Backspace delete

Now the delete in canvas is happening from the Backspace button as well as the delete button. I want to restrict it with delete button only.

Override CommandHandler.doKeyDown to handle the “Backspace” key to do what you want. That includes doing nothing as demonstrated in this code:

    $(go.Diagram, "myDiagramDiv",
        "commandHandler.doKeyDown": function() {
          const e = this.diagram.lastInput;
          if (e.key === "Backspace") return;  // or do something else?
          // otherwise call the super method to get the regular behavior

Thanks.It worked