C#Microsoft.Office.Interop.Excel生成折线图
时间: 2023-11-12 11:04:57 浏览: 78
在 C# 中使用 Microsoft Office 的 Excel 应用程序的编程接口,可以通过以下步骤生成折线图:
1. 创建 Excel 应用程序对象和工作簿对象,并打开 Excel 文件:
```
var excelApp = new Microsoft.Office.Interop.Excel.Application();
var workBook = excelApp.Workbooks.Open("path/ExcelFile.xlsx");
```
2. 获取工作表对象,并选择需要生成折线图的区域:
```
var workSheet = (Microsoft.Office.Interop.Excel.Worksheet)workBook.Worksheets[1];
var range = workSheet.Range["A1:B10"];
```
3. 创建一个新的图表对象:
```
var charts = (Microsoft.Office.Interop.Excel.ChartObjects)workSheet.ChartObjects(Type.Missing);
var chartObject = charts.Add(100, 100, 300, 300);
var chart = chartObject.Chart;
```
4. 设置图表类型为折线图:
```
chart.ChartType = Microsoft.Office.Interop.Excel.XlChartType.xlLine;
```
5. 将数据源设置为选择的区域:
```
var seriesCollection = (Microsoft.Office.Interop.Excel.SeriesCollection)chart.SeriesCollection(Type.Missing);
var series = seriesCollection.NewSeries();
series.Values = range;
```
6. 格式化图表,例如设置坐标轴标签和标题等:
```
chart.HasTitle = true;
chart.ChartTitle.Text = "折线图";
var axis = (Microsoft.Office.Interop.Excel.Axis)chart.Axes(Microsoft.Office.Interop.Excel.XlAxisType.xlCategory, Microsoft.Office.Interop.Excel.XlAxisGroup.xlPrimary);
axis.HasTitle = true;
axis.AxisTitle.Text = "X轴";
axis = (Microsoft.Office.Interop.Excel.Axis)chart.Axes(Microsoft.Office.Interop.Excel.XlAxisType.xlValue, Microsoft.Office.Interop.Excel.XlAxisGroup.xlPrimary);
axis.HasTitle = true;
axis.AxisTitle.Text = "Y轴";
```
7. 关闭 Excel 应用程序,并释放相关资源:
```
workBook.Close(false);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workSheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workBook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
excelApp.Quit();
```
需要注意的是,在使用完 Excel 应用程序对象和工作簿对象后,需要调用 `System.Runtime.InteropServices.Marshal.ReleaseComObject()` 方法来释放相关资源,否则可能会导致内存泄漏。