update after review

Author: NansiYancheva

common-features/data-binding/descriptors.md

@@ -9,11 +9,11 @@ position: 10
 ---
 
 
-## Components with Descriptors
+## Data Operation Descriptors
 
 This article explains how to retrieve the applied filtering, searching, sorting, and grouping criteria in Blazor components. The article applies to components that support these features. The components that offer one or all of the functionalities are:
 
-* [Components that [expose an `OnRead` event]({%slug common-features-data-binding-onread%}#components-with-onread-event), excluding the [ListView]({%slug listview-overview%}), because the ListView doesn't support built-in filtering, searching, sorting, and grouping.
+* Components that [expose an `OnRead` event]({%slug common-features-data-binding-onread%}#components-with-onread-event), excluding the [ListView]({%slug listview-overview%}), because the ListView doesn't support built-in filtering, searching, sorting, and grouping.
 * [Filter]({%slug filter-overview%})
 * [Gantt]({%slug gantt-overview%})
 * [TreeList]({%slug treelist-overview%})
@@ -44,8 +44,9 @@ async Task OnReadHandler(...ReadEventArgs args)
 }
 ````
 
-#### Through the Component State
-Use the component state property of the `OnStateChanged` event argument. For example:
+### Through the Component State
+
+Use the component state property of the `OnStateChanged` event argument. This approach is applicable for the Gantt, the Grid and the TreeList, because they expose the state feature. For example:
 
 ````CS
 async Task OnStateChangedHandler(GridStateEventArgs<Product> args)
@@ -68,21 +69,21 @@ async Task OnStateChangedHandler(GridStateEventArgs<Product> args)
 }
 ````
 
-At the bottom of the article you will find full examples.
+See full examples at the bottom of the article.
 
 
 ## Filtering
 
-The filtering criteria for each filtered field is stored in an individual collection of [`IFilterDescriptor`](/blazor-ui/api/Telerik.DataSource.IFilterDescriptor). To access the filtering criteria, such as the user input to filter by, cast each `IFilterDescriptor`:
+The filtering criteria for each filtered field are stored in an individual collection of [`IFilterDescriptor`](/blazor-ui/api/Telerik.DataSource.IFilterDescriptor). To access the filtering criteria, such as the user input to filter by, cast each `IFilterDescriptor`:
 
-* If the component is of type input or select, such as the AutoComplete, the ComboBox, the DropDownList, the MultiColumnComboBox, the MultiSelect, cast each `IFilterDescriptor` to [`FilterDescriptor`](/blazor-ui/api/telerik.datasource.filterdescriptor).
+* If the component is of type input or select, such as the AutoComplete, the ComboBox, the DropDownList, the MultiColumnComboBox, the MultiSelect, cast the first `IFilterDescriptor` from the collection to [`FilterDescriptor`](/blazor-ui/api/telerik.datasource.filterdescriptor).
 * Otherwise, cast each `IFilterDescriptor` to [`CompositeFilterDescriptor`](/blazor-ui/api/Telerik.DataSource.CompositeFilterDescriptor).
 
 ### CompositeFilterDescriptor
 
 The `CompositeFilterDescriptor` exposes:
 
-* [`FilterDescriptors`](/blazor-ui/api/telerik.datasource.compositefilterdescriptor#Telerik_DataSource_CompositeFilterDescriptor_FilterDescriptors) property. This property represents another collection of `IFilterDescriptor`. To access the filtering criteria cast each `IFilterDescriptor` to a `FilterDescriptor`.
+* [`FilterDescriptors`](/blazor-ui/api/telerik.datasource.compositefilterdescriptor#Telerik_DataSource_CompositeFilterDescriptor_FilterDescriptors) property. This property represents another collection of `IFilterDescriptor`. To access the filtering criteria cast each `IFilterDescriptor` to a `FilterDescriptor`. When the Filter component gets groupable filtering, cast each `IFilterDescriptor` to another `CompositeFilterDescriptor`.
 * [`LogicalOperator`](/blazor-ui/api/telerik.datasource.compositefilterdescriptor#Telerik_DataSource_CompositeFilterDescriptor_LogicalOperator) property. This property can be either `AND` or `OR`. This property represents the logical operator applied between the instances in the `FilterDescriptors` collection.
 
 When the filtering is initiated, the `CompositeFilterDescriptor` properties get different values, depending on the filter mode:
@@ -97,7 +98,7 @@ When the filtering is initiated, the `CompositeFilterDescriptor` properties get
 
 ## Searching
 
-The searching criteria are stored in an individual `IFilterDescriptor`. To access the filtering criteria, cast the `IFilterDescriptor` to `CompositeFilterDescriptor`. The `FilterDescriptors` property of the `CompositeFilterDescriptor` gets filter descriptor instances for all string fields. Each filter descriptor instance gets the user input as `Value`. The value of the `LogicalOperator` property of the `CompositeFilterDescriptor` is OR.
+The searching criteria in a Grid or TreeList are stored in an individual `IFilterDescriptor`. Cast it to [`CompositeFilterDescriptor`](#compositefilterdescriptor). The `CompositeFilterDescriptor` holds one child `FilterDescriptor`s for each searchable string column. Each `FilterDescriptor` has the same `Value`, which is the user search input. The value of the `LogicalOperator` property of the `CompositeFilterDescriptor` is `Or`.
 
 
 ## Sorting
@@ -112,9 +113,9 @@ The sorting criteria are stored in a collection of [`SortDescriptor`](/blazor-ui
 Тhe grouping criteria for each group is stored in an individual collection of [`GroupDescriptor`](/blazor-ui/api/telerik.datasource.groupdescriptor). The `GroupDescriptor` class inherits the `SortDescriptor` class and gives access to the same properties as the `SortDescriptor` class.
 
 
-## Examples
+## Example with OnRead Event Handler
 
-#### Obtain the FilterDescriptor, SearchFilter, SortDescriptor, GroupDescriptor in the OnRead Event Handler
+You can obtain the FilterDescriptor, SortDescriptor, GroupDescriptor in the `OnRead` event handler.
 
