Spire.XLS for .NET is a professional Excel .NET library that can be used to any type of .NET( C#, VB.NET, ASP.NET, .NET Core) application, both ASP.NET web sites and Windows Forms application.

Tue Aug 07, 2018 9:08 am


I use Spire.XLS because Interop makes many problems. I convert DataGrid into DataTable and i export it i new file, This file include many numbers ith dot and these numbers are false. It's a problem of format or just programming ?

When i create a new workbook too, i have 3 worksheet by default with another worksheet named : " Evaluation Warning ". Can i remove these Worksheets ?

Code: Select all
private void ExportToExcel()
            dg_test.SelectAllCells(); // Sélection du DataGrid
            dg_test.ClipboardCopyMode = DataGridClipboardCopyMode.IncludeHeader;
            ApplicationCommands.Copy.Execute(null, dg_test); // Copie presse-papier
            String result = (string)Clipboard.GetData(DataFormats.CommaSeparatedValue);

            // Conversion DataGrid en DataTable avec la virgule comme séparation
            string[] Lines = result.Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None);
            string[] Fields;

            Fields = Lines[0].Split(new char[] { ',' });
            int Cols = Fields.GetLength(0);
            DataTable dt = new DataTable();
            for (int i = 0; i < Cols; i++)
                dt.Columns.Add(Fields[i].ToUpper(), typeof(string));
            DataRow Row;

            for (int i = 1; i < Lines.GetLength(0) - 1; i++)
                Fields = Lines[i].Split(new char[] { ',' });
                Row = dt.NewRow();
                for (int f = 0; f < Cols; f++)
                    Row[f] = Fields[f];
            //fin de la conversion

            //Propriétés pour le SaveFileDialog
            SaveFileDialog savefiledlg1 = new SaveFileDialog();
            savefiledlg1.Filter = "xls(*.xls*) |*.xls* | Classeur Excel(*.xlsx) |*.xlsx | Tous(*.*)|*.* | CSV (séparateur: point-virgule) (*.csv)|*.csv* ";
            savefiledlg1.RestoreDirectory = true;
            savefiledlg1.DefaultExt = ".xlsx";
            savefiledlg1.AddExtension = true;
            savefiledlg1.InitialDirectory = "C:\\Users\\"+ System.Environment.UserName + "\\Desktop";
            savefiledlg1.Title = "Sauvegardez votre fichier Excel";

            if (savefiledlg1.ShowDialog() == DialogResult.OK)
               Sp.Workbook wourbouk = new Sp.Workbook();
               wourbouk.Version = Sp.ExcelVersion.Version2013;
               Sp.Worksheet shit = wourbouk.Worksheets[0];
               shit.InsertDataTable(dt, true, 1,1); // Methode Spite.Xls pour inésrer une DataTable dans un fichier Excel

               wourbouk.SaveToFile(savefiledlg1.FileName, Sp.ExcelVersion.Version2013);

               System.Windows.MessageBox.Show("Le DataGrid a été inséré avec succès dans le fichier Excel ,à l'adresse suivante :" + savefiledlg1.FileName + ".");

                MessageBox.Show("Une erreur inconnue est survenue ou vous avez annulé l'opération de sauvegarde");


This is my function for export DataTable to Excel

And the problem met for excel file
I want to insert an image but i'm not allowed

Sorry for my bad english.

Posts: 1
Joined: Tue Aug 07, 2018 8:41 am

Tue Aug 07, 2018 10:30 am


Thanks for your interests in our Spire.Xls.
Below are my answers to your questions.
1) I' m a little confused about the issue "This file include many numbers ith dot and these numbers are false", could you please provide detailed information for our reference? Such as your generated Excel file and the result sting you got. You could send them to support@e-iceblue.com.
2) Your are using our commercial version which will generate a new worksheet named Evaluation Warning while you don't apply a valid license. We could provide a temporary (one month free) license to help you remove the worksheet and better evaluate our product, if interested, please contact our sales team (sales@e-iceblue.com) to get it.
3) What do you mean by the "insert an image but i'm not allowed ", could you please provide further information on it? Thanks in advance.

E-iceblue support team
User avatar

Posts: 986
Joined: Tue Sep 27, 2016 1:06 am

Wed Aug 15, 2018 6:31 am


Greetings from E-iceblue.
How is your issue going? Could you please give us some feedback at your convenience?
Thanks in advance.

E-iceblue support team
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Posts: 986
Joined: Tue Sep 27, 2016 1:06 am

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