SQL Server Open File From Image Field?
Apr 25, 2012
I have a field in a SQL Server 2005 DB of type 'image' that contains documents, mostly pdfs. When I view the field in the database, it looks as though the data is stored as a hex string. I have extensively googled and came up with the VB.net function below to convert the field to an actual file, but it only outputs a file containing the string of hex characters rather than the file that the field is supposed to represent.
This is a sample of the fields' data (I have truncated it for privacy purposes):
[Code]....
And is it possible to open the file straight from a query in SQL server?
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Jul 14, 2010
I'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] .....
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May 5, 2009
I am Delphi programmer and I am new in .Net VB code to get text from sql server image field to StringCollection, in Delphi I use code:
MemoryStream := TMemoryStream.Create;
BlobStream := SomeQuery.CreateBlobStream(SomeQuery.FieldByName('MY IMAGE FIELD NAME'),bmReadWrite) as TBlobStream;
BlobStream.Position:=0;
MemoryStream.LoadFromStream(BlobStream);
[Code]...
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Feb 25, 2011
I have a client/server application set up that the client sends a word file to the server and then the server converts that word file to a .TIF and sends the image back.The stuff I have now works.Say if I sent the size of the file and the actual file byte() to the server back to back, would the NetworkStream contain both back to back? This what I though would happen. So I implemented a kind of 'turn' based interaction during the duration of the conversion process.
[Code]...
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Apr 25, 2011
how to store CSV & Text file to an Image Field in SQl table. the table is using by some other application that's why i could not change the field data type.
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Sep 18, 2008
I am interested in uploading an image to a file field using httpwebrequest or similar however I am stuck on a few things. Would it be a matter of add the file field and the image I would like to upload as the value? I'm not looking for code, I would like to learn how this can be accomplished.
[Code]...
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Apr 28, 2010
saving data from a text field and multiple combo boxes to a file on a server in visual basic 2008
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Nov 6, 2009
currently im working on a tool which will capture screenshots. after taking screenshots it will save it as jpeg fiel. wat i need to do is if click button to the current image should open with MSpaint. So that the user can edit the image and can save it
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Mar 20, 2010
I am trying to open a .jpg from a folder in my debug and insert it into a picturebox...
I have no Idea how to do this. I tried FileStream but it will not convert system.draw.bitmap from string....
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Dec 27, 2008
Code that opens image file this code works properly
Private Sub MenuItem4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FromFile.Click
PBDisplay.Visible = False
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
PBDisplay.SizeMode = PictureBoxSizeMode.AutoSize
[Code] ......
This code is what I am using to save image after it is re sized, It will not save the new image, it saves the old image and the old size. I am using a picture box to import the image into, then I am resizing the picture box and the image. But when it is saved it reverts to the original image.
Private Sub MenuItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Save.Click
If SaveFileDialog1.ShowDialog = DialogResult.OK Then
PBDisplay.Image.Save(SaveFileDialog1.FileName)
End If
End Sub
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Apr 14, 2011
how to load a image in other extension? for example I have other program that contain an Image, when I browse with my program, it's only show the Image only...
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Dec 5, 2009
I have a button that opens a selected file depending on the file extension (doc, docx, or pdf)... the problem is when I have a pdf file is that the file is displayed in the browser, and when I hit the back button I come back to the original page - but the buttons won't then work...
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Aug 31, 2011
am trying to replace a image in a picturebox with a new image. I am getting the warning that the file is open (locked). It works a few times and it bomb's out with the warning. How can i unlock the file? I am disposing the current image and setting it to Nothing. [Code]
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Jun 8, 2011
I'm a beginner vb.net programmer..I have a difficult that is how can I save image file from vb.net to sql server
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Jul 8, 2010
I have a form , in a website which has [code]...
Now, if any user enters the year, and uses the browse button to select any photo, and then clicks submit, i want that particular photo to be uploaded and saved on the my file system ( where the code is present).
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Feb 3, 2011
Using VB.net 2010, Windows 7, and SQL Server Express 2008 R2.
I am trying to save an image from a picture box to an image field in SQL Server. The line of code below produces an error. What am I doing wrong?
...code
objCommand.Parameters.AddWithValue("@ss_no", mskSS_No.Text)
objCommand.Parameters.AddWithValue("@d_code", txtD_Code.Text)
[Code]....
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Feb 22, 2010
I'm not sure what to use to insert a file that's located on the server into the sql database. I've read a bunch of articles but none of them show how to just grab a file without using fileupload.
[code]...
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Apr 30, 2010
I want to send a image file from server to client?i am using this code for sending but i can't send the image....... and i also need some receiving code.
