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    <p>According to your comment that filling in only an end date gave you an error, I would suggest you should probably parenthesise your <code>if</code> statement more to force order of operations.</p> <pre><code>if ( (txtComStartDate.Text != (String.Empty) &amp;&amp; DateTime.Parse(itemDate) &gt;= DateTime.ParseExact(txtComStartDate.Text, "dd/MM/yy", provider)) || (txtComEndDate.Text != (String.Empty) &amp;&amp; DateTime.Parse(itemDate) &lt;= DateTime.ParseExact(txtComEndDate.Text, "dd/MM/yy", provider)) || (DateTime.Parse(itemDate) &gt;= DateTime.ParseExact(txtComStartDate.Text, "dd/MM/yy", provider) &amp;&amp; DateTime.Parse(itemDate) &lt;= DateTime.ParseExact(txtComEndDate.Text, "dd/MM/yy", provider)) ) </code></pre> <p>You were probably hanging up on <code>DateTime.ParseExact(txtComStartDate.Text, "dd/MM/yy", provider))</code> which was likely empty, since you were only entering an end date.</p> <p><strong>Edit:</strong> Your problem is the short-circuiting of the conditional. If you enter both a <code>txtComStartDate</code> and a <code>txtComEndDate</code>, your conditional won't make it to the condition (both values entered) since you're using an <code>OR</code>. Since having both a start and an end will make the first part of the statement true, it's going to show all nodes that are past your start date; without regard to your end date.</p> <p>You can do a check for both values before your filter: <code>if(txtComStartDate.Text != (String.Empty))</code>, <code>if(txtComEndDate.Text != (String.Empty))</code></p> <p>and implement the filtering after doing this- ensuring you get the sure intent of the user.</p>
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    1. POFiltering Search Criteria Using If Statement, && and ||
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    1. USDavid B
    1. USDavid B
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    1. COWhen I input both start 18/08/12 and end date 19/08/12, it doesn't filter. it shows all the data from 16/08/12 to 20/08/12.
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    2. CO@Shyuan You're not showing us the bulk of your sorting, so it's difficult to tell what could be going wrong. I'd try implementing something like Tigran's answer to clarify your sorting structure.
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      1. USDavid B
    3. COHi David, I have updated my code in my original question. that's the function to look for data from XML files. So which item nodes fit the dates chosen will display in richComByTemplate area. Thank you :(
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