Save BLOB To Mysql?
May 13, 2011Saving BLOB to mysql database using VB.net windows base application
View 8 Replies
ADVERTISEMENT
Retrieve MySQL Blob - Save The File To Disk
Aug 29, 2010I 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.
Store Picture As BLOB In MySQL Database And Retrieve From MySQL Db Directly Into Picturebox ?
Apr 11, 2011I 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]......
Image Into Blob MySql VB2005
Feb 15, 2010I have a project where the user wants an image stored in a Blob field of a MYSql database. I have been searching for info on the net but so far have not found a good solution for this.In this case the record will already exist in the database and I will need to insert the image into the existing record based on the recordid.Is there a simple way to do this perhaps with a stored procedure and an execute statement. I have very little experience with MySql and little with storing images in a database as well. Most often I will store the images as files and use a pointer in the db record but this user wants it in the db so here we are.
View 1 RepliesWrite A Blob File To MySQL?
Mar 17, 2009I am recieving an error when I am trying to write a blob file to MySQL. figure out what I am doing wrong. Here is my code:
[Code]...
VS 2010 Uploading A Picture To Mysql Db Using Blob Datatype
Jul 21, 2011its been a while since i was here... it's nice to be back... anyway, i was wondering how to upload a jpeg picture to a blob datatype field in MYSQL. i know i could just put the picture path in a varchar type field and just place the picture somewhere locally and retrieve it programatically. but my project does not require me to do so.
View 2 RepliesVS 2010 Uploading A Picture To Mysql Db Using Blob Datatype?
Jun 1, 2010i've created a pluginframework and i have some problems with it. At first you should know that the framework is only an interface designed like this:
[code]...
[2008] Assign Image (BLOB) From MySQL DB To PictureBox Item?
Jan 20, 2009I'm trying to assign an image which is stored in mySQL database to PictureBox item.
Here is my
...
Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim mystream As ADODB.Stream
[code]....
Receive Sms And Save To Mysql Using Terminal?
Jan 28, 2012It is possible to automatic receive sms and save it directly to mysql database using terminal in vb.net?
View 1 RepliesSave 0000-00-00 Date In Mysql
Mar 10, 2011below is the value for my date when it is saved. my problem is when i save the null value ..error says argument prompt cannot be converted to string..
[Code]...
Save Date To Mysql Database?
Sep 7, 2010I am trying to save a date to a mysql database and usually the only format permited to be saved in the table is YYYY-MM-DD
On the form the datetime picker is formated like this MM-DD-YYYY
The thing is i am using dataset created by wizard to save the data, what should i do to be able to format this for save and read because it is giving me errors.
Save Path Picture Using Mysql?
Jun 11, 2011I'am using vb.net and MySQL as database. How do I save the image path to mysql database. So later when the customer list form when I select a customer and so appear on the customer edit form automatically direct the picture appears too
View 1 RepliesCheck File Size Before Save In MySQL?
Jun 4, 2011I use Visual studio 2008 I use MySQL 5.1 I have created een database (test) table (table1 ) with field (Images) Data Type mediumblob size The maximum length of mediumblob is 16777215 (2^24 - 1) characters
I want to Check file size before save in MySQL table1.I want to avoid getting an error message when the image is too large for the mediumblobb field I now use the following code Dim conn As New MySqlConnection Dim cmd As New MySqlCommand
[Code]...
DB/Reporting :: Save Image Into MySQL Database?
Jun 16, 2009i am trying to save image into MySQL database ...is there any easier way to do that ?
View 1 RepliesSave Data Entry To MySQL Database?
Apr 1, 2012I have an assignment where I have to develop a Windows application using Visual Basic .NET. From the form that I have designed, it should save all records in a table in a MySQL database. How should I do this? Here's what I've got so far:
Imports System.Data
Imports System.Data.SqlClient
Public Class AddMember
[code]....
Save Data In Mysql Using 2010 Express
Jan 18, 2012I've been reaserching for 3 hours on how to save data and retrieve data in mysql database I am using vb.net 2010 it would be nice if someone will post some codes or links
View 7 RepliesSave Fingerprint In Mysql Server 2008?
