اوبالیت به بو
دوشنبه 12 بهمن 1388, 14:39 عصر
سلام
این خطا کی رخ می ده:
Page.IsValid cannot be called before validation has taken place. It should be queried in the event handler for a control that has CausesValidation=True and initiated the postback, or after a call to Page.Validate.
و باید چه کاری انجام داد؟ چیزی به ذهنم نرسید
این خطا کی رخ می ده:
Page.IsValid cannot be called before validation has taken place. It should be queried in the event handler for a control that has CausesValidation=True and initiated the postback, or after a call to Page.Validate.
و باید چه کاری انجام داد؟ چیزی به ذهنم نرسید