docs(dropdownlist): Improve ValueChanged lambda expression information

Author: Dimo Dimov

components/combobox/events.md

@@ -21,7 +21,7 @@ This article explains the events available in the Telerik ComboBox for Blazor:
 
 The `ValueChanged` event fires upon every change of the user selection. When [custom values]({%slug components/combobox/custom-value%}) are enabled, it fires upon every keystroke, like in a regular `<input>` element.
 
-The examples below use binding to primitive types for brevity, you can use [full models]({%slug components/combobox/databind%}) as well. Make sure to review the [Data Binding - Missing Value or Data]({%slug components/combobox/databind%}#missing-value-or-data) section to provide all necessary parameters to the component if you do so. The type of the argument in the lambda expression must match the type of the `Value` of the component.
+The examples below use binding to primitive types for brevity, you can use [full models]({%slug components/combobox/databind%}) as well. Make sure to review the [Data Binding - Missing Value or Data]({%slug components/combobox/databind%}#missing-value-or-data) section to provide all necessary parameters to the component if you do so. The type of the argument in the lambda expression must match the `Value` type of the component, and the `ValueField` type (if `ValueField` is set).
 
 >caption Handle ValueChanged
 

components/dropdownlist/events.md

@@ -58,7 +58,7 @@ from the model: @MySelectedItem
 
 The `ValueChanged` event fires upon every change of the user selection.
 
-The examples below use [binding]({%slug components/dropdownlist/databind%}) to primitive types for brevity, you can use full models as well.
+The examples below use [binding]({%slug components/dropdownlist/databind%}) to primitive types for brevity, you can use full models as well. The type of the argument in the lambda expression must match the `Value` type of the component, and the `ValueField` type (if `ValueField` is set).
 
 >caption Handle ValueChanged
 

components/multiselect/events.md

@@ -19,7 +19,7 @@ This article explains the events available in the Telerik MultiSelect for Blazor
 
 ## ValueChanged
 
-The `ValueChanged` event fires when the user selection changes (the user adds or removes items).
+The `ValueChanged` event fires when the user selection changes (the user adds or removes items). The type of the argument in the lambda expression must match the `Value` type of the component.
 
 >caption Handle ValueChanged