我是OpenXML的新手(2.5版),我可以创建行和单元格,但我需要能够设置列宽,但由于某些原因我无法正确执行。
没有此代码:
Columns cols = new Columns();
Column c1 = new Column()
{
CustomWidth = true,
Width = 20
};
cols.Append(c1);
wspart.Worksheet.Append(cols);
程序运行并生成excel文件。
下面的代码符合并运行,但留下了一个损坏的Excel文档。当我尝试添加列时,我做错了什么?
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
}
答案 0 :(得分:15)
上面选择的答案并没有解决我的问题,但我终于明白了。对我来说问题是当我调用该行时:Columns columns1=worksheet1.GetFirstChild<Columns>();
工作表中当前没有Columns
个子项,因此返回的对象为null,当我尝试向{00添加列时出现运行时错误{1}}对象。
问题是Excel非常挑剔。实际sheet.xml文件中的columns元素必须位于sheetdata元素之前。尝试将我的自定义列附加到工作表导致文件损坏,因为它将columns元素放在了sheetdata元素之后。因为我知道它必须在sheetdata元素之前,我必须将它插入到工作表的开头而不是将其附加到工作表。以下代码对我有用:
Columns
希望这有助于某人!!
答案 1 :(得分:1)
我遇到了同样的问题,即 .GetFirstChild<Columns>
为空。创建 Columns
对象并在索引 0 处插入(与其他答案一样)使 Excel 抱怨该文件无效。相反,它似乎需要在 SheetData
部分之前的列定义:
if (needToInsertColumns)
{
var sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>();
worksheetPart.Worksheet.InsertBefore(columnsList, sheetData);
}