I`m using oleDbConnection in order to Select a BLOB data from Oracle column, and I have to stick with this type of connection since all my application is using it.
After I used the following code, I got the error: unspecified [code]....
I have a table with a blob field that stores photos in jpg format. Is there any way to direct fill the Dataset with the OracleDataAdapter?
Like:My code in vb.net
Dim oAdp As OracleDataAdapter Dim v_oDs As DsSubRegistro <- My Dataset
oAdp = New OracleDataAdapter(myConnection.sqlCmd("SELECT * FROM ..."))
With oAdp.TableMappings.Add(Common.DbDataAdapter.DefaultSourceTableName, v_oDs.Foto.TableName).ColumnMappings
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I am trying to save an image at oracle data base with OLEDB provider and i used the function which written below there is no error appeared but in the same time the image field still null that means the image value was not saved in the db
note:
dim DBConnection as oledbConnection
dim DBTransaction as oledbTransaction
[code]....
can you tell me,how can i add a provider for oracle(Microsoft Provider oledb for oracle).Actually i had Microsoft ODBC for oracle but i want to add a provider above mention.
View 2 RepliesI would like to insert several PDF files into oracle. I have been looking for some examples but i didn't find it.
View 1 RepliesI have build an application in VB.NET (3.5) wich connects to an oracle DB. I works perfectly on my pc. However. When I install the app on a pc without oracle it will not connect to the DB on the server. Do I have to install somekind of driver on the client pc?
View 4 RepliesTrying to figure out if there is anyway built into windows 7/Vista/XP and/or Dpinst to verify that a driver is installed? I created a program that uses DPinst to install a driver and now I need to figure out how to tell the user that it is safe to close the program once the driver is install as the driver takes longer on some machines to install. Would anyone know how to get this to work?
View 7 RepliesGreetings, I have installed Oracle 10g Express Edition database on a server and install the client on my PC. Now, I`m developing a vb.net application using visual studio 2005 and I need to use the oracle 10g express edition database. SO I initialize the connection using the following connection string:
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I have a web site that I developed on Vista using Vb.net9. It makes a connection to Oracle. for the connection I use System.Data.OracleClient. It works fine on my machine, and our test server, but it does not work on the production server. We installed the Oracle Client 11 on the server. The error is System.Data.OracleClient requires Oracle client software version 8.1.7
We've tried, making a console app that opens the connection, connection runs fine, opens, displays a message and all is well there.Then we make a simple web form, put it in the directory of the program, just a button, opens the connection, try..catch, grabs error, same error.The console app was running under an Administrator, web site running under iwam. Is it possible that iwam has a different path?
I am using VS 2008 with frame work 2.0. On my development machine I am using Oracle 9 as database. When I deploy my application where Oracle 9 is installed it works properly. but it gives error on oracle8 NT installed machine as follow.
"System.Data.OracleClient requires Oracle client software version 8.1.7 or greater "I can get rid from this error.
i Use "Imports System.Data.OracleClient .. Private conn As New OracleConnection()" to connect to my Oracle database..but when i put my program to another PC I need install Oracle Client on it...is there some other way how to connect to Oracle DB without installing oracle client to client PC?? (Database is on Server an program is on client´s PCs)
View 2 Repliesi was under the impression that using the System.Data.OracleClient namespace will allow me to deploy my application without having the client machine install any OracleClient software besides the .Net Framework 2.0 which if i'm not mistaken, contains the System.Data.OracleClient.dll.
but after creating a WinForm application and then publishing it thru ClickOnce , i found myself getting this error when running the application on the client machine. is this a normal behavior or did i do something wrong in the process?
We are trying to store and retrieve datatable as blob (varbinary(max)). We convert the existing datatable into an xml file and store that xml file as a blob and while retrieving we get the blob as xml file and convert it back to datatble. It seems to be storing and retrieving the xml object but having issues while converting it back to the datatable ("End of stream - error").
View 2 RepliesI have a mySQL table(IMP_SCANS) holding the file, it's name and size for every document:
scan_1 blob
description varchar
filesize int
doc_no varchar
doc_date date
I managed to insert a file to the table. Now I need to save the file to disk.
So I have the code:
Dim conn As New MySqlConnection
Dim cmd As New MySqlCommand
Dim myData As MySqlDataReader
Dim SQL As String
Dim FileSize As UInt32
Dim fs As FileStream
[CODE]............
I all works fine up to the line: myData.GetBytes(myData.GetOrdinal("scan_1"), 0, rawData, 0, filesize) Where it says "Object reference not set to an instance of an object". I cannot figure out why I receive this error.
How to save all the data displayed in DataGridview( 2 column, no primary key) and have a button and
View 7 RepliesI'm using Selenium RC + .Net Client Driver. I've created a Firefox profile in my c:selenium directory. Here's my code:
Dim MySelenium As ISelenium = Nothing
MySelenium = New DefaultSelenium("localhost", 4444, "*custom C:/Program Files/Mozilla Firefox/firefox.exe -profile c:/selenium/", "http://www.google.com/")
When I run this, I get the following error:
Failed to start new browser session: Error while launching browser
What is the proper way to do this?
