TextChanged

[Nice Chap]

TextBox.TextCha nged Event fires even when the text is changed
programatically . How can I detect that the text has been changed by the user
and not changed programatically ?

Thanks

[Peter Proost]

Re: TextChanged

Hi look at the

Keydown or keyup event

Greetz Peter


"Nice Chap" <NiceChap@Plasm aDyne.com> schreef in bericht
news:e8BWVqDPFH A.3076@tk2msftn gp13.phx.gbl...[color=blue]
> TextBox.TextCha nged Event fires even when the text is changed
> programatically . How can I detect that the text has been changed by the[/color]
user[color=blue]
> and not changed programatically ?
>
> Thanks
>
>[/color]

[Cor Ligthert]

Re: TextChanged

Nice Chap,

Two ways.
Set a Boolean switch to evaluate that in the event
or
delete the handler when you do it programmaticall y

When you do it programmaticall y (and set it (back) afterwards)

I hope this helps,

Cor

[Herfried K. Wagner [MVP]]

Re: TextChanged

"Nice Chap" <NiceChap@Plasm aDyne.com> schrieb:[color=blue]
> TextBox.TextCha nged Event fires even when the text is changed
> programatically . How can I detect that the text has been changed by the
> user and not changed programatically ?[/color]

You may want to set a flag (for example, by setting the control's 'Tag'
property) before changing the value programmaticall y and check this flag in
the 'TextChanged' event handler.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Cor Ligthert]

Re: TextChanged

Herfried,
[color=blue]
>You may want to set a flag (for example, by setting the control's 'Tag'
>property)[/color]

Is using that tag for that an idea from VBCom (I saw Larry once doing that),
I don't see the benefit from it.

However maybe can you explain that too me(serious)

Cor

[Herfried K. Wagner [MVP]]

Re: TextChanged

"Cor Ligthert" <notmyfirstname @planet.nl> schrieb:[color=blue][color=green]
>>You may want to set a flag (for example, by setting the control's 'Tag'
>>property)[/color]
>
> Is using that tag for that an idea from VBCom (I saw Larry once doing
> that), I don't see the benefit from it.
>
> However maybe can you explain that too me(serious)[/color]

Using the 'Tag' property might be easier because you don't need any
additional private variables. However, it's one of many possible solutions
and its up to personal preference whether to use 'Tag' or not.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Cor Ligthert]

Re: TextChanged

Herfried,

I find (and found it forever) wrong to use datafields that have no
descriptive names only to save 1 machineword. (that forever was a while
after the time that I was using relays, however than we could not give that
relay a descriptive name). However it sounds for me a behaviour from that
time.

I hope you agree that.

Cor

[Don]

Re: TextChanged

Don't forget the MouseDown/MouseUp events, in case the user pastes text by
right-clicking and selecting Paste on the popup menu (if any).


"Peter Proost" <pproost@nospam .hotmail.com> wrote in message
news:%23gbvItDP FHA.3076@tk2msf tngp13.phx.gbl. ..[color=blue]
> Hi look at the
>
> Keydown or keyup event
>
> Greetz Peter
>
>
> "Nice Chap" <NiceChap@Plasm aDyne.com> schreef in bericht
> news:e8BWVqDPFH A.3076@tk2msftn gp13.phx.gbl...[color=green]
> > TextBox.TextCha nged Event fires even when the text is changed
> > programatically . How can I detect that the text has been changed by the[/color]
> user[color=green]
> > and not changed programatically ?
> >
> > Thanks
> >
> >[/color]
>
>[/color]

[95isalive]

Re: TextChanged

Ok, I've read all of the other responses, but I have to ask: "Why do you have to tell it
to do anything."

Simply Dim a "global" variable as a string and then do this:

Private Sub TextBox1_TextCh anged(ByVal sender As System.Object, ByVal e As _
System.EventArg s) Handles TextBox1.TextCh anged

myvariable = TextBox1.Text

End Sub

it detects any changes.

Or is there something wrong with doing this.??


