/// <summary>
/// Modify/Add series into chart XML
/// </summary>
/// <param name="column_index">Corresponds to the column index that needs to be modified in chart spreadsheet (Ex: A, B, C, ...)</param>
/// <param name="row_index">Corresponds to the column index that needs to be modified in excel </param>
/// <param name="new_value">Corresponds to the new value we need to insert to the cell </param>
protected override void ModifyChartXML_Series(string column_index, uint row_index, string new_value)
{
LineChartSeries linechart_series = chart_part.ChartSpace.Descendants <LineChartSeries>().Where(s => string.Compare(s.InnerText, worksheet_name + "!$" + column_index + "$1", true) > 0).FirstOrDefault();
if (linechart_series != null) // There exists data on the series --> We only need to modify it
{
SeriesText st = linechart_series.Descendants <SeriesText>().FirstOrDefault();
StringReference sr = st.Descendants <StringReference>().First();
StringCache sc = sr.Descendants <StringCache>().First();
StringPoint sp = sc.Descendants <StringPoint>().First();
NumericValue nv = sp.Descendants <NumericValue>().First();
nv.Text = new_value;
}
else // No such series exists --> Consider create a new series
{
/*
* // Find location in XML to append the BarChartSeries
* Chart chart = chart_part.ChartSpace.Descendants<Chart>().FirstOrDefault();
* PlotArea plot = chart.PlotArea;
*
* // Create new BarChartSeries
* barchart_series = new BarChartSeries();
* uint index = (uint)plot.Descendants<BarChartSeries>().ToList().Count;
*
* barchart_series.Append(new Index() { Val = index });
* barchart_series.Append(new Order() { Val = index });
*
* SeriesText seriesText = new SeriesText();
* seriesText.Append(new NumericValue() { Text = new_value });
*
* barchart_series.Append(seriesText);
*
*
* // Append data
* Bar3DChart bar_3dchart = plot.Descendants<Bar3DChart>().FirstOrDefault();
* if (bar_3dchart != null) // Chart is 3D
* bar_3dchart.Append(barchart_series);
* else // Chart is not 3d
* {
* BarChart barchart = plot.Descendants<BarChart>().FirstOrDefault();
* barchart.Append(barchart_series);
* }
*
* // Append other settings
* BarChartSeries barchart_series_template = chart_part.ChartSpace.Descendants<BarChartSeries>().LastOrDefault();
*
* CategoryAxisData cateAxisData = new CategoryAxisData();
* StringReference string_ref = new StringReference();
* string_ref.Append(new DocumentFormat.OpenXml.Drawing.Charts.Formula() { Text = barchart_series.Descendants<DocumentFormat.OpenXml.Drawing.Charts.Formula>().FirstOrDefault().Text});
* StringCache string_cache = new StringCache();
* string_cache.Append(new PointCount() { Val = count });
*/
}
}
/// <summary>
/// Modify/Add categories into chart XML
/// </summary>
/// <param name="column_index">Corresponds to the column index that needs to be modified in chart spreadsheet (Ex: A, B, C, ...)</param>
/// <param name="row_index">Corresponds to the column index that needs to be modified in excel </param>
/// <param name="new_value">Corresponds to the new value we need to insert to the cell </param>
protected override void ModifyChartXML_Categories(string column_index, uint row_index, string new_value)
{
foreach (LineChartSeries linechart_series in chart_part.ChartSpace.Descendants <LineChartSeries>().ToList())
{
CategoryAxisData category_axis_data = linechart_series.Descendants <CategoryAxisData>().FirstOrDefault();
if (category_axis_data == null)
{
// If no StringReference --> Clone one from the 1st (usually we go in this when we create a new BarChartSeries)
BarChartSeries template_barchartseries = chart_part.ChartSpace.Descendants <BarChartSeries>().FirstOrDefault();
CategoryAxisData template_categoryaxisdata = template_barchartseries.Descendants <CategoryAxisData>().FirstOrDefault();
CategoryAxisData new_categoryaxisdata = new CategoryAxisData(template_categoryaxisdata.OuterXml);
linechart_series.Append(new_categoryaxisdata);
}
else
{
StringReference sr = category_axis_data.Descendants <StringReference>().FirstOrDefault();
// If there is a StringReference --> Update its values
StringCache sc = sr.Descendants <StringCache>().First();
try
{
StringPoint sp = sc.Descendants <StringPoint>().ElementAt((int)row_index - 2);
NumericValue nv = sp.Descendants <NumericValue>().First();
nv.Text = new_value;
}
catch (Exception)
{
// Create new data and append to previous XML
sc.PointCount.Val = sc.PointCount.Val + 1;
NumericValue nv = new NumericValue(new_value);
StringPoint sp = new StringPoint(nv);
sp.Index = (uint)sc.Descendants <StringPoint>().ToList().Count;
sc.Append(sp);
// Change fomula range
DocumentFormat.OpenXml.Drawing.Charts.Formula f = sr.Descendants <DocumentFormat.OpenXml.Drawing.Charts.Formula>().FirstOrDefault();
f.Text = worksheet_name + "!$A$2:$A$" + GetRowIndexByNum((int)row_index - 2).ToString();
}
}
}
}