C# XML文件中的C正则表达式_C#_Regex_Xml

C# XML文件中的C正则表达式

c# regex xml

C# XML文件中的C正则表达式,c#,regex,xml,C#,Regex,Xml,我有一个XML文件，多次包含以下字符串：请尝试以下操作： using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.IO; namespace ConsoleApplication1 { class Program { const string F

我有一个XML文件，多次包含以下字符串：

请尝试以下操作：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.txt";
        static void Main(string[] args)
        {
            string input = File.ReadAllText(FILENAME);

            string pattern = @"(?'start'@\()(?'middle'[^\)]+)(?'end'\))";

            string output = Regex.Replace(input, pattern, "${middle}");

        }
    }
}

这是使用您的数据的输出

<?xml version="1.0" encoding="ISO-8859-1" ?>
<Alarms>
<AlarmList>
<Alarm>
<Name Device="" Variable="" Area="1" ThresholdExclusive="0" Enabled="1" OnQualityGood="1" VariableDuration="0" EnableVariable="" EnableDispMsg="" Hysteresis="0" EventsCache="1024"></Name>
<ThresholdList>
<Threshold>
<Name Area="" Title="My - Searched - String" Help="" DurationFormat="" ReadAccessLevel="4294901760" WriteAccessLevel="4294901760">On</Name>
<Execution Condition="2" Threshold="1" ThresholdVar="" ThresholdLow="0" ThresholdVarLow="" VariableStatus="" Severity="10" SeverityVar="" SecDelay="0" RunCommandAtServer="0"/>
<Commands/>
<CommandsOn/>
<CommandsAck/>
<CommandsReset/>
<CommandsOff/>
<Style BackColor="4294967295" TextColor="65535" BlinkBackColor="4294967295" BlinkTextColor="4294967295" Print="1" Log="1" BlinkOnNewAlarm="0" VarTimeStamp="0" SupportAck="0" SupportReset="0" SupportResetConditionOn="0" BmpFile="" SndFile="" BeepEnabled="0" SpeechEnabled="0" RepeatSpeechEverySec="0" EnableSpeechVariable="" PlaysoundContinuosly="0" CommentOnAck="0"/>
<Recipient Attachment="" DispatchingText=""/>
<SendEmail SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendVoice SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendSMS SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendFax SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendAdminAlert SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendMessenger SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<ScriptCode StartSel="0" SelLength="0" OutStatusBar="1" OutLog="1" OutPrinter="1">
</ScriptCode>
</Threshold>
</ThresholdList>
</Alarm>
</AlarmList>
</Alarms>

对jdweng最后一条评论的答复：

是的，我试过你的代码。我也试着把它和Tim的答案混在一起，Tim说要使用XDocument。我现在尝试的是：

            XmlReader xr = new XmlTextReader(Globals.AlrFile);

            lblMatches.Text = "";
            while (xr.Read())
            {
                if(xr.NodeType == XmlNodeType.Element)
                {
                    if(xr.AttributeCount > 0)
                    {
                        while(xr.MoveToNextAttribute())
                        {
                            string input = Convert.ToString(xr.Value);
                            string pattern = @"(?'start'@\()(?'middle'[^\)]+)(?'end'\))";
                            string output = Regex.Replace(input, pattern, "${middle}");

                            File.AppendAllText(Globals.AlrFileNeu, output + Environment.NewLine);
                        }
                    }
                }
            }

            xr.Close();

但我的xml输入是：

<?xml version="1.0" encoding="ISO-8859-1" ?>
<Alarms>
<AlarmList>
<Alarm>
<Name Device="" Variable="" Area="1" ThresholdExclusive="0" Enabled="1" OnQualityGood="1" VariableDuration="0" EnableVariable="" EnableDispMsg="" Hysteresis="0" EventsCache="1024"></Name>
<ThresholdList>
<Threshold>
<Name Area="" Title="@(My) - @(Searched) - @(String)" Help="" DurationFormat="" ReadAccessLevel="4294901760" WriteAccessLevel="4294901760">On</Name>
<Execution Condition="2" Threshold="1" ThresholdVar="" ThresholdLow="0" ThresholdVarLow="" VariableStatus="" Severity="10" SeverityVar="" SecDelay="0" RunCommandAtServer="0"/>
<Commands/>
<CommandsOn/>
<CommandsAck/>
<CommandsReset/>
<CommandsOff/>
<Style BackColor="4294967295" TextColor="65535" BlinkBackColor="4294967295" BlinkTextColor="4294967295" Print="1" Log="1" BlinkOnNewAlarm="0" VarTimeStamp="0" SupportAck="0" SupportReset="0" SupportResetConditionOn="0" BmpFile="" SndFile="" BeepEnabled="0" SpeechEnabled="0" RepeatSpeechEverySec="0" EnableSpeechVariable="" PlaysoundContinuosly="0" CommentOnAck="0"/>
<Recipient Attachment="" DispatchingText=""/>
<SendEmail SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendVoice SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendSMS SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendFax SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendAdminAlert SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendMessenger SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<ScriptCode StartSel="0" SelLength="0" OutStatusBar="1" OutLog="1" OutPrinter="1">
</ScriptCode>
</Threshold>
</ThresholdList>
</Alarm>
</AlarmList>
</Alarms>

