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The TextChanged event occurs when the following steps are followed:

  1. The InputType="Text" is set for the RadAutoCompleteBox;

  2. The text in the input field has been changed (either one of the previously available entries has been removed or new text has been typed in);

  3. An item from the results drop-down list has been selected (necessary only when the AllowCustomEntry of the RadAutoCompleteBox is not set or it is set to "false");

  4. The focus has been removed from the control's input element.

The TextChanged event handler receives two arguments:

  1. The RadAutoCompleteBox object. This argument is of type object, but can be cast to the RadAutoCompleteBox type.

  2. An AutoCompleteTextEventArgs object. This object has a Text property of type string.

protected void RadAutoCompleteBox1_TextChanged(object sender, AutoCompleteTextEventArgs e)
    Label1.Text = "Text changed to: " + e.Text;

Protected Sub RadAutoCompleteBox1_TextChanged(sender As Object, e As AutoCompleteTextEventArgs)
    Label1.Text = "Text changed to: " + e.Text
End Sub

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