 ````CSHTML
 @using Telerik.DataSource
@@ -204,7 +205,9 @@ The sorting criteria are stored in a collection of [`SortDescriptor`](/blazor-ui
 }
 ````
 
-#### Obtain the FilterDescriptor, SearchFilter, SortDescriptor, GroupDescriptor Through the Component State
+## Example with Component State
+
+You can obtain the FilterDescriptor, SearchFilter, SortDescriptor, GroupDescriptor through the component state.
 
 ````CSHTML
 @using System.Text.Json

components/autocomplete/events.md

@@ -116,15 +116,15 @@ from model: @Role
 
 ## OnRead
 
-You can use the he [`OnRead` event]({%slug common-features-data-binding-onread%}) to provide data to the component according to some custom logic and according to the current user input and/or scroll position (for [virtualization]({%slug autocomplete-virtualization%})). The event fires when:
+You can use the [`OnRead` event]({%slug common-features-data-binding-onread%}) to provide data to the component according to some custom logic and according to the current user input and/or scroll position (for [virtualization]({%slug autocomplete-virtualization%})). The event fires when:
 
-* the component initializes
-* the user [filters]({%slug autocomplete-filter%})
-* the user scrolls with [virtualization]({%slug autocomplete-virtualization%}) enabled
+* The component initializes.
+* The user [filters]({%slug autocomplete-filter%}).
+* The user scrolls with [virtualization]({%slug autocomplete-virtualization%}) enabled.
 
 You can also call remote data through async operations.
 
-Find out how to [get the applied by the user filtering and grouping criteria]({%slug common-features-descriptors%}).
+Find out how to [get the applied filtering and grouping criteria]({%slug common-features-descriptors%}).
 
 When using `OnRead`, make sure to set `TItem` and `TValue`.
 

components/autocomplete/filter.md

@@ -16,7 +16,7 @@ To enable filtering, set the `Filterable` parameter to `true`. The filtering is
 
 You can also use the [`OnRead` event]({%slug autocomplete-events%}#onread) to:
 * Get the [applied filtering criteria]({%slug common-features-descriptors%}#through-the-onread-event).
-* Implement custom (server) filtering and set a data source dynamically.
+* Implement custom (server) filtering and set data dynamically.
 
 ## Filter Operator
 

components/combobox/events.md

@@ -177,13 +177,13 @@ See the [ComboBox Overview - Selected Item]({%slug components/combobox/overview%
 
 You can use the [`OnRead` event]({%slug common-features-data-binding-onread%}) to provide data to the component according to some custom logic and according to the current user input and/or scroll position (for [virtualization]({%slug combobox-virtualization%})). The event fires when:
 
-* the component initializes
-* the user [filters]({%slug components/combobox/filter%})
-* the user scrolls with [virtualization]({%slug combobox-virtualization%}) enabled
+* The component initializes.
+* The user [filters]({%slug components/combobox/filter%}).
+* The user scrolls with [virtualization]({%slug combobox-virtualization%}) enabled.
 
 You can also call remote data through `async` operations.
 
-Find out how to [get the applied by the user filtering and grouping criteria]({%slug common-features-descriptors%}).
+Find out how to [get the applied filtering and grouping criteria]({%slug common-features-descriptors%}).
 
