// Update AppSetting in web config
public void UpdateAppSetting(string key, string value)
{
Configuration config = WebConfigurationManager.OpenWebConfiguration("~");
if (config.AppSettings.Settings[key] == null)
{
config.AppSettings.Settings.Add(key, value);
}
else
{
config.AppSettings.Settings[key].Value = value;
}
config.Save();
ConfigurationManager.RefreshSection("appSettings");
}
// Update connection string in web config
public void UpdateConnectionString(string key, string value)
{
Configuration config = WebConfigurationManager.OpenWebConfiguration("~");
if (config.ConnectionStrings.ConnectionStrings[key] == null)
{
config.ConnectionStrings.ConnectionStrings.Add(new ConnectionStringSettings(key, value));
}
else
{
config.ConnectionStrings.ConnectionStrings[key].ConnectionString = value;
}
config.Save();
ConfigurationManager.RefreshSection("connectionStrings");
}
You can update the contents of web.cofig file by simply calling above functions like this:-
protected void Page_Load(object sender, EventArgs e)
{
UpdateAppSetting("Country", "India");
UpdateConnectionString("dbName", "dbSchool");
}
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