StringReader 和 StringWriter 派生自 TextReader 和 TextWriter
StringWriter 用于写入字符串缓冲区。它实现了一个 TextWriter，用于将信息写入字符串。
对于 StringWriter -
示例
StringWriter sWriter = new StringWriter();
while(true) {
myChar = strReader.Read();
if(myChar == -1) break;
convertedChar = Convert.ToChar(myChar);
if(convertedChar == '.') {
strWriter.Write(".");
sReader.Read();
sReader.Read();
}else {
sWriter.Write(convertedChar);
}
}
}StringReader 读取字符串 -
示例
StringBuilder sbuilder = new StringBuilder();
// append
sbuilder.AppendLine("Line one characters");
sbuilder.AppendLine("Line two characters");
sbuilder.AppendLine("Line three characters");
// read string
using (StringReader sReader = new StringReader(sbuilder.ToString())) {
string readString = await sReader.ReadToEndAsync();
Console.WriteLine(readString);
} 
