I am new to ArcGIS and not familiar with it. I want to interpolate heights in a DEM file using ArcGIS? Is it possible? Actually, I want to write a C# code that will read the height from DEM file for given coordinates, and if the height is missing then I will perform interpolation and return the height. I want to use ArcGIS interpolation algorithms instead of writing my own.
you don't need to interpolate your dem . dem means digital elevation model . you can interpolate contours or points that have elevation field . you should use topo to raster tool in arctoolbox to convert contour to dem .