Accessing Image Files Stored As Binary Data
Jul 11, 2006
Hi
When images are uploaded and stored directly into a sql database as binary data (eg in the club starter kit) how can those images be accessed and displayed.
When I open the images table in VWD and select display data, the cells holding the image data hold a <binary data> tag. What I want to be able to do is get at that data, or actually get at the image so that it is displayed. My reason is this, at the moment the only way to access the images in the sql database after they have been uploaded is to log into the website and view them as an administrator of the site. It would be much simpler if I could access the database directly and view the contents of the images table.
Any ideas?
Thanks
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Aug 17, 2005
I seem to be getting very annoying behaviour from SQL Server and was wondering what the correct method should be...I want to store some binary data in the database and I want to use a stored procedure. I also want to pass some XML to the stored procedure where this XML contains the binary data. I will then use OPENXML to grab the binary data and stick in the table. In order to ensure the safe transmission of the binary through XML I Base64 encode it. Ok so far. The problem is that although OPENXML is supposed to assume that anything marked as Image/Binary will be Base64 encoded it then proceeds to Base64 encode it again and put that result into the database! So what am I missing, am I supposed use a CDATA section or something rather than Base64 encode my XML?
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May 13, 2008
Hi I have an image column (Spectrum) in a Table (ParticleEDS) which is populated with an array of a bunch of INT32's (4 bytes each)
Using TSQL is there any way that I can read each 4 bytes (convert this to an INT) and return this data for a given record (based on ParticleEDSID).
I know that there are 2048 x 4 bytes that make up the image column.
I would like the output of the query/stored procedure to be:
Value
------------
1 2342
2 2334
3 3343
.....
2048 1001
thanks!
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Aug 23, 2007
Hi. how can i store binary data to another field with image data types.
here is my sample code
--note: [CUD_DOCUMENT] and [RES_DOCUMENT] are image data type
DECLARE @CUD_DOCUMENT binary
SELECT @CUD_DOCUMENT = CUD_DOCUMENT FROM CUD_CONTINUOUS_UPLOAD_DOCUMENTS
INSERT INTO [RES_RESUMES](
[RES_DOCUMENT] -- image data type
) VALUES (
@CUD_DOCUMENT)
thnx for the help.
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May 15, 2007
Hi All,
I am not sure whether this is the right place to post this question. But I am unable to figure out what is the best solution to retrieve and display an image in a html file(stored in varbinary(max) column). I have a list of images in the file and I am supposed to display them. Can anybody please let me know what is the best way to do this?
Thanks a lot!!
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Aug 7, 2015
I have an MVC asp.net application that stores many records in a table on sql server, in its own system. used the system for 2 months, worked fine accessing, changing data.
Now that other users are logging in? there is cross coupling going on. one user gets the data from another users sql search.
In the mvc app it had used the get async method to read the ID record from the db, i set that to synchronous. no effect; the user makes their own login id but that does nt matter either.
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Jul 21, 2005
i am trying to retrieve an image blob stored in SQL to a web matrix form (using VB.NET). I am totaly new to this and i got the code below from a site but it doesn't see to work.....
<%@ Page Language="VB" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.IO" %>
<%@ import Namespace="System.Drawing.Image" %>
<%@ import Namespace="System.Drawing.Bitmap" %>
<%@ import Namespace="System.Drawing.Graphics" %>
<%@ import Namespace="System.Web.UI.WebControls" %>
<%@ import Namespace="System.Data.Odbc" %>
<%@ import Namespace="System.Data.SqlClient" %>
<script runat="server">
Private Function GetImageFromDB(ByVal ImageID As Integer) As System.Drawing.Image
' Get the Connection string
Dim strConnection As String
strConnection = "server='(local)'; trusted_connection=true; database='mydatabasename'"
Dim conn As New SqlConnection(strConnection)
Dim sqlCommand As String
Dim strImage As String
Dim image As System.Drawing.Image
Try
sqlCommand = "SELECT ImageField FROM ImageTable WHERE MyImageId = " + ImageID.ToString
Dim cmd As New SqlCommand(sqlCommand)
cmd.Connection = conn
conn.Open()
Dim dr As SqlDataReader
dr = cmd.ExecuteReader()
While (dr.Read())
Dim byt As Byte()
byt = dr.Item(strImage)
Dim bmp As New System.Drawing.Bitmap(New System.IO.MemoryStream(byt))
image = bmp
End While
Catch ex As Exception
' Log Error
Response.Write(ex.Message)
Finally
If conn.State = ConnectionState.Open Then
conn.Close()
End If
End Try
Return image
End Function
Private Sub Page_Load (ByVal sender As System.Object, ByVal e As System.EventArgs)
If Not IsPostBack Then
GetImageFromDB(2111)
End If
End Sub
</script>
<html>
<head>
</head>
<body>
<form enctype="multipart/form-data" runat="server">
<asp:Image id="BrandSignImg" runat="server"></asp:Image>
</form></body></html>
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Jul 25, 2007
In the code sample below, case eLABEL, eENGUNITS works ok. The target SQL field is defined as varchar(50).
