check login fields from database

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VB6

if my login table contain 3 records then how can i check the entered fields are valid

Posted 11-Feb-12 23:07pm

Bhags1992

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OriginalGriff 12-Feb-12 5:13am

Depends on what your table contains, and what your entered fields contain.
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thatraja 12-Feb-12 5:43am

Show your code

2 solutions

Solution 1

We can use LInQ code to validate the user existence as:

SQL

if (!db.Users.Any( u => u.UserName == argUser ))
{
  // Action code for valid user
}
else
{
  // Action code for in valid user
}

Posted 11-Feb-12 23:17pm

Ganesan Senthilvel

Comments

Bhags1992 12-Feb-12 5:28am

can u give another code?i cant understant this LInQ code

Aniket Yadav 12-Feb-12 5:44am

What Exactly You Want To Do Here? Can You Explain?

Bhags1992 12-Feb-12 5:48am

i have login table that contain 2 fields uname nd password in that 3 records are available i want check login for ech field

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Aniket Yadav · Accepted Answer · 2012-02-12T00:30:00

Suppose you have the user name in txtusername.text and password in txtpassword.text

So on the OK/Login Button click event, check the following

VB

Dim rsLogin AS New ADODB.RecordSet
Set rsLogin = New ADODB.RecordSet

if (txtusername.text <> "") And (txtpassword <> "") Then
    rsLogin.Open "SELECT * FROM Login WHERE Uname = '" & txtusername.text & "' AND  password = '" & txtpassword.Text & "'"
Endif

if rsLogin.EOF = True then
    msgbox "Invalid UserName Or Password", VbCritical
    txtusername.SetFocus
Else
    msgbox "Successful Login"
Endif

Hope This Will Help You To Solve Your Problem