Asp.net - Find What Process Called ProcessRequest In An .ashx Web Handler File?
Jan 31, 2012
I have a context.Request.QueryString item that is returning the wrong value in the ProcessRequest method of a .ashx handler.
The code is like so:
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim strOrderItems As String = Convert.ToString(context.Request.QueryString("OrderItems"))
End Sub
One of the values returned by "OrderItems" is wrong. How can I find out what process has called this method to fix the incorrect data?
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Feb 20, 2012
I am having trouble getting my .ASPX page to call my .ASHX file. Does anyone know what I might be leaving out? I have posted my entire .ASHX file below along with a little .aspx.
Imports System.Web
Imports System.Web.Services
Imports System.Data.SqlClient
[Code]....
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Mar 2, 2012
I have a vb.net web handler which builds two strings The strings basically looks like this:
["filename", "filepath"],["filename", filepath"],...,["filename", filepath"]
I need to return it in a way that the strings are sent with the name of the list, followed by the list
["listname": {["filename", "filepath"],["filename", filepath"],...,["filename", filepath"]}
I know that the web handler will automatically json encode the data, and that the way I have built my list should be reworked (the way we previously used this it was exactly what we needed).What might be a better way for me to house my data and return it to the browser in a way that is understood correctly?
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Aug 11, 2011
<asp:TemplateField
HeaderText="Image">
<ItemTemplate>
[CODE]...
When i run my form then it will show this.......and using vb.net. onversion from string "Handler.ashx?ID=" to type 'Double' is not valid.
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Nov 23, 2009
I have a problem with the handler on the contextmenu items which is not called. I opened my project and I clicked the rightmouse button on shockwave which the contextmenu popup and I can click the Test item, but obviously the handler testmenu_click() is not called.
I have already included the code:
Code:
Private Sub testmenu_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles testmenu.Click
MessageBox.Show("this is the test!")
End Sub
fix the handler testmenu_click which is not called??
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Oct 12, 2010
What is an "EASI" LinkButton? Why don't you just use an ASP.NET LinkButton? Try modifying your JavaScript method so that it returns "true" if you want the postback to occur...and "false" if you want it to stop. Then change the LinkButton to so that it "returns" the value that is returned by the JavaScript method... This should stop the postback from occurring (but then again I've nevers een an EASI LinkButton before.......)
<EASI:LinkButton ID="btnSearch" runat="server" CausesValidation="False" ClientScript="return confirmSearchOK();"UseSecurityLevel="True">Search</EASI:LinkButton> JavaScript modification suggestion:
function confirmSearchOK() { var planSel = document.getElementById("<%= ddlPlanID.ClientID %>").selectedIndex;
[Code] .....
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Nov 23, 2009
I have a problem with the handler on the contextmenu items which is not called. I opened my project and I clicked the rightmouse button on shockwave which the contextmenu popup and I can click the Test item, but obviously the handler testmenu_click() is not called.
Private Sub testmenu_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles testmenu.Click
MessageBox.Show("this is the test!")
[code].....
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Apr 18, 2011
The event handlers in my parent class are never called though the events are raised in the child class.
The Code:
Public Class childForm
Public Event checkboxchangedEvent(ByVal checkbox1 As Boolean, ByVal checkbox2 As Boolean)
Private Sub checkboxchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged, CheckBox2.CheckedChanged
[code]....
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Jan 11, 2012
This question is a following from another question I asked - Passing client data to server to create Excel or CSV File. I have a client page which builds a JSON object to send to the server, and I have server code which can parse that JSON object into an SQL command and end up with a dataset of required data.
I had originally been passing the JSON object to an .asmx web service which would return a JSON object containing my data. Now I want to go in a different direction and have the data returned as a .csv file.
I understand I can try to put my JSON object into a query string and call my .ashx page, but the JSON object could get large, so I'm trying to use the Request.Form of a POST.
My question, and lack of understanding, is in how to use jQuery to post to the .ashx page and have it return the .csv file to the client. If I navigate to the .ashx page directly (and modify the page to hard code the passed data), I get the .csv file returned to me no problem (i.e I get the prompt to open/save the file). If I make a POST to the .ashx file from jQuery and send my JSON object through, I get a response which contains the data in a string, rather than getting a .csv.
So, is there something I am missing, or am I just trying to achieve something that I can't or shouldn't be doing? I'd thought about passing my JSON object to a .asmx web service which would store the JSON object into a database and return an ID, and then use window.location to browse to the .ashx with the ID as a query string parameter to then generate the .csv file, but I thought there might be a way to avoid that middle step and do it with the POST.
