在C#net的约会线上,
到目前为止,我使用的是:
string.Replace(@"","-")
但它还没有完成替换工作,有人能帮忙吗?
在C#net的约会线上,
到目前为止,我使用的是:
string.Replace(@"","-")
但它还没有完成替换工作,有人能帮忙吗?
stringing. replace
不修改字符串本身, 但返回新的字符串, 很可能您要丢弃新的字符串。 代之以这样做 :
myString= myString.Replace(@"","-");
顺便提一句,这种操作通常在手动用格式化的日期字符串乱涂的代码中看到。 在大多数情况下,做你想做的事( 也就是? ) 比做这种事情有更好的方法。
因为他们都说你需要拿回变量中的值。
因此,它应该是
val1= val1.Replace(@"","-");
或
val1= val1.Replace("\","-");
不仅如此,下面的一个人是行不通的
val1.Replace(@"","-");
用这种方式
oldstring = oldstring.Replace(@"","-");
查找 String. replace
返回类型。
它的函数返回一个已校正的字符串。 如果它只是更改了旧字符串, 那么它就会有一个 < code> 避免 返回类型 。
您也可以使用 :
myString = myString.Replace( \ , - ));
但只是让你知道,日期鞭笞通常是远期鞭笞/
,而不是反鞭笞。
正如其他人建议的那样,字符串. replace 不更新原始字符串对象, 但返回新的字符串 。
myString= myString.Replace(@"","-");
值得你理解的是,字符串在 C# 中是不可更改的, 基本上是为了让它变得安全。 关于字符串的更多细节以及为什么这些字符串是不可更改的, 请参看链接 < a href="http://msdn.microsoft.com/ en- us/library/ 362314fe. aspx" rel= “ nofollow noreferrer" >这里 a> 和 < a href=" https://stackoverflow.com/ questions/2365272/ whis- net-string-is-immomobliable"。 < a>
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