Cross sections for excitation of the [$B({^{2}\ensuremath{\Sigma}_{u}}^{+})\ensuremath{-}X({^{2}\ensuremath{\Sigma}_{g}}^{+})$] first negative bands of ${\mathrm{N}}_{2}^{+}$ resulting from impact of ${\mathrm{H}}^{+}$, ${\mathrm{D}}^{+}$, ${\mathrm{He}}^{+}$, ${\mathrm{Ne}}^{+}$, and ${\mathrm{N}}^{+}$ have been measured in the energy range 10-65 keV, and at pressures such that radiation occurs much sooner than subsequent collisions of the excited molecule. Intensity ratios of bands in this system and rotational distributions in the 3914-\AA{} (0,0) and 4278-\AA{} (0,1) bands have been directly measured and compared with those obtained from electron impact. Supplementary determinations of total charge-exchange cross sections have been made. Cross sections for excitation of Balmer alpha radiation in charge-exchange collisions of ${\mathrm{H}}^{+}$ and ${\mathrm{D}}^{+}$ with ${\mathrm{N}}_{2}$ have been measured in the same energy range. Little or no increase of vibration occurs in ${\mathrm{H}}^{+}$, ${\mathrm{D}}^{+}$, and ${e}^{\ensuremath{-}}$ impact, but a definite enhancement varying with ion velocity is produced by the heavier ions ${\mathrm{He}}^{+}$, ${\mathrm{Ne}}^{+}$, and ${\mathrm{N}}^{+}$. Rotation, however, remains in a thermal distribution at room temperature.