ChartControl.ValidateDataMembers Property

Specifies whether to validate data members.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v25.1.UI.dll

NuGet Package: DevExpress.Win.Charts

Declaration

C#

public bool ValidateDataMembers { get; set; }

VB.NET

Public Property ValidateDataMembers As Boolean

Property Value

Type	Description
Boolean	true if data members should be validated; otherwise, false. The default value is true.

Remarks

C#

ChartControl chart = new ChartControl();
chart.ValidateDataMembers = true;  

VB.NET

Dim chart As ChartControl = New ChartControl()
chart.ValidateDataMembers = True

When the ValidateDataMembers property is set to true, the Chart Control verifies whether data member fields exist in the data source. The following property values pass this validation:

• SeriesBase.ArgumentDataMember
• SeriesBase.ColorDataMember
• SeriesBase.ToolTipHintDataMember
• SeriesBase.ValueDataMembers
• SeriesDataSourceColorizer.SeriesColorMember
• SeriesDataSourceColorizer.SeriesKeyMember

If a field does not exist in the data source, the System.ArgumentException is thrown with the following message: “The data source does not contain a data member with the <field_name>.”

When the ValidateDataMembers property is set to false, the Chart displays available data source values.