Interface IOfficeChartTrendLines

Interface that represents trend line collection.

Namespace: Syncfusion.OfficeChart
Assembly: Syncfusion.OfficeChart.UWP.dll
Syntax
public interface IOfficeChartTrendLines

Properties

Count

Gets the number of IOfficeChartTrendLineobjects in the collection.Read-only.

Declaration
int Count { get; }
Property Value
Type
System.Int32
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
serieFeb.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Get the count of the trendline
int count = serieFeb.TrendLines.Count;
//Get the trendline instance from collection
IOfficeChartTrendLine trendline = serieFeb.TrendLines[0];
//Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide;
trendline.Border.LineColor = System.Drawing.Color.Blue;
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
serieFeb.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Get the count of the trendline
Dim count As Integer = serieFeb.TrendLines.Count
'Get the trendline instance from collection
Dim trendline As IOfficeChartTrendLine = serieFeb.TrendLines(0)
'Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide
trendline.Border.LineColor = System.Drawing.Color.Blue
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

Item[Int32]

Gets a single IOfficeChartTrendLine instance at the specified index from the collection. Read-only.

Declaration
IOfficeChartTrendLine this[int iIndex] { get; }
Parameters
Type Name Description
System.Int32 iIndex

The zero-based index of the element.
Property Value
Type Description
IOfficeChartTrendLine

Returns the particular trend line based on the index.
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
serieFeb.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Get the count of the trendline
int count = serieFeb.TrendLines.Count;
//Get the trendline instance from collection
IOfficeChartTrendLine trendline = serieFeb.TrendLines[0];
//Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide;
trendline.Border.LineColor = System.Drawing.Color.Blue;
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
serieFeb.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Get the count of the trendline
Dim count As Integer = serieFeb.TrendLines.Count
'Get the trendline instance from collection
Dim trendline As IOfficeChartTrendLine = serieFeb.TrendLines(0)
'Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide
trendline.Border.LineColor = System.Drawing.Color.Blue
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

Methods

Add()

Adds new instance of trend line to collection.

Declaration
IOfficeChartTrendLine Add()
Returns
Type Description
IOfficeChartTrendLine

Returns added trend line object.
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Set the trendline color and weight
serieFeb.TrendLines[0].Border.LineWeight = OfficeChartLineWeight.Wide;
serieFeb.TrendLines[0].Border.LineColor = System.Drawing.Color.Blue;
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Set the trendline color and weight
serieFeb.TrendLines(0).Border.LineWeight = OfficeChartLineWeight.Wide
serieFeb.TrendLines(0).Border.LineColor = System.Drawing.Color.Blue
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

Add(OfficeTrendLineType)

Adds new instance of trend line to collection with specified type of trend line.

Declaration
IOfficeChartTrendLine Add(OfficeTrendLineType type)
Parameters
Type Name Description
OfficeTrendLineType type

Represents type of trend line.
Returns
Type Description
IOfficeChartTrendLine

Returns added trend line object.
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Set the trendline color and weight
serieFeb.TrendLines[0].Border.LineWeight = OfficeChartLineWeight.Wide;
serieFeb.TrendLines[0].Border.LineColor = System.Drawing.Color.Blue;
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Set the trendline color and weight
serieFeb.TrendLines(0).Border.LineWeight = OfficeChartLineWeight.Wide
serieFeb.TrendLines(0).Border.LineColor = System.Drawing.Color.Blue
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

Clear()

Clears trend line collection.

Declaration
void Clear()
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
serieFeb.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Get the count of the trendline
int count = serieFeb.TrendLines.Count;
//Get the trendline instance from collection
IOfficeChartTrendLine trendline = serieFeb.TrendLines[0];
//Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide;
trendline.Border.LineColor = System.Drawing.Color.Blue;
//Clear the trendlines in serie
serieFeb.TrendLines.Clear();
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
serieFeb.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Get the count of the trendline
Dim count As Integer = serieFeb.TrendLines.Count
'Get the trendline instance from collection
Dim trendline As IOfficeChartTrendLine = serieFeb.TrendLines(0)
'Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide
trendline.Border.LineColor = System.Drawing.Color.Blue
'Clear the trendlines in serie
serieFeb.TrendLines.Clear()
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

RemoveAt(Int32)

Removes trend line object at the specified index from the collection.

