HOW CAN CLOSE A LOGIN FORM WHEN ANOTHER FORM IS OPEN

Question

HAI,

I AM DEVELOPING WINDOWS APPLICATION IN VB.NET IN MY PROJECT I WANT OPEN ONE FORM WHEN THE LOGIN IS SUCCESS BUT LOGIN FORM IS STILL ALIVE I WANT CLOSE THAT LOGIN FORM AS WELL AS OPEN THE OTHER FORM WHAT IS THE SOLUTION GIVE THE RIGHT SUGGESTION IF ANY ONE HAVE IDEA ON WINDOWS APPLICATION