private void GenerateGroupSummary(GridViewGroup g, GridViewRow row)
{
int colIndex;
object colValue;
if (!HasAutoSummary(g.Summaries) && !HasSupressGroup())
{
return;
}
// Inserts a new row
GridViewRow newRow = InsertGridRow(row, g);
foreach (GridViewSummary s in g.Summaries)
{
if (s.Automatic)
{
colIndex = GetVisibleColumnIndex(s.Column);
colIndex = ResolveCellIndex(newRow, colIndex);
newRow.Cells[colIndex].Text = this.GetFormatedString(s.FormatString, this.GetColumnFormat(GetColumnIndex(s.Column)), s.Value);
}
}
// If it is a supress group must set the grouped values in the cells
// of the inserted row
if (g.IsSupressGroup)
{
for (int i = 0; i < g.Columns.Length; i++)
{
colValue = g.ActualValues[i];
if (colValue != null)
{
colIndex = GetVisibleColumnIndex(g.Columns[i]);
colIndex = ResolveCellIndex(newRow, colIndex);
newRow.Cells[colIndex].Text = colValue.ToString();
}
}
}
// Triggers event GroupSummary
if (GroupSummary != null)
{
GroupSummary(g.Name, g.ActualValues, newRow);
}
}
public GridViewSummary RegisterSummary(string column, SummaryOperation operation, string groupName)
{
if (operation == SummaryOperation.Custom)
{
throw new Exception(USE_ADEQUATE_METHOD_TO_REGISTER_THE_SUMMARY);
}
GridViewGroup group = FindGroupByName(groupName);
if (group == null)
{
throw new Exception(String.Format(GROUP_NOT_FOUND, groupName));
}
// TO DO: Perform column validation...
GridViewSummary s = new GridViewSummary(column, operation, group);
group.AddSummary(s);
return(s);
}
private bool ColumnHasSummary(string column, GridViewGroup g)
{
List <GridViewSummary> list;
if (g == null)
{
list = this.mGeneralSummaries;
}
else
{
list = g.Summaries;
}
foreach (GridViewSummary s in list)
{
if (column.ToLower() == s.Column.ToLower())
{
return(true);
}
}
return(false);
}
private bool ColumnHasSummary(int colindex, GridViewGroup g)
{
List <GridViewSummary> list;
string column = this.GetDataFieldName(mGrid.Columns[colindex]);
if (g == null)
{
list = this.mGeneralSummaries;
}
else
{
list = g.Summaries;
}
foreach (GridViewSummary s in list)
{
if (column.ToLower() == s.Column.ToLower())
{
return(true);
}
}
return(false);
}
public GridViewSummary(string col, CustomSummaryOperation op, SummaryResultMethod getResult, GridViewGroup grp)
: this(col, grp)
{
this.Operation = SummaryOperation.Custom;
this.CustomOperation = op;
this.GetSummaryMethod = getResult;
}
/// <summary>
/// Inserts a grid row. Only cells required for the summary results
/// will be created (except if GenerateAllCellsOnSummaryRow is true).
/// The group will be checked for columns with summary
/// </summary>
/// <param name="beforeRow"></param>
/// <param name="g"></param>
/// <returns></returns>
private GridViewRow InsertGridRow(GridViewRow beforeRow, GridViewGroup g)
{
int colspan;
TableCell cell;
TableCell[] tcArray;
int visibleColumns = this.GetVisibleColumnCount();
Table tbl = (Table)mGrid.Controls[0];
int newRowIndex = tbl.Rows.GetRowIndex(beforeRow);
GridViewRow newRow = new GridViewRow(newRowIndex, newRowIndex, DataControlRowType.DataRow, DataControlRowState.Normal);
if (g != null && (g.IsSupressGroup || g.GenerateAllCellsOnSummaryRow))
{
// Create all the table cells
tcArray = new TableCell[visibleColumns];
for (int i = 0; i < visibleColumns; i++)
{
cell = new TableCell();
cell.ApplyStyle(mGrid.Columns[GetRealIndexFromVisibleColumnIndex(i)].ItemStyle);
cell.Text = " ";
tcArray[i] = cell;
}
}
else
{
// Create only the required table cells
colspan = 0;
List <TableCell> tcc = new List <TableCell>();
for (int i = 0; i < mGrid.Columns.Count; i++)
{
if (ColumnHasSummary(i, g))
{
if (colspan > 0)
{
cell = new TableCell();
cell.Text = " ";
cell.ColumnSpan = colspan;
tcc.Add(cell);
colspan = 0;
}
// insert table cell and copy the style
cell = new TableCell();
cell.ApplyStyle(mGrid.Columns[i].ItemStyle);
tcc.Add(cell);
}
else if (mGrid.Columns[i].Visible)
{
// A visible column that will have no cell because has
// no summary. So we increase the colspan...
colspan++;
}
}
if (colspan > 0)
{
cell = new TableCell();
cell.Text = " ";
cell.ColumnSpan = colspan;
tcc.Add(cell);
colspan = 0;
}
tcArray = new TableCell[tcc.Count];
tcc.CopyTo(tcArray);
}
newRow.Cells.AddRange(tcArray);
tbl.Controls.AddAt(newRowIndex, newRow);
return(newRow);
}