Ich bin neu in OpenXML (Version 2.5) und kann Zeilen und Zellen erstellen, aber ich muss die Spaltenbreite festlegen können, und das kann ich aus irgendeinem Grund nicht richtig.

Ohne diesen Code:

        Columns cols = new Columns();

        Column c1 = new Column()
        {
            CustomWidth = true,
            Width = 20
        };

        cols.Append(c1);
        wspart.Worksheet.Append(cols);

Das Programm wird ausgeführt und generiert eine Excel-Datei.

Der folgende Code stimmt überein und wird ausgeführt, hinterlässt jedoch ein beschädigtes Excel-Dokument. Was mache ich falsch, wenn ich versuche, Spalten hinzuzufügen?

    public static void createExcel() //TODO change to private
    {
        //create the spreadsheet document with openxml See https://msdn.microsoft.com/en-us/library/office/ff478153.aspx
        SpreadsheetDocument spreadsheetDoc = SpreadsheetDocument.Create(@"C:\Users\Reid\Documents\BLA\test.xlsx", SpreadsheetDocumentType.Workbook); //TODO change path

        //add a workbook part
        WorkbookPart wbpart = spreadsheetDoc.AddWorkbookPart();
        wbpart.Workbook = new Workbook();

        //add a worksheet part
        WorksheetPart wspart = wbpart.AddNewPart<WorksheetPart>();
        Worksheet ws = new Worksheet(new SheetData());
        wspart.Worksheet = ws;

        //create a new sheets array
        Sheets sheets = spreadsheetDoc.WorkbookPart.Workbook.AppendChild<Sheets>(new Sheets());

        //create a new sheet
        Sheet sheet = new Sheet()
        {
            Id = spreadsheetDoc.WorkbookPart.GetIdOfPart(wspart),
            SheetId = 1,
            Name = "mySheet" //TODO change name
        };

        //add the sheet to the workbook sheet aray
        sheets.Append(sheet);

        SheetData shData = wspart.Worksheet.GetFirstChild<SheetData>();

        //////////////////////////////////row and col widths//////////////////////
        Columns cols = new Columns();

        Column c1 = new Column()
        {
            CustomWidth = true,
            Width = 20
        };

        cols.Append(c1);
        wspart.Worksheet.Append(cols);

        //create the first row
        Row r1 = new Row
        {
            RowIndex = 1,
            CustomHeight = true,
            Height = 71.25 //change height based on info
        };
        shData.Append(r1);
  ////////////////////////cell data/////////////////////////////////

        // In the new row, find the column location to insert a cell in A1.
        Cell refCell = null;
        foreach (Cell cell in r1.Elements<Cell>())
        {
            if (string.Compare(cell.CellReference.Value, "A1", true) > 0)
            {
                refCell = cell;
                break;
            }
        }
        // Add the cell to the cell table at A1.
        Cell newCell = new Cell() {
            CellReference = "A1",
        };
        r1.InsertBefore(newCell, refCell);

        // Set the cell value to be a numeric value of 100.
        newCell.CellValue = new CellValue("100");


        //TODO add in standard things (text that is always the same, headers, logos, etc.)

        //TODO add in dynamic text

        //TODO create and add in barcodes

        //Save and close the document
        wbpart.Workbook.Save();
        spreadsheetDoc.Close();

        //TODO send document to database
    }