Specify Formula Fields while Importing Data to Worksheet

Possible Usage Scenarios

You can specify formula fields when you import data into your worksheet using the ImportTableOptions.IsFormulas. This property takes the Boolean array where the value true means the field is a formula field. For example, if the third field is a formula field, then the third value in the array will be true.

Specify Formula Fields while Importing Data to Worksheet

Please see the following sample code that explains how to specify the formula field while importing data to a worksheet. Please see the output Excel file generated by the code and the screenshot showing the effect of the code on the output Excel file.

Sample Code

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Aspose.Cells.Examples.CSharp.Data
{
    class SpecifyFormulaFieldsWhileImportingDataToWorksheet
    {
        //Output directory
        static string outputDir = RunExamples.Get_OutputDirectory();

        //User-defined class to hold data items
        class DataItems
        {
            public int Number1 { get; set; }
            public int Number2 { get; set; }
            public string Formula1 { get; set; }
            public string Formula2 { get; set; }
        }

        public static void Run()
        {
            //List to hold data items
            List<DataItems> dis = new List<DataItems>();

            //Define 1st data item and add it in list
            DataItems di = new DataItems();
            di.Number1 = 2002;
            di.Number2 = 3502;
            di.Formula1 = "=SUM(A2,B2)";
            di.Formula2 = "=HYPERLINK(\"https://www.aspose.com\",\"Aspose Website\")";
            dis.Add(di);

            //Define 2nd data item and add it in list
            di = new DataItems();
            di.Number1 = 2003;
            di.Number2 = 3503;
            di.Formula1 = "=SUM(A3,B3)";
            di.Formula2 = "=HYPERLINK(\"https://www.aspose.com\",\"Aspose Website\")";
            dis.Add(di);

            //Define 3rd data item and add it in list
            di = new DataItems();
            di.Number1 = 2004;
            di.Number2 = 3504;
            di.Formula1 = "=SUM(A4,B4)";
            di.Formula2 = "=HYPERLINK(\"https://www.aspose.com\",\"Aspose Website\")";
            dis.Add(di);

            //Define 4th data item and add it in list
            di = new DataItems();
            di.Number1 = 2005;
            di.Number2 = 3505;
            di.Formula1 = "=SUM(A5,B5)";
            di.Formula2 = "=HYPERLINK(\"https://www.aspose.com\",\"Aspose Website\")";
            dis.Add(di);

            //Create workbook object
            Workbook wb = new Workbook();

            //Access first worksheet
            Worksheet ws = wb.Worksheets[0];

            //Specify import table options
            ImportTableOptions opts = new ImportTableOptions();

            //Specify which field is formula field, here the last two fields are formula fields
            opts.IsFormulas = new bool[] { false, false, true, true };

            //Import custom objects
            ws.Cells.ImportCustomObjects(dis, 0, 0, opts);

            //Calculate formula
            wb.CalculateFormula();

            //Autofit columns
            ws.AutoFitColumns();

            //Save the output Excel file
            wb.Save(outputDir + "outputSpecifyFormulaFieldsWhileImportingDataToWorksheet.xlsx");

            Console.WriteLine("SpecifyFormulaFieldsWhileImportingDataToWorksheet executed successfully.");
        }
    }
}