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信息: <blockquote data-quote="JohnH" data-source="post: 161" data-attributes="member: 4">You have declared the method static, read about static for example here: <a href="http://msdn.microsoft.com/en-us/library/98f28cdx%28v=VS.100%29.aspx">static (C# Reference)</a>Basically a static method can not access instance members of a class, for that it would need an object reference of the class.Why would you declare an event handler for an object instance static?which is given by code lineis expecting the second part of the ?: operator in conditional expression, see <a href="http://msdn.microsoft.com/en-us/library/ty67wk28%28v=VS.100%29.aspx">?: Operator (C# Reference)</a>?? operator would have been more convenient code-wise, but unfortunately TextBox.Text property returns an empty string when not set and not a null reference.</blockquote>

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