How did Dallas die from The Outsiders?

Answer 1

Dally knew that once he pulled a gun out that the store owner would try and shoot him, thus killing him just as Dally wanted. Dally was so consumed with grief by Johnny's death and that he believed that death was the answer

Dally wanted to die and he was using the store owner and the cops to help him achieve that. So that is why he pulled his gun out even though he knew that there was no bullets inside the chamber

Answer 2

He robbed a grocery store and he had a gun. He made a statement you're never going to get me alive. He looked like he was going to shoot the cops. Ponyboy, Sodapop, Darrel, Two-bit and Steve were running to hide him but it was too late Dallas was shot.

Answer 3

He was besieged and killed by the police.