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Using C# to insert blob into Oracle

I have setup an Oracle table which contains a blob field. How do I insert
data into this field using C# and ADO.net?
Nov 16 '05 #1
11 23002
Chris,

The provider for Oracle should represent the field as a byte array. You
should be able to assign a new byte array to this field in a data set, and
then update the field through an ad-hoc query or stored procedure, just like
you would any other value in the database.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
I have setup an Oracle table which contains a blob field. How do I insert
data into this field using C# and ADO.net?

Nov 16 '05 #2
How do I convert a C# string into a byte array? Which class do I use, the
StreamReader, StringReader, etc? Any sample code is appreciated!

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
Chris,

The provider for Oracle should represent the field as a byte array. You should be able to assign a new byte array to this field in a data set, and
then update the field through an ad-hoc query or stored procedure, just like you would any other value in the database.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
I have setup an Oracle table which contains a blob field. How do I insert data into this field using C# and ADO.net?


Nov 16 '05 #3
Chris,

It depends on the format of the string. Is it in hex, or is it base64
encoded, or something else?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
How do I convert a C# string into a byte array? Which class do I use, the
StreamReader, StringReader, etc? Any sample code is appreciated!

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
Chris,

The provider for Oracle should represent the field as a byte array.

You
should be able to assign a new byte array to this field in a data set,
and
then update the field through an ad-hoc query or stored procedure, just

like
you would any other value in the database.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>I have setup an Oracle table which contains a blob field. How do I insert > data into this field using C# and ADO.net?
>
>



Nov 16 '05 #4
The string is just text.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Chris,

It depends on the format of the string. Is it in hex, or is it base64
encoded, or something else?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
How do I convert a C# string into a byte array? Which class do I use, the StreamReader, StringReader, etc? Any sample code is appreciated!

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
Chris,

The provider for Oracle should represent the field as a byte array.

You
should be able to assign a new byte array to this field in a data set,
and
then update the field through an ad-hoc query or stored procedure, just

like
you would any other value in the database.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>I have setup an Oracle table which contains a blob field. How do I

insert
> data into this field using C# and ADO.net?
>
>



Nov 16 '05 #5
Chris,

Yes, it is just text, but you want a byte array from it? There are many
ways to convert text to a byte array. Is the text representative of a
binary value, or is it actual text, and you want to store it in a binary
form in the table?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
The string is just text.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Chris,

It depends on the format of the string. Is it in hex, or is it
base64
encoded, or something else?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> How do I convert a C# string into a byte array? Which class do I use, the > StreamReader, StringReader, etc? Any sample code is appreciated!
>
> "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
> wrote
> in
> message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
>> Chris,
>>
>> The provider for Oracle should represent the field as a byte
>> array.
> You
>> should be able to assign a new byte array to this field in a data set,
>> and
>> then update the field through an ad-hoc query or stored procedure,
>> just
> like
>> you would any other value in the database.
>>
>> Hope this helps.
>>
>>
>> --
>> - Nicholas Paldino [.NET/C# MVP]
>> - mv*@spam.guard. caspershouse.co m
>>
>> "Chris Fink" <ch********@gma il.com> wrote in message
>> news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>> >I have setup an Oracle table which contains a blob field. How do I
> insert
>> > data into this field using C# and ADO.net?
>> >
>> >
>>
>>
>
>



Nov 16 '05 #6
Sorry for not explaining in more detail. I want to take a string, ex: "This
is a test" and insert it into a blob field. So I will need to first convert
the string into a byte[] and then perform the insert. In actualitym this
string could be text as presented, or more common xml documents.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:O7******** ******@TK2MSFTN GP12.phx.gbl...
Chris,

Yes, it is just text, but you want a byte array from it? There are many ways to convert text to a byte array. Is the text representative of a
binary value, or is it actual text, and you want to store it in a binary
form in the table?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
The string is just text.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Chris,

It depends on the format of the string. Is it in hex, or is it
base64
encoded, or something else?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> How do I convert a C# string into a byte array? Which class do I use,
the
> StreamReader, StringReader, etc? Any sample code is appreciated!
>
> "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
> wrote
> in
> message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
>> Chris,
>>
>> The provider for Oracle should represent the field as a byte
>> array.
> You
>> should be able to assign a new byte array to this field in a data

set, >> and
>> then update the field through an ad-hoc query or stored procedure,
>> just
> like
>> you would any other value in the database.
>>
>> Hope this helps.
>>
>>
>> --
>> - Nicholas Paldino [.NET/C# MVP]
>> - mv*@spam.guard. caspershouse.co m
>>
>> "Chris Fink" <ch********@gma il.com> wrote in message
>> news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>> >I have setup an Oracle table which contains a blob field. How do I
> insert
>> > data into this field using C# and ADO.net?
>> >
>> >
>>
>>
>
>



Nov 16 '05 #7
Chris,

In that case, you can use the GetBytes method on the ASCIIEncoder or the
UnicodeEncoder (depending on the type of text) and use that to get the bytes
that you store in the blob field.

