Reconsituting an OpenNetCF Signature on the Desktop

All,

I'm struggling with bitmaps and byte arrays today. I'm using the OpenNetCF
Signature control and save the byte[] representing the signature into
SQLMobile.
If I read this byte[] from SQLMobile on device, I can reconstitute the
signature back
into the OpenNetCF Signature control with no issue.

If I replicate the table containing the signature byte[] to Yukon, I cannot
seem to
reconstitute the byte[] into a Bitmap that can be shown in a Full .NET
Framework
PictureBox on the desktop. I notice that on device, the SQLMobile image
column
represents the byte[] as F00000....

and after replicating to Yukon, the same image column looks like:

0xF00000...

I think I'm missing the Bitmap header information as Alex has explained in
responding to a few posts,
but wouldn't that info have to be written on device before replicating to
the desktop? Most examples
of this deal with writing the Bitmap on device to a local file and calling
it good, but I need to resolve
the bitmap to an Image column in SQLMobile in such a way that it can be
reconstituted in a
desktop application.

Thank you.
--
Darren Shaffer
Principal Architect
Connected Innovation

The GetSignature method of the Singature control in the SDF returns a byte
array of line points that have been recorded not the Bitmap bytes.

-Alex

--
Alex Yakhnin, .NET CF MVP

"Darren Shaffer" wrote:

> All,
>
> I'm struggling with bitmaps and byte arrays today. I'm using the OpenNetCF
> Signature control and save the byte[] representing the signature into
> SQLMobile.
> If I read this byte[] from SQLMobile on device, I can reconstitute the
> signature back
> into the OpenNetCF Signature control with no issue.
>
> If I replicate the table containing the signature byte[] to Yukon, I cannot
> seem to
> reconstitute the byte[] into a Bitmap that can be shown in a Full .NET
> Framework
> PictureBox on the desktop. I notice that on device, the SQLMobile image
> column
> represents the byte[] as F00000....
>
> and after replicating to Yukon, the same image column looks like:
>
> 0xF00000...
>
> I think I'm missing the Bitmap header information as Alex has explained in
> responding to a few posts,
> but wouldn't that info have to be written on device before replicating to
> the desktop? Most examples
> of this deal with writing the Bitmap on device to a local file and calling
> it good, but I need to resolve
> the bitmap to an Image column in SQLMobile in such a way that it can be
> reconstituted in a
> desktop application.
>
> Thank you.
> --
> Darren Shaffer
> Principal Architect
> Connected Innovation
>
>
>

thanks Alex.
--
Darren Shaffer
Principal Architect
Connected Innovation

"Alex Yakhnin [MVP]" <a.yakhnin@online.att.net> wrote in message
news:FAF8DC66-E551-4952-9F47-35A6305465D8@microsoft.com...
> The GetSignature method of the Singature control in the SDF returns a byte
> array of line points that have been recorded not the Bitmap bytes.
>
> -Alex
>
> --
> Alex Yakhnin, .NET CF MVP
>
> "Darren Shaffer" wrote:
>
>> All,
>>
>> I'm struggling with bitmaps and byte arrays today. I'm using the
>> OpenNetCF
>> Signature control and save the byte[] representing the signature into
>> SQLMobile.
>> If I read this byte[] from SQLMobile on device, I can reconstitute the
>> signature back
>> into the OpenNetCF Signature control with no issue.
>>
>> If I replicate the table containing the signature byte[] to Yukon, I
>> cannot
>> seem to
>> reconstitute the byte[] into a Bitmap that can be shown in a Full .NET
>> Framework
>> PictureBox on the desktop. I notice that on device, the SQLMobile image
>> column
>> represents the byte[] as F00000....
>>
>> and after replicating to Yukon, the same image column looks like:
>>
>> 0xF00000...
>>
>> I think I'm missing the Bitmap header information as Alex has explained
>> in
>> responding to a few posts,
>> but wouldn't that info have to be written on device before replicating to
>> the desktop? Most examples
>> of this deal with writing the Bitmap on device to a local file and
>> calling
>> it good, but I need to resolve
>> the bitmap to an Image column in SQLMobile in such a way that it can be
>> reconstituted in a
>> desktop application.
>>
>> Thank you.
>> --
>> Darren Shaffer
>> Principal Architect
>> Connected Innovation
>>
>>
>>

Darren, you may consider this example [1] to get a user signature and
save it as monchrome bitmap.

[1] http://www.sergeybogdanov.com/Samples/SaveImage.zip

Best regards,
Sergey Bogdanov
http://www.sergeybogdanov.com


Darren Shaffer wrote:
> All,
>
> I'm struggling with bitmaps and byte arrays today. I'm using the OpenNetCF
> Signature control and save the byte[] representing the signature into
> SQLMobile.
> If I read this byte[] from SQLMobile on device, I can reconstitute the
> signature back
> into the OpenNetCF Signature control with no issue.
>
> If I replicate the table containing the signature byte[] to Yukon, I cannot
> seem to
> reconstitute the byte[] into a Bitmap that can be shown in a Full .NET
> Framework
> PictureBox on the desktop. I notice that on device, the SQLMobile image
> column
> represents the byte[] as F00000....
>
> and after replicating to Yukon, the same image column looks like:
>
> 0xF00000...
>
> I think I'm missing the Bitmap header information as Alex has explained in
> responding to a few posts,
> but wouldn't that info have to be written on device before replicating to
> the desktop? Most examples
> of this deal with writing the Bitmap on device to a local file and calling
> it good, but I need to resolve
> the bitmap to an Image column in SQLMobile in such a way that it can be
> reconstituted in a
> desktop application.
>
> Thank you.

using it now Sergey - thank you!

--
Darren Shaffer
Principal Architect
Connected Innovation

"Sergey Bogdanov" <sergey.bogdanov@gmail.com> wrote in message
news:u2q$U0lKFHA.904@tk2msftngp13.phx.gbl...
> Darren, you may consider this example [1] to get a user signature and save
> it as monchrome bitmap.
>
> [1] http://www.sergeybogdanov.com/Samples/SaveImage.zip
>
> Best regards,
> Sergey Bogdanov
> http://www.sergeybogdanov.com
>
>
> Darren Shaffer wrote:
>> All,
>>
>> I'm struggling with bitmaps and byte arrays today. I'm using the
>> OpenNetCF
>> Signature control and save the byte[] representing the signature into
>> SQLMobile.
>> If I read this byte[] from SQLMobile on device, I can reconstitute the
>> signature back
>> into the OpenNetCF Signature control with no issue.
>>
>> If I replicate the table containing the signature byte[] to Yukon, I
>> cannot seem to
>> reconstitute the byte[] into a Bitmap that can be shown in a Full .NET
>> Framework
>> PictureBox on the desktop. I notice that on device, the SQLMobile image
>> column
>> represents the byte[] as F00000....
>>
>> and after replicating to Yukon, the same image column looks like:
>>
>> 0xF00000...
>>
>> I think I'm missing the Bitmap header information as Alex has explained
>> in responding to a few posts,
>> but wouldn't that info have to be written on device before replicating to
>> the desktop? Most examples
>> of this deal with writing the Bitmap on device to a local file and
>> calling it good, but I need to resolve
>> the bitmap to an Image column in SQLMobile in such a way that it can be
>> reconstituted in a
>> desktop application.
>>
>> Thank you.