Char the corn over a gas burner or under the broiler, turning occasionally to char on all sides. Transfer to a plate and allow to cool. Once cool enough to handle, remove the kernels from the cob by cutting carefully with a sharp knife. Discard the cob.
Toss the greens together in a large bowl. Arrange the greens on a large platter. Top the greens with the remaining ingredients in rows, excluding the dressing, if desired. (Or toss all ingredients together in a bowl.)
Drizzle the dressing over the salad, serve immediately.