Example of refactoring at work.

bad.cs

// 0)
private void UpdateErrorResponseLog(CommandResponseElement[] array, long id)
{

    //Logging all errors and response messages returned to TOA_InboundAPI_Response_Errors table

    try{


        foreach (CommandResponseElement value in array)
        {

            if(value.report != null){

                    foreach (ReportMessageElement rm in value.report)
                    {
                        if(rm != null){
                            TOADATA.InsertTOAErrorLog(id, rm.code, rm.description, rm.type);
                        }
                    }

            }

        }

    }catch(Exception e){


    }

}

// 1)
private void SetSessionTNWithAvailableDefaultTN()
{
    WebProfile p = WebProfile.GetProfile(HttpContext.Current.User.Identity.Name, true);

    if (p.CurrentTN == "")
    {
        if (RadGrid1.Items.Count >= 1)
        {
            p.CurrentTN = RadGrid1.Items[0].Cells[2].Text.TrimEnd();
        }
        else
        {
            p.CurrentTN = "";
        }
    }
    else
    {
        //Purposely left blank.
    }

    p.Save();
}

good.cs

// 0)
private void UpdateErrorResponseLog(CommandResponseElement[] array, long id)
{
    try {
        foreach (ReportMessageElement rm in array
            .Where(x => x.report != null)
            .SelectMany(x => x.report)
            .Where(x => x!= null))
                TOADATA.InsertTOAErrorLog(id, rm.code, rm.description, rm.type);
    }
    catch {}
}

// 1)
private void SetSessionTNWithAvailableDefaultTN()
{
    WebProfile p = WebProfile.GetProfile(HttpContext.Current.User.Identity.Name, true);

    if (string.IsNullOrEmpty(p.CurrentTN) && RadGrid1.Items.Count > 0)
        p.CurrentTN = RadGrid1.Items[0].Cells[2].Text.TrimEnd();

    p.Save();
}