[英]How to create a chart with EPPlus with multiple series?
我正在嘗試使用 EPPlus 創建此圖表:
Area Imports Exports
North America 9.00010837 14.54751448
South America 7.878137347 4.878011063
Europe 32.41924303 39.37317481
Middle East 6.859031587 12.94288951
Africa 7.611513341 2.938054884
Asia 36.23196633 25.32035526
結果應如下所示:
這是我的代碼:
dataSheet.Cells["A1"].Value = "Area";
dataSheet.Cells["B1"].Value = "Imports";
dataSheet.Cells["C1"].Value = "Exports";
var row = 2;
foreach (var item in items)
{
dataSheet.Cells["A" + row].Value = item.GeographicalAreaPersianName;
dataSheet.Cells["B" + row].Value = item.ImportsShare;
dataSheet.Cells["C" + row].Value = item.ExportsShare;
row++;
}
var diagram = diagramSheet.Drawings.AddChart("chart", eChartType.ColumnClustered);
for (int i = 2; i <= row; i++)
{
var series = diagram.Series.Add($"'Data'!B{i}:C{i}", $"'Data'!A{i}:A{i}");
}
diagram.Border.Fill.Color = System.Drawing.Color.Green;
然而我得到的是這個結果:
如您所見,系列標題未正確顯示,我在 EPPlus 中找不到適當的幫助。 我該如何糾正?
假設數據的存儲方式如下面的屏幕截圖所示:
以下應該可以解決問題:
var diagram = worksheet.Drawings.AddChart("chart", eChartType.ColumnClustered);
for (int i = 2; i <= row; i++)
{
var series = diagram.Series.Add($"B{i}:C{i}", "B1:C1");
series.Header = worksheet.Cells[$"A{i}"].Value.ToString();
}
diagram.Border.Fill.Color = System.Drawing.Color.Green;
Add 方法的第二個參數代表系列的標題 {"Imports", "Exports"}
對於區域,您必須設置標題。
結果圖表如下所示:(上面代碼的實際結果):
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