Asp.net Run Long Task Separately?
Dec 29, 2011
I am developing a web application in asp.net vb. My current situation is,I have a main site say [URL] and another site for generating reports depending on certain user ids say [URL].If I click a button on [URL] I have to switch on the generate report page on [URL] and return to[URL]. [URL] should generate report and set a flag in database of [URL].Currently I am redirecting to the page in xyz.com and add the long running task to queue as follows and redirect back to [URL].
If ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf LongTimeTask), New Object) Then
Response.Redirect(returnURL)
End If
But the problem is its not dependable. Means some times the queue is executing correctly but some times not. There are no errors in long time task. Just the queue is not executing.
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Jan 30, 2012
I am developing a solution in .Net utilising the VMWare Web Service API to create new isolated virtualised development environments. The front end will be web based. Requestors input details for the specific environment which will be persisted to SQL. So I need to write an engine of some sort to pull the data from SQL and work on the long running task of creating resource pools, switch port groups and cloning existing VM templates etc. As work progresses, events will be raised to write logs and update info back to SQL. This allows requestors to pull data back into a webpage to see how it's progressing or if it's completed.
The thing I am struggling with is how to engineer the engine which will exec the long running task of creating the environment. I cannot write a windows service (which I would like) as we work in a very secure environment and it's not possible (group policy etc). I could write a web service to execute the tasks, extending the httpRuntime executionTimeout to allow the task to complete. But I'm keen to hear what you guys think may be a better solution to use (based on .Net 3.5). The solution needs to be service oriented as we may be using it on other projects within our org. What about WWF, WCF? I have not used any of the newer technologies available since .Net 2.0 as we've only just been approved to move up from .Net 2.0.
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Sep 18, 2011
Is there a easer way of coding in stead of wrighting long long paragraphs like this in one line [code]All of this is on one line and i got lots of info to put down.."The game will begin on your 16th birthday with your mother waking you up. Today you are to go to the castle for the first time. Leave your bed and open your dresser for a Strength Seed. "
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Nov 24, 2010
is it guaranted that a task A started before TaskB will be completed before task B assuming the task do the same level of operatons?or in other words is there a chance that a task B will finish before tast A in the assumption that the task calls the same procedure?
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Apr 9, 2010
i have 3 div tags.Each having no. of textboxs and button.Each textbox having validation.For all button causesvalidation property is true.If i click "button1" in "div1" tag will cause validation of other textbox in other div tags.I dont want to do this ? How to avoid this?
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Jan 7, 2011
I need to populate single record at a time based on the search criteria. For example I have employee_name and the other personal information of an employee. I need to display a single record at a time based on the name entered by the user(The important point here is that I need to populate the name combo box here for the employee to select the name). I do not want the results to be displayed as a datagridview. I think I can do this if it is a datagrid view but I want display each field one below the other separately as a single record.
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Oct 6, 2011
The user can access the form in 2 different modes: Edit or Add.If they enter in Add mode, I want the dgv to be clear of any data. The dgv will have a set number of rows and they will enter data in text boxes and make selections from comboBoxes and save it to the db. If they enter is Edit mode, I want the dgv to populate with data, based on the value they select from the previous form.
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Dec 26, 2009
In Visual Studio 2008 I am using :Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long To stop input from occuring during a search-replace operation.
BlockInput(True) ' do not allow input during search and destroy
Dim cursorIcon As Cursor
cursorIcon = Cursor
Cursor.Current = Cursors.WaitCursor
Then setting it to false at the end of the operation. It did not work, so I thought maybe it was because I was calling it from a child window, so I created a function in the mainwindow, and ran it like this:
FrmMain.BlockFrmMainInput()With these functions is the Main window:
[Code]...
It did not solve the problem. I thought maybe it was because I was running under the debugger, so I tried compiling and running it debugger-free, but that did not do any better. I am still getting input when I double-click the mouse on either form.
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Sep 23, 2010
I decided to make a program to improve my game... In fps games a small movement can aim the camera all the way up or down, but much more movement is needed to spin around, so I want to build a program that simply multiplies the horizontal movement relative to the vertical movement .5x, 2x, ect.The problem is I do not know how to control the X and Y separate from each other.
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May 18, 2009
I wanted to know how I could declare a 2D array and assign it values separately?
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Dec 8, 2009
I have a program in which a user enters a sentence in English into a text box, then the sentence is translated into French and German based on words in an array of structures that gets its values from a text file. I have almost all of the program written, but I am a bit confused on how to get VB to get the English words that are entered into the text box separately so they can be translated individually and the value returned. I need to use a Sub Procedure to get the English Words and to Translate them. [Code]
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Apr 12, 2011
I have a Form with a TextBox, and a Save button that saves the text as a .rcp (txt) file. Now I want to add a button that browse for an image that accompany that txt file, and load it into a Picture Box. When I click to Save the txt file, I want it automatically to also save the loaded image With the txt file as the same name as the txt file, without needing to save the image and text separately.
