OpenXML 自定义列宽不起作用

我正在尝试更改某些 Excel 列的宽度。我已经尝试了一切，但我不断收到空的 Excel 文档，我的 Excel 文件在没有此添加的情况下工作正常：

Columns columns = new Columns();

columns.Append(new Column() { Min = 1, Max = 3, Width = 20, CustomWidth = true });
columns.Append(new Column() { Min = 4, Max = 4, Width = 30, CustomWidth = true });

wsPart.Worksheet.Append(columns);

但一旦我添加这个就像这位用户建议的那样，我必须修复我的excel文件，它会是空的。我收到此错误：“已替换部分：/xl/worksheets/sheet.xml 部分出现 XML 错误。加载错误。第 1 行，第 0 列。 ”。并且‘修复’的文件是空的。

我的代码基本上和上面的一样MSDN 示例

我尝试了许多不同的方法来更改列宽，所以我认为问题出在其他地方。我似乎无法弄清楚出了什么问题。

编辑：完整代码

_document = SpreadsheetDocument.Create(newFileName, SpreadsheetDocumentType.Workbook);

_workbookPart = _document.AddWorkbookPart();
_workbookPart.Workbook = new Workbook();

WorksheetPart worksheetPart = _workbookPart.AddNewPart<WorksheetPart>();
worksheetPart.Worksheet = new Worksheet(new SheetViews(new SheetView { WorkbookViewId = 0, ShowGridLines = new BooleanValue(false) }), new SheetData());

_document.WorkbookPart.Workbook.AppendChild(new Sheets());

Sheet sheet = new Sheet { Id = _document.WorkbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "Sheet1" };
_workbookPart.Workbook.Sheets.Append(sheet);


WorkbookStylesPart stylesPart = _workbookPart.AddNewPart<WorkbookStylesPart>();
stylesPart.Stylesheet = CreateStylesheet();
stylesPart.Stylesheet.Save();

Columns columns = new Columns();

columns.Append(new Column() { Min = 1, Max = 3, Width = 20, CustomWidth = true });
columns.Append(new Column() { Min = 4, Max = 4, Width = 30, CustomWidth = true });

worksheetPart.Worksheet.Append(columns);

_sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>();

您的元素顺序略有不同。这Columns应该放置before the SheetData而不是之后。工作表的 XML 架构的相关部分是：

<xsd:complexType name="CT_Worksheet">
    <xsd:sequence>
    <xsd:element name="sheetPr" type="CT_SheetPr" minOccurs="0" maxOccurs="1"/>
    <xsd:element name="dimension" type="CT_SheetDimension" minOccurs="0" maxOccurs="1"/>
    <xsd:element name="sheetViews" type="CT_SheetViews" minOccurs="0" maxOccurs="1"/>
    <xsd:element name="sheetFormatPr" type="CT_SheetFormatPr" minOccurs="0" maxOccurs="1"/>
    <xsd:element name="cols" type="CT_Cols" minOccurs="0" maxOccurs="unbounded"/>
    <xsd:element name="sheetData" type="CT_SheetData" minOccurs="1" maxOccurs="1"/>

要修复您的代码，您可以删除SheetData从你的new Worksheet行并添加SheetData之后Columns:

worksheetPart.Worksheet = new Worksheet(new SheetViews(new SheetView { WorkbookViewId = 0, ShowGridLines = new BooleanValue(false) }));

//....code omitted for brevity

Columns columns = new Columns();

columns.Append(new Column() { Min = 1, Max = 3, Width = 20, CustomWidth = true });
columns.Append(new Column() { Min = 4, Max = 4, Width = 30, CustomWidth = true });

worksheetPart.Worksheet.Append(columns);
worksheetPart.Worksheet.Append(new SheetData());

或者你可以离开new Worksheet按原样编码并使用InsertBefore添加时的方法Columns将它们插入到之前SheetData:

Columns columns = new Columns();

columns.Append(new Column() { Min = 1, Max = 3, Width = 20, CustomWidth = true });
columns.Append(new Column() { Min = 4, Max = 4, Width = 30, CustomWidth = true });

var sheetdata = worksheetPart.Worksheet.GetFirstChild<SheetData>();
worksheetPart.Worksheet.InsertBefore(columns, sheetdata);

另一件需要注意的事情 - 你应该把SpreadsheetDocument.Create在 using 语句中。这将清理所有资源并在更改结束时为您保存文件，即：

using (var _document = SpreadsheetDocument.Create(filename, SpreadsheetDocumentType.Workbook))
{
    //all your OpenXml code here...
}