c# date compare validation

Question

i have two text vox with calender image
one is start date another is end date i want end date aways greater than start date how i validate plz help me
<asp:CompareValidator ID="CompareValidator1"
                                                                ControlToValidate="txt_enddate" Type="Date" Operator="GreaterThanEqual"
                                                                ErrorMessage="end date should be greated than startdate"
                                                                ControlToCompare="start_sdate" runat="server"></asp:CompareValidator>

Sunny Sharma · Answer

Hi yes you were on the right point. sorry for I looked your code in a hurry. you already have specified a Date Format in (dd-mm-yy). validators use the current CultureInfo object to determine the date format. As a simple workaround change the Date Format of Extender to (dd/mm/yyyy). Thanks.

Bhabani prasad Dash · Answer

no u go through code again am clearly mention type date but i think error is coming due to date format if u change the format i think it may be helpful

Sunny Sharma · Answer

Hi I went through your code. It all works fine. Seems you missed to mention type of comparison inside the CompareValidator. Try the sample below: ----------------------------------------- Type=Date Operator=GreaterThan ControlToCompare=txtStartDate ErrorMessage=Invalid Date Selected ControlToValidate=txtEndDate> ----------------------------------------- Hope it helps :) Thanks.

Bhabani prasad Dash · Answer

here is my source code

Sunny Sharma · Answer

Any error message you're getting? The code I've suggested you is tested and working absolutely fine Please share codes in your .aspx page so that I can get a better picture. Thanks.

Bhabani prasad Dash · Answer

its not working

Sunny Sharma · Answer

Hi Only a minor modification required if you want the End date to be always greater than the Start date: ------------------------------------------------------ ControlToValidate=txt_enddate Type=Date Operator= GreaterThan  ErrorMessage=end date should be greated than startdate ControlToCompare=start_sdate runat=server> ------------------------------------------------------ Change the Operator property to  GreaterThan  from  GreaterThanEqual . GreaterThanEqual will check for a date greater than or equal to the date present in txtStartDate. Hope you got the idea! Happy Coding:) Please mark this as answer if it helps! Thanks.