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POHow can I validate the date is not the future date in .net c#
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  1. POHow can I validate the date is not the future date in .net c#
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    copied!<p>Just wandering, how can I validate the date is not the future date in .net c#.</p> <p>Example:</p> <p>I have applied a validation there for required field validation. But somehow I have no idea how to apply the validation to check the start date to make sure it's not the future date (date not greater then the current date)?</p> <pre><code> &lt;tr&gt; &lt;td align="right"&gt;Start Date:&lt;/td&gt; &lt;td&gt;&lt;asp:TextBox runat="server" ID="activeDate" size="8"/&gt;(YYYY-MM-DD) &lt;asp:RequiredFieldValidator ID="reqvactiveDate" runat="server" ControlToValidate="activeDate" Display="Dynamic" EnableClientScript="true" ErrorMessage="required" /&gt; &lt;/td&gt; &lt;/tr&gt; </code></pre> <p>than I wrote the following code to tried out the date validation. The date validation doesn't seem working for me :(</p> <pre><code> &lt;tr&gt; &lt;td align="right"&gt;Start Date:&lt;/td&gt; &lt;td&gt;&lt;asp:TextBox runat="server" ID="activeDate" size="8"/&gt;(YYYY-MM-DD) &lt;asp:RequiredFieldValidator ID="reqvactiveDate" runat="server" ControlToValidate="activeDate" Display="Dynamic" EnableClientScript="true" ErrorMessage="required" /&gt; &lt;asp:CustomValidator runat="server" ID="valDateRange" ControlToValidate="activeDate" onservervalidate="valDateRange_ServerValidate" ErrorMessage="enter valid date" /&gt; &lt;/td&gt; &lt;/tr&gt; </code></pre> <p>code behind:</p> <pre><code> protected void valDateRange_ServerValidate(object source, ServerValidateEventArgs args) { DateTime minDate = DateTime.Parse("1000/12/28"); DateTime maxDate = DateTime.Parse("2011/05/26"); DateTime dt; args.IsValid = (DateTime.TryParse(args.Value, out dt) &amp;&amp; dt &lt;= maxDate &amp;&amp; dt &gt;= minDate); } </code></pre>
 

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