 When using `OnRead`, make sure to set `TItem` and `TValue`.
 

components/combobox/filter.md

@@ -16,7 +16,7 @@ To enable filtering, set the `Filterable` parameter to `true`. The filtering is
 
 You can also use the [`OnRead` event]({%slug components/combobox/events%}#onread) to:
 * Get the [applied filtering criteria]({%slug common-features-descriptors%}#through-the-onread-event).
-* Implement custom (server) filtering and set a data source dynamically.
+* Implement custom (server) filtering and set data dynamically.
 
 Filtering looks in the `TextField`, and the filter is reset when the dropdown closes.
 

components/dropdownlist/events.md

@@ -101,11 +101,11 @@ from the model: @MySelectedItem
 
 You can use the [`OnRead` event]({%slug common-features-data-binding-onread%}) to provide data to the component according to some custom logic and according to the current user input and/or scroll position (for [virtualization]({%slug dropdownlist-virtualization%})). The event fires when:
 
-* the component initializes
-* the user [filters]({%slug components/dropdownlist/filter%})
-* the user scrolls with [virtualization]({%slug dropdownlist-virtualization%}) enabled.
+* The component initializes.
+* The user [filters]({%slug components/dropdownlist/filter%}).
+* The user scrolls with [virtualization]({%slug dropdownlist-virtualization%}) enabled.
 
-Find out how to [get the applied by the user filtering and grouping criteria]({%slug common-features-descriptors%}).
+Find out how to [get the applied filtering and grouping criteria]({%slug common-features-descriptors%}).
 
 You can also call remote data through `async` operations.
 

components/dropdownlist/filter.md

@@ -16,7 +16,7 @@ To enable filtering, set the `Filterable` parameter to `true`. The filtering is
 
 You can also use the [`OnRead` event]({%slug components/dropdownlist/events%}#onread) to:
 * Get the [applied filtering criteria]({%slug common-features-descriptors%}#through-the-onread-event).
-* Implement custom (server) filtering and set a data source dynamically.
+* Implement custom (server) filtering and set data dynamically.
 
 Filtering looks in the `TextField`, and the filter is reset when the dropdown closes.
 

components/gantt/gantt-tree/filter/overview.md

@@ -26,12 +26,11 @@ You can filter more than one column at a time, and all filter rules will be appl
 
 ## Filter Descriptors
 
-The filtering criteria for each filtered field are stored in an individual [`CompositeFilterDescriptor`]({%slug common-features-descriptors%}#filtering).
+You can get the applied filtering criteria for each filtered field. Use the [Gantt state]({%slug gantt-state%}) to obtain the user input, the filter operator and other filtering properties. Find out how in the [Data Operation Descriptors article]({%slug common-features-descriptors%}#filtering).
 
 ## Customize The Filter Editors
 
-You can customize the editors rendered in the Gantt
-by providing the `FilterEditorType` attribute, exposed on the `<GanttColumn>`. The `FilterEditorType` attribute accepts a member of the `GanttTreeListFilterEditorType` enum:
+You can customize the editors rendered in the Gantt by providing the `FilterEditorType` attribute, exposed on the `<GanttColumn>`. The `FilterEditorType` attribute accepts a member of the `GanttTreeListFilterEditorType` enum:
 
 | Field data type | GanttTreeListFilterEditorType enum members |
 |-----------------|------------------------------------------|

components/gantt/state.md

@@ -564,7 +564,7 @@ Sometimes you may want to know what the user changed in the Gantt (e.g., when th
 
 Find out what the user changed in the Gantt through the `PropertyName` of the `GanttStateEventArgs`. Override the user action by changing and then setting your desired state.
 
-Find out how to [get the applied by the user filtering and sorting criteria]({%slug common-features-descriptors%}).
+Find out how to [get the applied filtering and sorting criteria]({%slug common-features-descriptors%}).
 
 >caption Know when the Gantt state changes, which parameter changes, and amend the change
 

components/grid/filter/overview.md

@@ -37,7 +37,7 @@ The filter menu can display a [list of checkboxes]({%slug grid-checklist-filter%
 
 ## Filter Descriptors
 
-The filtering criteria for each filtered field are stored in an individual [`CompositeFilterDescriptor`]({%slug common-features-descriptors%}#filtering).
+You can get the applied filtering criteria for each filtered field. Use the [Grid state]({%slug grid-state%}) or the [Grid `OnRead` event handler]({%slug grid-events%}#read-event) to obtain the user input, the filter operator and other filtering properties. Find out how in the [Data Operation Descriptors article]({%slug common-features-descriptors%}#filtering).
 
 ## Custom Filtering