Unable to read via Custom Activity

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1

Scenario:Ui path Custom Activity

Steps to reproduce: Working fine in visual studio not working in UIPath

Current Behavior: public class SimpleFormula : CodeActivity

{
    [Category("Input")]
    [RequiredArgument]
    public InArgument<string> PathExcel { get; set; }

    [Category("Input")]
    [RequiredArgument]
    public InArgument<string> SheetName { get; set; }

    [Category("Output")]
    [RequiredArgument]
    public InArgument<DataTable> ResultTable { get; set; }

    protected override void Execute(CodeActivityContext context)
    {
        var ExcelPath = PathExcel.Get(context);
        var Sheetname = SheetName.Get(context);

        
        using (OleDbConnection conn = new OleDbConnection())
        {

            string path = ExcelPath;
            string sheetName = Sheetname;
            DataTable DtSet = new DataTable();

            string Import_FileName = path;
            string fileExtension = System.IO.Path.GetExtension(Import_FileName);
            if (fileExtension == ".xls")
                conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Import_FileName + ";" + "Mode=ReadWrite;" + "Extended Properties='Excel 8.0;HDR=YES;'";
            if (fileExtension == ".xlsx")
                conn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Import_FileName + ";" + "Mode=ReadWrite;" + "Extended Properties='Excel 12.0 Xml;HDR=YES;'";
                using (OleDbCommand comm = new OleDbCommand())
                {
                    comm.CommandText = "Select * from [" + sheetName + "$];";

                    comm.Connection = conn;

                    using (OleDbDataAdapter da = new OleDbDataAdapter())
                    {
                        da.SelectCommand = comm;
                        da.Fill(DtSet);

                    }
                   
                }
                var result = DtSet;
                ResultTable.Set(context, result);
               

            }
            

        }
    }

Expected Behavior:Read the data from DataTable

Studio/Robot/Orchestrator Version:

Last stable behavior:
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OS Version:
Others if Relevant: (workflow, logs, .net version, service pack, etc):

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