{"height":"190","description":"dobon.net double\u306b\u5909\u63db\u3067\u304d\u308b\u304b\u3067\u5224\u65ad string str = \"-12.34\"; //double\u306b\u5909\u63db\u3067\u304d\u308b\u304b\u78ba\u304b\u3081\u308b double d; if (double.TryParse(str, out d)) { //\u5909\u63db\u51fa\u6765\u305f\u3089\u3001d\u306b\u305d\u306e\u6570\u5024\u304c\u5165\u308b Console.WriteLine(\"{0} \u306f\u6570\u5024 {1} \u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002\", str, d); } else { Console.WriteLine(\"{0} \u306f\u6570\u5b57\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\", str); } //.NET Framework 1.1\u4ee5\u524d\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3059\u308b //if (double.TryParse(str, \u2026","image_url":null,"type":"rich","author_name":"shikaku","published":"2021-07-30 18:31:19","blog_url":"https://blog.systemjp.net/","provider_url":"https://hatena.blog","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.systemjp.net%2Fentry%2F2021%2F07%2F30%2F183119\" title=\"C#\u3067IsNumeric\u306e\u4ee3\u7528 - shikaku&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/shikaku/","title":"C#\u3067IsNumeric\u306e\u4ee3\u7528","version":"1.0","width":"100%","url":"https://blog.systemjp.net/entry/2021/07/30/183119","provider_name":"Hatena Blog","blog_title":"shikaku's blog"}