在Entity Framework中，如何获取EF翻译的sql？

Question

A example:

public void Add()
{
    TestDBEntities2 testdb = new TestDBEntities2();
    Test1 test1 = new Test1() { Name="yang"};
    testdb.Tests.Add(test1);
    testdb.SaveChanges();
}

how to use ObjectQuery.CommandText to get the SQL?

Answer 1

If you are using Entity Framework 6, then you can use Database.Log to intercept database operation. It accepts delegate which takes string parameter (database query text). Eg output of query to console will look like:

testdb.Database.Log = Console.WriteLine;
testdb.SaveChanges();

See Logging and Intercepting Database Operations