从富文本框中删除单词的最佳方法是什么? [英] what is the best way to remove words from richtextbox?

问题描述

*强文本我有一个 RichTextBox，我喜欢搜索以 Hello Worlds 开头并包含HERE"的句子行.并以 ; 结尾半列比我喜欢只删除 "HERE". .我的句子，下面的例子只有一行句子，但句子可能有两行长，所以条件应该以Hello Worlds开头，以;结尾.半列比删除 "HERE".*

*strong textI have a richTextBox and like to search the line of sentence that starts with Hello Worlds and Contains "HERE". and end with ; semi-column than I like to delete only "HERE". . My sentence, below example is only one line of sentence, but sentence may be 2 lines long, so condition should be start with Hello Worlds and ends with ; semi-column than remove "HERE".*

我的一句话:

Hello Worlds the weather is too hot "HERE"."IN" CANADA!;

我的两行句子可能是这样的:

Hello Worlds the weather is too hot "HERE"."IN" CANADA!. But we are still like it;

结果应该是一行:

 Hello Worlds the weather is too hot "IN" CANADA!;

结果应该是 2 行:

Hello Worlds the weather is too hot "IN" CANADA!. But we are still like it;

好吧，我坚持我的代码:

well I stuck on my code:

                   List<string> rt = new List<string>();
                        foreach (string line in richTextBox1.Lines)
                        {
                            if (line.StartsWith("Hello Worlds") && line.Contains("HERE"))
                            {
                               //remove "HERE".
                            }
                        }

推荐答案

你可以这样做

string[] lines = richTextBox1.Lines;
List<string> linesToAdd = new List<string>();
string filterString = "\"HERE\".";
foreach (string s in lines)
{
    string temp = s;
    if (s.StartsWith("Hello Worlds") && s.EndsWith(";") && s.Contains(filterString))
       temp = s.Replace(filterString, string.Empty);
    linesToAdd.Add(temp);
 }
 richTextBox1.Lines = linesToAdd.ToArray();     

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