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Dim connection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Application.StartupPath & "/ogrenciTakipProgramı.mdb")
Function kullaniciAdiveSifreKontrol()
Dim command As New OleDbCommand("select * from Kullanicilar where KullaniciAdi = @kadi and Sifre = @sifre", connection)
command.Parameters.Add("@kadi", OleDbType.Char).Value = txt_kullaniciAdi.Text
command.Parameters.Add("@sifre", OleDbType.Char).Value = txt_sifre.Text
Dim adapter As New OleDbDataAdapter(command)
Dim tablo As New DataTable()
adapter.Fill(tablo)
If txt_kullaniciAdi.Text.Trim() = "" Or txt_kullaniciAdi.Text.Trim().ToLower() = "KullaniciAdi" Then
MessageBox.Show("Kullanıcı adınız yanlış, lütfen tekrar deneyin!")
ElseIf txt_sifre.Text.Trim() = "" Or .txt_sifre.Text.Trim().ToLower() = "Sifre" Then
MessageBox.Show("Şifreniz yanlış, lütfen tekrar deneyin!")
Else
If tablo.Rows.Count() <= 0 Then
MsgBox("Kullanıcı adı ve şifreniz yanlış, lütfen tekrar deneyin!", MsgBoxStyle.Critical, "Hata")
txt_kullaniciAdi.Clear()
txt_sifre.Clear()
Else
"Buraya doğru kullanıcı adı ve şifre girilirse ne olacağını yaz"
End If
End If
Return tablo
End Function
NOT: FONKSİYON OLARAK YAZDIM, GİRİŞ YAP BUTONUNUN CLICK EVENTINE YAZABİLİRSİN. [kullaniciAdiveSifreKontrol()]
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