The ornamental design for a tablelamp, as shown and described.
FIG. 1 is a first perspective view of a table lamp showing my new design;
FIG. 2 is a second perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is aback view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines shown in the drawings depict portions of the table lamp in which the design is embodied that form no part of the claimed design. The symbolic break shown in the drawings indicates that length of the supporting rod of the table lamp can vary.