无法将字符串隐式转换为文本框

Question

当我构建以下两行时,我收到以下失败消息

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alt text http://www.freeimagehosting.net/uploads/eb92ef98ac.jpg

异常= message.Substring(trav + 1,expdiff - 1); ExceptionList.Add(例外);

Answer 1

Exceptions.Text = message.Substring(trav + 1, expdiff - 1);
ExceptionList.Add(Exceptions.Text);