How to resolve the error of SQL invalid object name?

I connect the database with Visual Studio 2017. When I am trying to execute a query then it shows the following error:

The connection string I am using is:

SqlConnection con = new SqlConnection("Data Source=ANUPAM-DESKTOPANUPAM;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=True;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"); 

My code:

public void exicuteDatabaseQuery(String query)
    {
        con.Open();
        SqlDataAdapter sda = new SqlDataAdapter(query, con);
        sda.SelectCommand.ExecuteNonQuery();
        con.Close();
        MessageBox.Show("Successfull");
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        int id = Convert.ToInt32(___Id_.Text);
        int number = Convert.ToInt32(___Number_.Text);
        String InsertQuery = "INSERT INTO Member (id, number) 
        values('"+id+"','"+number+"')";
        exicuteDatabaseQuery(InsertQuery);
    }

Database explorer image: