Unknown Exception When Retrieving Image From SQL 2005 DB
Oct 19, 2009
I am trying to retrieve an image from a table in sql 2005 server. The field is set to image. I am trying to put the image strait into a picture box.
Here is my code I am using:
Dim strSQL As String = Nothing
strSQL = "select top 1 i.image_data" & _
" from " & mdlMainLib.GetNGConfigInfo(False, False, True) & ".dbo.person as p" & _
" inner join " & mdlMainLib.GetNGConfigInfo(False, False, True) & ".dbo.images as i on p.image_id = i.image_id" & _
" where person_id = '" & sPersonID & "'"
[Code] .....
On the line ME.pb1.image = image.fromstream(stream) I keep getting a "ArgumentException was unhandled, Parameter is not valid." And that all I get to go on.
i save image into a database correctly and now when it come to retrieving i get an error message when the photograph column is NULL.Is there any way i can check if it is null then i execute different code else it return the image.This is what i am using for now
Dim barrImg() As Byte Dim cmdSelect As New SqlCommand("select Photograph from Personal where MyID=@ID", connect)
i have been in state of hectic for the last 2 days making lot of research and finally made this code worked it for me. My problem is that, how can i make this code retrieve the image from sql server database...use picturebox to load it in the vb.net program.
Dim myfilelocation As String = "C:myPicturesmyimage.png"
[code]....
Is it also possible to change the location of image where its getting the image. i mean, i would like to tell other computers to get their images from anywhere as long as it brings images to my server.i mean, say that comp1 which is connected to my database server for storing and retreiving information, gets his image from his location then the application sends the image to my server...the application retreives the image from the server..as simple as that.
I decided that the upgrade wizard was wrong and that I DIDN'T want to use the AxListView control and that I wanted to use the .NET ListView. So a bunch of replacing and rewriting how the ListView works and viola, no more compile errors. The problem occurs when I check my warnings ....
"Warning 1 Unknown name. (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME))" "Warning 7 Object does not match target type."
Both of these errors occur, the first one points to something totally unrelated ....
And finally in the last few minutes this keeps popping up
Me.Frame7.Controls.Add(Thingy)
which trips the error
"Warning 3 Method 'System.Windows.Forms.Design.ControlDesigner+DesignerControlCollection.Add' not found."
Yes, the Thingy is the same in the first and last error, and the middle error is where the Thingy is located. Is my problem stemming from changing the old AxListView into the .NET ListView and dealing with the fallout from said decision?
I have written a function to generate a random string with specified length. In that I have used 'Random' function. when I have executed it, it is throwing an unhandled exception.Please suggest me some solution. Below is the code I have used:
I have recently updated a legacy compact framework application to support Windows Mobile 6.5 but after going through my backwards compatability testing I have an issue with the WinCE 5 device.When attempting to run the application from both the EXE and the debugger I get the "An unhandled exception of type 'System.TypeLoadException' occurred in Unknown Module." exception but its not giving me any idea which dll / type it has issue with.The changes do work on the Windows Mobile 6.5 Motorola device and the Pocket PC 2003 Psion Device but not on the WinCE5 Psion device.Does anyone have any ideas how I can find out which reference is causing me the issue. I have tried removing the new references to the Symbol barcoding and imaging libraries but I am still getting the same error.OK, it looks like the .Net Compact Framework installation had corrupted some how. I flattened the device, reinstalled and everything appears to be working.
System.ExecutionEngineException was unhandled Message: An unhandled exception of type 'System.ExecutionEngineException' occurred in Unknown Module.There are no further details and the stack trace window is blank I was just wondering how it would be best to work out where this error message is happening - i really don't want to put a million debug.prints in there to work out what functions were last called etc.
I am retrieving a large BLOB and keep getting an Out Of Memory Exception. It occurs when I use a SqlDataReader to either check if the column is NULL, or if I try to read it and assign it to a Byte type of parameter, or if I use Response.BinaryWrite.
My program reads a 3rd party data text file and I give the user the ability to add a row. The problem I am having is one users text file contains an extra tab at the end of each datarow thereby creating an extra column when i view it in DataGridView it gets labled "NoName"
Moving foward I get the following error upon trying to isnert a new datarow. The INSERT INTO statement contains the following unknown field name: 'NoName'. Make sure you have typed the name correctly, and try the operation again.
