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TraceListener.cs
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TraceListener.cs
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/*
* By David Barrett, Microsoft Ltd. 2022. Use at your own risk. No warranties are given.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* */
using System;
using Microsoft.Exchange.WebServices.Data;
using System.IO;
namespace EWSStreamingNotificationSample
{
public class TraceListener : ITraceListener
{
string _traceFile = "";
private StreamWriter _traceStream = null;
object _writeLock = new object();
public TraceListener(string traceFile)
{
try
{
_traceStream = File.AppendText(traceFile);
_traceFile = traceFile;
}
catch { }
}
~TraceListener()
{
CloseTraceFile();
}
public void CloseTraceFile()
{
if (_traceStream == null)
return;
try
{
_traceStream.Flush();
_traceStream.Close();
}
catch { }
_traceStream = null;
}
public void Trace(string traceType, string traceMessage)
{
if (String.IsNullOrEmpty(traceMessage))
return;
if (_traceStream == null)
{
if (String.IsNullOrEmpty(_traceFile))
return;
try
{
_traceStream = File.AppendText(_traceFile);
}
catch
{
return;
}
}
lock (_writeLock)
{
try
{
_traceStream.WriteLine(traceMessage);
_traceStream.Flush();
}
catch { }
}
}
}
}