qwe/qwe/bin/Debug/qwe.exe.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
    </configSections>
    <connectionStrings>
        <add name="qwe.Properties.Settings.qweConnectionString" connectionString="Data Source=DESKTOP-VQT3IJP;Initial Catalog=qwe;Integrated Security=True;Encrypt=False"
            providerName="System.Data.SqlClient" />
    </connectionStrings>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
    </startup>
</configuration>