I want to create and program an arc map add in commend in vb.net. to calculates a measure of gender structure ((Male_pop/FEAMLE_POP)*100 in a GenderStr field. I am getting an error I have included both my code and error message I am getting. I am wondering if anyone can help me what is the problem to solve this error?
thanks
its its double!
Have you looked thru the sample ins the help?
Calculate Field examples—Help | ArcGIS for Desktop
It does have sample for VB (and python)
I am not sure the expression is the problem here.
If you just give something simple (for example ".Expression = 1.23") does the code works?