I am trying to retrieve the data from EXCEL 2003 spreadsheet from row 8 onwards because from Row 1 to Row 7 the row is merged columns from A1 to K1, A2 to K2, A3 to K3, A4 to K4, A5 to K5, A6 to K6, A7 to K7.
View 28 RepliesI have two small VB.NET applications that connect to the same Oracle database. One uses the OLEDB provider, and the other uses Oracle's ODP.NET. Should I expect to see problems with the OLEDB provider, as it's less 'native' to Oracle?
View 1 RepliesSo I have an application that queries a database for something like a social security number. Originally, the connection was established programmatically using ODBC. Now, I want to use the data source option built into Visual Studio.
View 2 RepliesI have determined thanks to the last q & a that there is something wrong with my "save to db" code as well as my "retrieve to picture" code. Even If I manually save the pic in the db it stil wont retreive. This is code i patched together from 3 or 4 examples around the net.
Dim filename As String = txtName.Text + ".jpg"
Dim FileSize As UInt32
Dim ImageStream As System.IO.MemoryStream[code]......
I need to have a 32 bit oracle client installed my test PC which is acctually a 64 bit machine.when i try connecting to oracle in my window application in vb.net ,it does not open the connection.
Imports
Oracle.DataAccess.Client
Public
[Code].....
I'm working on a vb.net application that executes an Oracle stored procedure. The stored procedure displays a value using dbms_output.put_line. How do I retrieve that value from the oracle database into my vb.net code?
View 1 RepliesI have installed Oracle 10g in one of my office's computer. I want to keep this as database server. I am developing a .net project which will communicate with the database server from client machine and from the server machine. I success to communicate with oracle from server machine but not from client machine using the .net project. The connection code is as follows:
Public OraConn As ADODB.Connection
OraConn = New ADODB.Connection
OraConn.Provider = "OraOLEDB.Oracle"
[code].....
How to connect to oracle (Linux) without installation of Oracle Client or TOAD .....?
View 2 RepliesI am having a problem storing an image as a Blob in a SQL linked table. Our system uses an Access 2002 frontend and linked to a SQLServer2000 database. I have a form that I want to display a unique client jpeg photo for each client record. Our client HIPAA concerns means we have to store the image not the path in the database field. I am using an Image control on the form. Initially I have been able to load an image from a Windows Dialog into the control and save the path no problem.
My issues are surrounding how to actually save and load the jpeg as a BLOB in a VBA byte Array after the image has been loaded to the form from the dialog box.(Is there some sort of binary conversion needed or does the Append and GetChunk methods handle all this)?:
All the code examples I have been able to find on the subject have a line of code to set the Image control's data source to the open recordset with this statement ---> Set imgDBImage.DataSource = rs. Does this statement work with VBA because DataSource does not show up as a property of an Access 2002 Image Control. So how do I point the Image Control to the table field which contains the BLOB in VBA code?
Finally, how do you convert the string path of the image to binary for storage in a byte Array in VBA. I have the syntax for a VB 6.0 which is..... .Fields("ImageBLOB").AppendChunk bytBLOB. Is the .Fields portion of the code relevant in VBA to tell what table field to write to and does the AppendChunk method handle all the conversion?
I have managed to connect vb.net to Microsoft database access but now i am struggling with the code to authentication log in. when i log in to the form i want it to display the user name in the label in vb.net form.
View 1 RepliesI have created an application in VB.Net 2010 and am using an Access 2010 db. Connecting to this DB I use the Provider= Microsoft.ACE.OLEDB.12.0 and it works fine on my machine. This was a recent update from using Jet as that provider was having issues on client Win64 computers that had Access 2007 or 2010 installed.Basically my issue is that I get the error that Microsoft.ACE.OLEDB.12.0 is not installed when I try to run the application on the client.
The problem however, is that I do not want ask the users to install Data Access Objects in addition to .Net 4.0. I want a simple install that they can run and upgrade to .net 4.0 if they need to. The above thread states a solution as "You can also consider to use ADO.NET object in System.Data.OleDb namespace to connect to the Access database instead of the Provider. In my opinion, this is the best choice since the ADO.NET provides you the powerful data access objects." This sounds like a great option, however I cannot find any way to install the ACE dll and get it to work on the client.what do I need to include in the client installer to get my application to run on systems without Access installed? Do I just include the ACEODB.dll or is there something else that needs to be done?
I am working on some window application and facing the following error while running my code An unhandled exception of type 'Oracle.DataAccess.Client.OracleException' occurred in oracle.dataaccess.dll
Additional information: System error. I don't know what type of error this is. I have successfully added the reference dll file
I need to export data into an Access database. My code works, but it works with the assumption the client machine has the Microsoft.Jet.OLEDB.4.0 as a valid provider.
I want to test to see if this is true or not, in code. My problem is that I don't have the location of an existing access database and I don't want to create a new .mdb that I'd use to verify the connection and then delete it.
I have a small program on the menu written in VB6 retrieve data from Acess run very fast and now want to switch to VBNet2008. VBNet2008 conversion is still normal, but when running the menu does not appear that waiting in line, then click on the menu bar of this menu appears, but not the font is in Unicode data is available. Expect you to help debug programs that run on VBNet2008 still running good access Menu fast as running on VB6. Also supported is Unicode font on VBNet2008 does not function for unicode font. Attach program with VB6 and VB2008.
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