EPPlus - 命名范围未填充

csharp
using OfficeOpenXML;
public void FillNamedRange()
{
    using (excelPackage package = new excelPackage(new FileInfo("sample.xlsx")))
    {
        excelWorksheet worksheet = package.Workbook.Worksheets["Sheet1"];
        // 获取要填充的单元格范围
        excelRange range = worksheet.Cells["A1:B5"];
        // 创建命名范围并关联单元格范围
        excelNamedRange namedRange = worksheet.Names.Add("MyRange");
        namedRange.Value = range;
        
        package.Save();
    }
}