var app = angular.module('myApp', []);

app.controller('parentController', function () {
    this.title = 'Title from parent controller';
})

app.controller('childController', function () {
    this.title = 'Title from child controller';
})

<div ng-app="myApp">
    <div ng-controller="parentController as parentCtrl">
        <div ng-controller="childController as childCtrl">
            <input type="text" ng-model="parentCtrl.title" size="100"/>
            <input type="text" ng-model="childCtrl.title" size="100"/>
        </div>
    </div>
</div>

<div ng-app="myApp">
    <div ng-controller="parentController as parentCtrl">
        <div ng-controller="childController as childCtrl">
            <input type="text" ng-model="parentCtrl.title" size="100"/>
            <input type="text" ng-model="parentCtrl.title" size="100"/>
        </div>
    </div>
</div>

columns.AddColumn(column =>
                {
                    column.PropertyName<WeekDayClassSessionSemiRow>(x => x.WD0.Percent);
                    column.CellsHorizontalAlignment(HorizontalAlignment.Left);
                    column.IsVisible(true);
                    column.Order(2);
                    column.Width(100);
                    column.HeaderCell("شنبه", horizontalAlignment: HorizontalAlignment.Left);
                    column.ColumnItemsTemplate(template =>
                    {
                        template.ProgressBar(Color.SkyBlue, true);
                        template.DisplayFormatFormula(obj =>
                        {
                            if (obj == null) return "% 0";
                            return "% " + obj.ToString();
                        });
                    });
                });