读取xml节点属性的value 是二进制的 如何转换为原始文件

[来自星星的你_]

string filename = Server.MapPath("~/file/3333.xml");
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(filename);
XmlNode cNodes = xmldoc.SelectSingleNode("title");
for (int i = 0; i < cNodes.ChildNodes.Count; i++)
{
XmlNode c = cNodes.ChildNodes[i];
string s = c.Attributes["stream"].Value;//已经读到了值 ，此值是二进制格式的
//如何把这个二进制的保存为原来的文件，放在本地
}

[来自星星的你_]

来人回答~~~~~~~~~~~~~

[IE11下面经常卡到爆]

二进制，0和1的字符长串？一致最多也是十六进制的，两位表示一个字节吧

[ajianchina]

string filename = Server.MapPath("~/file/3333.xml");
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(filename);
XmlNode cNodes = xmldoc.SelectSingleNode("title");
for (int i = 0; i < cNodes.ChildNodes.Count; i++)
{
    XmlNode c = cNodes.ChildNodes[i];
    c.InnerText = Convert.ToInt32(c.Attributes["stream"].Value,2).ToString();
}
xmldoc.Save("~/file/3333.xml");//保存

[ajianchina]

上面节点弄错了

string filename = Server.MapPath("~/file/3333.xml");
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(filename);
XmlNode cNodes = xmldoc.SelectSingleNode("title");
for (int i = 0; i < cNodes.ChildNodes.Count; i++)
{
    XmlNode c = cNodes.ChildNodes[i];
    c.Attributes["stream"].Value = Convert.ToInt32(c.Attributes["stream"].Value, 2).ToString();
}
xmldoc.Save("~/file/3333.xml");//保存

[ajianchina]

如果是字符串的值

string filename = Server.MapPath("~/file/3333.xml");
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(filename);
XmlNode cNodes = xmldoc.SelectSingleNode("title");
for (int i = 0; i < cNodes.ChildNodes.Count; i++)
{
    XmlNode c = cNodes.ChildNodes[i];
    c.Attributes["stream"].Value = jiema(c.Attributes["stream"].Value);
}
xmldoc.Save("~/file/3333.xml");//保存

public static string jiema(string s)
{
    System.Text.RegularExpressions.CaptureCollection cs =
        System.Text.RegularExpressions.Regex.Match(s, @"([01]{8})+").Groups[1].Captures;
    byte[] data = new byte[cs.Count];
    for (int i = 0; i < cs.Count; i++)
    {
        data[i] = Convert.ToByte(cs[i].Value, 2);
    }
    return Encoding.Unicode.GetString(data, 0, data.Length);
}

[Dotar]

byte[] data = Encoding.ASCII.GetBytes(s); FileStream fstream = File.Create("~\\File\\xxxxx.格式", data.Length); try { fstream.Write(data, 0, data.Length); //二进制转换成文件 } catch (Exception ex) { //抛出异常信息 }