However, I have to ask, why not just use a text field?

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Sorry for not explaining in more detail. I want to take a string, ex:
"This
is a test" and insert it into a blob field. So I will need to first
convert
the string into a byte[] and then perform the insert. In actualitym this
string could be text as presented, or more common xml documents.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:O7******** ******@TK2MSFTN GP12.phx.gbl...
Chris,

Yes, it is just text, but you want a byte array from it? There are

many
ways to convert text to a byte array. Is the text representative of a
binary value, or is it actual text, and you want to store it in a binary
form in the table?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> The string is just text.
>
> "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
> wrote
> in
> message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
>> Chris,
>>
>> It depends on the format of the string. Is it in hex, or is it
>> base64
>> encoded, or something else?
>>
>>
>> --
>> - Nicholas Paldino [.NET/C# MVP]
>> - mv*@spam.guard. caspershouse.co m
>>
>> "Chris Fink" <ch********@gma il.com> wrote in message
>> news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
>> > How do I convert a C# string into a byte array? Which class do I use, > the
>> > StreamReader, StringReader, etc? Any sample code is appreciated!
>> >
>> > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
>> > wrote
>> > in
>> > message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
>> >> Chris,
>> >>
>> >> The provider for Oracle should represent the field as a byte
>> >> array.
>> > You
>> >> should be able to assign a new byte array to this field in a data set, >> >> and
>> >> then update the field through an ad-hoc query or stored procedure,
>> >> just
>> > like
>> >> you would any other value in the database.
>> >>
>> >> Hope this helps.
>> >>
>> >>
>> >> --
>> >> - Nicholas Paldino [.NET/C# MVP]
>> >> - mv*@spam.guard. caspershouse.co m
>> >>
>> >> "Chris Fink" <ch********@gma il.com> wrote in message
>> >> news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>> >> >I have setup an Oracle table which contains a blob field. How do
>> >> >I
>> > insert
>> >> > data into this field using C# and ADO.net?
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>
>>
>
>



Nov 16 '05 #8
Oracle VARCHAR2 field is limited in size, BLOB is not. Many of the XML
transactions may exceed the VARCHAR2 limit.

Thanks for your help.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:e7******** ******@TK2MSFTN GP09.phx.gbl...
Chris,

In that case, you can use the GetBytes method on the ASCIIEncoder or the UnicodeEncoder (depending on the type of text) and use that to get the bytes that you store in the blob field.

However, I have to ask, why not just use a text field?

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Sorry for not explaining in more detail. I want to take a string, ex:
"This
is a test" and insert it into a blob field. So I will need to first
convert
the string into a byte[] and then perform the insert. In actualitym this string could be text as presented, or more common xml documents.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote
in
message news:O7******** ******@TK2MSFTN GP12.phx.gbl...
Chris,

Yes, it is just text, but you want a byte array from it? There are

many
ways to convert text to a byte array. Is the text representative of a
binary value, or is it actual text, and you want to store it in a binary form in the table?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> The string is just text.
>
> "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
> wrote
> in
> message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
>> Chris,
>>
>> It depends on the format of the string. Is it in hex, or is it
>> base64
>> encoded, or something else?
>>
>>
>> --
>> - Nicholas Paldino [.NET/C# MVP]
>> - mv*@spam.guard. caspershouse.co m
>>
>> "Chris Fink" <ch********@gma il.com> wrote in message
>> news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
>> > How do I convert a C# string into a byte array? Which class do I

use,
> the
>> > StreamReader, StringReader, etc? Any sample code is appreciated!
>> >
>> > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
>> > wrote
>> > in
>> > message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
>> >> Chris,
>> >>
>> >> The provider for Oracle should represent the field as a byte
>> >> array.
>> > You
>> >> should be able to assign a new byte array to this field in a data

set,
>> >> and
>> >> then update the field through an ad-hoc query or stored procedure, >> >> just
>> > like
>> >> you would any other value in the database.
>> >>
>> >> Hope this helps.
>> >>
>> >>
>> >> --
>> >> - Nicholas Paldino [.NET/C# MVP]
>> >> - mv*@spam.guard. caspershouse.co m
>> >>
>> >> "Chris Fink" <ch********@gma il.com> wrote in message
>> >> news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
>> >> >I have setup an Oracle table which contains a blob field. How do >> >> >I
>> > insert
>> >> > data into this field using C# and ADO.net?
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>
>>
>
>



Nov 16 '05 #9
Now that I am on the correct path, the string to byte array was not
difficult. However, the insert of the byte array is throwing an Oracle
Exception, {"ORA-01465: invalid hex number" }. It is obvious as to why when
looking at the SQL (System.Byte[]) , but I am not sure what I need to do to
pass this byte array into the Blob field properly in my SQL statement.

