我在String.Replace（）方法中遇到问题 [英] i have problem in String.Replace() method

问题描述

嗨


我在中遇到问题> String.Replace（）方法



a.set（a_Value，comment = a_Comment'，report = 0，format ='％s'）



如果我使用Replace方法在上面的字符串中替换a，它在String中的每个位置替换a但我只需要替换a而不是a_Value和a_Comment..

Hi
I have problem in String.Replace() method

"a.set(a_Value, comment= a_Comment', report= 0, format= '%s')"

If I use Replace method in above string to replace "a", it replace "a" every where in String but I need to replace only "a" not "a_Value" and "a_Comment" ..

推荐答案

为什么不直接替换a。用x。或者用什么来替换它？

Why not just replace "a." with "x." or whatever you need to replace it with?

然后替换不适合你 - 使用IndexOf和Substring手动替换数据，或使用Regex进行更复杂的模式匹配和更换。



从你的简短说明中很难说，但如果你想改变：

Then Replace is not for you - either use IndexOf and Substring to replace the data manually, or use a Regex to do a more sophisticated pattern matching and replacement.

From your brief description it is difficult to tell, but if you want to change:

a.set(a_Value, comment= a_Comment', report= 0, format= '%s')

To

To

Replaced.set(a_Value, comment= a_Comment', report= 0, format= '%s')

然后这可能会这样做：

Then this might do it:

Regex reg = new Regex("\\w+(?=\\.set)");
string result = reg.Replace(InputText,"Replaced");

但是很难从单个输入示例中判断出没有输出样本。

But it's difficult to tell from a single example of the input with no output samples.

Hi

Hi

var myString = "a.set a.set(a_Value, comment= a_Comment', report= 0, format= '%s')";

//If you want to replace only 'a.' to something else like 'b.':
var replaced = myString.Replace("a.", "b.");


//If you want to replace all 'a's except 'a_':

var sb = new StringBuilder();

for(var i =0;i<mystring.length;i++)>
{
    var c = myString[i];

    if (c=='a' && i < myString.Length - 1 && myString[i + 1]!= '_')
    {
        c = 'b';
    }
    sb.Append(c);
}

replaced = sb.ToString();

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