c# - How to allow only decimals in TextBox in WPF? -

i have 2 textbox in wpf, , want 1 of them allow integer inputs , other 1 decimal inputs precision of two. looks this:

<label>price:</label> <textbox     name="price"     previewtextinput="decimalvalidationtextbox"     text="{binding path=price}" /> <label>mileage:</label> <textbox     name="mileage"     previewtextinput="integervalidationtextbox"     text="{binding path=mileage}" /> 

and 2 handler this:

private void decimalvalidationtextbox(object sender, textcompositioneventargs e) {     regex regex = new regex("^[0-9]+([.][0-9]{1,2})?$");     e.handled = regex.ismatch(e.text); }  private void integervalidationtextbox(object sender, textcompositioneventargs e) {     regex regex = new regex("[^0-9]+");     e.handled = regex.ismatch(e.text); } 

the point 1 used integers, namely integervalidationtextbox works fine, , can type integer values. problem first 1 used decimals, namely decimalvalidationtextbox. can write except numbers in there. ideas how allow decimals of precision 2 in textbox?