Startup networking works best when it is based on a clear purpose and mutual relevance. Collecting contacts is less useful than building relationships that lead to learning, trust or practical collaboration.
Before attending an event, decide what you hope to learn or whom you would benefit from meeting. Prepare a concise explanation of your startup, the customer problem it addresses and the kind of conversation you are seeking.
Ask thoughtful questions and listen carefully. If a potential connection is relevant, agree on a simple next step, such as sharing a resource or scheduling a focused discussion. Follow up with context rather than a generic message.