Add note regarding persisting requirement for row selection.

skrustev · skrustev · commit c9db507457a3 · 2024-10-22T21:23:29.000+03:00
diff --git a/en/components/grids_templates/state-persistence.md b/en/components/grids_templates/state-persistence.md
@@ -94,6 +94,9 @@ _canonicalLink: grid/state-persistence
 > The [`IgxGridState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html) directive does not take care of templates. Go to [Restoring Column](state-persistence.md#restoring-columns) section to see how to restore column templates.
 }
 
+>[!NOTE]
+> The `Row Selection`  feature requires the [`primaryKey`]({environment:angularApiUrl}/classes/IgxGridComponent.html#primaryKey) property to be set, so it can be stored/restored correctly.
+
 ## Usage
 
 [`getState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html#getState) - This method returns the grid state in a serialized JSON string, so developers can just take it and save it on any data storage (database, cloud, browser localStorage, etc). The method accepts first optional parameter `serialize`, which determines whether [`getState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html#getState) will return an [`IGridState`]({environment:angularApiUrl}/interfaces/igridstate.html) object or a serialized JSON string.

Original file line number	Diff line number	Diff line change
`@@ -94,6 +94,9 @@ _canonicalLink: grid/state-persistence`
`94`	`94`	> The [`IgxGridState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html) directive does not take care of templates. Go to [Restoring Column](state-persistence.md#restoring-columns) section to see how to restore column templates.
`95`	`95`	`}`
`96`	`96`
	`97`	`+>[!NOTE]`
	`98`	+> The `Row Selection` feature requires the [`primaryKey`]({environment:angularApiUrl}/classes/IgxGridComponent.html#primaryKey) property to be set, so it can be stored/restored correctly.
	`99`	`+`
`97`	`100`	`## Usage`
`98`	`101`
`99`	`102`	[`getState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html#getState) - This method returns the grid state in a serialized JSON string, so developers can just take it and save it on any data storage (database, cloud, browser localStorage, etc). The method accepts first optional parameter `serialize`, which determines whether [`getState`]({environment:angularApiUrl}/classes/igxgridstatedirective.html#getState) will return an [`IGridState`]({environment:angularApiUrl}/interfaces/igridstate.html) object or a serialized JSON string.