Tuesday, 26 November 2013

How to Compare Start Date and End Date and Validate in YYYY-MM-DD Format in ASP.NET

Hi Friends, in this article I will explain about How to Compare Start Date and End Date and Validate in YYYY-MM-DD Format in ASP.NET.
In ASP.NET:
<html xmlns="http://www.w3.org/1999/xhtml">
<head >
    <title>How to Compare Start Date and End Date and Validate in YYYY-MM-DD Format in ASP.NET</title>
    <style type ="text/css" >
    .color
    {
        color:Red;
    }
    </style>


</head>
<body>
    <form id="form1" runat="server">
    <div>  
     Start Date/End Date:<asp:TextBox ID="txtStartDate" runat="server" MaxLength="10"></asp:TextBox>&nbsp; to &nbsp;
     <asp:TextBox ID="txtEndDate" runat="server" MaxLength="10"></asp:TextBox>     <br />
     <asp:RegularExpressionValidator ID="RegStartDate" runat="server" CssClass ="color"  ValidationExpression="(19|20|21)\d\d[-](0[1-9]|1[012])[-](0[1-9]|[12][0-9]|3[01])" ControlToValidate="txtStartDate" ErrorMessage="Enter a  valid Start date e.g (yyyy-mm-dd) ."></asp:RegularExpressionValidator>
     <asp:RegularExpressionValidator ID="RegEndDate" runat="server"  CssClass ="color"  ValidationExpression="(19|20|21)\d\d[-](0[1-9]|1[012])[-](0[1-9]|[12][0-9]|3[01])" ControlToValidate="txtEndDate" ErrorMessage="Enter a valid End date e.g (yyyy-mm-dd) ."></asp:RegularExpressionValidator>     <br />
  <asp:CompareValidator id="cvtxtStartDate" runat="server" CssClass ="color"
       controltocompare="txtEndDate"
       cultureinvariantvalues="true"
       display="Dynamic"
       enableclientscript="true"
       controltovalidate="txtStartDate"
       errormessage="Please ensure that the End Date is greater than Start Date."
       type="Date"
       setfocusonerror="true"
       operator="LessThanEqual"
       text="Please ensure that the End Date is greater than Start Date."/><br />
<asp:Button ID="btnSubmit" runat ="server" Text="Submit"  />
    </div>
    </form>
</body>
</html>


The output of the above code as shown in the below figure.
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