Following is the code, notice that the runtime SQL string is as follows:
INSERT INTO INBOUNDWEBSERVI CES (STRUCTUREID, STATUS, LASTUPDATEDBY, MSGIN)
VALUES ('structureID10 ','Test status1','111', 'System.Byte[]')

string asciiString = "Test String";
Encoding ascii = Encoding.ASCII;

// Convert the string into a byte[].
byte[] baMsgIn = ascii.GetBytes( asciiString);

string sql = String.Format(( "INSERT INTO INBOUNDWEBSERVI CES (STRUCTUREID,
STATUS, LASTUPDATEDBY, MSGIN) VALUES ('{0}','{1}','{ 2}','{3}')"),
structureID, status, lastUpdatedBy, baMsgIn);
try
{
OracleConnectio n cn = new OracleConnectio n(DATASOURCE8I) ;
cn.Open();
OracleCommand cmd = new OracleCommand() ;
cmd.CommandType = CommandType.Tex t;
cmd.CommandText = query;
cmd.Connection = cn;
cmd.ExecuteNonQ uery();
cn.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Me ssage.ToString( ));
}
"Chris Fink" <ch********@gma il.com> wrote in message
news:ei******** ******@TK2MSFTN GP10.phx.gbl...
Oracle VARCHAR2 field is limited in size, BLOB is not. Many of the XML
transactions may exceed the VARCHAR2 limit.

Thanks for your help.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in message news:e7******** ******@TK2MSFTN GP09.phx.gbl...
Chris,

In that case, you can use the GetBytes method on the ASCIIEncoder or

the
UnicodeEncoder (depending on the type of text) and use that to get the

bytes
that you store in the blob field.

However, I have to ask, why not just use a text field?

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Chris Fink" <ch********@gma il.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Sorry for not explaining in more detail. I want to take a string, ex:
"This
is a test" and insert it into a blob field. So I will need to first
convert
the string into a byte[] and then perform the insert. In actualitym this string could be text as presented, or more common xml documents.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:O7******** ******@TK2MSFTN GP12.phx.gbl...
> Chris,
>
> Yes, it is just text, but you want a byte array from it? There are many
> ways to convert text to a byte array. Is the text representative of a> binary value, or is it actual text, and you want to store it in a binary> form in the table?
>
>
> --
> - Nicholas Paldino [.NET/C# MVP]
> - mv*@spam.guard. caspershouse.co m
>
> "Chris Fink" <ch********@gma il.com> wrote in message
> news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> > The string is just text.
> >
> > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>
> > wrote
> > in
> > message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
> >> Chris,
> >>
> >> It depends on the format of the string. Is it in hex, or is it> >> base64
> >> encoded, or something else?
> >>
> >>
> >> --
> >> - Nicholas Paldino [.NET/C# MVP]
> >> - mv*@spam.guard. caspershouse.co m
> >>
> >> "Chris Fink" <ch********@gma il.com> wrote in message
> >> news:%2******** ********@TK2MSF TNGP15.phx.gbl. ..
> >> > How do I convert a C# string into a byte array? Which class do I use,
> > the
> >> > StreamReader, StringReader, etc? Any sample code is appreciated!> >> >
> >> > "Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om>> >> > wrote
> >> > in
> >> > message news:eT******** ******@TK2MSFTN GP10.phx.gbl...
> >> >> Chris,
> >> >>
> >> >> The provider for Oracle should represent the field as a byte> >> >> array.
> >> > You
> >> >> should be able to assign a new byte array to this field in a data set,
> >> >> and
> >> >> then update the field through an ad-hoc query or stored procedure,> >> >> just
> >> > like
> >> >> you would any other value in the database.
> >> >>
> >> >> Hope this helps.
> >> >>
> >> >>
> >> >> --
> >> >> - Nicholas Paldino [.NET/C# MVP]
> >> >> - mv*@spam.guard. caspershouse.co m
> >> >>
> >> >> "Chris Fink" <ch********@gma il.com> wrote in message
> >> >> news:Oo******** ******@TK2MSFTN GP14.phx.gbl...
> >> >> >I have setup an Oracle table which contains a blob field. How do> >> >> >I
> >> > insert
> >> >> > data into this field using C# and ADO.net?
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >
> >
>
>



Nov 16 '05 #10

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In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
1
7551
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For...
0
7881
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
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5147
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert...
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3550
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in...
0
3539
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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1121
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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