Open-XML-SDK
Open XML SDK提供了用於處理Office Word、Excel和PowerPoint文檔的工具。
它支持以下情況。
- 高性能地生成文字處理文檔、電子表格和演示文稿。
- 文檔修改，如添加、更新和刪除內容和元數據。
- 使用正則表達式搜索和替換內容。
- 將一個文件分割（粉碎）爲多個文件，並將多個文件合併爲一個文件。
- 更新Word/PowerPoint中圖表的緩存數據和嵌入式電子表格。
獲取Nuget包
dotnet add package DocumentFormat.OpenXml.Linq
簡單使用
讀取Excel文件
public class ReadSheetCommand : IRequest<HandlerResult<IEnumerable<string>>>
{
/// <summary>
/// 目標路徑
/// </summary>
public string TargetPath { get; private set; }
/// <summary>
/// 目標頁面
/// </summary>
public string TargetSheet { get; private set; }
/// <summary>
/// 構造函數
/// </summary>
/// <param name="targetPath">目標路徑</param>
/// <param name="targetSheet">目標頁面</param>
public ReadSheetCommand(string targetPath, string targetSheet)
{
TargetPath = targetPath;
TargetSheet = targetSheet;
}
}
internal class ReadSheetCommandHandler : IRequestHandler<ReadSheetCommand, HandlerResult<IEnumerable<string>>>
{
public async Task<HandlerResult<IEnumerable<string>>> Handle(ReadSheetCommand request, CancellationToken cancellationToken)
{
if(request is null || string.IsNullOrEmpty(request.TargetPath) || File.Exists(request.TargetPath) == false)
{
return await Task.FromResult(HandlerResult<IEnumerable<string>>.Failure("打開文件不存在"));
}
var allLines = new List<string>();
try
{
// 創建SpreadsheetDocument對象，打開文件並且只讀
using (SpreadsheetDocument mySpreadsheet = SpreadsheetDocument.Open(request.TargetPath, false))
{
var wbPart = mySpreadsheet.WorkbookPart;
Sheet targetSheet;
if(!string.IsNullOrEmpty(request.TargetSheet))
{
targetSheet = wbPart.Workbook.Descendants<Sheet>().FirstOrDefault(x => x.Name == request.TargetSheet);
}
else
{
targetSheet = wbPart.Workbook.Descendants<Sheet>().FirstOrDefault();
}
var wsPart = wbPart.GetPartById(targetSheet.Id) as WorksheetPart;
if(wsPart is not null)
{
var wsRows = wsPart.Worksheet.Descendants<Row>();
foreach (var wsRow in wsRows)
{
var sb = new StringBuilder();
foreach (Cell wsCell in wsRow)
{
var wsValue = GetCellValue(wbPart, wsCell);
sb.Append(wsValue);
sb.Append(',');
}
allLines.Add(sb.ToString());
}
}
}
}
catch (Exception ex)
{
if(ex.Message.Contains("End of Central Directory record could not be found."))
{
return HandlerResult<IEnumerable<string>>.Failure("文件打開失敗，已損壞或者格式錯誤");
}
else if (ex.Message.Contains("because it is being used by another process."))
{
return HandlerResult<IEnumerable<string>>.Failure("文件打開失敗，它被另外一個進程佔用了");
}
System.Console.WriteLine(ex.Message);
}
return await Task.FromResult(HandlerResult<IEnumerable<string>>.OK(allLines));
}
public static string GetCellValue(WorkbookPart wbPart, Cell theCell)
{
string value = theCell.InnerText;
if (theCell.DataType != null)
{
switch (theCell.DataType.Value)
{
case CellValues.SharedString:
var stringTable = wbPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();
if (stringTable != null)
{
value = stringTable.SharedStringTable.ElementAt(int.Parse(value)).InnerText;
}
break;
case CellValues.Boolean:
switch (value)
{
case "0":
value = "FALSE";
break;
default:
value = "TRUE";
break;
}
break;
}
}
return value;
}
}