How I create model dynamically in c# at runtime

I have to create single method for performing crud operation on all my table.Like

EntitySave()
EntityUpdate()
EntityGetList()

Once this method created i want to perform all operation for all table in this method. So when i have to save data from the client side. I just have to pass the table name and filed values in parameter for save the data in that specific table.(Means I want create model at run time)