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POSum the values of a WPF datagrid column without additional query?
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copied!<p>I'm populating the following WPF datagrid:</p> <p><img src="https://i.stack.imgur.com/AFN1T.png" alt="enter image description here"></p> <p>Using the following method:</p> <pre><code>private void ButtonFilterWorkflowWhenClick(object sender, RoutedEventArgs e) { var db = new DatabaseHandle(); dataGridWorkflow.ItemsSource = db.DisplayHealthIndicator(DateTime.Now, DateTime.Now); labelWorkflowLastLoaded.Content = "Last Loaded at " + DateTime.Now.ToString(CultureInfo.InvariantCulture) + " with " + dataGridWorkflow.Items.Count.ToString(CultureInfo.InvariantCulture) + " total events."; } </code></pre> <p>Which references the following class object:</p> <pre><code>public DataView DisplayHealthIndicator(DateTime startDate, DateTime endDate) { string queryString = "[marlin].[support_retrieve_workflow_history]"; using (SqlConnection connection = new SqlConnection(GetConnectionString())) { using (var cmd = new SqlCommand(queryString, connection)) { connection.Open(); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("date_from", startDate.Date); cmd.Parameters.AddWithValue("date_to", endDate.Date); var reader = cmd.ExecuteReader(); var dt = new DataTable(); dt.Load(reader); connection.Close(); return dt.DefaultView; } } } </code></pre> <p>I'm trying to find a way that I can find the sum of the total column so I can add it to my label but having no success. I can do this with a second query but I'd like to avoid that wherever possible. How should I approach this problem?</p>

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