Hi @Aman Devrath, You can Use ActiveSort Variable in GridSortChange Event and check the count based on count you can restrict the sorting in Grid by having a variable Issorting allow in All columns.

Hi @Aman Devrath, 

In OnSortChangeEvent add one local variable named counter by default = 3 and later decrease when sort is changed. so that If counter reaches to 0 disable the sort option of the columns.  

Hello @Aman Devrath,

I went through the Wijmo Flexgrid documentation and you can achieve this through extensibility by using the unsupported javascript APIs by adding the following code to a JS Node inside the Initialize event handler from the Grid block:

const MAX_SORT_COLUMNS = 3;

// Restrict sorting and filtering based on max limits
function enforceLimit(e, collection, property, maxLimit, message) {
    const col = e.getColumn(e.col);
    const bindings = new Set(collection.map((i) => i[property]));

    if (bindings.size >= maxLimit && !bindings.has(col.binding)) {
        e.cancel = true;
        // Add here the feedback or action you want, so this alert() is an example
        alert(message);
    }
}

// Store your provider instance
let theGrid = OutSystems.GridAPI.GridManager.GetGridById($parameters.GridWidgetId).provider;

// Restrict sorting to max 3 columns
theGrid.sortingColumn.addHandler((s, e) =>
    enforceLimit(
        e,
        s.collectionView.sortDescriptions,
        'property',
        MAX_SORT_COLUMNS,
        "Remove some column's sort state first"
    )
);

	

Hope it helps!

Best Regards,
GM