使用c＃在HP云或任何Openstack Cloud上创建虚拟实例

I am using the below code to create a instance in the hp cloud(or any openstack). I am having issues with determining the base url.There could be other errors and i would appreciate anybody seeing them also. So do i find out the base url. I had a look through the hp docs but to no avail ?! Also i am unsure of how to obtain the image id, i presume the flavor is 'small' etc?I am using the below code to create a instance