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2011-03-21T19:27:43.997
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<p>This can be implemented using the ASPxGridView using the following approach:</p> <p>1) calculate summary in a separate method. 2) use the detail GridView's DataBound and BeforeGetCallBackResult event handlers to set the label's text. Here is my code:</p> <pre><code>protected int CalcPageSummary(ASPxGridView gridView, string fieldName) { GridViewDataColumn column = gridView.Columns[fieldName] as GridViewDataColumn; if(column == null) return 0; int pageIndex = gridView.PageIndex; int startRowIndex = pageIndex * gridView.SettingsPager.PageSize; int finishRowIndex = startRowIndex + gridView.SettingsPager.PageSize; if(finishRowIndex > gridView.VisibleRowCount) finishRowIndex = gridView.VisibleRowCount; int result = 0; for(int i = startRowIndex; i < finishRowIndex; i++) result += Convert.ToInt32(gridView.GetRowValues(i, fieldName)); return result; } private void SetColumnSummary(ASPxGridView gridView, string fieldName) { ASPxLabel lbl = gridView.FindFooterCellTemplateControl(gridView.Columns[fieldName], "ASPxLabel1") as ASPxLabel; if(lbl != null) lbl.Text = CalcPageSummary(gridView, fieldName).ToString(); } protected void ASPxGridView2_BeforeGetCallbackResult(object sender, EventArgs e) { SetColumnSummary((ASPxGridView)sender, "UnitPrice"); } protected void ASPxGridView2_BeforePerformDataSelect(object sender, EventArgs e) { Session["CategoryID"] = (sender as ASPxGridView).GetMasterRowKeyValue(); } protected void ASPxGridView2_DataBound(object sender, EventArgs e) { SetColumnSummary((ASPxGridView)sender, "UnitPrice"); } </code></pre>
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1. POCalculate SubTotal in Devexpress Gridview
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.