Dec 2, 2011how to save fingerprint in mysql server 2008 using vb2010.? i have already the sdk.
View 1 RepliesSave Image And Drawing Into MySQL Table?
Jun 25, 2009I'm currently working with these codes. Am I able to save my image and drawing into mySQL table? what codes should I use in order to save them into my table and I may need to able to retrieve it in a later part.
my codes:
Code:
Public Class Page_2
'Declare Starting Points For Drawn Objects
Private sStartX As Short
Private sStartY As Short
[code]....
Save ITEMS On Listbox To MySQL Database In VB?
Jun 11, 2011How to save ITEMS on listbox to MySQL Database in vb.net.
View 10 RepliesSave Money Textbox1.txt In MySQL Table?
Jun 11, 2011I use Visual Basic 2008 + MySQL Database.I have create a textbox1.text .MySQL Table Test with Two Columns[code]...
View 4 RepliesVS 2008 Save Image To MySQL Database?
Mar 9, 2011This has really been a problem for me in the past and with deadlines, we decided to just have the app copy the image to the server, rename it and save the link in the database. This is the worst way of saving that kind of sensitive data, I know. We now have the time to fix that.
View 4 RepliesHow To Save Date Time Picker Object Value To Mysql
Aug 3, 2011i want to save the value of date time picker control object to mysql but it kept saying error.the code perfectly works for text box values but it doesn't work for date time picker control.
View 1 RepliesSave Listview Data To Mysql Query Browser?
Nov 15, 2011this is the code for my save button
Dim iCount As Integer
Dim iLoop As Integer
Dim query3 As New MySqlCommand
[Code]....
every time i hit save, there is no error but it does not save on my database.
VS 2008 : Upload/save File To Mysql Database?
Aug 12, 2009i have a program in vb.net and my program will upload any type of file to my database, e.g common ext. to upload (.doc.xls) Im using mysql as database?
View 1 RepliesSave Listview Data In Mysql Query Browser Database?
Nov 17, 2011Dim lvitem As Object
Dim iCount As Integer
Dim iLoop As Integer
[code]....
That is my code. message box show up but the record is not saved in my database?
Save String Characters As Integer From A Listbox To Mysql Database?
Feb 26, 2012Is that possible to save values from a listbox to mysql database? I guess yes. I have a list of values in a listbox obtained from splitting a file. The strings are like numbers but they are of type string. What I need is to get those values in the database in the integer type. How can I proceed?
View 8 RepliesVS 2008 Convert Video To Binary To Save To Mysql Database?
Jul 14, 2011how to convert video file into binary to save to mysql database and how to retrieve it.
View 1 RepliesHow To Get Blob Into PictureBox
Jul 18, 2012I'm already using ORacle 11G. The problem is when I'm using System.Data.Oracleclient to pull blob into picturebox it's ok, but when i'm using OracleDataaccess.Client / Types.....there no image appear n comeout error " Parameter is not valid" in this coding :-
Dim bmp As Bitmap = Image.FromStream(ms)
How To Declare A Blob Field
Sep 19, 2011How can I declare a blob field in an access database with SQL?
View 1 RepliesBlob Field In Query String
Feb 25, 2010I had been using this way for while, and it seems it work fine with char and numbers.
Dim MyVar1 as String = "Hello"
Dim MyVar2 as Integer = 1
Dim MySQL = "Select * from table where field1 = '<field1>' and Field2 = <field2>"
MySQL = MySQL.Replace("<field1>",MyVar1).Replace("<field2>",MyVar2)
msgbox(MySQL)
But, when I have to deal with blob field, where I store "wav file" for example, I had to read it as array of bytes, and the only way I find to insert the array of bytes in my query string is by using the command.AddParameter
Dim myfile As System.IO.FileStream = System.IO.File.OpenRead("full_wav_file_path")
Dim myArray(myfile.Length) As Byte
myfile.Read(myArray, 0, (myfile.Length))
[Code] .....
Is there another way to insert it without addParameter?