在VB.Net中向Excel图表添加多个数据系列

在VB.Net中向Excel图表添加多个数据系列的解决方法可以按照以下步骤进行操作：

首先，确保已经安装并引用了Excel对象库。在VB.Net中，可以通过在项目中添加对 Microsoft .Office.Interop.Excel的引用来实现。

接下来，创建一个Excel 应用 程序对象并打开Excel文件。可以使用下面的代码示例：

Dim xlApp As New Excel.Application
Dim xlWorkbook As Excel.Workbook = xlApp.Workbooks.Open("C:\Path\To\Your\Excel\File.xlsx")
Dim xlWorksheet As Excel.Worksheet = xlWorkbook.Sheets("Sheet1")
Dim xlChart As Excel.Chart = xlWorksheet.ChartObjects.Add(100, 100, 500, 300).Chart
然后，将数据添加到工作表中。可以使用下面的代码示例：
xlWorksheet.Range("A1").Value = "Category"
xlWorksheet.Range("B1").Value = "Series1"
xlWorksheet.Range("C1").Value = "Series2"
xlWorksheet.Range("A2").Value = "Category1"
xlWorksheet.Range("B2").Value = 10
xlWorksheet.Range("C2").Value = 20
xlWorksheet.Range("A3").Value = "Category2"
xlWorksheet.Range("B3").Value = 30
xlWorksheet.Range("C3").Value = 40
接下来，将数据系列添加到图表中。可以使用下面的代码示例：
xlChart.SetSourceData(xlWorksheet.Range("A1:C3"), Excel.XlRowCol.xlColumns)
xlChart.SeriesCollection.NewSeries()
xlChart.SeriesCollection(1).Values = xlWorksheet.Range("B2:B3")
xlChart.SeriesCollection(1).XValues = xlWorksheet.Range("A2:A3")
xlChart.SeriesCollection.NewSeries()
xlChart.SeriesCollection(2).Values = xlWorksheet.Range("C2:C3")
xlChart.SeriesCollection(2).XValues = xlWorksheet.Range("A2:A3")
最后，保存并关闭Excel文件。可以使用下面的代码示例：
xlWorkbook.Save()
xlWorkbook.Close()
xlApp.Quit()
完整的示例代码如下：
Imports Excel = Microsoft.Office.Interop.Excel
Module Module1
    Sub Main()
        Dim xlApp As New Excel.Application
        Dim xlWorkbook As Excel.Workbook = xlApp.Workbooks.Open("C:\Path\To\Your\Excel\File.xlsx")
        Dim xlWorksheet As Excel.Worksheet = xlWorkbook.Sheets("Sheet1")
        Dim xlChart As Excel.Chart = xlWorksheet.ChartObjects.Add(100, 100, 500, 300).Chart
        xlWorksheet.Range("A1").Value = "Category"
        xlWorksheet.Range("B1").Value = "Series1"
        xlWorksheet.Range("C1").Value = "Series2"
        xlWorksheet.Range("A2").Value = "Category1"
        xlWorksheet.Range("B2").Value = 10
        xlWorksheet.Range("C2").Value = 20
        xlWorksheet.Range("A3").Value = "Category2"
        xlWorksheet.Range("B3").Value = 30
        xlWorksheet.Range("C3").Value = 40
        xlChart.SetSourceData(xlWorksheet.Range("A1:C3"), Excel.XlRowCol.xlColumns)
        xlChart.SeriesCollection.NewSeries()
        xlChart.SeriesCollection(1).Values = xlWorksheet.Range("B2:B3")
        xlChart.SeriesCollection(1).XValues = xlWorksheet.Range("A2:A3")
        xlChart.SeriesCollection.NewSeries()
        xlChart.SeriesCollection(2).Values = xlWorksheet.Range("C2:C3")
        xlChart.SeriesCollection(2).XValues = xlWorksheet.Range("A2:A3")
        xlWorkbook.Save()
        xlWorkbook.Close()
        xlApp.Quit()
    End Sub
End Module
以上就是在VB.Net中向Excel图表添加多个数据系列的解决方法，希望对你有所帮助！