我的问题是，我只需要Title属性中间的文本，而且我有多个报警元素要处理。

是否使用RegEx搜索XML？IMO，最好将XML转储到XDocument中，将代码段中的字符串提取到集合中，它们是Title属性的值，然后对集合中的字符串执行正则表达式。您需要显示您已尝试的内容，提供足够的代码来复制您的问题，请看“如何提问”部分。谢谢你的回答，但我的问题是我不知道字符串是什么样子，它们总是不同的。你试过代码了吗？我只是删除@和结束语。我刚用你的绳子测试过。输入可以是任何内容。是的，我必须遍历文件，其中在搜索字符串之前和之后是其他属性。显然，您没有尝试代码，如果您尝试了，您会看到它是有效的。我认为您需要阅读关于RegEx的文档才能真正理解我所做的事情：我用您的xml文件更新了我的代码。代码是有效的。看看我的输出，你不需要使用XDocument。您将结果附加到原始结果上，结果变得一团糟。看看我在上面发布的结果。

            XmlReader xr = new XmlTextReader(Globals.AlrFile);

            lblMatches.Text = "";
            while (xr.Read())
            {
                if(xr.NodeType == XmlNodeType.Element)
                {
                    if(xr.AttributeCount > 0)
                    {
                        while(xr.MoveToNextAttribute())
                        {
                            string input = Convert.ToString(xr.Value);
                            string pattern = @"(?'start'@\()(?'middle'[^\)]+)(?'end'\))";
                            string output = Regex.Replace(input, pattern, "${middle}");

                            File.AppendAllText(Globals.AlrFileNeu, output + Environment.NewLine);
                        }
                    }
                }
            }

            xr.Close();

<?xml version="1.0" encoding="ISO-8859-1" ?>
<Alarms>
<AlarmList>
<Alarm>
<Name Device="" Variable="" Area="1" ThresholdExclusive="0" Enabled="1" OnQualityGood="1" VariableDuration="0" EnableVariable="" EnableDispMsg="" Hysteresis="0" EventsCache="1024"></Name>
<ThresholdList>
<Threshold>
<Name Area="" Title="@(My) - @(Searched) - @(String)" Help="" DurationFormat="" ReadAccessLevel="4294901760" WriteAccessLevel="4294901760">On</Name>
<Execution Condition="2" Threshold="1" ThresholdVar="" ThresholdLow="0" ThresholdVarLow="" VariableStatus="" Severity="10" SeverityVar="" SecDelay="0" RunCommandAtServer="0"/>
<Commands/>
<CommandsOn/>
<CommandsAck/>
<CommandsReset/>
<CommandsOff/>
<Style BackColor="4294967295" TextColor="65535" BlinkBackColor="4294967295" BlinkTextColor="4294967295" Print="1" Log="1" BlinkOnNewAlarm="0" VarTimeStamp="0" SupportAck="0" SupportReset="0" SupportResetConditionOn="0" BmpFile="" SndFile="" BeepEnabled="0" SpeechEnabled="0" RepeatSpeechEverySec="0" EnableSpeechVariable="" PlaysoundContinuosly="0" CommentOnAck="0"/>
<Recipient Attachment="" DispatchingText=""/>
<SendEmail SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendVoice SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendSMS SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendFax SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendAdminAlert SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<SendMessenger SendON="0" SendACK="0" SendRESET="0" SendOFF="0"/>
<ScriptCode StartSel="0" SelLength="0" OutStatusBar="1" OutLog="1" OutPrinter="1">
</ScriptCode>
</Threshold>
</ThresholdList>
</Alarm>
</AlarmList>
</Alarms>

1
0
1
1
0


0
1024

My - Searched - String


4294901760
4294901760
2
1

0


10

0
0
4294967295
65535
4294967295
4294967295
1
1
0
0
0
0
0


0
0
0

0
0


0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1