How to convert string to int?I know convert.ToInt32 is used.But it fail.Error is input string is not in proper format. String s1 = "12.00"
err或 is because 字符串是 12. 00 ,因为字符串是 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
首次转换字符串为整数的两倍
int a = Convert.ToInt32(Convert.ToDouble("12.00"));
或
如果您只想要整数部分, 而不是
string s= "12.00";
string[] w或ds = s.Split( . );
int a = Convert.ToInt32(w或ds[0]);
还检查在 SO 上已回答的线索 : < a href=" https://stackoverflow.com/ questions/4975613/ c- sharp- convert- string- decimal- to-int > > C# 转换字符串十进制到 Int
我喜欢这样的假设,即小数分隔符始终是一个点( . )。您最好使用 < a href="http://msdn.microsoft.com/en-us/library/system.globalization.culationinfo.invariantculture.aspx" rel="nofollow"\\\"InvariantCulture > ,其中含有一个数字格式,明确指定点为小数分隔符:
Convert.ToInt32(Convert.ToDouble("12.00", CultureInfo.InvariantCulture));
为了澄清:。当我在带有荷兰文化的PC上运行时,没有指定文化信息时,它会使用系统默认值(comma)并返回 1200 ,忽略点。
虽然它并不直接影响你的问题,但它是无法强调得足够的问题。
“ 12. 00” 是小数数, 不是整数。 整数组没有分数部分 。 在调用 < code> 之前, 请先使用 < a href=" http:// msdn. microsoft. com/ en- us/ library/ system. convert. to twonder. aspx" rel = “ nofollow”\\ code > convert. ToDouble 或类似的, 以获得浮点号, 或者将字符小数部分( < code>. < / code > 和后续内容) 从小数部分( < code> Convert. Tot32 。
字符串“ 12. 00” 是一个双倍/ 十进制值。 使用双倍. parse () 或双倍. TryParse () 或 转换. Todouble () 。
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