Albert,
Your first problem was that it was always flagged. When not, maybe it is an
easy answer.
How do you do the flag setting in your control, when you want to force that
when there is a change you can use the endcurrentedit?
As sample
BindingContext(ds.Tables(0)).EndCurrentEdit()
Probably you need this in your control somewhere.
Cor
"Albert" <(E-Mail Removed)> schreef in bericht
news:F07743E1-0451-4A1E-B71E-(E-Mail Removed)...
> hi,
>
> I have done the debug ... but can't see anything that gone wrong ... the
> new
> property tested is just plain set value and get value to a private
> variable
> .. logically, it should be the same right? set a value to a variable and
> get
> the value back .. ?? but the databinding also flag it as changed ... I
> tried
> with "text" property and it don't flag change ??? next puzzle is I tried
> to
> use the rowversion to read the original and current value of the so call
> changed row but it showed all to be the same (contents and types). ... so
> next question is .. is there anything else that the getchanges method
> detected that the original and current row state don't tell ??
>
>
>
> Thank,
>
> Albert
>
>
> "Cor Ligthert" wrote:
>
>> AH,
>>
>> Why do you not just debug it, is maybe your usercontrol doing an
>> automatic
>> update of a textbox or whatever on your usercontrol and with that pushing
>> down the blank information in your datarow.
>>
>> Cor
>>
>> "AH" <(E-Mail Removed)>
>>
>> > Hi all,
>> >
>> > I noticed this strange behavior; I created a new control (example
>> > inherits
>> > from textbox) and add a new property, then I bind this new property to
>> > a
>> > field in my dataTable in a dataSet. After the binding statement, when I
>> > check for dataset.getchanges ... it alway returns that there is changes
>> > (even the propety just set the value and get the same value to
>> > return)...
>> > I have tried to understand what has changed by using the
>> > rowversion.original and rowversion.current to compare all fields but
>> > find
>> > evertything to be exactly the same ...I wonder whatelse that getchanges
>> > has discovered that I am not aware of ..??
>> > however, if I bind it to a standard control like textbox, it is ok ....
>> > so
>> > what is wrong here .. have I miss anything when creating the new
>> > control
>> > ?...or have getchanges discovered some strange items that I am not
>> > aware
>> > of ?? please help
>> > Thank you ..
>> >
>> > Albert
>> >
>> > sample code:
>> > --- for new controls ---
>> > imports system.componentModel
>> > public class NewControl
>> > inherits system.windows.forms.textbox
>> > private strVar as string
>> > .......
>> > ---
>> > public property NewValue as string
>> > Get
>> > return strVar
>> > Set (byval value as string)
>> > strVar = value
>> > End Set
>> > End Property
>> >
>> > End class
>> >
>> > ------------
>> > for the binding
>> >
>> > ' set up the dataadapter .. dataset ... etc.
>> > me.sqldataadapter1.fill(me.dataset11)
>> > me.textbox1.databindings.add(new system.windows.forms.binding("text",
>> > dataset11, "table1.Field1")
>> > me.NewControl1.databinding.add(new
>> > system.windows.form.binding("NewValue",dataset11,"table1.field2")
>> > me.BindingContext(dataset11, "table1").EndCurrentEdit()
>> > dim n as integer
>> > if dataset11.getchanges is nothing then msgbox("noting") else
>> > msgbox("changed")
>> >
>> >
>> >
>> >
>>
>>
>>
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