ConfigurationManager in WPF
appsettings, c#, configurationmanager, sql, wpf
Solution
I've figured it out! I shouldn't have created a new config file. There is a default app.config file in the project. Now everything is fine.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
</configSections>
<connectionStrings>
<add name="Trackboard.Properties.Settings.TrackboardConnectionString"
connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\DATABASE\Trackboard.mdf;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
private static string ConnStr = ConfigurationManager.ConnectionStrings["Trackboard.Properties.Settings.TrackboardConnectionString"].ConnectionString;
Problem
I have a config file in a wpf project to store the connectionstring. But when I try to get AppSettings and ConnectionStrings, I get null. the WEB.config file is like this: ``` <?xml version="1.0" encoding="utf-8" ?> <configuration> <connectionStrings> <add name="Trackboard" connectionString="Data Source=(localdb)\v11.0;Initial Catalog=Trackboard;Integrated Security=True;AttachDbFileName=E:\Users\Sean\Workspace\DATABASE\Trackboard.mdf"/> </connectionStrings> <appSettings> <add key="Trackboard" value="Data Source=(localdb)\v11.0;Initial Catalog=Trackboard;Integrated Security=True;AttachDbFileName=E:\Users\Sean\Workspace\DATABASE\Trackboard.mdf"/> </appSettings> </configuration> ``` I tried in several ways: ``` W1: ConnStr = ConfigurationManager.ConnectionStrings["Trackboard"].ConnectionString; W2: ConnStr = ConfigurationManager.ConnectionStrings[0].ConnectionString; W3: ConnStr = ConfigurationManager.AppSettings["Trackboard"]; W4: ConnStr = ConfigurationManager.AppSettings[0]; ``` None of them worked. But this one worked: ``` ConnStr = @"Data Source=(localdb)\v11.0;Initial Catalog=Trackboard;Integrated Security=True;AttachDbFileName=E:\Users\Sean\Workspace\DATABASE\Trackboard.mdf"; ``` (That means I cannot use a config file, which is against my will) I need help.