C#: Cannot write to a closed TextWriter

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C#

Dear all

I have to create error logs in my program.

i am able to write first line but afterwards it throws error " cannot write a to closed textwriter"

here is my code

System.IO.StreamWriter elog = new System.IO.StreamWriter(@"~\Logs\insert_into_table" + DateTime.Now.ToString("ddMMyyyy") + "." + DateTime.Now.ToString("hhmmss") + ".log", true);

using (elog)
{

elog.WriteLine("/************************************Logs Started*******************************************************/");
} ////this line writes well


try
{

using (elog)
{
elog.WriteLine("Connection to database open"); /// throwing exception here
elog.WriteLine("");
}

/




}

catch (Exception ee)
{
using (elog)
{
elog.WriteLine("exception occured. " + ee.Message); /// throwing exception here too

elog.WriteLine("");
}
Console.Write(ee);
}


}
}
}