.net - C# 4.0 Optional Parameters - How to Specify Optional Parameter of Type "Guid"? -


यह मेरी विधि है: 

  सार्वजनिक शून्य कुछ सिक्युरिटी (स्ट्रिंग ईमेल = "", Guid userId = Guid.Empty) {// कुछ क्वेरी}

userId मुझे एक त्रुटि दे रहा है क्योंकि यह एक संकलन-समय स्थिर होना चाहिए, जिसे मैं समझता हूं। लेकिन जब भी मैं एक कंट्री घोषित करता हूं: 

  निजी कॉन्स्ट खाली ग्रिड = गुइड। खाली;

फिर विधि हस्ताक्षर को इसमें बदलें: 

  सार्वजनिक शून्य कुछक्यू (स्ट्रिंग ईमेल = "", ग़ायड userId = emptyGuid) {// कुछ पूछताछ करें}

अभी भी कोई प्यार नहीं।

मैं क्या याद कर रहा हूँ?

क्या आपने इसे Guid ala: 

  सार्वजनिक शून्य से एक नया उदाहरण स्थापित करने की कोशिश की है। कुछ स्ट्रिंग ईमेल =" "," ग्रिड userId = new " Guid ()) {// कुछ क्वेरी}

चाल करना चाहिए।


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