I have a program which use an API. One of the functions of this API has threading.Once I start this function. It will continue reading data and once the data is found, it will pass me the data to a function let's say functionnd I call a delegate functionB from this functionA.And at some point this functionB throw me an error of "Collection was modified; enumeration operation might not execute.".Does anyone know what this mean?I google it and found that this error was caused by "For Each or For" loop.But in my program I don't have any for loop.
VB.Net Public Sub ReadTag(ByVal sender As Object, ByVal e As TagReadDataEventArgs) Try
Using Access 2003 and VB code, I have created a form with a number of labels. The labels will display an employee's names. I have named the labels name1, name2, name3...etc. Using an ADO data set and DCount I have determined the number of names in an Access table (the number of names can vary). What I want to do is for each record in succession to pick the first name and surname from the data set , combine them into a full name (this part has been successful), and then set the full name into the label caption in succession. Example: full name 1 into name1, full name 2 into name2, full name 3 into name3... until all names appear as labels on the form.
I created a counter to and a variable to increment the label number but when I address the caption property of the variable containing the new label (e.g. name1, name2..etc.) it throws an errer at runtime. Here is the code:
I have recently moved from VB 2003 to VB 2005. While I am finding a lot of the new features quite useful, I am having trouble with List (of T). I want to be able to do something like this
Function GetList(MyObjectType as Type) as datatable Dim list as new List(of MyObjectType) End Function Function GetList(MyObjectType as String) as datatable Dim list as new List(of GetType(MyObjectType)) End Function
VB 2005 does not allow me to do this at all. Must the "type of" be srongly declared at all times? Can't this be done dynamically?
quick and easy: I have several pictureboxes with images that may or may not have the same image from my.ressources . And then I want to go through the matrix and check to see whats their images are. I tried to do:
I am running into a problem while attempting to to retrieve data from a database. One of the items is an iage and it's throwing an error when I try to convert the byte array to a bitmap.Here is what I have. The exception "Parameter is not valid." is being thrown when on the line bmpImage = New Bitmap(stream)
Private Sub GetCatList() Dim strSelect As String strSelect = "Select CategoryID, CategoryName, Description, Picture"
I have a requirement of storing employee's image in databse and retrive them in a form. I could insert image into the database but when I am retriving it , it does not get working. So if anybody knows the code for retriving image from database and displaying in a form ?I am using MS SQL Server 2005 as databse.
Dim cmdstring As String = "SELECT A.ID, ProfileCategory, YearLevel, LastName,FirstName,MiddleName, Section,SchoolYear,StartTime,EndTime,Days,Laboratory, B.Image FROM ProfileInformation A JOIN Photo B ON (B.ID = A.ID) WHERE A.ID=" & lEmployeeID
[code].....
i'm trying to retrieve image from database to my picturebox. but ive got this error -onversion from type 'Byte()' to type 'Byte' is not valid.
I have completed my vb project and have created the set up files as well.. Now when I try to install my program on another machine then it gives me an error. I found out the problem and it seems to be two of the images are not loading even though i have saved them in my application folder.. But when i save them in the resource folder the program runs but does not displays the images stored in the resource folder.
dim tick as image tick = My.Resources.ResourceManager.GetObject("button-tick.png")
I�m having trouble with the picturbox control, my problem in its basic form is:I have a picture Box array consisting of 9 picture boxes each with a different image in loaded at run time these are names 0.jpg to 8.jpg I then have 2 more picture Boxes named ansOne and ansTwo. I have made it so you can drag the images of these numbers to either of these picture Boxes It this next part I�m having trouble with:
I then want to have thoughs images represent a sum so when a button is clicked it adds or multiplies thoughs images together but as numbers ("badly put I know ")I am very unshore of where to start. After the image has been dragged how would I know what image has been dragged and turn that in to its integer equilivent?I had thought of using split string or something similar to just get the number before the .jpg so tried picAnsOne.imageLocation but that throghs a null reference And that�s as far as I have got.
is there a way in storing image and retrieving images using ms access and display in picture box randomly or just like a slideshow?which slides form left to right?or vice versa..i have some codes here but i does not display.
I have manage, to allow user to browse through their files and insert an image path into a local database. The program will then retrieve the image from the image path and will be stored into ImageList. The Listview1 will then add the pictures of Imagelist into the ListView1.Items. Now my question, how can i retrieve back the path of the image when the users click on the selected image from the ListView?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Table = "ItemList"
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