For simple values like this, there is an easier solution than the one in the duplicate questions.
Config:
<configSections>
<section name="RegCompany" type="System.Configuration.NameValueSectionHandler"/>
</configSections>
<RegCompany>
<add key="CompanyName" value="Tata Motors" />
<add key="CompanyCode" value="Tata" />
<add key="CompanyUrl" value="example.com" />
</RegCompany>
Code:
var section = ConfigurationManager.GetSection("RegCompany") as NameValueCollection;
if (section == null) {
throw new InvalidOperationException("Unknown company");
}
var company = section["CompanyName"];
var code = section["CompanyCode"];
var url = section["CompanyUrl"];