How to change password using access as database?

[dexter delleva]

please can anyone help me?
im currently working in a project and i already made a code for the login, the only thing is that i dont know how to update the records(Username/Password) in access using VB 2010. well i can update by manually changing the content of my table but i like to have it change using an interface in my vb named Manage account...

thank you in advance.

[timr30017]

Hey!

I don't know if you mean you want to change the username/passwords that are or can be integrated with Access by enabling security or if you have a table that contains username and passwords.

If it is the later case then you should be able to do something like so by adding a DataBindingSource to your form you use to Manage account.

 Me.SettingsBindingSource.MoveFirst()
                Me.SettingsBindingSource.RemoveCurrent()
                Me.Validate()
                Me.SettingsBindingSource.EndEdit()
                Me.TableAdapterManager.UpdateAll(Me.RecruitingDataSet)
                Me.SettingsBindingSource.AddNew()

You will just need to modify this code a bit above to find the correct user then delete their username/password and add it back using the Addnew method.

Then be sure to do this:

 Me.Validate()
                Me.SettingsBindingSource.EndEdit()
                Me.TableAdapterManager.UpdateAll(Me.RecruitingDataSet)
            Else
                MessageBox.Show("The passwords do not match - please try again.")
            End If

[dexter delleva]

i do have a table that contains username and password. and there are 3 default username and password that can be use to login. if i were the Admin(one of the user) i can login using the default password for the username admin and at the same time to enforce security i can update or change may accounts password.

thanks for your reply. I'll try this.

[dexter delleva]

im confuse, how can i compare the if statement in the code directly to password only.
" if me.validate () = ? then
Me.SettingsBindingSource.EndEdit() Me.TableAdapterManager.UpdateAll(Me.RecruitingData Set)"

is my logic right?? sorry for not understanding well, im not really good in coding^^

[timr30017]

No what you want to find and compare is the record you want to change so if say the user name is admin you will do something like the following. But the trick I used was to put a textbox field on the form. IF you don't want the user to see it so your app stays all 'pretty' just either change all the colors to the same as the form's background OR hide it (send to back) behind another control on the form. Then:

let's say your admin name is displayed in textbox1 and your hidden textbox is called textbox2 - oh and use one more to put the new password into or ever how you might want to do this.

if textbox1.text = textbox2.text then
                Me.SettingsBindingSource.RemoveCurrent()
                Me.Validate()
                Me.SettingsBindingSource.EndEdit()
                Me.TableAdapterManager.UpdateAll(Me.YourDataSourceNameHERE)
end if
' now add your new record back
        Me.SettingsBindingSource.AddNew()
        textbox2.text = "adminuser"        
        textbox3.text = "mynewpassword"
        Me.Validate()
        Me.SettingsBindingSource.EndEdit()
        Me.TableAdapterManager.UpdateAll(Me.YourDataSourceNameHERE)
 

This isn't the prettiest way to do this but this is exactly how I hide what is going on behind the scenes when I encrypt a username, product key, and activation code when the user actually activates my software.

It is kind of quirky but this is what I came up with late one night after working on some code to do ALL the above for like 9 hrs.

[timr30017]

oh i forgot one thing. Instead of just

END IF

do

ELSE ' this not the right record
settingsbindingsource.movenext()
END IF

But now thinking about it you will want to use a while statement or some kind of loop to ensure you get to the right record you want to change.

[dexter delleva]

does the "Me.YourDataSourceNameHERE" signifies the dataadapter??
im going to try this... btw ive been working on a code i found on other sources and tried it but cant seem to figure out whats wrong.

this is the code:

Dim i, rwno As Integer
Dim colname As String
Dim value As Object
colname = "Password"
rwno = 0
value = TextBox3.Text
Try

''Update the column in the Student table. _Museum_finalDataSet11.Tables(0).Rows(1).Item(colu mnName:=colname) = value
'Update the Student table in the testdb database.
i = LoginTableAdapter1.Update(_Museum_finalDataSet11)
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
'Displays number of rows updated.
MessageBox.Show("no of rows updated=" & i)

[dexter delleva]

does the "Me.YourDataSourceNameHERE" signifies the dataadapter??
im going to try this... btw ive been working on a code i found on other sources and tried it but cant seem to figure out whats wrong.

message box appears saying that "there is no row at position 1" but the password column in my table is row 1.

this is the code:
[list][*]Dim i, rwno As Integer[*] Dim colname As String[*] Dim value As Object[*] colname = "Password"[*] rwno = 0[*] value = TextBox3.Text[*] Try[*] [*] ''Update the column in the Login table.

• _Museum_finalDataSet11.Tables(0).Rows(1).Item(colu mnName:=colname) = value
  
• 'Update the login table in the Museum-final database.
  
• i = LoginTableAdapter1.Update(_Museum_finalDataSet11)
• Catch ex As Exception
• MessageBox.Show(ex.Message)
• End Try
• 'Displays number of rows updated.

MessageBox.Show("no of rows updated=" & i)

[dexter delleva]

i really find it hard to understand.. im sorry. but i'll keep trying until i got it right.^^ tnx

[dexter delleva]

finally found a way how to change the password... tnx!