Linqpad script to preserve comments in sqlmetal c# autogen

//Your filename goes here!
string filename = "FULLPATHTOYOURCODEFILENAME"
StreamReader r = new StreamReader(filename);
string strCmdText = string.Format(@"/server:YOURSERVERNAME /database:YOURDATABASENAME /user:YOURUSERNAME /password:YOURPASSWORD /views /code:{0} /namespace:D /context:WebData2 /pluralize",filename);
List<string> lines = new List<string>();
List<string> orglines = new List<string>();
List<TableComment> Tablecomments = new List<TableComment>();
List<Comment> comments = new List<Comment>();
//skip the first 9 lines.
for(int i = 0;i<9;i++)r.ReadLine();
string currenttable = null;
while(!r.EndOfStream)
{
    string orgline = r.ReadLine();
    string line = orgline.Replace("\t","").TrimStart(' ');
//  Console.WriteLine(line);
    lines.Add(line);
    orglines.Add(orgline);
    if(line.StartsWith("public System.Data.Linq.Table<"))
    {
        var tc = new TableComment(){
            table = line
        };
        int curr = lines.Count-2;
        while(lines[curr].StartsWith("//"))
            tc.comments.Add(orglines[curr--]);
        if(tc.comments.Count>0)
            Tablecomments.Add(tc);
    }
    if(line.StartsWith("[Table(Name="))
    {
        currenttable = line;
    }
    if(line.StartsWith("[Column("))
    {
        int curr = lines.Count-2;
        Comment c = new Comment(){table = currenttable,fieldname = line};
        while(lines[curr].StartsWith("//"))
            c.comments.Add(orglines[curr--]);
        if(c.comments.Count>0)
            comments.Add(c);
    }
}
r.Close();
//Tablecomments.Dump();

//run sqlmetal thing

var prc = System.Diagnostics.Process.Start(@"c:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\sqlmetal.exe",strCmdText);
prc.WaitForExit();

//rebuild comments.
r = new StreamReader(filename);
//Save all the comments and the next line (the function line
lines = new List<string>();
//List<TableComment> Tablecomments = new List<TableComment>();

//skip the first 9 lines.
for(int i = 0;i<10;i++)r.ReadLine();
while(!r.EndOfStream)
{
    string orgline = r.ReadLine();
    string line = orgline.Replace("\t","").TrimStart(' ');
    TableComment tc = (from b in Tablecomments.Where (p => p.table == line)
             select b).FirstOrDefault();
    if(tc!=null)
    {
        for(int i = tc.comments.Count-1;i>-1;i--)
        {
            lines.Add(tc.comments[i]);
            //Console.WriteLine(tc.comments[i]);
        }
        //Console.WriteLine(line);
    }

    if(line.StartsWith("[Table(Name="))
    {
        currenttable = line;
    }
    if(line.StartsWith("[Column("))
    {
        var c = (from b in comments where b.table == currenttable  && b.fieldname == line select b).FirstOrDefault();
        if(c!=null)
        {
            for(int i = c.comments.Count-1;i>-1;i--)
            {
                lines.Add(c.comments[i]);
            }
        }
    }
    //lines.Add(tc.comments[i]);
    //Console.WriteLine(line);
    lines.Add(orgline);
}
r.Close();
Tablecomments = null;
File.Delete(filename);
StreamWriter wr = new StreamWriter(filename);
foreach(string s in lines)
{
    wr.WriteLine(s);
}
wr.Flush();
wr.Close();