Spread for ASP.NET 9.0 Product Documentation
DataField Property (DoubleCollection)
Example 


Gets or sets the field in the data source that supplies the double values.
Syntax
'Declaration
 
Public Property DataField As String
'Usage
 
Dim instance As DoubleCollection
Dim value As String
 
instance.DataField = value
 
value = instance.DataField
public string DataField {get; set;}
Exceptions
ExceptionDescription
System.ArgumentNullException value is a null reference (Nothing in VB).
Example
This example sets the DataField property.
System.Data.DataTable dt = new System.Data.DataTable("Test");
System.Data.DataRow dr = default(System.Data.DataRow);
dt.Columns.Add("Series0");
dt.Columns.Add("Series1");
dr = dt.NewRow();
dr[0] = 2;
dr[1] = 1;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 4;
dr[1] = 2;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 3;
dr[1] = 4;

FarPoint.Web.Chart.BarSeries series = new FarPoint.Web.Chart.BarSeries();
series.Values.DataSource = dt;
series.Values.DataField = dt.Columns[0].ColumnName;
FarPoint.Web.Chart.YPlotArea plotArea = new FarPoint.Web.Chart.YPlotArea();
FarPoint.Web.Chart.ChartModel model = new FarPoint.Web.Chart.ChartModel();
plotArea.Location = new System.Drawing.PointF(0.2F, 0.2F);
plotArea.Size = new System.Drawing.SizeF(0.6F, 0.6F);
plotArea.Series.Add(series);
model.PlotAreas.Add(plotArea);
FarPoint.Web.Spread.Chart.SpreadChart chart = new FarPoint.Web.Spread.Chart.SpreadChart();
chart.Model = model;
FpSpread1.Sheets[0].Charts.Add(chart);
Dim dt As New System.Data.DataTable("Test")
Dim dr As System.Data.DataRow
dt.Columns.Add("Series0")
dt.Columns.Add("Series1")
dr = dt.NewRow()
dr(0) = 2
dr(1) = 1
dt.Rows.Add(dr)

dr = dt.NewRow()
dr(0) = 4
dr(1) = 2
dt.Rows.Add(dr)

dr = dt.NewRow()
dr(0) = 3
dr(1) = 4
dt.Rows.Add(dr)

Dim series As New FarPoint.Web.Chart.BarSeries
series.Values.DataSource = dt
series.Values.DataField = dt.Columns(0).ColumnName
Dim model As New FarPoint.Web.Chart.ChartModel()
Dim plotArea As New FarPoint.Web.Chart.YPlotArea()
plotArea.Location = New System.Drawing.PointF(0.2F, 0.2F)
plotArea.Size = New System.Drawing.SizeF(0.6F, 0.6F)
plotArea.Series.Add(series)
model.PlotAreas.Add(plotArea)
Dim chart As New FarPoint.Web.Spread.Chart.SpreadChart()
chart.Model = model
FpSpread1.Sheets(0).Charts.Add(chart)
Requirements

Target Platforms: Windows 7, Windows 8, Windows 10, Windows Vista, Windows Server 2003, Windows Server 2008, Windows Server 2012, Windows XP Professional

See Also

Reference

DoubleCollection Class
DoubleCollection Members

 

 


Copyright © GrapeCity, inc. All rights reserved.