I finally found a sourcecode formatting plugin for Windows Live Writer …

…which works:

public object[] ListFiles(string filename, string username, string scopelist, string categorylist)
{
   string[] scopes = new string[0];
   if (scopelist!="")
      scopes = scopelist.Split(new char[] { ',' });
   string[] categories = new string[0];
   if (categorylist!="")
   categories = categorylist.Split(new char[] { ',' }); ;
   CDSFileInfo[] fi = GetFileList(filename, username, scopes, categories);
   object[] o = new object[fi.Length];
   fi.CopyTo(o, 0);
   return o;
}

It understands various languages, can highlight lines and has various formatting options:

<trace autoflush="true" indentsize="2">
<listeners>
<!--The RollingFile is the standard TraceListener for the IpPbx:-->
<!--initializeData= CDSClient | CDSClientUser | Default | <File>-->
<!--CDSClient:      TraceFile is <IpPbxTraceFolder>\CDSClient.<ApplicationName>.log-->
<!--CDSClientUser:  TraceFile is <My Documents>\IpPbx\CDSClient.<ApplicationName>.log-->
<!--Default:        TraceFile is <IpPbxTraceFolder>\<ApplicationName>.log-->
<!--<File>:         TraceFile is the given file-->
<clear/>
<add name="RollingFile" type="SWTracing.RollingFileTraceListener, IpPbxTracing, Version=1.0.0.0, Culture=neutral, PublicKeyToken=cf78dfa0a74454f8" initializeData="CDSClient" traceOutputOptions="ProcessId, LogicalOperationStack, Timestamp, ThreadId, Callstack, DateTime" />
</listeners>
</trace>

And the best thing is. It’s free. http://www.amergerzic.com/post/WLWSourceCodePlugin.aspx