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ChartSheetBase.GetChartElement(Int32, Int32, Int32, Int32, Int32) Method

Definition

Gets information about the chart element at specified X and Y coordinates.

public:
 void GetChartElement(int x, int y, int % elementID, int % arg1, int % arg2);
public void GetChartElement (int x, int y, ref int elementID, ref int arg1, ref int arg2);
member this.GetChartElement : int * int * int * int * int -> unit
Public Sub GetChartElement (x As Integer, y As Integer, ByRef elementID As Integer, ByRef arg1 As Integer, ByRef arg2 As Integer)

Parameters

x
Int32

The X coordinate of the chart element.

y
Int32

The Y coordinate of the chart element.

elementID
Int32

When the method returns, this argument contains the XlChartItem value of the chart element at the specified coordinates. For more information, see the "Remarks" section.

arg1
Int32

When the method returns, this argument contains information related to the chart element. For more information, see the "Remarks" section.

arg2
Int32

When the method returns, this argument contains information related to the chart element. For more information, see the "Remarks" section.

Examples

The following code example uses the GetChartElement method to display the chart element when a user clicks the chart.

private void DisplayChartElement()
{
    Globals.Sheet1.Range["A1", "A5"].Value2 = 22;
    Globals.Sheet1.Range["B1", "B5"].Value2 = 55;

    this.SetSourceData(Globals.Sheet1.Range["A1", "B5"],
        Excel.XlRowCol.xlColumns);
    this.ChartType = Excel.XlChartType.xlColumnClustered;

    this.MouseDown +=
        new Excel.ChartEvents_MouseDownEventHandler(ChartSheet_MouseDown);
}

void ChartSheet_MouseDown(int Button, int Shift, int x, int y)
{
    Int32 elementID = 0;
    Int32 arg1 = 0;
    Int32 arg2 = 0;

    this.GetChartElement(x, y, ref elementID, ref arg1, ref arg2);

    MessageBox.Show("Chart element is: " + ((Excel.XlChartItem)elementID).ToString()
        + "\n arg1 is: " + arg1.ToString() + "\n arg2 is: " + arg2.ToString());
}
Private Sub DisplayChartElement()
    Globals.Sheet1.Range("A1", "A5").Value2 = 22
    Globals.Sheet1.Range("B1", "B5").Value2 = 55

    Me.SetSourceData(Globals.Sheet1.Range("A1", "B5"), _
        Excel.XlRowCol.xlColumns)
    Me.ChartType = Excel.XlChartType.xlColumnClustered
End Sub

Sub ChartSheet_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, _
    ByVal x As Integer, ByVal y As Integer) Handles Me.MouseDown

    Dim elementID As Integer = 0
    Dim arg1 As Integer = 0
    Dim arg2 As Integer = 0

    Me.GetChartElement(x, y, elementID, arg1, arg2)

    MsgBox("Chart element is: " & CType(elementID, Excel.XlChartItem).ToString() _
            & Constants.vbNewLine & "arg1 is: " & arg1.ToString() _
            & Constants.vbNewLine & "arg2 is: " & arg2.ToString())
End Sub

Remarks

This method is unusual in that you specify values for only the first two arguments. Microsoft Office Excel fills in the other arguments, and your code should examine those values when the method returns.

The value of ElementID after the method returns determines whether Arg1 and Arg2 contain any information, as shown in the following table.

ElementID Arg1 Arg2
xlAxis AxisIndex AxisType
xlAxisTitle AxisIndex AxisType
xlDisplayUnitLabel AxisIndex AxisType
xlMajorGridlines AxisIndex AxisType
xlMinorGridlines AxisIndex AxisType
xlPivotChartDropZone DropZoneType None
xlPivotChartFieldButton DropZoneType PivotFieldIndex
xlDownBars GroupIndex None
xlDropLines GroupIndex None
xlHiLoLines GroupIndex None
xlRadarAxisLabels GroupIndex None
xlSeriesLines GroupIndex None
xlUpBars GroupIndex None
xlChartArea None None
xlChartTitle None None
xlCorners None None
xlDataTable None None
xlFloor None None
xlLeaderLines None None
xlLegend None None
xlNothing None None
xlPlotArea None None
xlWalls None None
xlDataLabel SeriesIndex PointIndex
xlErrorBars SeriesIndex None
xlLegendEntry SeriesIndex None
xlLegendKey SeriesIndex None
xlSeries SeriesIndex PointIndex
xlShape ShapeIndex None
xlTrendline SeriesIndex TrendLineIndex
xlXErrorBars SeriesIndex None
xlYErrorBars SeriesIndex None

The following table describes the meaning of Arg1 and Arg2 after the method returns.

Argument Description
AxisIndex Specifies whether the axis is primary or secondary. Can be one of the following XlAxisGroup constants: xlPrimary or xlSecondary.
AxisType Specifies the axis type. Can be one of the following XlAxisType constants: xlCategory, xlSeriesAxis, or xlValue.
DropZoneType Specifies the drop zone type: column, data, page, or row field. Can be one of the following XlPivotFieldOrientation constants: xlColumnField, xlDataField, xlPageField, or xlRowField. The column and row field constants specify the series and category fields, respectively.
GroupIndex Specifies the offset within the Microsoft.Office.Interop.Excel.ChartGroups collection for a specific chart group.
PivotFieldIndex Specifies the offset within the T:Microsoft.Office.Interop.Excel.PivotFields collection for a specific column (series), data, page, or row (category) field. -1 if the drop zone type is xlDataField.
PointIndex Specifies the offset within the Points collection for a specific point within a series. A value of – 1 indicates that all data points are selected.
SeriesIndex Specifies the offset within the Series collection for a specific series.
ShapeIndex Specifies the offset within the Shapes collection for a specific shape.
TrendlineIndex Specifies the offset within the Trendlines collection for a specific trendline within a series.

Applies to