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Improvement for "Conditionally Hide Hierarchical Grid Expand Button" article #740

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Improvement for "Conditionally Hide Hierarchical Grid Expand Button" article #740

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9 changes: 8 additions & 1 deletion knowledge-base/grid-conditional-expand-button.md
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ I would like the expand to only be visible when it has further data to expand.
Use the [`OnRowRender` event]({%slug grid-events%}#onrowrender) to evaluate the current row item (for example, whether it has child items in a collection or some other flag your application has).

Then, if you want to hide the expand icon, set a CSS class to the row that will hide the button in the expand cell.
You should also set the visibility of the td to hidden, so the click event is not triggered when clicking in the td.

>caption Hide the expand button conditionally per row

Expand All @@ -43,9 +44,15 @@ Then, if you want to hide the expand icon, set a CSS class to the row that will
conditionally hide hierarchy expand buttons.
You may want to add this to your site-wide stylesheet.
*/
/* Hide the expand icon. */
.k-grid tr.no-children td.k-hierarchy-cell * {
display: none;
}

/* Set the visibility of .k-hierarchy-cell to hidden, so the click is not trigger when clicking in the td. */
.k-grid tr.no-children td.k-hierarchy-cell {
visibility: hidden;
}
</style>

<TelerikGrid Data="@salesTeamMembers" OnRowRender="@OnRowRenderHandler">
Expand Down Expand Up @@ -73,7 +80,7 @@ Then, if you want to hide the expand icon, set a CSS class to the row that will
MainModel item = args.Item as MainModel;

bool hasNoHierarchy = item.Orders == null || item.Orders.Count == 0;
args.Class = hasNoHierarchy ? "" : "no-children";
args.Class = hasNoHierarchy ? "no-children" : "";
}

// sample data generation follows
Expand Down