軸ラベル形式の構成

var commonAxis = new CategoryXAxis();
var pricesAxis = new NumericYAxis();
var volumeAxis = new NumericYAxis();

commonAxis.Label = "Date:MM/dd";
// またはイベントを使用
commonAxis.FormatLabel += OnCategoryAxisFormatLabel;

pricesAxis.Label = "Price:C1";
// またはイベントを使用
pricesAxis.FormatLabel += OnPricesAxisFormatLabel;

volumeAxis.Label = "Value:#,0 K";
// またはイベントを使用
volumeAxis.FormatLabel += OnVolumeAxisFormatLabel;

// イベント ハンドラー
string OnCategoryAxisFormatLabel(AxisLabelInfo info)
{
	return string.Format("{0:MM/dd}", info.DateValue);
}

string OnPricesAxisFormatLabel(AxisLabelInfo info)
{
    return string.Format("{0:C1}", info.Value);
}

string OnVolumeAxisFormatLabel(AxisLabelInfo info)
{
    return string.Format("{0:#,0} K", info.Value);
}

Dim commonAxis As New CategoryXAxis()
Dim pricesAxis As New NumericYAxis()
Dim volumeAxis As New NumericYAxis()

commonAxis.Label = "Date:MM/dd"
' またはイベントを使用
AddHandler commonAxis.FormatLabel, AddressOf OnCategoryAxisFormatLabel

pricesAxis.Label = "Price:C1"
' またはイベントを使用
AddHandler pricesAxis.FormatLabel, AddressOf OnPricesAxisFormatLabel

volumeAxis.Label = "Value:#,0 K"
' またはイベントを使用
AddHandler volumeAxis.FormatLabel, AddressOf OnVolumeAxisFormatLabel

' イベント ハンドラー
Function OnCategoryAxisFormatLabel(info As AxisLabelInfo) As String
    Return String.Format("{0:MM/dd}", info.DateValue)
End Function

Function OnPricesAxisFormatLabel(info As AxisLabelInfo) As String
    Dim value = CType(info.Value, Double)
    Return String.Format("{0:C1}", value)
End Function

Function OnVolumeAxisFormatLabel(info As AxisLabelInfo) As String
    Dim value = info.Value
    Return String.Format("{0:#,0} K", value)
End Function