Configuration File - Dynamic settings

[rf222]

Hi, I am aware off <APPSettings>, where you can define Key and Value....

However I would like to be able to have my own section in web.config, called <InputFiles>. Here would be an example:

<InputFiles>
<add name="myfile1.txt"
Regex="__(\S)"
/>
<add name="myfile2.txt"
Regex="(__\S)"
/>

</InputFiles>

1) Is it possible to use my own custom section like this with different attributes? Where would I place it in web.config?

2) How would I read it in my C# application? The number of files (myfilex.txt) can be unlimited...

Please help. Thanks

 

[vbkris]

try this link:

http://www.devhood.com/tutorials/tutorial_details.aspx?tutorial_id=90

Known is handfull, Unknown is worldfull

 

[rf222]

Thanks a lot! However I heard there may be another (simpler) way to do this in ASP 2.0. I saw same example, where class was derived from ConfigurationSection class, however it did not serve my purpose, because the format of nodes was as follows:

<orderservice attr1="blah, blah" attr2="blah" />

so I would like to have subnodes like this:

<InputFiles>
<add name="myfile1.txt"
Regex="__(\S)"
/>
<add name="myfile2.txt"
Regex="(__\S)"
/>

 

[vbkris]

oh no, u can also have sub sections dude. u need to read the web.config tutorials for this, and regarding .NET 2, i still dont have much of an idea there...

Known is handfull, Unknown is worldfull

 

[rf222]

It is very confusing on MSDN. There are several classes. I found ConfigurationSection (2.0 new class), byt not sure if I can use it with my collection:

<InputFiles>
<add name="myfile1.txt"
Regex="__(\S)"
/>
<add name="myfile2.txt"
Regex="(__\S)"
/>

</InputFiles>

Seems like it only takes care of this kind of config info:

<CustomSection fileName="default.txt" maxUsers="1000" maxIdleTime="00:15:00" />

That is a single element.... I need several dynamic, so the user can add them later. It would be a Collection....
Here is the link to the class I am taking about:

http://msdn2.microsoft.com/en-us/library/system.configuration.configurationsection(VS.80).aspx

There are other classes there too:

http://msdn2.microsoft.com/en-us/library/2a1tyt9s(VS.80).aspx

So I am not sure which one to use win ma case. Wonder if somebody was using those new classes to read config info like mine.

 

[rf222]

The tutorial you have provided is very nice, However it only reads single element. I can have several elements:

<InputFiles>
<add name="myfile1.txt" Regex="__(\S)"/>
<add name="myfile2.txt" Regex="(__\S)"/>

How do I read those? I feel I may need to return the collection...

 

[vbkris]

yeah, u have to return a collection, just give me some time so that i can cook up some code for u...

Known is handfull, Unknown is worldfull

 

[rf222]

Hi, I found some sample (net 1) and I have modified it. However seems like web.config is not calling my section handler. I put some code to generate error there, seems it is never called.... Here is web.config:



<configSections>


<section name="ErrorLogs" type="BLA.ErrLog.ErrLogConfigurationHandler, ErrLogConfiguration"/>

...

<ErrorLogs name="Input Files Configuration" tracingEnabled="true">

<add name="R:\\Applications\\MISDesktop\\Error.log" regex=""/>

<add name="GLOPENU2.TXT" regex=""/>

<add name="GTIRTNS.TXT" regex=""/>

</ErrorLogs>



Here is the code of the handler (never called...):



using

System;
using

System.Configuration;
using

System.Xml;
namespace

BLA.ErrLog {

/// <summary>

/// Summary description for ContentConfigurationHandler.

/// </summary>

public class ErrLogConfigurationHandler : IConfigurationSectionHandler {

public virtual object Create(Object parent, Object context, XmlNode node) {

ErrLogConfiguration config = new ErrLogConfiguration();
config.LoadValuesFromConfigurationXml(node);


int j = 0;

int i = 9 / j;

return config;
}

}

}


Here is another file with ErrLog Class:

using System;
using System.Configuration;
using System.Collections;
using System.Xml;
using System.Collections.Specialized;

namespace BLA.ErrLog {

public class ErrLogConfiguration {
string defaultErrLog;
string inputDirectory;
string outputDirectory;

Hashtable errLogs = new Hashtable();

public static ErrLogConfiguration GetConfig() {
return (ErrLogConfiguration)ConfigurationSettings.GetConfig("ErrLog");
}

public void LoadValuesFromConfigurationXml(XmlNode node) {
XmlAttributeCollection attributeCollection = node.Attributes;

// Get the default ErrLog
defaultErrLog = attributeCollection["defaultErrLog"].Value;
inputDirectory = attributeCollection["InputDirectory"].Value;
outputDirectory = attributeCollection["OutputDirectory"].Value;

// Read child nodes
foreach (XmlNode child in node.ChildNodes) {
if (child.Name == "ErrLogs")
GetErrLogs(child);
}
}

void GetErrLogs(XmlNode node) {
foreach (XmlNode ErrLog in node.ChildNodes) {
switch (ErrLog.Name) {
case "add" :
errLogs.Add(ErrLog.Attributes["name"].Value, new ErrLog(ErrLog.Attributes) );
break;

case "remove" :
errLogs.Remove(ErrLog.Attributes["name"].Value);
break;

case "clear" :
errLogs.Clear();
break;
}
}
}

// Properties
//
public string DefaultErrLog { get { return defaultErrLog; } }
public string InputDirectory { get { return inputDirectory; } }
public string OutputDirectory { get { return outputDirectory; } }
public Hashtable ErrLogs { get { return errLogs; } }

}

public class ErrLog {
string name;
string ErrLogType;

NameValueCollection ErrLogAttributes = new NameValueCollection();

public ErrLog (XmlAttributeCollection attributes) {

// Set the name of the ErrLog
//
name = attributes["name"].Value;

// Set the type of the ErrLog
//
ErrLogType = attributes["regex"].Value;

// Store all the attributes in the attributes bucket
//
foreach (XmlAttribute attribute in attributes) {

if ( (attribute.Name != "name") && (attribute.Name != "regex") )
ErrLogAttributes.Add(attribute.Name, attribute.Value);

}

}

public string Name {
get {
return name;
}
}

public string Type {
get {
return ErrLogType;
}
}

public NameValueCollection Attributes {
get {
return ErrLogAttributes;
}
}

}

}