The second section is not so happy. It is attempting to write to an SQL field defined as binary(2)
Executing an SQL script to excercise this line results in error:
System.Data.SqlClient.SqlException: Incorrect syntax near the keyword 'foreign'
where 'foreign' is the name (FieldDef.sFldName) of the SQL field being written.
The c# code composes the following command:
"UPDATE " + acPointType + " SET " + FieldDef.sFldName +
" = @data_params WHERE VEC = '" + acVECName +
"' and name = '" + acPointName + "';";
What is the proper syntax for the second case set?
Code Snippet
case vcidatatype.eLABEL:
case vcidatatype.eENGUNITS:
{
byte[] bbuff = new byte[512];
bbuff = rdr.ReadBytes(FieldDef.iLen);
vciSqlCommand.Parameters.Add(new SqlParameter("@data_params", SqlDbType.VarBinary));
vciSqlCommand.Parameters["@data_params"].Value = bbuff;
break;
}
case vcidatatype.eFIDADR:
case vcidatatype.eLANADR:
{
byte[] bbuf = new byte[512] ;
bbuf = rdr.ReadBytes(2);
vciSqlCommand.Parameters.Add(new SqlParameter("@data_params", SqlDbType.Binary));
vciSqlCommand.Parameters["@data_params"].Value = bbuf;
break;
}
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Jan 13, 2008
Hi, All
Can you add a group of images into the aspnet_profile table as a serialized binary blob?
If so how do you retrieve the image from the blob?
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Dec 21, 2005
I am using FileUpload control in ASP.net 2.0 to upload files and store them into SQL server database as an image. I am fine with MS office files, image files and etc. We have Product Center (Proe) engineering software to configure parts and the files generated through this software have PLT extension when I store these files, the file type is Plian/text. I am using Fileupload.PostedFile.Content to get the file type. How can I store PLT, TIF files in SQL server? Please help.
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Sep 18, 2005
I have a table that contains the following two columns:BITS (image(16))BIT_LENGTH (int(4))When I look at the table, I see "OLE Object" in the BITS column. Whatsyntax should I use in a SELECT statement to convert the binary imageinfo contained in "BITS" into simple text that I can read? What roledoes the BIT_LENGTH field play?
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Nov 1, 2006
please mail me at lavkesh_kumar@yaho.com
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Jul 20, 2005
Hi,This is driving me nuts, I have a table that stores notes regarding anoperation in an IMAGE data type field in MS SQL Server 2000.I can read and write no problem using Access using the StrConv function andI can Update the field correctly in T-SQL using:DECLARE @ptrval varbinary(16)SELECT @ptrval = TEXTPTR(BITS_data)FROM mytable_BINARY WHERE ID = 'RB215'WRITETEXT OPERATION_BINARY.BITS @ptrval 'My notes for this operation'However, I just can not seem to be able to convert back to text theinformation once it is stored using T-SQL.My selects keep returning bin data.How to do this! Thanks for your help.SD
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Feb 18, 2004
Been pondering the idea of putting 43 - 56K Pdf documents into a SQL DB but everything I've read only goes as far as to explain how the data is stored or manipulated.
I need to establish whether there are real performance issues or gains that will be experienced by doing this.
If indeed, performance would be a big issue, would storing the files in a Folder on another drive outside the Database be all that much faster (Let windows handle the fetch and carry instead of SQL Server).
The plan at the moment is to store all the image data in a separate data file or multiple data files. Using partitioned views is also a consideration.
Number of records per day (pdf's) would be somewhere around a 1000.
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May 7, 2015
I'm using a bit-wise comparison to effectively store multiple values in one column. However once the number of values increases it starts to become too big for a int data type.you also cannot perform a bitwise & on two binary datatypes. Is there a better way to store the binary data rather than int or binary?
