What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court).

Opinion:
WEXLER v. JANNEY et al.
No. 5988.
United States Court of Appeals Fourth Circuit.
Argued Nov. 10, 1949.
Decided Nov. 11, 1949.
Christopher T. Boland, Washington, D. C. (Richard J. Connor and Gallagher, Osherrnan, Connor & Butler, Washington, D. C., on the brief), for appellant.
Harrison L. Winter, Assistant Attorney-General of Maryland (Hall Hammond, Attorney General of Maryland, on the brief), for appellees.
Before PARKER, Chief Judge, and SOPER and DOBIE, Circuit Judges.
PER CURIAM.
This is an appeal from an order dismissing a suit against Stuart S. Janney and others, constituting the Maryland Racing Commission, asking that certain orders of the Commission be set aside. The orders involved are those referred to in the opinion of this Court in Wexler v. Maryland State Fair et al., 4 Cir., 164 F.2d 477. The suit was properly dismissed. If the orders are absolutely void, as argued by appellant, they can be collaterally attacked in t'he suit against Maryland State Fair, and the present suit against the Racing Commission for injunctive or other relief is entirely unnecessary. If the orders are not void and action on tlhe part of the Commission is necessary to set them aside, the suit must fail as one against the state forbidden by the Eleventh Amendment of the Constitution.
Affirmed.

Question: What is the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court)?

Choices:
Trial (either jury or bench trial)
Injunction or denial of injunction or stay of injunction
Summary judgment or denial of summary judgment
Guilty plea or denial of motion to withdraw plea
Dismissal (include dismissal of petition for habeas corpus)
Appeals of post judgment orders (e.g., attorneys' fees, costs, damages, JNOV - judgment nothwithstanding the verdict)
Appeal of post settlement orders
Not a final judgment: interlocutory appeal
Not a final judgment: mandamus
Other (e.g., pre-trial orders, rulings on motions, directed verdicts) or could not determine nature of final judgment
Does not fit any of the above categories, but opinion mentions a "trial judge"
Not applicable (e.g., decision below was by a federal administrative agency, tax court)

Answer: 4