更改用 C# 创建的 Excel 图表上的轴标签 [英] Changing Axis Labels on Excel Chart created in C#

问题描述

所以我已经尝试解决这个问题有一段时间了，但似乎无处可去.我正在使用 C# 创建一个 Excel 电子表格.我的电子表格包含一个图表.除了更改 X 轴标签之外，我可以使用图表执行所有操作.我已经尝试了几乎所有我能找到的东西，但没有任何效果.

So I've been trying to figure this out for a while now but can't seem to get anywhere. I'm creating an Excel spreadsheet using C#. My spreadsheet contains a chart. I'm able to do everything with the chart EXCEPT change the X-Axis labels. I've tried just about everything that i can find but nothing works.

Excel.ChartObjects xlChart = (Excel.ChartObjects)xlWorkSheet.ChartObjects(Type.Missing);
Excel.ChartObject myChart = (Excel.ChartObject)xlChart.Add(1420, 660, 320, 180);
Excel.Chart chartPage = myChart.Chart;
chartPage.ChartType = Excel.XlChartType.xlXYScatterLines;
chartPage.HasTitle = true;
chartPage.ChartTitle.Text = "Title Text";
chartPage.HasLegend = false;

var yAxis = (Excel.Axis)chartPage.Axes(Excel.XlAxisType.xlValue,Excel.XlAxisGroup.xlPrimary);
yAxis.HasTitle = true;
yAxis.AxisTitle.Text = "Y-Axis Title text";
yAxis.MaximumScale = 20;
yAxis.AxisTitle.Orientation = Excel.XlOrientation.xlUpward;

Excel.Range Data_Range = xlWorkSheet.get_Range("A10", "C10");//Data to be plotted in chart
Excel.Range XVal_Range = xlWorkSheet.get_Range("A1", "C1");//Catagory Names I want on X-Axis as range
var x_labels = new List<string>() { "Val1", "Val2", "Val3" }; //Catagory Names I want on X-Axis as text array

Excel.SeriesCollection oSeriesCollection = (Excel.SeriesCollection)myChart.Chart.SeriesCollection(misValue);
Excel.Series Data = oSeriesCollection.NewSeries();
Data.Values = Data_Range;
Data.Name = "Plot Data";

Excel.Axis valueAxis = (Excel.Axis)chartPage.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary);
/*
Methods I've tried with no luck:
1) Data.XValues = XVal_Range;
2) Data.XValues = x_labels.ToArray();
3) valueAxis.CategoryNames = x_labels.ToArray();
4) valueAxis.CategoryNames = XVal_Range;
*/ 

每次只显示默认数字值......我不知所措

each time it just displays with the default number values... I'm at a loss

推荐答案

好的，我找到了问题所在……您无法更改散点类型图上的 X 轴.我将图形类型更改为 Excel.XlChartType.xlLineMarkers; 并且它工作正常.

Ok so i figured out the problem... You can't change the X-Axis on a Scatter type graph. I changed the type of graph to Excel.XlChartType.xlLineMarkers; and it worked fine.

这是整个片段:

Excel.ChartObjects xlChart = (Excel.ChartObjects)xlWorkSheet.ChartObjects(Type.Missing);
Excel.ChartObject myChart = (Excel.ChartObject)xlChart.Add(1420, 660, 320, 180);
Excel.Chart chartPage = myChart.Chart;
chartPage.ChartType = Excel.XlChartType.xlLineMarkers;
chartPage.HasTitle = true;
chartPage.ChartTitle.Text = "Title Text";
chartPage.HasLegend = false;

var yAxis = (Excel.Axis)chartPage.Axes(Excel.XlAxisType.xlValue,Excel.XlAxisGroup.xlPrimary);
yAxis.HasTitle = true;
yAxis.AxisTitle.Text = "Y-Axis Title text";
yAxis.MaximumScale = 20;
yAxis.AxisTitle.Orientation = Excel.XlOrientation.xlUpward;

Excel.Range Data_Range = xlWorkSheet.get_Range("A10", "C10");//Data to be plotted in chart
Excel.Range XVal_Range = xlWorkSheet.get_Range("A1", "C1");//Catagory Names I want on X-Axis as range

Excel.SeriesCollection oSeriesCollection = (Excel.SeriesCollection)myChart.Chart.SeriesCollection(misValue);
Excel.Series Data = oSeriesCollection.NewSeries();
Data.Values = Data_Range;
Data.Name = "Plot Data";

Excel.Axis xAxis = (Excel.Axis)chartPage.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary);
xAxis.CategoryNames = XVal_Range;

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