System Lock After consecutive login attempts

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VB

.NET

hello codeproject, this would my first post.

i have done a login form using vb .net

if the login details matched the data inside my db then the user can now proceed to another form else i declare an loginattempt than would increment every incorrect login. i have successfully implement that but now i want it to be written on my database that if the user attempt to login, my system will log his login attempts on the database. i have a hard time doing that, i need to select, and if the row is null i will insert data onto it else i would update it.