string 在 C# 中使用 Linq 替换字符串
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string replace using Linq in c#
提问by GaneshT
public class Abbreviation
{
public string ShortName { get; set; }
public string LongName { get; set; }
}
I have a list of Abbreviation objects like this:
我有一个像这样的缩写对象列表：
List abbreviations = new List();
abbreviations.add(new Abbreviation() {ShortName = "exp.", LongName = "expression"});
abbreviations.add(new Abbreviation() {ShortName = "para.", LongName = "paragraph"});
abbreviations.add(new Abbreviation() {ShortName = "ans.", LongName = "answer"});
string test = "this is a test exp. in a para. contains ans. for a question";
string result = test.Replace("exp.", "expression")
...
I expect the result to be: "this is a test expression in a paragraph contains answer for a question"
我希望结果是：“这是一个段落中的测试表达式，包含一个问题的答案”
Currently I am doing:
目前我正在做：
foreach (Abbreviation abbreviation in abbreviations)
{
test = test.Replace(abbreviation.ShortName, abbreviation.LongName);
}
result = test;
Wondering if there is a better way using a combination of Linq and Regex.
想知道是否有更好的方法使用 Linq 和 Regex 的组合。
回答by p.campbell
If you really wanted to shorten your code, you could use the ForEachextension method on the List:
如果你真的想缩短你的代码，你可以使用ForEach扩展方法List：
abbreviations.ForEach(x=> test=test.Replace(x.ShortName, x.LongName));
回答by Mike Cole
You could use the ForEach method. Also, a StringBuilder should make the operations on your string more efficient:
您可以使用 ForEach 方法。此外， StringBuilder 应该使对字符串的操作更有效：
var test = new StringBuilder("this is a test exp. in a para. contains ans. for a question");
abbreviations.ForEach(abb => test = test.Replace(abb.ShortName, abb.LongName));
return test.ToString();
回答by rejo
Try this one
试试这个
TestList.ForEach(x => x.TestType.Replace("", "DataNotAvailable"));
or the one below
或者下面那个
foreach (TestModel item in TestList.Where(x => x.ID == ""))
{
item.ID = "NoDataAvailable";
}