Declaration
void RemoveAt(int index)
Parameters
Type Name Description
System.Int32 index

Represents
Examples
//Create a presentation instance
IPresentation presentation = Presentation.Create();
//Add a blank slide to the presentation
ISlide slide = presentation.Slides.Add(SlideLayoutType.Blank);
//Add chart to the slide with position and size
IPresentationChart chart = slide.Charts.AddChart(100, 10, 700, 500);
//Specify the chart title
chart.ChartTitle = "Sales Analysis";
//Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered;
//Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan");
chart.ChartData.SetValue(1, 3, "Feb");
chart.ChartData.SetValue(1, 4, "March");
//Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010");
chart.ChartData.SetValue(2, 2, "60");
chart.ChartData.SetValue(2, 3, "70");
chart.ChartData.SetValue(2, 4, "80");
//Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011");
chart.ChartData.SetValue(3, 2, "80");
chart.ChartData.SetValue(3, 3, "70");
chart.ChartData.SetValue(3, 4, "60");
//Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012");
chart.ChartData.SetValue(4, 2, "60");
chart.ChartData.SetValue(4, 3, "70");
chart.ChartData.SetValue(4, 4, "80");
//Create a new chart series with the name
IOfficeChartSerie serieJan = chart.Series.Add("Jan");
//Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData[2, 2, 4, 2];
//Create a new chart series with the name
IOfficeChartSerie serieFeb = chart.Series.Add("Feb");
//Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData[2, 3, 4, 3];
//Add trendline to the serie
serieJan.TrendLines.Add();
serieFeb.TrendLines.Add();
//Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average);
//Get the count of the trendline
int count = serieFeb.TrendLines.Count;
//Get the trendline instance from collection
IOfficeChartTrendLine trendline = serieFeb.TrendLines[0];
//Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide;
trendline.Border.LineColor = System.Drawing.Color.Blue;
//Remove a trendline object using index
serieFeb.TrendLines.RemoveAt(1);
//Save the presentation
presentation.Save("Output.pptx");
//Close the presentation
presentation.Close();
'Create a presentation instance
Dim presentation__1 As IPresentation = Presentation.Create()
'Add a blank slide to the presentation
Dim slide As ISlide = presentation__1.Slides.Add(SlideLayoutType.Blank)
'Add chart to the slide with position and size
Dim chart As IPresentationChart = slide.Charts.AddChart(100, 10, 700, 500)
'Specify the chart title
chart.ChartTitle = "Sales Analysis"
'Specify the chart type
chart.ChartType = OfficeChartType.Column_Clustered
'Set chart data - Row1
chart.ChartData.SetValue(1, 2, "Jan")
chart.ChartData.SetValue(1, 3, "Feb")
chart.ChartData.SetValue(1, 4, "March")
'Set chart data - Row2
chart.ChartData.SetValue(2, 1, "2010")
chart.ChartData.SetValue(2, 2, "60")
chart.ChartData.SetValue(2, 3, "70")
chart.ChartData.SetValue(2, 4, "80")
'Set chart data - Row3
chart.ChartData.SetValue(3, 1, "2011")
chart.ChartData.SetValue(3, 2, "80")
chart.ChartData.SetValue(3, 3, "70")
chart.ChartData.SetValue(3, 4, "60")
'Set chart data - Row4
chart.ChartData.SetValue(4, 1, "2012")
chart.ChartData.SetValue(4, 2, "60")
chart.ChartData.SetValue(4, 3, "70")
chart.ChartData.SetValue(4, 4, "80")
'Create a new chart series with the name
Dim serieJan As IOfficeChartSerie = chart.Series.Add("Jan")
'Set the data range of chart serie � start row, start column, end row, end column
serieJan.Values = chart.ChartData(2, 2, 4, 2)
'Create a new chart series with the name
Dim serieFeb As IOfficeChartSerie = chart.Series.Add("Feb")
'Set the data range of chart serie � start row, start column, end row, end column
serieFeb.Values = chart.ChartData(2, 3, 4, 3)
'Add trendline to the serie
serieJan.TrendLines.Add()
serieFeb.TrendLines.Add()
'Add trendline with specific type
serieFeb.TrendLines.Add(OfficeTrendLineType.Moving_Average)
'Get the count of the trendline
Dim count As Integer = serieFeb.TrendLines.Count
'Get the trendline instance from collection
Dim trendline As IOfficeChartTrendLine = serieFeb.TrendLines(0)
'Set the trendline color and weight
trendline.Border.LineWeight = OfficeChartLineWeight.Wide
trendline.Border.LineColor = System.Drawing.Color.Blue
'Remove a trendline object using index
serieFeb.TrendLines.RemoveAt(1)
'Save the presentation
presentation__1.Save("Output.pptx")
'Close the presentation
presentation__1.Close()

Extension Methods