Syncfusion.XlsIO.Base
Example 


Item Property (IChartTrendLines)

Gets single trend line by index. Read-only.
Syntax
'Declaration
 
ReadOnly Default Property Item( _
   ByVal iIndex As Integer _
) As IChartTrendLine
'Usage
 
Dim instance As IChartTrendLines
Dim iIndex As Integer
Dim value As IChartTrendLine
 
value = instance.Item(iIndex)
IChartTrendLine this[ 
   int iIndex
]; {get;}

Parameters

iIndex
Example
The following code illustrates how to access IChartTrendLine from the IChartTrendLines collection.
using Syncfusion.XlsIO;   
            
class Program
{
    static void Main(string[] args)
    {
        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];
            
            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";
            sheet.Range["A3"].Value = "15";
            sheet.Range["B3"].Value = "25";
            sheet.Range["C3"].Value = "35";
            
            //Create chart
            IChart chart = sheet.Charts.Add();
            
            //Set range
            chart.DataRange = sheet.Range["A1:C3"];
            
            //Set chart type
            chart.ChartType = ExcelChartType.Column_Clustered;
            
            //Get chart serie
            IChartSerie serie = chart.Series[0];
            
            //Get chart serie trendlines collection
            IChartTrendLines trendLines = serie.TrendLines;
            
            //Add trendlines
            trendLines.Add(ExcelTrendLineType.Logarithmic);
            trendLines.Add(ExcelTrendLineType.Linear);
            
            //Accessing the first trendline from collection
            IChartTrendLine trendline = trendLines[0];
            
            //Set trendline Name
            trendline.Name = "TrendLine 1";
            
            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
        }
    }
}
AssemblyVersion

Syncfusion.XlsIO.Base: 17.2460.0.34

See Also