C# - Read / Write Data to App.Config file in a specific directory

Hi ;

You should be able to get an instance of the configuration object and use that to access the section of the config file. Please see this Microsoft doc which has an example. ConfigurationManager.OpenMappedExeConfiguration Method (ExeConfigurationFileMap, ConfigurationUserLevel, Boolean)

That is what I thought.  I tried that.

 Configuration config = ConfigurationManager.OpenExeConfiguration(sConfig);

key = config.AppSettings[ReportName];

Select allOpen in new window

However for "config.AppSettings" I receive an error

ConfigurationElement.this[Configuration.Property] is inaccessible due to its protection level.

For sConfig I'm passing in like "C:\MyDir\App.config".

Below is my Code.  Still receiving an error.

string key = string.Empty;
string sConfig = string.Empty;

Files files = new Files();
sConfig = Path.Combine( files.ReturnSaveLocation(), @"App.Config");

Configuration config = ConfigurationManager.OpenExeConfiguration(sConfig);
ExeConfigurationFileMap configFile = new ExeConfigurationFileMap();
configFile.ExeConfigFilename = sConfig;
Configuration mConfig = ConfigurationManager.OpenMappedExeConfiguration(configFile, ConfigurationUserLevel.None, true);

string s = aem.ReportName;
key = mConfig.AppSettings[s];  //Receiving error here.  Inaccessible due to protection level.

Select allOpen in new window

Having issues with the app.config.  Looking at just reading/writing to XML.

Is there a way to read write to XML so I can have similar result?

<key=1>  <value=123>
<key=2>  <value=abc>

I want to be able to check to see if key 1 exists and if it doesn't add it to the XML file along with it't value and so on.

Thanks.

Hope this makes sense.  Check the xml for Key value 3.

<?xml version="1.0" encoding="utf-8"?>
<Reports>
    <report>
        <key>1</>
        <value>123</value>
    </report>
    <report>
        <key>2</>
        <value>abc</value>
    <report>
</Reports>

Select allOpen in new window

if it doesn't exist then add it.

<?xml version="1.0" encoding="utf-8"?>
<Reports>
    <report>
        <key>1</>
        <value>123</value>
    </report>
    <report>
        <key>2</>
        <value>abc</value>
    </report>
    <report>
        <key>3</>
        <value>12ab</value>
    </report>
</Reports>

Select allOpen in new window

If it does exist then update it

<?xml version="1.0" encoding="utf-8"?>
<Reports>
    <report>
        <key>1</>
        <value>123</value>
    </report>
    <report>
        <key>2</>
        <value>abc</value>
    </report>
    <report>
        <key>3</>
        <value>ab12</value>
    </report>
</Reports>

Select allOpen in new window

This is what I was able to come up with so far.

    public class XML
    {
        public string ReadXML(string key)
        {
			bool found = false

			return found;
        }

        public bool WriteXML(string sKey, string sValue)
        {
            Files file = new Files();
            string saveLocation = file.ReturnSaveLocation();
            string xml = string.Empty;

            xml = Path.Combine(saveLocation, "Reports.xml");

            XmlDocument doc = new XmlDataDocument();
            doc.Load(xml);

            XmlNamespaceManager namespaces = new XmlNamespaceManager(doc.NameTable);
            namespaces.AddNamespace("Reports", "http://www.w3.org/2001/XMLSchema");

            XmlNode nextNode = doc.SelectSingleNode("/Reports", namespaces);

            XmlElement report = doc.CreateElement("Export");

            XmlElement key = doc.CreateElement("Key");
            key.InnerText = sKey;

            XmlElement value = doc.CreateElement("Value");
            value.InnerText = sValue;

            nextNode.AppendChild(key);
            key.AppendChild(value);

            doc.Save(xml);

            return true;
        }
    }

Select allOpen in new window

It is inserting key and value but not correctly.  It is inserting it as

<key>1<value>123</value</key>

Can't get <report> added.  Don't know if I need to or not.  

Any suggestions?

Thanks so much.  The code is cleaner and easier to understand also.

Not a problem CipherIS, glad I was able to help.