如何在Excel中使用C#代码获取次轴？

我使用了这段代码，有人建议我如何使用C#在Excel图表中获取次轴吗？我是从Excel选项中手动获取的，但不是用C代码

---

我知道我有点晚了，但也许这会帮助别人

我正在尝试为我的项目在图表上做一些格式化，因此我还做了一些事情，但您可能正在寻找的部分如下：

Excel.Axis verticalAxisSecondary = (Excel.Axis)chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary);

只有一个来之不易的信息：在为次轴分配了一些数据后，再对其进行设置和格式化，否则您将很难找到它一直崩溃的原因。是的，我觉得很难：——）

---

作为旁注，如果您感兴趣，我的全部代码如下：

private static void FormatChart(Excel.Chart chart, string secondaryAxisTitle = null) {
    Excel.Axis horizontalAxis = null;
    Excel.AxisTitle horizontalAxisTitle = null;
    Excel.Axis verticalAxisPrimary = null;
    Excel.AxisTitle verticalAxisPrimaryTitle = null;
    Excel.Axis verticalAxisSecondary = null;
    Excel.AxisTitle verticalAxisSecondaryTitle = null;
    Excel.ChartTitle chartTitle = null;

    try {
        chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementPrimaryCategoryAxisTitleAdjacentToAxis);
        horizontalAxis = chart.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary);
        horizontalAxis.HasTitle = true;
        horizontalAxisTitle = horizontalAxis.AxisTitle;
        horizontalAxisTitle.Text = "Date and Time";
        horizontalAxis.HasMajorGridlines = true;

        chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementPrimaryValueAxisTitleAdjacentToAxis);
        verticalAxisPrimary = chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlPrimary);
        verticalAxisPrimary.HasTitle = true;
        verticalAxisPrimaryTitle = verticalAxisPrimary.AxisTitle;
        verticalAxisPrimaryTitle.Text = "Power [MW]";

        verticalAxisPrimary.CrossesAt = -1E+39; //Just move horizontal axis all way down to the bottom of the graph.

        if (!string.IsNullOrWhiteSpace(secondaryAxisTitle)) {
            chart.HasAxis[Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary] = true;
            chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementSecondaryValueAxisTitleAdjacentToAxis);
            verticalAxisSecondary = (Excel.Axis)chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary);
            verticalAxisSecondary.HasTitle = true;
            verticalAxisSecondaryTitle = verticalAxisSecondary.AxisTitle;
            verticalAxisSecondaryTitle.Text = secondaryAxisTitle;
        }
        if (chart.HasTitle) {
            chartTitle = chart.ChartTitle;
            chartTitle.Delete();
        }
    } finally {
        if (horizontalAxis != null) {
            Marshal.ReleaseComObject(horizontalAxis);
        }
        if (horizontalAxisTitle != null) {
            Marshal.ReleaseComObject(horizontalAxisTitle);
        }
        if (verticalAxisPrimary != null) {
            Marshal.ReleaseComObject(verticalAxisPrimary);
        }
        if (verticalAxisPrimaryTitle != null) {
            Marshal.ReleaseComObject(verticalAxisPrimaryTitle);
        }
        if (verticalAxisSecondary != null) {
            Marshal.ReleaseComObject(verticalAxisSecondary);
        }
        if (verticalAxisSecondaryTitle != null) {
            Marshal.ReleaseComObject(verticalAxisSecondaryTitle);
        }
        if (chartTitle != null) {
            Marshal.ReleaseComObject(chartTitle);
        }
    }
}

---

我知道我有点晚了，但也许这会帮助别人

我正在尝试为我的项目在图表上做一些格式化，因此我还做了一些事情，但您可能正在寻找的部分如下：

Excel.Axis verticalAxisSecondary = (Excel.Axis)chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary);

只有一个来之不易的信息：在为次轴分配了一些数据后，再对其进行设置和格式化，否则您将很难找到它一直崩溃的原因。是的，我觉得很难：——）

---

作为旁注，如果您感兴趣，我的全部代码如下：

private static void FormatChart(Excel.Chart chart, string secondaryAxisTitle = null) {
    Excel.Axis horizontalAxis = null;
    Excel.AxisTitle horizontalAxisTitle = null;
    Excel.Axis verticalAxisPrimary = null;
    Excel.AxisTitle verticalAxisPrimaryTitle = null;
    Excel.Axis verticalAxisSecondary = null;
    Excel.AxisTitle verticalAxisSecondaryTitle = null;
    Excel.ChartTitle chartTitle = null;

    try {
        chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementPrimaryCategoryAxisTitleAdjacentToAxis);
        horizontalAxis = chart.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary);
        horizontalAxis.HasTitle = true;
        horizontalAxisTitle = horizontalAxis.AxisTitle;
        horizontalAxisTitle.Text = "Date and Time";
        horizontalAxis.HasMajorGridlines = true;

        chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementPrimaryValueAxisTitleAdjacentToAxis);
        verticalAxisPrimary = chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlPrimary);
        verticalAxisPrimary.HasTitle = true;
        verticalAxisPrimaryTitle = verticalAxisPrimary.AxisTitle;
        verticalAxisPrimaryTitle.Text = "Power [MW]";

        verticalAxisPrimary.CrossesAt = -1E+39; //Just move horizontal axis all way down to the bottom of the graph.

        if (!string.IsNullOrWhiteSpace(secondaryAxisTitle)) {
            chart.HasAxis[Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary] = true;
            chart.SetElement(Microsoft.Office.Core.MsoChartElementType.msoElementSecondaryValueAxisTitleAdjacentToAxis);
            verticalAxisSecondary = (Excel.Axis)chart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlSecondary);
            verticalAxisSecondary.HasTitle = true;
            verticalAxisSecondaryTitle = verticalAxisSecondary.AxisTitle;
            verticalAxisSecondaryTitle.Text = secondaryAxisTitle;
        }
        if (chart.HasTitle) {
            chartTitle = chart.ChartTitle;
            chartTitle.Delete();
        }
    } finally {
        if (horizontalAxis != null) {
            Marshal.ReleaseComObject(horizontalAxis);
        }
        if (horizontalAxisTitle != null) {
            Marshal.ReleaseComObject(horizontalAxisTitle);
        }
        if (verticalAxisPrimary != null) {
            Marshal.ReleaseComObject(verticalAxisPrimary);
        }
        if (verticalAxisPrimaryTitle != null) {
            Marshal.ReleaseComObject(verticalAxisPrimaryTitle);
        }
        if (verticalAxisSecondary != null) {
            Marshal.ReleaseComObject(verticalAxisSecondary);
        }
        if (verticalAxisSecondaryTitle != null) {
            Marshal.ReleaseComObject(verticalAxisSecondaryTitle);
        }
        if (chartTitle != null) {
            Marshal.ReleaseComObject(chartTitle);
        }
    }
}