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EPPlus - Comment utiliser un modèle

J'ai récemment découvert EPPlus ( http://epplus.codeplex.com/ ). J'ai un fichier Excel .xlsx dans mon projet avec tous les en-têtes de colonne stylisés. J'ai lu sur leur site que vous pouvez utiliser des modèles.

Est-ce que quelqu'un sait ou peut fournir un exemple de code sur la façon d'utiliser mon fichier template.xlsx avec EPPlus? Je voudrais pouvoir simplement charger mes données dans les lignes sans déranger les en-têtes.

c#exceltemplatesxlsxepplus
17
Baxter

La solution avec laquelle j'ai fini par aller:

using System.IO;
using System.Reflection;
using OfficeOpenXml;

//Create a stream of .xlsx file contained within my project using reflection
Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("EPPlusTest.templates.VendorTemplate.xlsx");            

//EPPlusTest = Namespace/Project
//templates = folder
//VendorTemplate.xlsx = file

//ExcelPackage has a constructor that only requires a stream.
ExcelPackage pck = new OfficeOpenXml.ExcelPackage(stream);

Après cela, vous pouvez utiliser toutes les méthodes d'ExcelPackage que vous souhaitez sur un fichier .xlsx chargé à partir d'un modèle.

12
Baxter

// Ceci est mon implémentation pour EPPlus. // peut-être que ça aide.

class EPPlus
{
    FileInfo newFile;
    FileInfo templateFile;
    DataSet _ds;
    ExcelPackage xlPackage;
    public string _ErrorMessage;

public EPPlus(string filePath, string templateFilePath)
    {
        newFile = new FileInfo(@filePath);
        templateFile = new FileInfo(@templateFilePath);

        _ds = GetDataTables(); /* DataTables */

        _ErrorMessage = string.Empty;

        CreateFileWithTemplate();

    }

private bool CreateFileWithTemplate()
    {
        try
        {
            _ErrorMessage = string.Empty;

            using (xlPackage = new ExcelPackage(newFile, templateFile))
            {
                int i = 1;
                foreach (DataTable dt in _ds.Tables)
                {
                    AddSheetWithTemplate(xlPackage, dt, i);
                    i++;
                }



                ///* Set title, Author.. */
                //xlPackage.Workbook.Properties.Title = "Title: Office Open XML Sample";
                //xlPackage.Workbook.Properties.Author = "Author: Muhammad Mubashir.";
                ////xlPackage.Workbook.Properties.SetCustomPropertyValue("EmployeeID", "1147");
                //xlPackage.Workbook.Properties.Comments = "Sample Record Details";
                //xlPackage.Workbook.Properties.Company = "TRG Tech.";



                ///* Save */
                xlPackage.Save();

            }
            return true;
        }
        catch (Exception ex)
        {
            _ErrorMessage = ex.Message.ToString();
            return false;
        }
    }

/// <summary>
    /// This AddSheet method generates a .xlsx Sheet with your provided Template file, //DataTable and SheetIndex.
    /// </summary>
    public static void AddSheetWithTemplate(ExcelPackage xlApp, DataTable dt, int SheetIndex)
    {
        string _SheetName = string.Format("Sheet{0}", SheetIndex.ToString());
        ExcelWorksheet worksheet;
        /* WorkSheet */
        if (SheetIndex == 0)
        {
            worksheet = xlApp.Workbook.Worksheets[SheetIndex + 1]; // add a new worksheet to the empty workbook
        }
        else
        {
            worksheet = xlApp.Workbook.Worksheets[SheetIndex]; // add a new worksheet to the empty workbook
        }


        if (worksheet == null)
        {
            worksheet = xlApp.Workbook.Worksheets.Add(_SheetName); // add a new worksheet to the empty workbook    
        }
        else
        {

        }

        /* Load the datatable into the sheet, starting from cell A1. Print the column names on row 1 */
        worksheet.Cells["A1"].LoadFromDataTable(dt, true);


    }


private static void AddSheet(ExcelPackage xlApp, DataTable dt, int Index, string sheetName)
    {
        string _SheetName = string.Empty;

        if (string.IsNullOrEmpty(sheetName) == true)
        {
            _SheetName = string.Format("Sheet{0}", Index.ToString());
        }
        else
        {
            _SheetName = sheetName;
        }

        /* WorkSheet */
        ExcelWorksheet worksheet = xlApp.Workbook.Worksheets[_SheetName]; // add a new worksheet to the empty workbook
        if (worksheet == null)
        {
            worksheet = xlApp.Workbook.Worksheets.Add(_SheetName); // add a new worksheet to the empty workbook    
        }
        else
        {

        }



        /* Load the datatable into the sheet, starting from cell A1. Print the column names on row 1 */
        worksheet.Cells["A1"].LoadFromDataTable(dt, true);



        int rowCount = dt.Rows.Count;
        int colCount = dt.Columns.Count;





        #region Set Column Type to Date using LINQ.
        /*
            IEnumerable<int> dateColumns = from DataColumn d in dt.Columns
                                           where d.DataType == typeof(DateTime) || d.ColumnName.Contains("Date")
                                           select d.Ordinal + 1;

            foreach (int dc in dateColumns)
            {
                xlSheet.Cells[2, dc, rowCount + 1, dc].Style.Numberformat.Format = "dd/MM/yyyy";
            }
            */

        #endregion
        #region Set Column Type to Date using LOOP.

