I'm trying to assign an image which is stored in mySQL database to PictureBox item.
Here is my
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Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim mystream As ADODB.Stream
[code]....
I 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 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 RepliesI have the following code below. I am reading a BLOB image from database, but when I try to display it in the picture box I am getting the 'Parameter is
Code:
Imports System.Drawing
Imports System.Drawing.Imaging
[code].....
I have a form with a lot of PictureBoxes. I created an array of these by name, but when I index the array I cant assign an image to the indexed item. In fact all the indexes appear to be nothing. Is there a way to create an array of controls and access them from the array?
View 2 RepliesSaving BLOB to mysql database using VB.net windows base application
View 8 RepliesI 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]...
I'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)
I 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.
its 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 Repliesi'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]...
I have 52 listview items in my listview1 and I have a picturebox basically I want it where I can click on a single item in the listview and display an image from a url in the picturebox. I basically have it right now that when you click on any item in the listview it just shows the same image in the picturebox no matter which item it is. I need to figure out how to do it separately for each item.
View 12 RepliesI'm trying to build a project where I have a set of products in a listbox. When you select an item in the listbox, a picturebox shows the preview of that certain product.I practically finished the entire project as well as the picture part; however, I realized that the way I set up the coding, I used image locations from my hard drive meaning that someone can't view them on another computer.This is a portion of my coding:
[highlight="Dim PicSelection As String
PicSelection = ListBox1.SelectedItem
Select Case PicSelection[code].....
i'm doing a simple form tat could add picturebox during runtime and i could add several picture into it.
View 5 Repliesim trying to upload my image to my database. I've searched and found a way to do this by uploading the image as a blob to the database.On the field IMG on my Database I have set it to BLOB. how can I send a image to the field?
PS. I tried
vb.net
Dim sqlquery = "INSERT INTO `decap`.`test` (`MD5`,`img` ,`value`)" _
& "VALUES ('C20E743343GDG'," & (OpenFileDialog1.FileName) & " ,'0')"
No luck. I get a file of like 3bytes.
I'm working on a simple image tagging and searching app. I've got my images uploading to the DB, the tags being applied, but am failing when I pull them back - the images don't render. I found this here on SO, but I'm not able to get it working.
[Code]...
I have a List wich contains names of all images that is going to be used in the application. I want to loop through all the pictureboxes and assign each image to a picture box. I tried this:
[Code]...
How do I store BLOB data (e.g. image, document) into the database?
View 1 RepliesI'm trying to zip a file that is stored on SQL Server as a blob image field and when downloading the zip file it says the file is corrupted.. or the file will open but contains some crazy characters. I've tried WinRAR and 7zip and no luck. I checked out [URL] and tried to kind of combine the browser attachment code and the memorystream/byte array code and no luck.
Here is my code snippet:
Try
BinData = DirectCast(dt.Rows(0)("ImageField"), Byte())
Catch ex As Exception
End Try
Dim blen As Integer = BinData.Length
[Code] .....
I want to insert image in mysql database using my vb.net program. Then my php script should be able to read from that database and create a file which can be viewed/downloaded by me.Now I am using vb.net program to connect and insert rec in db. Inserting record works okay. But I dunno how to insert contents of image file.
Dim cmd As New MySqlCommand("Insert into " + tables.SelectedItem.ToString() & " (clientid,priority) values(123,'hi')", conn)
' The above code is able to insert a record Now my table has field called img which is blob type. It can store image but how do I sent that image data using insert statement.I am using MySqlDataAdapter.
how to, by a listview selected item make an picturebox appears?for exemple. got a listview in a form, and a hide picture box, and when i select an listview item, the picture box appears, turn the visible to true.
View 6 RepliesThis 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 RepliesI have application, where is a big image, displayed in picture box, but only a part of image is on the screen (I set display mode "zoom", so it's center). But now, I need to fluently scroll this image using mouse, so when I click on picture box, and move mouse, the visible part of image should be changing.
View 2 RepliesI'm adding the icon image of a process and adding it to a PictureBox. I want the image to be centered, but it's stuck in the Top Corner of the box.
VB.NET
Dim ico As Icon = Icon.ExtractAssociatedIcon(p.MainModule.FileName)
Properties.picProcess.BackgroundImageLayout = ImageLayout.Center
Properties.picProcess.Image = ico.ToBitmap
I'm setting the Layout first and then adding the icon. I've tried the reverse and I still get nothing.
I've just started VB.net and I don't understand the graphics system at all. (accustomed to vb6)
I'm trying to draw a bookcase in my form (or picturebox. I don't really care. Whatever works!). I have images called
top.bmp
bookspace.bmp
shelf.bmp
bottom.bmp.
I'd like to create the bookshelf from those images like so
(top) - 40px high
(bookspace) - 200px high
(shelf) - 40px high
(bookspace) - 200px high
(bottom) - 40px high
All 880px across.
How to get only the visible image on Picturebox
the picture size is 320 x 240 captured from webcam and the picturebox is 240 x 240 the sizemode of picturebox is centered so the image is centered
when saving the image i got 320 x 240 image not 240 x 240
i want to save the image in 240 x 240 pixels how?
I have made a program that has an image moving across the screen. The image changes its movement direction when the arrows are pressed. Now, I am trying to rotate the image (an arrow) to match the direction. Here is the subroutine to rotate the image. It uses the hidden PictureBox2's image (the original right arrow) as the source, because I couldn't think of any other way.
[Code]...
were currently developing a software for our thesis. And were having a problem with the SAVE button. this SAVE button will save the two individual picturebox into one .BMP image when saved.
View 7 Repliesi have a form with a picturebox and a button that when pressed selects the clipboard contents, if a picture, and shows it in the picture box
[Code]...
I have done a lot of googling and tested a few snippets of code i can't seem to get this, all i want to do is show an image in my picturebox1 that is from the web instead of on my harddrive, i thought:
[Code]...