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Sep 9, 2010
I am using a System.Diagnostics.Process to execute dirquota.exe. I catch an exception at .Start() which is "The system cannot find the file specified".
I am now doing:
foreach (var fi in new DirectoryInfo(@"C:WindowsSystem32").GetFiles())
{
Console.WriteLine(fi.Name);
}
This outputs pretty much every file in that directory apart from dirquota.exe.
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Sep 5, 2011
I have a process serves as an application updater.It checks it's local cache of files and compares this against list of files online.On it's first run there are no files in the local cache and it therefore downloads ~100 of these files.[code]This appears to work very well, since Explorer confirms that all files are extracted and available.However when I later run this process again, it cannot verify the existence of 6 of these files and therefore tries to download them despite the fact that they are clearly both present and up to date.The offending code is a simple File.Exists call which appears to deny the local existence of these files, and therefore tries to get them again.The system continues to work well, but over time the continual downloading of these 6 files is going to get kind of silly.
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Jan 12, 2010
Hows it going. Im in some need some help. Im trying to make a Program called process master, and one of it's features is When clicking an item in Listbox1, It will show on the side in Label 11 the path of that process.
System.IO.Directory.GetCurrentDirectory.listbox1.selecteditem = label11.text As you can very well see, im new with System.IO commands. Been wanting this as one of the main features!
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May 14, 2010
I'm using VB.net 2005, .net framework 2.0
I'm currently having a form that has a button starting a long process, with feedback into another windows textbox (call frmProcessLog).
I'm using a Background worker to laucnh the process, upgrade the status of the process and display feedback on the frmProcessLog textbox, and to know when the thread process ended up, (from the cancel button, from an error or normal termination).
the main thread process has some msgbox in it, asking questions to the operator (yes/no/cancel).
I've added the msgboxstyle.systemmodal to the msgbox call which works "ok" excpet if the operator decide to ignore the showing message box and click the cancel button on the frmProcessLog form, which is still clickable even though I supplied "systemModal" to the msgbox. this makes the msgbox hidden behind the frmProcesslog form and the process can still continue.
If I close my frmProcessLog form, I will see the previously msgbox behind it and If I end up click one of the button it will end up at an application error because the thread that called it is not existing anymore.
So I would like that the msgbox to be launched from the thread making it as if it was launched from my frmProcessLog window in a modal way.
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Sep 13, 2011
I have this on the form load;
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Visible = False
Me.ShowInTaskbar = False[code].....
Notice: I used "End", to terminate the process.What I want to do is when the last function is called (Delete_AutoReq_PracNo) it terminates the execution of the application.
Reason...I'll schedule this application to ran from MS SQL Server at night. So realistically, doing all the processes I would like it to stop...Is what am doing sufficient to stop the application from running or there is a more robust approach..
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Sep 24, 2010
I wrote the following lines of code within the even handler for a Process_Exited event. The really weird thing is that on the fifth line I get the error "Process must exit before requested informaiton can be determined. (When trying to access the Exit Time & Exit Code)
Private Sub AssociatedProcess_Exited(ByVal sender As Object, ByVal e As System.EventArgs) Handles
AssociatedProcess.Exited
Do Until AssociatedProcess.HasExited = True
[CODE]...
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May 2, 2011
I have a 32 bit application that shells a second application that can be 32 or 64-bit depending upon the computer it's running on. I only want one instance of the second application to run at a time, and I need the first application to prevent the second from being launched more than once. I want to be able to use GetProcessesByName to obtain the running processes. This seems to work fine. It's when I attempt to obtain the module data to find out what folder the second application was run from that things fall apart.
[Code]...
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Sep 21, 2007
When I load my solution and compile it after first starting the IDE, everything works as expected. After changing source and recompiling, I get the following compile error:
Error 11 Unable to copy file "objDebugCAMDRS.Library.dll" to "binCAMDRS.Library.dll". The process cannot access the file 'binCAMDRS.Library.dll' because it is being used by another process. CAMDRS.Library.
After closing Visual Studio 2005 and reopening the solution I can compile again successfully. This is an old solution that has been fine for a long time. I just recently changed computers and reinstalled everything.I am running win XP Pro sp2, Visual Studio 2005 sp1.
