Question

I have a asp:rangevalidator control on a textbox that is used to enter the birthdate.

<asp:RangeValidator ID="valrDate" runat="server" ControlToValidate="txtDateOfBirth" MinimumValue="12/31/1950" MaximumValue="1/1/2012" Type="Date" text="Invalid Date" Display="Dynamic"/> 

I would really like the ability to change the values of the minimum and maximum based on logic that will throw up a validation notice that indicates the date entered is outside of the allowed range of dates.

Can this be accomplished?

thanks
tony

Answer 1

you can set it in code behind like:

protected void Page_Load(object sender, EventArgs e)
{
    datetime dynamicMaxValue;
    datetime dynamicMinValue;

    //Code to compute dynamic Max/Min Value
    //...
    valrDate.MaximumValue = dynamicMaxValue; //Dynamic Max Value
    valrDate.MinimumValue = dynamicMinValue; //Dynamic Min Value
}