Image Data Read From SQL Server Does Not Show Up

Mar 4, 2004

Hi Guys,





I've been strugling with this problem all morning today.





Basically I store images in SQL Server 2000 database and then whould like to show them with





<img src="viewImage.aspx?image_id=10" border=1>








My table structure is setup this way





TABLE [userImages] (


[imageFilename] [nvarchar] (128) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,


[imageContentType] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,


[imageFileSize] [bigint] NULL ,


[imageFileImage] [image] NULL )








and in viewImage.aspx I have:





if (dr.Read())


{





Response.ContentType = dr.GetString(dr.GetOrdinal("imageContentType"));


Response.BinaryWrite( (byte[]) dr["imageFileImage"] );


}








I have no prolems retrieving the data from DB. But the image does not display(in IE it shows a broken link image)





What's even more puzzling is I CAN display the same image from HDD like so:





FileStream fs = File.OpenRead("D:\my_image.png");


byte[] buffer = new byte[fs.Length];


fs.Read(buffer, 0, buffer.Length);


fs.Close();





Response.ContentType = "application/octet-stream";


Response.BinaryWrite(buffer);








Am I missing something very obvious. I tried playing around with different ContentType's same result.





In my case I am forced to store images in the DB.





I've seen other examples on the net and theirs work. Please help.





Sincerely,


Vlad Orlovsky

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Hi, I was wondering which is the best way to read data from a txt file and insert each row into sql.
OLE DB Command could be? It will be necesary to work with variables?
My txt file will have a defined width (if it is necessary to know). I will have many rows with many columns. I have to map eah column from the txt file to it's corresponding column in sql server and insert data into it for each row.
Thanks for your help!

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Read Large Binary Data From Sql Server 2005

Jul 14, 2007

Hi I've followed a tutorial on how to write and read varbinary(max) data to and from a database. But when i try to read the data i get the error that the data would be truncated, but only when the varbinary(max)  is greater then 8kB. I've used a system stored procedure (sp_tableoption) to set the table that holds the data to store data outside rows. To select the data i'm using a stored procedure:               SELECT imageData , MIMEType FROM Pictures WHERE (imageTitle = @imageTitle)        And then using an .aspx page to Response.Write the data:Using conn As New sql.SqlConnection            conn.ConnectionString = ConfigurationManager.ConnectionStrings("myConnectionString").ToString            Dim getLogoCommand As New sql.SqlCommand            getLogoCommand.CommandType = Data.CommandType.StoredProcedure            getLogoCommand.CommandText = "GetPicture"            getLogoCommand.Connection = conn            Dim imageTitleParameter As New sql.SqlParameter("@imageTitle", Data.SqlDbType.NVarChar, 200)            imageTitleParameter.Value = Request("imageTitle")            imageTitleParameter.Direction = Data.ParameterDirection.Input            getLogoCommand.Parameters.Add(imageTitleParameter)            conn.Open()            Using logoReader As sql.SqlDataReader = getLogoCommand.ExecuteReader                logoReader.Read()                If logoReader.HasRows = True Then                    Response.Clear()                    Response.ContentType = logoReader("MIMEtype").ToString()                    Response.BinaryWrite(logoReader("imageData"))                End If            End Using            conn.Close()        End Using  Can anyone please help me with this?!

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How Can I Read Data From Spreadsheet (Excell) To SQL Server 2000?

Nov 18, 2005

i have data on a spreadsheet and i need to read it to a table in SQL server ? how can i do that ? some one refere to me a method for that but i need to see what other think is the best option and the most effecienet way let us say!!

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How To Read Data From Remote Server Inside A Transaction?

Nov 23, 2005

Hello, everyone:

I have a local transaction,

BEGIN TRAN
INSERT Z_Test SELECT STATE_CODE FROM View_STATE_CODE
COMMIT


View_STATE_CODE points to remote SQL server named PROD. There is error when I run this query:

Server: Msg 8501, Level 16, State 1, Line 12
MSDTC on server 'PROD' is unavailable.
Server: Msg 7391, Level 16, State 1, Line 12
The operation could not be performed because the OLE DB provider 'SQLOLEDB' was unable to begin a distributed transaction.
OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionJoin::JoinTransaction returned 0x8004d01c].

It looks like remote server is not available inside the local transaction. How to handle that?

Thanks

ZYT

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DB Engine :: Read Unicode Data From Server 2008

Oct 18, 2015

way to read data from database already stored as question marks .that because by mistake i insert the data "arabic" from  the VS as sqltext but the field in the database is nvarchar now i want to get the data back.

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