EPPlus图表:如何绘制垂直条形图而不是水平默认值

Question

我陷入了EPPlus(4.0.1)的问题.我的条形图是横向绘制的,但我希望它是垂直的.我试图更改"chart.Direction"属性,但我给出了一个错误,因为它是只读的.我也没有看到在我的'ExcelBarChart'变量的构造函数中设置变量的方法.对不起,如果这是一个基本问题,我正在阅读文档,但无法弄清楚.chart.Direction可能甚至不是我所知道的所有属性.我用C#编程.提前感谢您的任何答案.

OfficeOpenXml.Drawing.Chart.ExcelBarChart chart = (OfficeOpenXml.Drawing.Chart.ExcelBarChart)ws.Drawings.AddChart("barChart", OfficeOpenXml.Drawing.Chart.eChartType.BarClustered);
chart.SetSize(widthPx, heightPx);
chart.SetPosition(startTopPx, startLeftPx);
chart.Title.Text = "Clustered Bar Graph Report";
chart.Direction = eDirection.Column; // error: Property or indexer 'OfficeOpenXml.Drawing.Chart.ExcelBarChart.Direction' cannot be assigned to -- it is read only

ws.Cells["A1"].LoadFromDataTable(data, true); // load dataTable into Cells
int fromRow = 2;
int toRow = 2;
int fromCol = 2;
int toCol = 5;

int xRow = 2;
int xCol = 1;
chart.Series.Add(ExcelRange.GetAddress(fromRow, fromCol, toRow, toCol), 
                                         ExcelRange.GetAddress(xRow, xCol));

Answer 1

我想你要使用eChartType.ColumnClustered而不是eChartType.BarClustered因为Direction意味着在构造时设置(在源代码中占据了一席之地).像这样:

[TestMethod]
public void Vertical_Bar_Chart()
{
    var existingFile = new FileInfo(@"c:\temp\temp.xlsx");
    if (existingFile.Exists)
        existingFile.Delete();

    using (var package = new ExcelPackage(existingFile))
    {
        var workbook = package.Workbook;
        var ws = workbook.Worksheets.Add("newsheet");

        //Some data
        ws.Cells["A12"].Value = "wer";
        ws.Cells["A13"].Value = "sdf";
        ws.Cells["A14"].Value = "wer";
        ws.Cells["A15"].Value = "ghgh";

        ws.Cells["B12"].Value = 53;
        ws.Cells["B13"].Value = 36;
        ws.Cells["B14"].Value = 43;
        ws.Cells["B15"].Value = 86;

        //Create the chart
        var chart = (ExcelBarChart)ws.Drawings.AddChart("barChart", eChartType.ColumnClustered);
        chart.SetSize(300 ,300);
        chart.SetPosition(10,10);
        chart.Title.Text = "Clustered Bar Graph Report";
        //chart.Direction = eDirection.Column; // error: Property or indexer 'OfficeOpenXml.Drawing.Chart.ExcelBarChart.Direction' cannot be assigned to -- it is read only

        chart.Series.Add(ExcelRange.GetAddress(12, 2, 15, 2), ExcelRange.GetAddress(12, 1, 15, 1));

        package.Save();

    }
}