C# 将日志写入文本文件

<span style="font-size:14px;"> <span style="white-space:pre">	</span>/// <summary>
/// 记录文本文件日志方法
/// </summary>
/// <param name="FileContent">需要记录的文件内容</param>
/// <param name="TxtFileName">保存的文件名</param>
/// <param name="ErrMsg">错误信息</param>
/// <returns></returns>
public static bool WriteFile(string FileContent, string TxtFileName, out string ErrMsg)
{
ErrMsg = string.Empty;
StreamWriter writer = null;
string sCurDate = System.DateTime.Now.ToString("yyyy-MM-dd");
string sFile = sCurDate + TxtFileName + ".txt";
sFile = "D:\\Log\\Log001.txt";
try
{
if (File.Exists(sFile))
writer = new StreamWriter(sFile, true, System.Text.Encoding.GetEncoding("UTF-8"));
else
writer = new StreamWriter(sFile, false, System.Text.Encoding.GetEncoding("UTF-8"));
string sDateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss");
writer.WriteLine("<" + sDateTime + "> " + " " + FileContent);
}
catch (IOException e)
{
ErrMsg = e.Message;
return false;
}
finally
{
if (writer != null)
writer.Close();
}
return true;
}</span>

<span style="font-size:14px;">  /// <summary>
/// 记录文本文件日志方法
/// </summary>
/// <param name="FileContent">需要记录的文件内容</param>
/// <param name="TxtFileName">保存的文件名</param>
/// <param name="SubFolder">子文件名</param>
/// <param name="ErrMsg">错误信息</param>
/// <returns></returns>
public static bool WriteFile(string FileContent, string TxtFileName, string SubFolder, out string ErrMsg)
{
ErrMsg = string.Empty;
StreamWriter writer = null;
string sCurDate = System.DateTime.Now.ToString("yyyy-MM-dd");
string sFile = sCurDate + TxtFileName + ".txt";
string sFolder = string.Empty;
if (SubFolder != null && SubFolder.Trim().Length > 0)
{
sFile = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log\\" + SubFolder + "\\" + sFile;
sFolder = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log\\" + SubFolder;
}
else
{
sFile = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log\\" + sFile;
sFolder = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log\\";
}
try
{
if (!Directory.Exists(sFolder))
{
Directory.CreateDirectory(sFolder);
}
if (File.Exists(sFile))
{
writer = new StreamWriter(sFile, true, System.Text.Encoding.GetEncoding("UTF-8"));
}
else
{
writer = new StreamWriter(sFile, false, System.Text.Encoding.GetEncoding("UTF-8"));
}
string sDateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss");
writer.WriteLine("<" + sDateTime + "> " + " " + FileContent);
}
catch (IOException e)
{
ErrMsg = e.ToString();
return false;
}
finally
{
if (writer != null)
{
writer.Close();
}
}
return true;
}</span>