I have this code for my save button:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
SaveFileDialog1.CreatePrompt = True
SaveFileDialog1.OverwritePrompt = True
' Set the file name to myText.txt, set the type filter
[Code] .....
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Apr 4, 2008
After going through some tutorials I set out to work on my own game. Right now it's simple, I have a ship that moves left, right and shoots. I also have Asteroids that fly at the ship.
The problem is that I have 3 asteroids in an array, and they all act the same... I would like random speeds and directions.
here is what I have in relevant code:[code....]
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Sep 27, 2009
I am trying to use a webbrowser control to display an excel workbook inside a windows form. I checked out articles on Microsoft support and this is the code that I am trying out -->
Dim oDocument As Object
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
[code]....
However, on run, the excel workbook opens up in an excel application instead of webbrowser control? I am using Visual Studio 2005 and IE 8?
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Apr 20, 2010
Private Sub cmdLancer1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdLancer1.Click
[code]...
So here's the deal... I click Lancer1 button and it displays a randomly generated value into the Textbox1.Then when I clicked Lancer2 it should make so the that first value of text is still present and add another value besides it...
[code]...
But when I press my Lancer2 button it gives a completely weird result and won't display both values seperately... Instead say lancer1 was value of 1 then when i click lancer2 i might get 2 - 5...
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Mar 31, 2011
I have a document that has bookmarked tables I create a new document using this document as a template I then loop through the tables and cut them off to the clipboard I would like to save each of these tables as a variable or value and paste them back in a user definied order This could be like Table1,Table7,Table1,Table2,Table4 Or any combination required I have looked at Clipboard.SetData and GetData but just cannot seem to store the tables I can do text, and images of pictures but cannot seem to get tables working?
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Apr 19, 2011
I have finally got my code all working, but there is just a quick query really. At the moment I have all the database stuff in each form seperatly. When I place it in a global module, it looks like the dataset is being duplicated I was wondering why this happens when I place it in a global module?
This the code I use and the code I would put in a global module
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[CODE]...
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Jun 23, 2009
im about to develop a small appliacation for a bet system, which needs 6 screens, each screen will be a touch screen for each client... the application will be running in one computer only just with 6 screens. my question is does anyone knows how to control each screen separately?. somethign that would allow me to output each forms in different screens would work fine.
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Jun 4, 2009
I hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
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Jul 23, 2009
I know how to do this:
PictureBox2.Image = Image.FromFile("C:Documents and Settings1A.jpg")
But s here way to do something like this:
If category = 1 then
[code]....
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Jul 27, 2011
I have a VB.NET app in which I'd like to use the Stopwatch class. The stopwatch will get reset every time it enters a particular method, which may be in less than a second, or not for hours. Is there a limit to how long you can let a stopwatch run before something bad happens? i.e. an error, or performance degradation?
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Apr 4, 2011
Be it in 32 or 64 bit system?
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May 8, 2009
How do i put a long description in my about box? I can't put it through Assembly Information because it cannot fit.
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Dec 23, 2011
This is probably a really simple thing. Basically, the user clicks a button and a potentially long running task happens. I'd like to do a few things like toggle the button's enabled state, show a spinner, etc. In VB.NET Winforms I'd just do Application.DoEvents() and the updates would happen and the code can continue. How can I do this in ASP.NET? (preferable serverside or minimal javascript)
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Feb 22, 2012
Edit So the solution I posted from Jenner at VBforums was, obviously, in VB, and I used an online converter to port it to C#. Something was lost in translations, and that's why it was 10 miles off. I'm guessing I am just misunderstanding what the algorithms at the Proj.Net discussion boards are for and that's why they weren't doing what I wanted them to.
[Code]...
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Apr 7, 2009
How i can calculate the distance between two coordinates[code]...
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Oct 7, 2010
I m new to this forum and also to VB.net programming. In an application Modbus protocol is used and I have generate LRC checksum for that. But I am stuck at conversion of a Long type data to Byte type. The long type data is for example : 4294967197. I tried all the following functions:
1.b = Byte.Parse(4294967197)
2.b = CByte(4294967197)
3.b = Convert.ToByte(4294967197)
[code].....
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Jul 29, 2009
Is there a way in which I can detect how long someone has been idle using a form (ie. Not clicking or entering any information into any fields/textboxes). Or would I have to implement a timer which counts this and reset it in the event handler for any entry?
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Jun 5, 2011
How to Covert a long name to short name??? for example: How to convert Visual Basic name into VB
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Sep 7, 2011
What is wrong with this code?When the code runs cmd.ExecuteReader I get an error saying "Incorrect syntax near the keyword 'AS'".I'm assuming I didn't breakup the sentence correctly.
Using cnn As New SqlClient.SqlConnection(clsDBConn.clsDBConnections.prpConnString)
cnn.Open()
Using cmd As New SqlClient.SqlCommand[code].....
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