c# - 使用 EPPLus 自动调整长字符串

Question

使用 EPPLus 库，我试图以这种方式在 xlsx 单元格中自动调整非常长的字符串:

worksheet.Cells.AutoFitColumns();

行数:1000

列数:10

对于 2 列，我希望每个单元格中包含大约 6000 个字符。在这种情况下，AutoFitColumns 方法会生成以下异常:

Message: A generic error occurred in GDI+.

StackTrace: at System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea, StringFormat stringFormat) at System.Drawing.Graphics.MeasureString(String text, Font font, Int32 width, StringFormat format) at OfficeOpenXml.ExcelRangeBase.AutoFitColumns(Double MinimumWidth, Double MaximumWidth) at OfficeOpenXml.ExcelRangeBase.AutoFitColumns()...

编辑

这是我的完整代码:

using (ExcelPackage package = new ExcelPackage(newFile))
{
    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Sheet1");
    // Setup the first row with headers
    for (int j = 0; j < fields.Length; j++)
    {
        worksheet.Cells[1, j + 1].Value = fields[j];
    }

    Color colFromHex = ColorTranslator.FromHtml("#B4B4B4");
    worksheet.Row(1).Style.Fill.PatternType = ExcelFillStyle.Solid;
    worksheet.Row(1).Style.Fill.BackgroundColor.SetColor(colFromHex);


    // Insert new rows
    for (int i = 0; i < elements.Count; i++)
    {
        // this will return List<object>
        var properties =  elements[i].GetPatentProperties();
        for (int j = 0; j < properties.Count; j++)
        {
            worksheet.Cells[i + 2, j + 1].Value = properties[j];
        }
    }

    // This will throw an exception for big number of elements: ~ 1000 element
    worksheet.Cells.AutoFitColumns();
    worksheet.Cells.Style.WrapText = true;

    //worksheet.Cells[autosize].Style.HorizontalAlignment = ExcelHorizontalAlignment.CenterContinuous;
    package.Save();
}

请注意，对于相同的元素列表，如果我删除 worksheet.Cells.AutoFitColumns();，我将无一异常(exception)地得到我的 xlsx 文件。

是否有可能克服这个问题？

Answer 1

您是否尝试过设置最小和最大列尺寸？

ws.Cells.AutoFitColumns(10, 60);