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AxisBase.QualitativeScaleComparer Property
Gets or sets the comparer used to compare deferred-axis qualitative scale values.
Namespace : DevExpress.Xpf.Charts
Assembly :
DevExpress.Xpf.Charts.v24.2.dll
NuGet Package :
DevExpress.Wpf.Charts
# Declaration
[Browsable(false) ]
public IComparer QualitativeScaleComparer { get ; set ; }
<Browsable(False )>
Public Property QualitativeScaleComparer As IComparer
# Property Value
# Example
To implement a custom qualitative scale values sort order, assign an object of a class implementing the IComparer interface to the AxisBase.QualitativeScaleComparer
property.
<dxc:XYDiagram2D.AxisX >
<dxc:AxisX2D >
<dxc:AxisX2D.QualitativeScaleComparer >
<local:NumberComparer />
</dxc:AxisX2D.QualitativeScaleComparer >
</dxc:AxisX2D >
</dxc:XYDiagram2D.AxisX >
using System ;
using System.Collections ;
namespace CustomSortOrder {
class NumberComparer : IComparer {
public int Compare (object x, object y ) {
int iX = NumberConverter.ToInt(x);
int iY = NumberConverter.ToInt(y);
return iX - iY;
}
}
class NumberConverter {
public static int ToInt (object o ) {
string stringNumber = o as string ;
int number = 0 ;
if (stringNumber == null ) return -1 ;
if (Int32.TryParse(stringNumber, out number))
return number;
switch (stringNumber.ToLower()) {
case "one" : return 1 ;
case "two" : return 2 ;
case "three" : return 3 ;
}
return number;
}
}
}
Imports System
Imports System.Collections
Namespace CustomSortOrder
Friend Class NumberComparer
Implements IComparer
Public Function Compare (ByVal x As Object , ByVal y As Object ) As Integer Implements IComparer.Compare
Dim iX As Integer = NumberConverter.ToInt(x)
Dim iY As Integer = NumberConverter.ToInt(y)
Return iX - iY
End Function
End Class
Friend Class NumberConverter
Public Shared Function ToInt(ByVal o As Object ) As Integer
Dim stringNumber As String = TryCast (o, String )
Dim number As Integer = 0
If stringNumber Is Nothing Then
Return -1
End If
If Int32.TryParse(stringNumber, number) Then
Return number
End If
Select Case stringNumber.ToLower()
Case "one"
Return 1
Case "two"
Return 2
Case "three"
Return 3
End Select
Return number
End Function
End Class
End Namespace
See Also