        /* Set Column Type to Date. */
        for (int i = 0; i < dt.Columns.Count; i++)
        {
            if ((dt.Columns[i].DataType).FullName == "System.DateTime" && (dt.Columns[i].DataType).Name == "DateTime")
            {
                //worksheet.Cells[2,4] .Style.Numberformat.Format = "yyyy-mm-dd h:mm"; //OR "yyyy-mm-dd h:mm" if you want to include the time!
                worksheet.Column(i + 1).Style.Numberformat.Format = "dd/MM/yyyy h:mm"; //OR "yyyy-mm-dd h:mm" if you want to include the time!
                worksheet.Column(i + 1).Width = 25;
            }
        }

        #endregion

        //(from DataColumn d in dt.Columns select d.Ordinal + 1).ToList().ForEach(dc =>
        //{
        //    //background color
        //    worksheet.Cells[1, 1, 1, dc].Style.Fill.PatternType = ExcelFillStyle.Solid;
        //    worksheet.Cells[1, 1, 1, dc].Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.LightYellow);

        //    //border
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Top.Style = ExcelBorderStyle.Thin;
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Right.Style = ExcelBorderStyle.Thin;
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Left.Style = ExcelBorderStyle.Thin;
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Top.Color.SetColor(System.Drawing.Color.LightGray);
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Right.Color.SetColor(System.Drawing.Color.LightGray);
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Bottom.Color.SetColor(System.Drawing.Color.LightGray);
        //    worksheet.Cells[1, dc, rowCount + 1, dc].Style.Border.Left.Color.SetColor(System.Drawing.Color.LightGray);
        //});

        /* Format the header: Prepare the range for the column headers */
        string cellRange = "A1:" + Convert.ToChar('A' + colCount - 1) + 1;
        using (ExcelRange rng = worksheet.Cells[cellRange])
        {
            rng.Style.Font.Bold = true;
            rng.Style.Fill.PatternType = ExcelFillStyle.Solid;                      //Set Pattern for the background to Solid
            rng.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(79, 129, 189));  //Set color to dark blue
            rng.Style.Font.Color.SetColor(Color.White);
        }



        /* Header Footer */
        worksheet.HeaderFooter.OddHeader.CenteredText = "Header: Tinned Goods Sales";
        worksheet.HeaderFooter.OddFooter.RightAlignedText = string.Format("Footer: Page {0} of {1}", ExcelHeaderFooter.PageNumber, ExcelHeaderFooter.NumberOfPages); // add the page number to the footer plus the total number of pages
    }


}// class End.
7
Muhammad Mubashir

Pour créer un nouveau package, vous pouvez fournir un modèle de flux:

    // templateName = the name of .xlsx file
    // result = stream to write the resulting xlsx to
    using (var source = System.IO.File.OpenRead(templateName))
    using (var Excel = new OfficeOpenXml.ExcelPackage(result, source)) {

        // Fill cells here
        // Leave headers etc as is

        Excel.Save();
    }
7
GvS

J'utilise Vb.net, voici ce que j'ai fait:

VB

Imports OfficeOpenXml

Dim existingFile As New FileInfo("C:\OldFileLocation\File.xlsx")
Dim fNewFile As New FileInfo("C:\NewFileLocation\File.xlsx")

Using MyExcel As New ExcelPackage(existingFile)
  Dim MyWorksheet As ExcelWorksheet = MyExcel.Workbook.Worksheets("ExistingSheetName")
  MyWorksheet.Cells("A1").Value = "Hello"
  'Add additional info here
  MyExcel.SaveAs(fNewFile)
End Using

Posible C # (je n'ai pas testé)

FileInfo existingFile = new FileInfo("C:\\OldFileLocation\\File.xlsx");
FileInfo fNewFile = new FileInfo("C:\\NewFileLocation\\File.xlsx");
using (ExcelPackage MyExcel = new ExcelPackage(existingFile)) {
ExcelWorksheet MyWorksheet = MyExcel.Workbook.Worksheets["ExistingSheetName"];
MyWorksheet.Cells["A1"].Value = "Hello";
    //Add additional info here
MyExcel.SaveAs(fNewFile);
}
4
JamesCBaird
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode("Logs.xlsx", System.Text.Encoding.UTF8));

using (ExcelPackage pck = new ExcelPackage())
{
    ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Logs");
    ws.Cells["A1"].LoadFromDataTable(dt, true);                 
    var ms = new System.IO.MemoryStream();
    pck.SaveAs(ms);
    ms.WriteTo(Response.OutputStream);  
}
1
Taran