What data type does the RangeValidator control support ?

<asp:RangeValidator 

     id="ProgrammaticID" 

     ControlToValidate="ProgrammaticID of control to validate" 

     MinimumValue="value"

     MaximumValue="value" 

     Type="DataType" 

     ErrorMessage="Message to display in ValidationSummary control"

     Text="Message to display in control"

     ForeColor="value" 

     BackColor="value"  

     runat="server" >

</asp:RangeValidator>