How do I get the SQL command text when I insert a new record with Linq?

Question

      var newUser = new tblUser()
   { 
    Email = strEmail,
    Password = strPassword,
    DateBirth = DateTime.Parse(strDateBirth),
   };

   db.tblUsers.InsertOnSubmit(newUser);
   db.SubmitChanges();

I want to get the actual sql command text that linq generated.

Answer 1

db.Log is a TextWriter that you can use to get the text of the query.

db.Log = Console.Out
var newUser = new tblUser()
{ 
    Email = strEmail,
    Password = strPassword,
    DateBirth = DateTime.Parse(strDateBirth),
};
db.tblUsers.InsertOnSubmit(newUser);
db.SubmitChanges();

And it will write the query text to standard output.

Answer 2

Check this msdn article. You can use DataContext.Log property.

Answer 3

You need to set the DataContext.Log property to a writer, you can wrap a writer around a stringbuilder then after your insert response.write your stringbuilder.tostring...

                        StringBuilder sb = new StringBuilder();
       StringWriter writer = new StringWriter(sb);
       Context.Log = writer;
       ...
        DOINSERT & SUBMITCHANGES
       ...
       Response.Write(sb.ToString());