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  1. PO
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    <p>As far as I know, I would do it manually via the summary label's BeforePrint event. Calculate the required sum with code, and assign the result to the Text property of the label. This works well if you can explicitly access your datasource in the report (for example if you use IList datasource).</p> <pre><code>private void sumLabel_BeforePrint(object sender, BeforeEventArgs e) { XRLabel lbl = sender as XRLabel; if (lbl == null) return; int sum = myList.Where(item =&gt; item.Result == "P").Sum(item =&gt; item.TotalMarks); lbl.Text = sum; } </code></pre> <p>With another manual solution you could summarize the required values during printing the report by handling the Detail band's BeforePrint event, and then assign the calculated sum to the sum label in its BeforePrint event similarily to above. This approach is more efficient and flexible for more complicated datasources.</p> <pre><code>int currentSum = 0; private void Detail_BeforePrint(object sender, BeforeEventArgs e) { var currentRow = GetCurrentRow() as MyData; if (currentRow == null) return; if (currentRow.Result == "P") currentSum += currentRow.TotalMarks; } private void sumLabel_BeforePrint(object sender, BeforeEventArgs e) { XRLabel lbl = sender as XRLabel; if (lbl == null) return; lbl.Text = currentSum; // invalidate the currentSum for the case of any further report pringing process currentSum = 0; } </code></pre> <p>Unfortunately I don't know about any solution which could be applied purely by designer. Hope it helps.</p>
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    1. POhow to calculate conditional sum in devexpress xtrareport
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    1. USZoltán Tamási
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    1. COI asked this question two days ago and had found its solution by adding a calcultedfield and assigning this "Iif([Result]='P',[TotalMarks],0 )" formula in expression editor and than calculating the sum in same way as I did for my 125 result. any ways thanks alot
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    2. COYes, that's a more elegant solution. I had a much more complex scenario where I had to use code. Anyway I hope it will be helpful some day.
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