Adding a Product to the Cart via Querystring using SKU
I tried above code at localhost but its not working in magento 1.9 as well magento 1.7
can anyone help me to resolve this issue in magento 1.9
I tried everything that you mentioned in post but could not success.
copied all three files and add one file for modules in app/etc/modules/Csr_Chekout.xml to for active extension but its not working