/// <summary>
/// Add a new trendline
/// </summary>
/// <param name="Type"></param>
/// <returns>The trendline</returns>
public ExcelChartTrendline Add(eTrendLine Type)
{
if (_serie == null ||
_serie._chart.IsType3D() ||
_serie._chart.IsTypePercentStacked() ||
_serie._chart.IsTypeStacked() ||
_serie._chart.IsTypePieDoughnut())
{
throw(new ArgumentException("Type", "Trendlines don't apply to 3d-charts, stacked charts, pie charts, doughnut charts or Excel 2016 chart types"));
}
ExcelChartTrendline tl;
XmlNode insertAfter;
if (_list.Count > 0)
{
insertAfter = _list[_list.Count - 1].TopNode;
}
else
{
insertAfter = _serie.TopNode.SelectSingleNode("c:marker", _serie.NameSpaceManager);
if (insertAfter == null)
{
insertAfter = _serie.TopNode.SelectSingleNode("c:tx", _serie.NameSpaceManager);
if (insertAfter == null)
{
insertAfter = _serie.TopNode.SelectSingleNode("c:order", _serie.NameSpaceManager);
}
}
}
var node = _serie.TopNode.OwnerDocument.CreateElement("c", "trendline", ExcelPackage.schemaChart);
_serie.TopNode.InsertAfter(node, insertAfter);
node.InnerXml = "<c:trendlineLbl><c:numFmt sourceLinked=\"0\" formatCode=\"General\"/><c:spPr><a:noFill/><a:ln><a:noFill/></a:ln><a:effectLst/></c:spPr><c:txPr><a:bodyPr anchorCtr=\"1\" anchor=\"ctr\" wrap=\"square\" vert=\"horz\" vertOverflow=\"ellipsis\" spcFirstLastPara=\"1\" rot=\"0\"/><a:lstStyle/><a:p><a:pPr><a:defRPr baseline=\"0\" kern=\"1200\" strike=\"noStrike\" u=\"none\" i=\"0\" b=\"0\" sz=\"900\"><a:solidFill><a:schemeClr val=\"tx1\"><a:lumMod val=\"65000\"/><a:lumOff val=\"35000\"/></a:schemeClr></a:solidFill><a:latin typeface=\"+mn-lt\"/><a:ea typeface=\"+mn-ea\"/><a:cs typeface=\"+mn-cs\"/></a:defRPr></a:pPr><a:endParaRPr/></a:p></c:txPr></c:trendlineLbl>";
tl = new ExcelChartTrendline(_serie.NameSpaceManager, node, _serie);
tl.Type = Type;
_serie._chart.ApplyStyleOnPart(tl, _serie._chart.StyleManager?.Style?.Trendline);
_serie._chart.ApplyStyleOnPart(tl.Label, _serie._chart.StyleManager?.Style?.TrendlineLabel);
_list.Add(tl);
return(tl);
}
/// <summary>
/// Add a new trendline
/// </summary>
/// <param name="Type"></param>
/// <returns>The trendline</returns>
public ExcelChartTrendline Add(eTrendLine Type)
{
if (_serie._chart.IsType3D() ||
_serie._chart.IsTypePercentStacked() ||
_serie._chart.IsTypeStacked() ||
_serie._chart.IsTypePieDoughnut())
{
throw(new ArgumentException("Type", "Trendlines don't apply to 3d-charts, stacked charts, pie charts or doughnut charts"));
}
ExcelChartTrendline tl;
XmlNode insertAfter;
if (_list.Count > 0)
{
insertAfter = _list[_list.Count - 1].TopNode;
}
else
{
insertAfter = _serie.TopNode.SelectSingleNode("c:marker", _serie.NameSpaceManager);
if (insertAfter == null)
{
insertAfter = _serie.TopNode.SelectSingleNode("c:tx", _serie.NameSpaceManager);
if (insertAfter == null)
{
insertAfter = _serie.TopNode.SelectSingleNode("c:order", _serie.NameSpaceManager);
}
}
}
var node = _serie.TopNode.OwnerDocument.CreateElement("c", "trendline", ExcelPackage.schemaChart);
_serie.TopNode.InsertAfter(node, insertAfter);
tl = new ExcelChartTrendline(_serie.NameSpaceManager, node, _serie);
tl.Type = Type;
_list.Add(tl);
return(tl);
}
