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12.15.2007 at 08:33PM PST, ID: 23026064
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Save image into mysql database blob

Tags: image, save, database, mysql, blob
Hi,

i am trying to save a image file into a mysql database. below you will find my code ive tried to copy from others.

I get a "Error      1      Operator '&' is not defined for types 'String' and '1-dimensional array of Byte'" where I have the arr variable on the mycommand.commandtext line. How should i be coding this so that it accepts the arr variable into the insert sql?

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Private Sub UploadImage()
 
        'Read selected file and save as variable arr in blob format. (byte format)
 
        Dim arr() As Byte
        'Resize array so that it can accomodate the file
        ReDim arr(FileLen(OpenFileDialog1.FileName) - 1)
        FileOpen(1, OpenFileDialog1.FileName, OpenMode.Binary, OpenAccess.Read, OpenShare.Shared)
        FileGet(1, arr)
        FileClose(1)
 
 
        Dim conn As New MySqlConnection
        Dim myCommand As New MySqlCommand
 
        conn.ConnectionString = MySQLGlobal
 
        myCommand.Connection = conn
 
        myCommand.CommandText = "INSERT into images(filename, extension, data) VALUES('" & OpenFileDialog1.FileName & "', 'jpg', '" & arr & "')"
 
 
        Try
            conn.Open()
            myCommand.ExecuteNonQuery()
 
        Catch myerror As MySqlException
            MessageBox.Show("Error Connecting to Database: " & myerror.Message)
 
        Finally
            conn.Dispose()
        End Try
 
    End Sub
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Question Stats
Zone: Programming
Question Asked By: superlative
Solution Provided By: GreenGhost
Participating Experts: 2
Solution Grade: A
Views: 184
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12.16.2007 at 03:10AM PST, ID: 20480227

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12.17.2007 at 04:02AM PST, ID: 20484155

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12.29.2007 at 10:34AM PST, ID: 20548497

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01.20.2008 at 06:53AM PST, ID: 20701264

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12.16.2007 at 03:10AM PST, ID: 20480227

Rank: Guru

You can't put a byte array in a string. Use a parameterised query:

myCommand.CommandText = "INSERT into images(filename, extension, data) VALUES(?FileName, ?Extension, ?Data)"

myCommand.Parameters.Add("?FileName", OpenFileDialog1.FileName)
myCommand.Parameters.Add("?Extension", "jpg")
myCommand.Parameters.Add("?Data", arr)
Accepted Solution
 
12.17.2007 at 04:02AM PST, ID: 20484155
 
12.29.2007 at 10:34AM PST, ID: 20548497

Rank: Guru

Checking back to see if you had any progress?
 
01.20.2008 at 06:53AM PST, ID: 20701264

Rank: Genius

superlative,
This question has been classified as abandoned.  I will make a recommendation to the moderators on its resolution in approximately four days.  I would appreciate any comments by the experts that would help me in making a recommendation.

It is assumed that any participant not responding to this request is no longer interested in its final disposition.

If the asker does not know how to close the question, the options are here:
http://www.experts-exchange.com/help.jsp#hi331

TheLearnedOne
EE Cleanup Volunteer
 
 
20080236-EE-VQP-29 / EE_QW_2_20070628