Using the CompareValidator control to compare user input date with today's date

.net, asp.net, comparevalidator, validation

Solution

You're just using the `ValueToCompare` property as a literal string. You need to use ASP tags in it if you want to execute code to get a dynamic value. Try this:

<asp:comparevalidator runat="server" 
  errormessage="The date must be greater than today"
  controltovalidate="txtDate1" type="date" 
  valuetocompare="<%# DateTime.Today.ToShortDateString() %>" />

Then in your `Page_Load` method, call `Page.DataBind()`.

This will execute the databinder code when the page is loaded, and put the value in between the quotes.

Problem

hey..i would like to compare the current date with the date entered by user..however, i'm encountering errors so far.. i tried something like this: ``` <asp:TextBox id="txtDate1" runat="server" /> <asp:CompareValidator runat="server" ErrorMessage="The date must be greater than today" ControlToValidate="txtDate1" type="date" ValuetoCompare="DateTime.Today.ToShortDateString()" /> ``` and i got an error stating that the value of `DateTime.Today.ToShortDateString()` of the `ValueToCompare` property of "" cannot be converted to type 'date' i also tried `ValueToCompare="DateTime.Now.Date()"` and i got the same error message. please help me and i greatly appreciate it.

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