我尝试使用多个文本文件创建ZIP存档,如下所示:
Dictionary<string, string> Values = new Dictionary<string, string>();
using (var memoryStream = new MemoryStream())
{
string zip = @"C:\Temp\ZipFile.zip";
foreach (var item in Values)
{
using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
{
var file = archive.CreateEntry(item.Key + ".txt");
using (var entryStream = file.Open())
using (var streamWriter = new StreamWriter(entryStream))
{
streamWriter.Write(item.Value);
}
}
}
using (var fileStream = new FileStream(zip, FileMode.Create))
{
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.CopyTo(fileStream);
}
}
但是,ZIP仅使用最后一个文本文件创建,这有什么不对?
答案 0 :(得分:11)
您在每次迭代时都在创建ZipArchive
。交换foreach
和using
应解决此问题:
Dictionary<string, string> Values = new Dictionary<string, string>();
using (var memoryStream = new MemoryStream())
{
string zip = @"C:\Temp\ZipFile.zip";
using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
{
foreach (var item in Values)
{
var file = archive.CreateEntry(item.Key + ".txt");
using (var entryStream = file.Open())
using (var streamWriter = new StreamWriter(entryStream))
{
streamWriter.Write(item.Value);
}
}
}
using (var fileStream = new FileStream(zip, FileMode.Create))
{
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.CopyTo(fileStream);
}
}
答案 1 :(得分:1)
每次foreach循环运行时,ZipArchiveMode都为Create。这应该是问题所在,因此每次都会生成新的zip,其中包含新内容,例如最后一个文本文件。在应该解决的第一个循环之后为每个循环运行创建一个异常。