c# - trouble with showing texture Tao-framework/OpenGl -

i using tao framework work opengl. i`m trying load texture , show on form. image seems load correctly (texture id generated , no errors occure) not shown correctly.

here code loading texture

public static class texturemanager {     static texturemanager()     {         il.ilinit();         il.ilenable(il.il_origin_set);     }      public static int loadtexture(string url)     {         int texobject = -1;           int imageid;         il.ilgenimages(1, out imageid);         il.ilbindimage(imageid);          if (il.illoadimage(url))         {               int width = il.ilgetinteger(il.il_image_width);             int height = il.ilgetinteger(il.il_image_height);               gl.glgentextures(1, out texobject);               gl.glpixelstorei(gl.gl_unpack_alignment, 1);               gl.glbindtexture(gl.gl_texture_2d, texobject);               gl.gltexparameteri(gl.gl_texture_2d, gl.gl_texture_wrap_s, gl.gl_repeat);             gl.gltexparameteri(gl.gl_texture_2d, gl.gl_texture_wrap_t, gl.gl_repeat);             gl.gltexparameteri(gl.gl_texture_2d, gl.gl_texture_mag_filter, gl.gl_linear);             gl.gltexparameteri(gl.gl_texture_2d, gl.gl_texture_min_filter, gl.gl_linear);             gl.gltexenvf(gl.gl_texture_env, gl.gl_texture_env_mode, gl.gl_replace);               gl.glteximage2d(gl.gl_texture_2d, 0, gl.gl_rgb, width, height, 0, gl.gl_rgb, gl.gl_unsigned_byte, il.ilgetdata());              il.ildeleteimages(1, ref imageid);         }         return texobject;     } } 

and code drawing it:

gl.glclear(gl.gl_color_buffer_bit | gl.gl_depth_buffer_bit);             gl.glclearcolor(255, 255, 255, 1);              gl.glloadidentity();               gl.glenable(gl.gl_texture_2d);              gl.glbindtexture(gl.gl_texture_2d, mgltextureobject);               gl.glpushmatrix();               gl.gltranslated(0, -1, -10);              gl.glrotated(rot, 0, 1, 0);               gl.glbegin(gl.gl_quads);               gl.glnormal3f(0, 0, 1);             gl.gltexcoord2f(0, 0); gl.glvertex3d(0, 0, 0);               gl.gltexcoord2f(1, 0);  gl.glvertex3d(1, 0, 0);              gl.gltexcoord2f(1, 1); gl.glvertex3d(1, 1, 0);              gl.gltexcoord2f(0, 1);  gl.glvertex3d(0, 1, 0);                gl.glend();               gl.glpopmatrix();              gl.gldisable(gl.gl_texture_2d);               ant.invalidate(); 

the form blank. if enable lightning here showed:

the image loading simple bmp image 100x100 created in paint.

the problem appeared because image in incorrect size. size of images should 64x64, 128x128 or 256x256. changed size 128x128 , worked fine.