listView.ID = "ListViewByQuery1";
   listView.List = List;
   this.Controls.Add(listView);

If you try to open the ECB menu you will receive a error message :-

"The item is no longer available. It may have been deleted by another user. Click "OK' to refresh the page."

Problem here seems to be with *AJAX Type* menu rendering.  The problem happens in CORE.js file where we call into the *FetchEcbInfo* function.  Here, we read the *itemTable* object that’s in the page and pick up the *tagName* of context we are working on.  In AJAX rendering, we look for this tagName to be *DIV*.  However, for the web part using *ListViewByQuery* control, this tagName seems to be *TABLE* and thus this problem.

To work-around,  we have to create a customcore.js and reference it  using ScriptLink control to defer CORE.js and inject a customCore.js file with all the original CORE.js file content Details here: https://msdn.microsoft.com/en-us/library/cc768565.aspx. Change the value of *tagName* to *DIV* and set it back to *TABLE*.  Here’s that particular code snippet from a debug JS file:

div.innerHTML = strInner;

// change introduced by Navdeep Madan

tagName = "DIV";

var tabs = div.getElementsByTagName(tagName);

tagName = "TABLE";

var tab;

The highlighted statements above are the modifications required.  This seems to ensure that the *tabs* variable has the correct table nodes that it’s looking for. 

Note: The above code snippet is from a CORE.debug.js file.  The same modifications in CORE.js file would be like this:

h = "DIV"; for (var i = j.getElementsByTagName(h), d, e = 0; e < i.length; e++) { d = i[e]; if (d.id == f) break } h = "TABLE"; if (e == i.length)

Comments

• Anonymous
  September 18, 2010
  It works.  ECB on the Listviewbyquery works with your core.js fix.   Is this going to be in the next SPF2010 patch?  Thanks for posting otherwise would of giving up.  

• Anonymous
  December 30, 2010
  Hi, I have been trying to use this the ListViewByQuery control on a subsite to display a list from the parent site. It seems to support standard list views fine, however I cannot get the DataSheet view to display on the child site. Is the DataSheet View support for this. Thanks,Moni mattsingh08@gmail.com

• Anonymous
  December 30, 2010
  Hi, I have been trying to use this the ListViewByQuery control on a subsite to display a list from the parent site. It seems to support standard list views fine, however I cannot get the DataSheet view to display on the child site. Is the DataSheet View support for this. Thanks,Moni mattsingh08@gmail.com