调试VS2010 SP1中的迭代器方法(使用DEBUG设置......没有编译器优化),我的变量之一操作数,“在当前上下文中不存在”,根据Quick Watch的说法即时窗口(如果我将鼠标悬停在变量上,我也不会弹出一个弹出窗口。)
变量在范围内。
关于可能导致什么或如何避免它的想法?
private IEnumerable<Answer> CreateVirtualFormulaAnswers(Question question, List<Answer> answers)
{
string[] formulaParts = question.Formula.Split(FORMULA_SPLIT, StringSplitOptions.None);
string formula = formulaParts[0].Trim();
if (formulaParts.Length != 2) throw new Exception("Formula format is incorrect: " + question.Formula);
// At this point:
// formulaParts.Length = 2
// formulaParts has a non-null string at each index
// Mouse over of "op" in VS2010 debugger does not show any popup
// Quick watch and immediate window both state: "The name 'operand' does not exist in the current context"
string operand = formulaParts[1].Trim();
string answerText = (from a in answers where a.QuestionCode == op select a.Text).SingleOrDefault();
if (answerText != null)
{
yield return new Answer()
{
/* Initialization code here based on formula */
};
}
}
答案 0 :(得分:0)
正如都铎所说,这似乎是对VS 2010 SP1的限制。
我发现操作数在代码实际使用之前不会对调试器可见,而不仅仅是超出赋值点。
具体做法是:
Debug.WriteLine(operand);
正确打印到控制台。
此外,一旦操作数由Linq语句的 where 子句进行评估,Quick Watch和Immediate Window就会突然了解它。