1.On the
Debug menu, point to Windows, and then
click Disassembly if the Disassembly window is not already
visible. You need to be in a debug session for this option to be visible.
2.In the Disassembly
window, click a line of code, and then click Toggle Breakpoint on
the Debug menu.
—or—
Right click
a line of code, and then select Insert Breakpoint.