# NumericTextBoxValueChanged

The server-side **OnNumericTextBoxValueChanged** event occurs when the user changes the value in the NumericTextBox, causing a postback.

The event handler function receives two arguments:

1. The **RadRibbonBar** which has fired the event. This argument is of type object, but can be cast to the **RadRibbonBar** type.

2. An **EventArgs** object.This object has a number of properties for handling the request for the items:

   * **Value**– the new value of the NumericTextBox.

   * **NumericTextBox** – the NumericTextBox which fired the event.

   * **Group** – the group in which the DropDown is placed.