C#文件操作

class FileHelper
{
public static string EMAIL_FILE = "emails.json";
public static string QUARTZ_FILE = "quartz.json";
public static string SMTP_FILE = "smtp.json";

#region 保存文件到硬盘 writeFile
/// <summary>
/// 保存文件到硬盘
/// </summary>
/// <param name="path">文件的路径名称</param>
/// <param name="content">文件内容</param>
/// <returns>保存是否成功</returns>
public static bool writeFile(string path, string content)
{
try
{
FileStream fs = new FileStream(path, FileMode.Create);
StreamWriter sw = new StreamWriter(fs, Encoding.UTF8);
sw.Write(content);
sw.Flush();
sw.Close();
fs.Close();
}
catch (Exception)
{
return false;
}

return true;
}
#endregion

#region 保存文件到硬盘 writeFile
/// <summary>
/// 保存文件到硬盘
/// </summary>
/// <param name="path">文件的路径名称</param>
/// <param name="content">文件内容</param>
/// <returns>保存是否成功</returns>
public static bool writeFileAppend(string path, string content)
{
try
{
FileStream fs = new FileStream(path, FileMode.Append);
StreamWriter sw = new StreamWriter(fs, Encoding.UTF8);
sw.Write(content);
sw.Flush();
sw.Close();
fs.Close();
}
catch (Exception)
{
return false;
}

return true;
}
#endregion

#region 读取文件 readFile
/// <summary>
/// 读取文件
/// </summary>
/// <param name="path">读取文件路径</param>
/// <returns>返回读取的文件内容</returns>
public static string readFile(string path)
{
StringBuilder sb = new StringBuilder();
try
{

FileStream fs = new FileStream(path, FileMode.Open);
StreamReader sr = new StreamReader(fs, false);
string line = "";
while ((line = sr.ReadLine()) != null)
{
sb.AppendLine(line);
}
sr.Close();
fs.Close();
}
catch (Exception)
{
return "";
}

return sb.ToString();
}
#endregion
}