--
Steve Easton
Microsoft MVP FrontPage
95isalive
This site is best viewed......... .........
............... ............... .with a computer

"Nice Chap" <NiceChap@Plasm aDyne.com> wrote in message
news:e8BWVqDPFH A.3076@tk2msftn gp13.phx.gbl...[color=blue]
> TextBox.TextCha nged Event fires even when the text is changed
> programatically . How can I detect that the text has been changed by the user
> and not changed programatically ?
>
> Thanks
>
>[/color]

[Herfried K. Wagner [MVP]]

Re: TextChanged

"95isalive" <admin@95isaliv e.com> schrieb;[color=blue]
> Ok, I've read all of the other responses, but I have to ask: "Why do you
> have to tell it
> to do anything."
>
> Simply Dim a "global" variable as a string and then do this:
>
> Private Sub TextBox1_TextCh anged(ByVal sender As System.Object, ByVal e As
> _
> System.EventArg s) Handles TextBox1.TextCh anged
>
> myvariable = TextBox1.Text
>
> End Sub
>
> it detects any changes.
>
> Or is there something wrong with doing this.??[/color]


Well, the OP wants tol execute the code 'myvariable = TextBox1.Text' only if
the text has been changed by the user and not when it was changed
programmaticall y.

\\\
Private Sub TextBox1_TextCh anged( _
ByVal sender As Object, _
ByVal e As EventArgs _
) Handles TextBox1.TextCh anged
If Not DirectCast(send er, Control).Tag Then
...
End If
End Sub
..
..
..
With Me.TextBox1
.Tag = True
.Text = "Hello World!"
.Tag = False
End With
///

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Cor Ligthert]

Re: TextChanged

Or making it in my opinion as syntax nicer using Herfrieds sample

dim SwProramTextBox 1Change as boolean
Private Sub TextBox1_TextCh anged( _
ByVal sender As Object, _
ByVal e As EventArgs _
Handles TextBox1.TextCh anged
If Not SwProgramTextBo x1Change Then
...
End If
SwProgramChange = False
End Sub
///
\\\
SwProgramTextbo x1Change = True
MeTextBox1.Text = "Hello World!"
///

:-)

Cor

[Herfried K. Wagner [MVP]]

Re: TextChanged

Cor,

"Cor Ligthert" <notmyfirstname @planet.nl> schrieb:[color=blue]
> Or making it in my opinion as syntax nicer using Herfrieds sample
>
> dim SwProramTextBox 1Change as boolean
> Private Sub TextBox1_TextCh anged( _
> ByVal sender As Object, _
> ByVal e As EventArgs _
> Handles TextBox1.TextCh anged
> If Not SwProgramTextBo x1Change Then
> ...
> End If
> SwProgramChange = False
> End Sub
> ///
> \\\
> SwProgramTextbo x1Change = True
> MeTextBox1.Text = "Hello World!"
> ///[/color]

I thought about resetting the flag inside the 'TextChanged' event handler
too but then decided not to do that. By letting the user reset the
property/flag manually consecutive changes of the textbox's content are
possible.

\\\
With Me.TextBox1
.Tag = True
For i = 1 To 20
...
If ... Then
.Text = ...
End If
Next i
.Tag = False
End With
///

The code above will not execute the code in the 'TextChanged' event handler
even if the textbox' text is changed more than once.

Just my 2 Euro cents...

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Cor Ligthert]

Re: TextChanged

Herfried,

My main thing is that using a Tag (just because it is there) for what it is
not created for is in my opinion not right. (You know it is friday evening
and you know what that means, so I don't go in discussion anymore)

I think you are right about the side effect what you wrote. However don't
shoot me at the moment when I did understand you wrong.

:-))

Cor

[Herfried K. Wagner [MVP]]

Re: TextChanged

Cor,

"Cor Ligthert" <notmyfirstname @planet.nl> schrieb:[color=blue]
> My main thing is that using a Tag (just because it is there) for what it
> is not created for is in my opinion not right. (You know it is friday
> evening and you know what that means, so I don't go in discussion anymore)[/color]

Mhm... I don't think that the use of 'Tag' shown in my sample is that bad,
but as I already said, I accept that other people choose another solution.
[color=blue]
> I think you are right about the side effect what you wrote. However don't
> shoot me at the moment when I did understand you wrong.[/color]

:-)

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[anatoly nulman]

Re: TextChanged





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