1.Public Sub SendImage(ByVal sndImg As String)
2.Try
3.Dim ns As System.Net.Sockets.NetworkStream
4.Dim client As System.Net.Sockets.TcpClient
[code].....
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Jan 27, 2010
Here is the code I used. everything works fine, but i need a little different code to upload image.
Private Sub btnAttach_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnAttach.Click
Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer)
If iLength = 0 Then Exit Sub 'not a valid file
Dim sContentType As String = File1.PostedFile.ContentType
[Code] .....
I am not using with cmdinsertattachment. I am using Html - Input(File) from the HTML toolbox. the ID of the input file is ID="upldimg". So how do I insert this into my table which is -
Column1 ID identity
Column2 Img image
Column 3 Description varchar(200).
The insert statement like -
INSERT into table1 (Img, Description) values (???, txtdescription.text)
Do I do upldimg.text in the insert statement?
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Dec 16, 2010
I am wanting to be able to have a feild in sql server database that the user can open a file dialog and select an image to insert then save. can this be done, and how?
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Jun 7, 2011
I am building a site for our company to share files between all users but administrators will be the only users who can add new files to the site.I need the administrator to be able to upload a file to a folder on the server and at the same time create a new record for that file and include a title, description, url of file, and other details in the database. In one click.
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Jan 27, 2010
this is the code i used from this site. everything works fine, but i need a little different code to upload image-here's the code -
Private Sub btnAttach_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnAttach.Click
Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer)
[code]....
i dont have these parameters. i only have 1 field in sql server table that says Img and has image datatype. how do i use this code to get my image in db using this insert statement?insert into table1 (img) values (???)
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Jul 12, 2010
I'm having issues with the way I've been reading my image datatype blobs from my SQL database (code below). This code works fine when I access this page directly. The PDF will open and works just fine. However, when I try to use this page to download a file and save it to the file-system programmatically, it fails (500 server error) and I've verified that it's the same URL either way.So, my question is what is the best way to download a file from a database image datatype and save it to disk?PDF.aspx
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Collections.Generic" %>
<script runat="server">
[code].....
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Jan 5, 2012
How to correctly insert image data from XML file to database table using sql server CE and openxml,XML file is written by vb.net DataSet.WriteXml method?image data is stored in database table is :
0x89504E47.my XML file Content after written by WriteXml method is :
<?xml version="1.0" standalone="yes"?>
<Data>
<Table>
<image>iVBORw0KGgoAAAANSUhEUgAAAcIAAAGuCAYAAAADLg..</image>
</Table>
</Data>
but after inserting with openrowset and openxml using stored procedure to another database table its value changes to this :0x2F0039006A002F00340041004100510.and is not the first value and raises an error in vb.net for opening image from database.
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May 4, 2012
Execute the default image viewer when i pass the path of the image.
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Oct 3, 2011
I am trying to edit an image. I can open the image with Picturebox1.load(mypicture)
I can change the pixels/edit the picture by Dim img as new bitmap(picturebox1.image)
[Code]...
now here is the weird part. When I save the image the filesize INCREASES..but the picture dimensions are the same Example... TEST.PNG 1.3KB, when opened up via picturebox/saved the image is now 2.3KB
not sure why...i even though I specify system.drawing.imaging.imageformat.PNG
samething with JPG... it actually SHRINKS it evenmore.. example 88KB jpeg.. saved as jpeg is now 47.7KB...
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Jun 22, 2009
have this code to connect to local server:
[Code]....
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Apr 10, 2009
How can i insert an image file from images folder to sql server database. I have <input id="File1" runat="server" type="file" style="width: 397px" />on my aspx page. I want to insert a blank.bmp file if user does not choose any image file. this blank.bmp file is in my images folder.[code]how can i insert an image from images folder.
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Apr 13, 2010
I have an openfiledialog,when the user chooses a file(.doc,.xls,.pdf...),this file is saved as Image in the table
the code I am using is[code]...
My problem is how can I use the Image field to display the file to the user event if the file is deleted from the hard disk
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Jan 19, 2011
I am working on an application that pulls a field from a SQL Server table that has numeric values separated by commas, for example (1, 3, 4, 6). I need to load this field and somehow load it into a numeric array. However, I can't seem to come up with a good solution. Here is what I have tried:
Dim PagetoSign as Integer()
PageArray = Split(_DataRowView("PagestoSign"), ",")
Dim _PagetoSign As String = ""
[Code]....
However, I receive an error message when it enters the for each loop. I'm not married to this method if there is a more elegant way.
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