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[英]OpenXML - Writing a date into Excel spreadsheet results in unreadable content
[英]Exporting to Excel (OpenXML) results in Unreadable Content
我一直在努力为我的xlsx文件创建工作表。 添加第一个工作表不是问题,但是当我想要第二个工作表时,导出的xlsx似乎已损坏。 谁能向我指出我做错了什么? 注意:我已经尝试过调用'workbookpart,Workbook.Save();'。 在创建第一个工作簿后立即执行,但没有所需的结果。
protected void export_Click(object sender, EventArgs e)
{
ExportToExcel(@"D:\dev\Dotnet4\Excel\test.xlsx");
}
private void ExportToExcel(string filepath)
{
SpreadsheetDocument spreadsheetDocument;
WorkbookPart workbookpart;
CreateSpreadsheet(filepath, out spreadsheetDocument, out workbookpart);
CreateWorksheet(spreadsheetDocument, workbookpart, "My sheet 1");
CreateWorksheet(spreadsheetDocument, workbookpart, "My sheet 2");
workbookpart.Workbook.Save();
// Close the document.
spreadsheetDocument.Close();
}
private static void CreateWorksheet(SpreadsheetDocument spreadsheetDocument, WorkbookPart workbookpart, string worksheetName)
{
// Add a WorksheetPart to the WorkbookPart.
WorksheetPart worksheetPart = workbookpart.AddNewPart<WorksheetPart>();
worksheetPart.Worksheet = new Worksheet(new SheetData());
// Add Sheets to the Workbook.
Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.
AppendChild<Sheets>(new Sheets());
// Append a new worksheet and associate it with the workbook.
Sheet sheet = new Sheet()
{
Id = spreadsheetDocument.WorkbookPart.
GetIdOfPart(worksheetPart),
SheetId = 1,
Name = worksheetName
};
sheets.Append(sheet);
}
private static void CreateSpreadsheet(string filepath, out SpreadsheetDocument spreadsheetDocument, out WorkbookPart workbookpart)
{
// Create a spreadsheet document by supplying the filepath.
// By default, AutoSave = true, Editable = true, and Type = xlsx.
spreadsheetDocument = SpreadsheetDocument.
Create(filepath, SpreadsheetDocumentType.Workbook);
// Add a WorkbookPart to the document.
workbookpart = spreadsheetDocument.AddWorkbookPart();
workbookpart.Workbook = new Workbook();
}
我认为您有2个小问题:
SheetId
均相同,但无效。 CreateWorksheet
时都要添加一个新的Sheets
元素,但是XML中应该只有一个这样的元素(有很多Sheet
,但没有Sheets
!)。 要解决1,您可以使用sheets.ChildElements
的计数。 由于第一次是0
第二次是0
,因此您需要将其加1
。 如果愿意,可以将其作为参数CreateWorksheet
; 只要它们从1开始并且是不同的,它并不重要。
要解决2,您可以对Workbook
的Sheets
属性执行空检查,并仅在不存在时才创建它。
以下应该做的是您要遵循的。
private static void CreateWorksheet(SpreadsheetDocument spreadsheetDocument, WorkbookPart workbookpart, string worksheetName)
{
// Add a WorksheetPart to the WorkbookPart.
WorksheetPart worksheetPart = workbookpart.AddNewPart<WorksheetPart>();
worksheetPart.Worksheet = new Worksheet(new SheetData());
// Add Sheets to the Workbook.
if (spreadsheetDocument.WorkbookPart.Workbook.Sheets == null)
{
//spreadsheetDocument.WorkbookPart.Workbook.Sheets = new Sheets();
spreadsheetDocument.WorkbookPart.Workbook
.AppendChild<Sheets>(new Sheets());
}
Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.Sheets;
// Append a new worksheet and associate it with the workbook.
Sheet sheet = new Sheet()
{
Id = spreadsheetDocument.WorkbookPart.
GetIdOfPart(worksheetPart),
SheetId = (UInt32)sheets.ChildElements.Count + 1,
Name = worksheetName
};
sheets.Append(sheet);
}
最后一点是SpreadsheetDocument
实现IDisposable
因此应在使用后丢弃。
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