Asp.net - IHttpHandler For Images Producing A Stackoverflow In IE?
Jun 24, 2009
I have a directory of images that reside outside the context of my web application that I need to serve to the user. Currently I'm using an IHttpHandler to serve the images and using some javascript to navigate through a set of images (the navigation is primitive for now). I followed examples for using IHttpHandler to serve images closely but when I view the images in firefox the browser hangs and when I view in IE I get a "Stack overflow at line: 0".
Code for the IHttpHandler
Public Class ShowImage : Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) _
Implements IHttpHandler.ProcessRequest
[code]....
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Aug 30, 2010
I have a program that uses Lucene.net in ASP.NET (VB.NET), when you search a term, results are stored in the Lucene.net data structure "hits".I want to read out the hits into an data structure and work with them, after that I display them in a DataGrid.By searching a term with a lot of results, often (but not always) there is an error by following code :
For i = 0 To results - 1 Step 1
Try
Dim tmpobj As New object_hit(( _
hits.Doc(i).Get("title") + _
[code]....
I checked the server; it's a dwh server and has no problems to execute the program.At first I used a ReDim Array, but now I use a List(Of T).
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Jun 27, 2012
[URL]notice that the tag topic count for C# is in excess of 8900 while the vb.net tag topic count is sitting at 1019. Does this mean that there is a shift towards c# as a .net language of choice. the only reason I decided to build some applications for work using c# was that I like curly braces - after all vb has the same language support as c#, doesn't it so there should be no advantage to choosing one over the other; other than curly braces;)
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Jul 9, 2009
i have identified that the problem here is in the following line:
Tbl_POBindingSource.Filter = Tbl_POBindingSource.Filter & " AND " & Partfilter
Now here is my whole thread:
Do While _filter = 0
Try
Dim POFilters As String = ""
[code]....
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Apr 2, 2010
I have an StackOverflowException in one of my DB functions that I don't know how to deal with. I have a SQLite database with one table "tblEmployees" that holds records for each employees (several thousand posts) and usually this function runs without any problem.
But sometimes after the the function is called a thousand times it breaks with an StackOverflowException at the line "ReturnTable.Load(reader)" with the message: An unhandled exception of type 'System.StackOverflowException' occurred in System.Data.SQLite.dll
If I restart the application it has no problem to continue with the exact same post it last crashed on. I can also make the exactly same DB-call from SQLite Admin at the crash time without no problems.
Here is the code:
[Code]...
When crashes, the reader has "Property evaluation failed." in all values.I assume there is some problem with allocated memory that isn't released correctly, but can't figure out what object it's all about. The DB-connection opens when the DB-class object is created and closes on main form Dispose.
Should I maybe dispose the mycommand object every time in a finally block? But wouldn't that result in a closed DB-connection?
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Nov 28, 2009
I need some advice to make a small application running, i need to calculate a integer prime and i use a recursive function inside a while true loop, first i get a random number with random class and then i call the recursive function that checks if it's prime, if it's prime it exits the while. Sometimes it works others throws the stack overflow exception, what i must do to get rid off this exception?
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Dec 19, 2011
I have made a login system using OpenID using the following code:
[Code]...
It takes the user to Google for authentication. I only want to store the user information like email, full name and sex in my DB. I have written the following code to retrive email from Google but nothing is returned:
[Code]...
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Sep 27, 2011
I have a search function in my program that uses a background worker in order to get the results. The Progress changed event is used to update the listview with the new item.[code]
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Dec 18, 2009
I feel like an idiot for asking this question again, as I know it's been asked several times. I cannot for the life of me get this code working even with the answers that have already been provided, so I'm hoping that by offering my current code, someone can help me determine where I'm going wrong:
Dim RSSReader As New Xml.XmlTextReader("http://stackoverflow.com/feeds")
Dim RSSDoc As New Xml.XmlDocument()
Dim NSMgr As New Xml.XmlNamespaceManager(RSSDoc.NameTable)
NSMgr.AddNamespace("atom", "http://www.w3.org/2005/Atom")
RSSDoc.Load(RSSReader.GetRemainder())
[Code]...
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Oct 7, 2011
I understand that this is bad programming practice and redundant coding but I am curios.
I am simply counting a number up to 9999999 in a while loop. The Add() function simply increases that number and prints it out.
Inside the Add() Function I call the Add() function.
My program successfully prints out 12000ish numbers before I get a StackOverflow Exception.
So my question = Is there any way to ignore this error and keep counting?
I have tried On Error Resume, Try/Catch, and throw
My code is as follows.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
While number1 < 9999999
[Code].....
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Dec 16, 2011
Expression not producing a value [code]...
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Jan 9, 2012
I have 2 classess. Role and User like this
Role
Public Class Role
Public Property RoleID As Integer
Public Property CreatedBy As User
[code]....
The situation is like when we create roles, we will save who created this role. So i have a CreatedBy Property of type User. Similarly when we create a User, we will mention what role the new user belongs to .So i have a property called "Role" of type "Role". This circular reference giving me StackOverflow exception as its recursive when i create an object of User class.How do i handle this ? should i restucture my entties ? how ?
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Apr 3, 2009
I have done some reading and it seems that this error comes from recursive calls but I have not done anything in my form_closing handler except for call me.close, that's it.
So I don't understand how this exception has entered my project. All of my data and functionality is still working as I expect. It just seems to throw this exception when I try and exit my project.
what I could check to prevent something like this from happening?
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Aug 18, 2010
How would I go about using certain frequency tones in my program? I need to be able to generate various tones at frequencies from about 90hz to about 2khz or more (audio frequencies). For instance, how would I play a 120hz tone for 10 seconds?
[Code]...
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Mar 8, 2012
so im using two split containers to show four different panels at the users request using two buttons. Split container 1 works fine and will only show the panel requested by the user but split container 2 when i hit the button does not hide panel one and only show panel 2 it shows both panels at the same time yet the code for the buttons are exactly the same
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShow.Click
[code].....
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Mar 17, 2012
I need to create an array, then iterate through a string, adding the string value to the array only is it does not already exist, to produce an array of unique values. The issue I am having is with the array.length operation - on a array that is nothing I am unable to retrieve the array length (0), as such I am unable to redimensionalise the array to be array length (must be array length as arrays are indexed from 0), providing me the ability to add the new value to the array and then continue the loop until all values have been checked to see if they exist within the array (using contains) and the value contain only unique values..
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Apr 22, 2009
been working on a large scale project and Iow looking into the document print engine for the application. been a while since Ie built an app that retrieves data from the database and outputs to Word. I generally always used the mail merge feature of Word but after reading the link above this seems far easier.
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Nov 8, 2011
I have the following xml:
<Root>
<Result img="1.png" name="a">
<Programs>
[Code].....
What is wrong with linq query. Why does a 1 work but a 2 does not? I would also like xml structure preserved after filtering.
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Aug 29, 2011
I currently have a sql select statement that selects several things from 3 different tables at the moment, here is that code:
SELECT
group_concat(w.event) as events, group_concat(w.date) as dates,
group_concat(a.time) as times, group_concat(DISTINCT w.tmc) as tmcs,
group_concat(a.weather) as weathers, group_concat(a.surface_temperature) as
[code].....
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Apr 12, 2011
I am getting a strong naming violation for the dll file and really new to signing applications. How would I proceed in resolving this so that I can build the application I will be supporting? Also, as the FreeImage reference gets updated will I need to re-sign it?
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Oct 19, 2010
I have a datatable which has been dynamically generated from FoxPro tables using a UNION Select statement. e.g.SELECT * FROM x UNION SELECT * FROM y UNION SELECT * FROM Z ORDER By v_alue1This produces a datatable with about 100 rows, each containing many fields, one of which is c_olor. From this datatable, I would like to select the distinct colors and then output in a dropdown.I have a public class Color which just has one property which I can then use as the DataTextField and DataValueField for the dropdownlist
Public Class Color
Private _c_olor As String
Public Property c_olor() As String
[code].....
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Oct 4, 2011
I'm trying to make a simple tool to format SQL code so that I can use it in VB.When I put in the following:
USE master
CREATE DATABASE netGuest
GO
I get...
"USE master" & vbCrLf & _"
CREATE DATABASE netGuest" & vbCrLf & _"
GO" & vbCrLf & _"
So it almost works. Really the only thing not working is that the lines are ending with the " rather than starting with them.Here's my code:
Protected Sub btnConvert_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnConvert.Click
If txtVB.Text IsNot Nothing Then : txtVB.Text = "" : End If
Dim input() As String = txtSQL.Text.Split(vbCrLf)
[code]....
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Sep 22, 2009
I need to parse a log file from some information provided via an external command line application. The problem is that the command line app doesn't produce its on logs. So, I was wondering how I might be able to obtain the information form the command line. The only thing I could think of was to redirect the output to a TextBox, write it to a text file and then parse the data. Does anyone know of any other to do this?
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Jul 29, 2009
Here is my
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BHgardeners11.mdb;")
cn.Open()
Try
str = "UPDATE Products SET ProductCode = ?, ProductManufacturerCode = ?, ProductsTitle = ?,
[Code] .....
If there is only one item in the database, then this code works. If there is more than one record then the error is produced that it is trying to produce duplicate values. This is down to the Primary key in my database which is the only thing that cannot have duplicate values. However, when I remove the primary key it has the predictable problem that it goes crazy and does weird things.
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Nov 29, 2009
I'm currently moving over to W7 from Vista I've moved my source over (amazingly hassle free), but the Build option on my installer in my solution produces a different size (200K+) setup.exe file.
Initial question are:
1) Is there a log file I can compare betwen the two builds (V7 -v- Vista)
2) I thought that any compiler settings would 'follow the solution' Is this so?
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Jun 4, 2011
The idea is to scan a folder of images and then let the user navigate back and forth through the images using a couple of buttons.The problem is, I can only get it to return a single image, and not the whole lot. It's looks to me as though the images are getting assigned to the same index in the array. [code]
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Oct 3, 2010
What type of connector do i need to actually save the Map data like point of the images (x,y coordinate) into the database . and then retrieve it to show on the page in asp.net and how do i go about doing it.
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Feb 11, 2009
The app i am working on is for creating theme for the iPod touch... It has to deal with LOTS of images (100's potentially) There will be the set of default images, and then the user created replacement images. I started loading all the defaults into a resx file... thinking then I could just pull them out. now that I started setting the default, this sucks! lol the app will do this, on load it will set all the images (variables) to the resx images then when a theme is loaded, it will replace the default with the user image (if the user img exists) otherwise, the default stays. Then the "screen" is drawn to show the user. so, here is just the images to build the wallpaper, dock, and status bar...
[Code]...
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Jul 23, 2009
I've got a painfully simple table that is giving me a "Specified cast is not valid" error when I try to delete one or more rows. The table has two columns, an "id" as the primary key (INT), and a "name" (VARCHAR(20)), which maps to a String in the LINQ to SQL dbml file. Both of these statements produce the error:
[Code]...
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Dec 23, 2011
I am getting "The directory name is invalid" while calling process.start function.My code is
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim p As New ProcessStartInfo
p.UseShellExecute = False
[code]....
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