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Create ( 1 ) Dim worksheet As IWorksheet = workbook. Excel2016 'Create a workbook Dim workbook As IWorkbook = application. 'Create an instance of ExcelEngine Using excelEngine As ExcelEngine = New ExcelEngine () Dim application As IApplication = excelEngine. To exclude Expenses from the chart again, just select the chart and adjust the data range to exclude the values in the expense column.//Create an instance of ExcelEngine using ( ExcelEngine excelEngine = new ExcelEngine ()) Note that not all chart types in Excel can be used to plot multiple data series. Because a column chart can easily handle more than one data series, the chart is updated to include Expenses. Just select the chart and drag to expand the data range to include the new column. For example, let's add the values in the expense column to our chart. You can use this same approach to add a new data series. Select the chart, and use a data handle to resize the data range so that the blank cells are no longer included. You can fix this problem in the same way.

In this case, you may see space left in the chart for values that no longer exist.

The opposite problem can occur if you delete information in cells that contain source data for the chart. To fix this problem, just select the chart, and drag one of the data handles down to include the cells that contain new values. That's because the chart's reference to the source data is static and doesn't expand automatically. However, if we add data at the bottom of the range, the chart is not updated to include this new information. If we edit any values in this range, the chart is automatically updated. Just click Calculation Options and confirm that Automatic is checked.įor this chart, the source values are in the range B7:C11.

You can verify that Calculation is set to automatic on the Formulas toolbar. That's because Excel will automatically update the chart when the source data changes, as long as the calculation is set to Automatic. In this lesson we'll look at how to keep your chart updated with the latest values, and how to add more data to your chart when needed.Īfter you've created a chart, you normally don't need to worry about updating the chart manually.