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Feb 1, 2012
My program writes to a .txt file (and this is the ONLY program that writes to it) in a thread (with lowest priority), but every now and then it gets an error "The process cannot access the file because another process has locked a portion of the file" when it executes this code: swLog.WriteLine(sPacket).Other program reads from the file, not write to it, why do I get this error, and how can I get around it, or what shall I do when I get this error since I can't write to the file ?
Class
clsFile
Private swLogOrig As StreamWriter
[code].....
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Mar 14, 2011
i am creating a httpRequest handler to download files my question is which better to use aspx or ashx ?
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Feb 24, 2009
I need to get a value from an API I made with ASHX and normally it is called from javascript but I need to call it right in ASP.NET I figured this shouldn't be a problem but I'm not sure the syntax.
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Aug 8, 2011
I'm looking to return a thumbnail image from a full size image stored as varbinary(max) in the database. I'll be using the thumbnails in a gallery-style view, so small size / efficient loading is crucial. I've been using an .ashx to return the full size image into a bound asp.net Image control, with the following code:
Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim conn As New SqlConnection()
[Code]....
I realize it's probably best to address the re-size at the upload, and stored the smaller image as a discrete column. But in the meantime, is it possible to program the handler to re-size the image on the fly? Ideally, I'd be able to pass an additional query string parameter, something like isResized from the image binding, allowing the same handler to be used for both full size and re-sized images.
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Sep 1, 2009
I am getting an error with this code.
The process cannot access the file 'C:UsersdavidDesktopTest Folderdavid 2.xml' because it is being used by another process.
how do i end the prosess after I create the file? Or am I creating it in the wrong manner.The underlined line is where the error ocures.
Public Sub AddDTData(ByVal value1 As String, ByVal value2 As String, ByVal filename As String)
dtUser.Rows.Add(value1, value2, Now.Date)
If My.Computer.FileSystem.FileExists(filename) Then
[code]....
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Feb 9, 2011
i was wondering if it possible to have a condition where lets say you have a column in the datatable called amount and a textbox acting as the filter called say maxamount to set it so the rowfilter when filtering the table will sum the number in the amount column until the number in maxamount is met, then stop and only return the rows where the total sum of the amount column is equal or less than the maxamount value, so i guess if the next row takes us over the maxamount it discards this row and returns the rows previous to it. is this possible using datagridview rowfilter or should i be loooking elsewhere to achieve this?
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Jun 5, 2011
I have an sql table called Stock with two fields called StockID and StockCode. I want the user to select the stockcode from a combo which in turn populates the stockid for that item into a lable on my form. I have already populated the stockcode into the combo but dont know how to compelte the rest.
Imports System.Data.SqlClient
Public Class cbo2
Private Sub cbo2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
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Aug 11, 2009
I have a form called FrmPracDetails which is built up with a List view called LvwColProc. Therefore when you click a field on the LvwColProc it takes you to another form called FrmColProcessing, here you can make changes to certain fields which are also present on FrmPracDetails. What I want to do is when you make changes on FrmColProcesing and Click the Save Button (which calls the Save function)the changes appear instantly on FrmPracDetails. Please note, FrmColProcessing will always be open next to FrmPracDetails. I have tried to put this code in the Save function present in FrmCol Processing as shown below, but it doesnt Refresh FrmPracDetails form. [code]
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Feb 5, 2011
how can i make a list,so that every time i open a program on my pc, an item is added on a listbox with the name of the program and when i double click on the item, i get it's folder opened.For example, if i open Mozila, an item with it's text : Mozila Firefox , is added to the listbox and when i double click it , the folder "C:Program FilesMozila Firefox" opens.
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Sep 25, 2009
I have to install whole bunch of self extracting files every now and then.. so, I was trying to automate the process...
Using process.start ("filename"), i was able to run the exe file. After that i send Alt U to Unzip the content.. Finally the Self Extractor sends message "xx files unzipped successfully..." or similar...
Now, how do I find out the the extraction is completed or the msgbox "xx files unzipped successfully..." popped up ? (I don't like to go thru the window title as there might be other thing going on...)
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Sep 5, 2009
Ok this is what I am doing, at a specific time (set by user) a program (chosen by user) will lauch. What I would like to do is after said amount of time kill that program that the user chose. I currently am using ".waitforexit()" but this disables my application.
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Aug 25, 2010
[code].....
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May 27, 2009
i have use VB.Net 2005 for creating a application for Open new windows explorer by code and close this windows explorer when I close my application. I Open windows Explorer by this code.
[Code]...
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