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Feb 23, 2005
I have integer data stored in an image field. Every 2 bytes in the image field is a data point. Currently this data is extracted from within a VB6 application, converted to an ADO recordset and passed in to Crystal Reports. I'd like to find a way to unpack the data through a stored procedure and report from the store procedure instead (bypassing the VB6 application). Can some one point me in the right direction please? CREATE TABLE [dbo].[tblBottleGraphData] ([BottleID] [int] NOT NULL ,[GraphData] [image] NULL ,[TimeOffset] [int] NULL ,[ConcurrencyID] [int] NULL ) ON [SECONDARY] TEXTIMAGE_ON [SECONDARY]
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Nov 2, 2013
I'm working on a report to show financial transactions from a table over a certain period. For most transactions there is a PDF document that is stored in a separate table in a binairy format. In my report I would like to include a link on every line with transaction information in the report that opens the PDF that is linked to that transaction. Just to be clear, I don't want to embed the PDF in the report but I want the users of the report to have the option to view the PDF that is related to that transaction in their standard pdf reader (adobe).
Code to do the following:
Once a user clicks on the link to view the PDF I need the code to get the binairy data of the PDF file from the table, convert it back to a PDF and open it in the default pdf reader (for example adobe reader). If it can't directly open the file then it's maybe possible to activate the 'open or download' pop up that you also get when you download something from a website.
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May 31, 2007
I am saving large text document in an image type of column in a SQL Server 2000 table.
How will I set up searching of words/ phrases for data stored in this column?
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Mar 13, 2012
I need to trim (removing white spaces) the data or text in a column which is of type IMAGE.
I would like to achieve this through a PL/SQL procedure or function.
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Dec 5, 2007
Hi,
Does anyone know how to deal with image data type within stored procedure when using SQL2000?
I have a table and there is an image data type column. In this table I need to make a copy of one row within a table through a SP /it means to retrieve the whole row within SP, change another columns data (but, that the image is not modified) / and save the modified row back to the same table.
Problem is, that within SP is not alowed to use local varaibles of image data type. Does anyone know a solution for this? Please.
Thank you.
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Nov 2, 2007
Hello, I have a table that stores binary files. When I serve them up to the user, I call the following page (serveDocument.aspx?DocumentID=xxx) which holds only the following code and pass the document ID: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim DocumentID As Integer = Convert.ToInt32(Request.QueryString("DocumentID")) 'Connect to the database and bring back the image contents & MIME type for the specified picture
Using myConnection As New SqlConnection(ConfigurationManager.ConnectionStrings("kelly_lmConnectionString1").ConnectionString) Const SQL As String = "SELECT [Content_Type], [Document_Data] FROM [lm_Service_Detail_Documents] WHERE [Document_id] = @Document_id"
Dim myCommand As New SqlCommand(SQL, myConnection) myCommand.Parameters.AddWithValue("@Document_id", DocumentID) myConnection.Open() Dim myReader As SqlDataReader = myCommand.ExecuteReader If myReader.Read Then
Response.ContentType = myReader("Content_Type").ToString() Response.BinaryWrite(myReader("Document_Data")) End If
myReader.Close()
myConnection.Close()
End Using End Sub It works perfectly. But heres the thing: I want users to be able to right click on the link and chose 'Save Target As'. In IE 7, this works fine. In FireFox it saves the document as 'serveDocument.aspx'. Is there any way to inject the filename that I want to save the document as? Thank you.
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Apr 16, 2006
Is there any way to store a binary or image file into a database record / save a binary or image record back into a file using Transact SQL? If yes, would the "image" data type be most suitable?
(As a background, I am working on a process that deals with incomign emails, and I am using SQL Mail for that purpose. The above is needed to deal with attachments that may come with emails, and which are saved in a physical file on the HDD).
Thanks a lot in advance...
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Dec 11, 2005
I need to write codes to access many image files and wave files and display them on the webpage. Both of these files are stored on the server (as many experts in this forum adviced) and their locations are in the SQL server database. About the wav files, I think I will have to convert them to MP3 first for fast delivery on internet. Since I am a newbie, any help would be appreciated.
