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How to calulate sum of all the columns in the GridSummaryColumnDescriptor collection of a GridSummaryRowDescriptor while on that row.

Thread ID:





52582 Nov 30,2006 10:21 AM Dec 5,2006 04:33 AM Windows Forms 1
Tags: Grouping
James Blibo
Asked On November 30, 2006 10:21 AM

I have two summary rows define as follows...

GridSummaryColumnDescriptor[] QtySummaryColumns = new GridSummaryColumnDescriptor[SummaryColumnNames.Count];
GridSummaryColumnDescriptor[] DollarSummaryColumns = new GridSummaryColumnDescriptor[SummaryColumnNames.Count];

for (int i = 0; i < SummaryColumnNames.Count; i++)
string columnName = SummaryColumnNames[i];
QtySummaryColumns[i] = new GridSummaryColumnDescriptor(string.Format("_Qty{0}{1}", columnName, i), SummaryType.DoubleAggregate, columnName, "{Sum:#,###;(#,###);0}");
DollarSummaryColumns[i] = new GridSummaryColumnDescriptor(string.Format("_Qty{0}{1}", i), SummaryType.Custom, columnName, "{Total:#,###.00;(#,###.00);0.00}");

//summary row -> quantity
rowDescriptor = new GridSummaryRowDescriptor("QtySummaryRow", QtySummaryColumns);

//summary row -> dollars
rowDescriptor = new GridSummaryRowDescriptor("DollarSummaryRow", DollarSummaryColumns);

What I want to do is to show the sum of all the summarycolumn in a cell on the same summary row. I want to add another summary column to the summarycolumndescriptor collection as the first summary column to each summary row that will perform a sum ACROSS all the columns in the QtySummaryColumns
GridSummaryColumnDescriptor and do the same for the DollarSummaryColumns.

Is this possible?

Should I just have an SummaryEmptyCell and manually populate that cell with the calculated value using the QueryCellStyleInfo event? How would I accomplish this?

Administrator [Syncfusion]
Replied On December 5, 2006 04:33 AM

Hi James,

This can be achieved by handling the QueryCellStyleInfo event and set the value of SummaryEmptyCell text to sum of the all summary value present in a summary row. You can use the GetSummaries method to get all updated summaries in a GridGroup. Here is a code snippet to show this.

private void gridGroupingControl1_QueryCellStyleInfo(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableCellStyleInfoEventArgs e)
if( e.TableCellIdentity.TableCellType == GridTableCellType.SummaryEmptyCell )
Element el = e.TableCellIdentity.DisplayElement;
GridTable table = e.TableCellIdentity.Table;
GridSummaryRow row = e.TableCellIdentity.DisplayElement as GridSummaryRow;
GridSummaryRowDescriptor summaryRowDescriptor = row.SummaryRowDescriptor;
int sum = 0;
foreach( ISummary summary in el.ParentGroup.GetSummaries(table))
Int32AggregateSummary Int32summary = summary as Int32AggregateSummary;
if( Int32summary != null)
sum += Int32summary.Sum ;
e.Style.Text = sum.ToString() ;
e.Style.BackColor = Color.DeepPink;

Here is a sample.

Best Regards,


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