How to support the ImmediatePostData attribute in a custom PropertyEditor

[DevExpress Support Team: CLONED FROM T404423: ASPxTextBox - How to dynamically change the currency mask based on the selected culture]
Thanks for your assistance so far, Lex.

I found that ImmediatePostData is not working when this property editor is used. So I called WriteValue method in TextChangedEvent. And TextChangedEvent was  fired only after setting AutoPostBack to true. After these changes, every time i change the amount, i get a dialogue 'Leave/Stay' when the page is being refreshed. Is there a way for avoiding this dialogue? Or the changes that I have done is it correct to achieve immediatePostData working?

C#
protected override WebControl CreateEditModeControlCore() {  
    DecimalPropertyEditor = new ASPxTextBox();  
    DecimalPropertyEditor.AutoPostBack = true;  
    DecimalPropertyEditor.ID = "CustomDecimalPropertyEditorWeb";  
    DecimalPropertyEditor.ValueChanged += DecimalProperty_ValueChanged;  
    DecimalPropertyEditor.TextChanged += DecimalPropertyEditor_TextChanged;  

void DecimalPropertyEditor_TextChanged(object sender, EventArgs e)  
{  
    EditValueChangedHandler(sender, e);  
    WriteValue();  
}  

Thanks.