Using win forms to sign in to identity server 4

var tokenResponse = await httpClient.RequestClientCredentialsTokenAsync(new ClientCredentialsTokenRequest
{
    Address = "https://identityServerUrl/connect/token",
    ClientId = "clientId",
    ClientSecret = "seeecrit"
    Scope = "address email"
});

if (tokenResponse.IsError)
{
    MessageBox.Show($"Error: {tokenResponse.Error}");
    return;
}