c# - MySqlDataReader must be closed - 


  MySqlCommand स्थिति = नया MySqlCommand ("request_status से name_ru का चयन करें जहां id = '50'", conn); MySqlDataReader dr_status = status.ExecuteReader (); dr_status.Read (); MySqlCommand सीएमडी = नया MySqlCommand (क्वेरी, conn); dt.Load (cmd.ExecuteReader ()); MySqlDataReader dr = cmd.ExecuteReader ();

त्रुटि:

MySqlDataReader पहले बंद होना चाहिए

कृपया, सहायता ...

< / Div>

आपको एक ही समय में केवल एक रीडर का उपयोग करना होगा। आप तीन का उपयोग कर रहे हैं सभी पाठकों को एक प्रयोग-ब्लॉक में लपेटें ताकि वे सभी मामलों में निपटा सकें।

ExecuteReader जो आपके एसक्यूएल को निष्पादित करता है। आपके नमूना कोड में आप एक ही एसक्यूएल तीन बार निष्पादित करते हैं जो आपके इरादे से नहीं हो सकता है।


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