Thanks,
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Jul 23, 2005
Hi folks,Is it possible to store Binary Files in MS SQL 2000 ??? Say I have a100K PDF or a 150K word document. Is it possible to store this in afield in MS SQL and pull it out somehow? We're using ColdFusion on theserver on Apache.Thanks,Ringo
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Nov 29, 2006
Hi There,
I am new to VC# and SQL Express. I am currently trying to find a way to store user selected files into SQL Express. I am using a column with the varbinary(MAX) data type. My current thought is to give the user a open file dialog box, and let them select the file they want to upload. On closing this dialog box, I convert the file selected into a file stream and insert into SQL Express.
Is this method a good one? If anyone else can give me pointers or hints to better methods, please do!
Thanks,
Ke
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Dec 11, 2007
Hey everyone,
I'm deploying a desktop application with Sql CE 3.5. I have a collection of files that I would like to be save as a binary format in SQL CE. These files range from 1KB to 5MB. I know I cannot use varbinary(max) , instead I am limited to varbinary(8000), but this obvisously comes short of 5MB. There are articles stating to use the image datatype to get around this. Is this just bad practice, should I keep the files on the file system or take advantage of this work around? Do you have any suggestions?
Thanks in advance,
-- Chris
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Aug 17, 2007
Hi,
I have a website and i am uploading the gif image to the database. i have used varchar(500) as the datatype and i am saving the file in the webserver so the path to it c:intepub....a.gif
my upload table has the folliwing feilds
UploadId Int Identity, Description, FileName, DiskPath varchar(500), weblocation varchar(500). I have a main sproc for the report where i am doing a inner join with other table to get the path of the gif..
So my question is how can i get a picture to show up on the report. .
What kinda datatype the gif file should be stored in the database? If it is stored as a varchar how can i access it and what is best way to reference that particular.
any help will appreciated....
Regards
Karen
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Aug 1, 2006
i have a table with rows of file names and paths. what i'm trying to do is process each file and store it in my sql database. i want to store the files as binary files (they are word and excel and pdf files) anyone know a way to do this? it would especially be useful if i could do this with a console application so i can schedule it
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Sep 26, 2005
I work for a company that makes heat transfers for the imprinted apparel market. We're developing a database of merchandise images for all of our non-design inventory. Using Access we're going to be inserting thumbnails of psd (photoshop) files. We're wondering if there is any way to import multiple psd's into the sql server database into matching records like matching a column named "filename" and the actual filename of the file without having to upload each file individually. We want to be able to dump the files from the database of the matching records, also. This way, once our catalog designer has found which designs they need to put into the new catalog, it will dump the psd's for us. The same for our staffer who does color separations.
Any suggestions out there? If you need me to post further of what we're trying here, I will. This is for the bossman.
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Feb 16, 2004
i need to store a bmp or zipped file in a field of a ms sql db. i read the file using vb6 o.net, and in my mind i think sto store it in binary mode. the files could be more of 12 mega. whitch kind of field a could use?
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Apr 20, 2007
I am using the 3-tiered architecture design (presentation, business laws, and data acess layers). I am stuck on how to send the image the user selects in the upload file control to the BLL and then to the DAL because the DAL does all the inserts into the database. I would like to be able to check the file type in the BLL to make sure the file being uploaded is indeed a picture. Is there a way I can send the location of the file to the BLL, check the filetype, then upload the file and have the DAL insert the image into the database? I have seen examples where people use streams to upload the file directly from their presentation layer, but I would like to keep everything seperated in the three classes if possible. I also wasn't sure what variable type the image would be in the function in the BLL that receive the image from the PL. If there are any examples or tips anyone can give me that would be appreciated.
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Apr 29, 2015
We run std 2008 r2, I need to recreate flat files from their varbinary(max) equivalents in our db. I have a mix of excel, pdf, word etc to recreate. Will ssis be a good tool for doing this? I'm wondering what transform(s) would be involved.
Perhaps I need to cast to varchar 1st and then land the data but if I recall correctly there is a maximum record length in ssis destination flat file rows. And I'm thinking I would have to map the varbinary (or cast equiv) to a row in the destination once for each file created.
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May 27, 2008
Hi All,
i have a table in MS Access with CandidateId and Image column. Image column is in OLE object format. i need to move this to SQL server 2005 with CandidateId column with integer and candidate Image column to Image datatype.
its very udgent, i need any tool to move this to SQL server 2005 or i need a code to move this table from MS Access to SQL server 2005 in C#.
please do the needfull ASAP. waiting for your reply
with regards
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