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How to create a C# configuration file

Posted on 2010-09-07
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Last Modified: 2012-05-10
Hello,

Need to create a config file (text file) that contains metrix associated with parameters. Application design doesn't store info need a quick workaround.

Line 1- Height Metres
Line 3- Cost AUD($)
etc

Height, Weight are used for charting.  Comboboxes populated with these strings and values are double arrays.  

Should I parse the text file and insert into a Dictionary<key, value>.

Key equals the name of the parameter and Value is the metrics?

Better approach to achieve this?

Thanks AC

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Question by:AndyC1000
  • 3
3 Comments
 
LVL 16

Expert Comment

by:kris_per
ID: 33622789

One possible quickest method is: Using XmlSerializer will save lot of coding in mapping values between variables and files as shown in the code below.
public class ConfigItem

        {

            public string Name;

            public double Value;

        }



List<ConfigItem> list = new List<ConfigItem>(); // Dictionary can not be used with xmlserializer

            list.Add(new ConfigItem() { Name = "Height ", Value = 1.5 });

            list.Add(new ConfigItem() { Name = "Cost ", Value = 50.25 });



            // To save the config items to a xml file

            XmlSerializer x = new XmlSerializer(typeof(List<ConfigItem>));

            TextWriter writer = new StreamWriter("myconfig.xml");

            x.Serialize(writer, list);

            writer.Close();



            // to load config items from xml file

            XmlSerializer xs = new XmlSerializer(typeof(List<ConfigItem>));

            TextReader r = new StreamReader("myconfig.xml");

            List<ConfigItem> clist = (List<ConfigItem>)xs.Deserialize(r);

            r.Close();

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0
 
LVL 16

Expert Comment

by:kris_per
ID: 33623187
Another quick method:
Dictionary<string, double> d = new Dictionary<string, double>();

            d["Height"] = 1.5;

            d["Cost"] = 25.50;



            // To save config values in a config txt file

            TextWriter writer = new StreamWriter("myconfig.txt");

            foreach (KeyValuePair<string, double> item in d)

            {

                writer.WriteLine(item.Key + "=" + item.Value);

            }

            writer.Close();



            // To read from config txt file

            Dictionary<string, double> d2 = new Dictionary<string, double>();

            TextReader r = new StreamReader("myconfig.txt");

            while (true)

            {

                string line = r.ReadLine();

                string[] t = line.Split('=');

                d2[t[0]] = Convert.ToDouble(t[1]);

            }

            r.Close();

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0
 
LVL 16

Accepted Solution

by:
kris_per earned 250 total points
ID: 33623201
With a correction in the above code:
...

// To read from config txt file

            Dictionary<string, double> d2 = new Dictionary<string, double>();

            TextReader r = new StreamReader("myconfig.txt");

            while (true)

            {

                string line = r.ReadLine();

                if(line == null) break;

                string[] t = line.Split('=');

                d2[t[0]] = Convert.ToDouble(t[1]);

            }

            r.Close();

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