Docs API Reference

BindingSelectionChangedEventArgs.columnCount property

Gets the number of columns selected.

Hosts: Access, Excel, Word
Last changed in 1.1
var colCount = eventArgsObj.columnCount;

Return value

The number of columns selected. If a single cell is selected returns 1.


If the user makes a non-contiguous selection, the count for the last contiguous selection within the binding is returned.

For Word, this property will work only for bindings of BindingType "table". If the binding is of type "matrix", null is returned. Also, the call will fail if the table contains merged cells, because the structure of the table must be uniform for this property to work correctly.


The following example adds an event handler for the SelectionChanged event to the binding with an id of myTable. When the user changes the selection, the handler displays the coordinates of the first cell in the selection, and the number of row and columns selected.

function addSelectionHandler() {
    Office.context.document.bindings.getByIdAsync("myTable", function (result) {
        result.value.addHandlerAsync("bindingSelectionChanged", myHandler);

// Display selection start coordinates and row/column count.
function myHandler(bArgs) {
    write("Selection start row/col: " + bArgs.startRow + "," + bArgs.startColumn);
    write("Selection row count: " + bArgs.rowCount);
    write("Selection col count: " + bArgs.columnCount);
// Function that writes to a div with id='message' on the page.
function write(message){
    document.getElementById('message').innerText += message; 

Support details

A capital Y in the following matrix indicates that this property is supported in the corresponding Office host application. An empty cell indicates that the Office host application doesn't support this property.

For more information about Office host application and server requirements, see Requirements for running Office Add-ins.

Supported hosts, by platform

Office for Windows desktop Office Online (in browser) Office for iPad
Access Y
Excel Y Y Y
Word Y Y
Minimum permission level Restricted
Add-in types Content, task pane
Library Office.js
Namespace Office

Support history

Version Changes
1.1 Added support for Excel and Word in Office for iPad.
1.1 You can now add and remove event handlers for the SelectionChanged event in content add-ins for Access.
1.0 Introduced