if I want to submit a large amount of text to my asp web page, do I need to worry about the text itself such as containing "&a=" that would mean another variable is being assigned for submitting data? Any way of not worrying about this? Or do I need to replace the & symbol everywhere in the test first if used?
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How to send large amounts of text with TCP.[code]...
View 6 RepliesWhat I want to do is display large amounts of text and a few pictures, ideally with hyperlinks between the pages. A lot like wikipedia really, lots of similarly arranged pages, text in categories with in-line hyperlinks and the occasional picture to illustrate a point.But not online, integrated as part of a larger app.
How would it be best to go about doing that? The display method is sortof dictated by the storage method. My thoughts were:
Lots and lots of labels stored in an Access database
Straight HTML as if it were a webpage embedded in an iFrame or something
Labels populated from XML files?
Program the whole lot in Flash or something else (A language I can't speak)
This is only a mockup for demonstration purposes so the priority is user-friendlyness and ease of programming rather than storage concerns or good programming form.
I need to constantly display large amounts of colored text in WPF or Silverlight, and I need the user to percieve it as showing up instantly.
Currently I'm doing this using a canvas and textblocks, one textblock per 80-character line, with multiple runs to a textblock to handle the different colors. There can often be 20+ runs to a line.
In a 45x80 grid of text, this gets a framerate of about 12 in Silverlight, which is sluggish. Oddly enough, it's even slower in WPF... I can only speculate that this has something to do with my dev machine's lousy video card. Maybe it's trying to hardware accelerate and actually slowing down because of it?
Couldn't think of a better title.(Background on the problem/me)Okay, so, first question/post here, so hi. Now that that's done with, the information pertinent to my problem. I'm fairly new to VB (and programming as well, aside from screwing around with C++ and learning assembler(well, attempting is the better word) god knows how many years ago), and have only seriously been programming for about under half a year, and my skill level is about at that stage. Only been using VB.Net, nothing older. Depending on the time of day and if I'm home or at school, I fluxuate between VB express and Vis Studio 08. Umm, this program I'm having trouble with was on a test that I took yesterday (took the problem home with me cause I really wanted to figure out what was wrong with it).
The stipulations of the test were:
No For->Each Loops
No using Built-In Sorting or Searching Functions
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Is it possible to create a kinda virtual storage in a vb application so that data created during run time are stored right in the applicaion instead of its environment?
View 11 RepliesI recently wrote a program that collects information from the network can displays it in a DGV for the user to see. I tested this on networks where I would end up with several thousand items brought back and all worked fine, very little memory increase and once the search had finished the memory usage went back to pretty much what it was before the search, so I assume I have no major memory leaks that I should be concerned about (I'm careful to always dispose of things and clear large variables where possible).
However, a new company has now started using my application and they have several hundred thousand items that my program will find. They reported that they leave the program running its search for a few hours and most of the time it crashes with an Out Of Memory exception. Now I did have my app do some caching of certain information to avoid querying the network more than was necessary so I thought well maybe this is what is causing it but I added an option to turn that off and they say it still happens. So the only thing I can see it being is simply the amount of data that the program is finding and having to store in memory.once my application has gathered information about the items it stores them in a List(Of MyItemClass) and then when the search is complete the items are added to the DGV. So I'm thinking maybe its just the size of this List(Of MyItemClass) that is simply getting too large. Bear in mind that each instance of MyItemClass in this List can have quite a lot of information in it as it has several properties that are List(Of String) that may contain a few thousand strings in some scenarios.How do you deal with such large amounts of data without running out of memory?I'm assuming the only option I have got is to 'page' some of the data to a temporary file on disk once I get over a certain number of items in the List(Of MyItemClass)?
I created a program that watches about 10 folders for different excel files. Using the filesystemwatcher with filters in place and correct error handling, it still misses some files once in a while (that's ok I guess).Anyways, I'm writing this because I added another form that has a filesystem watcher, when I tried to load the form I got a stack overflow error - an error that isn't debugged (a greenish line that you can only stop debugging).Am I going about this a wrong way? Is filesystemwatcher unreliable with large amounts of processing?
View 1 RepliesI'm experimenting with a program 'proj' which has some buttons on it as well as a textbox and a submit button. I want to automate all mousemovements/clicks and entering/submitting text. First I do some mousemovements and clicks in the program (proj) which works fine Then I need to fill in some text in the textbox.. therefor I tried using Quote:
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I have three text boxes for inputting amounts of money. One is for a total check amount, the other two are separate amounts that should add up to the total check amount. In each of the individual text boxes validating events, I have the following
Private Sub txtAmount1_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles txtAmount1.Validating
Try
[code].....
the project here is to take the three amounts from three text boxes entered by the user and return a string in a label telling the user if the triangle is either a right triangle, equilateral triangle, or neither after clicking a button. The code I have must use a new Class named Triangle. No matter what is entered in the text boxes, the label always returns "You created a right triangle!"
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The following code suppose to:
1. Read line-by-line a txt file with more than 500,000 lines, (each line 521 characters long)
2. extract an ID No from the line
3. query from a database for LCCIStatus
4. concatenate the value of LCCIStatus to the line
5. write the line to sample.txt
My problem is, this code works perfectly with the test file of 8000 lines but fail with the actual files which have over 500,000 lines. FYI, the test file contains data which I cut and paste from the actual file.
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I am trying to parse a very large text file for certain strings. The text file is part of a level-making software for an old game I play. The text file basically contains all the information the level designer software needs, but the only important bit is the 'texture information'. Basically what I'm trying to create is a little program that parses the text files and shows the user a list of every texture in that text file. The problem is, the strings denoting textures are not really easy to find, and I can't think of any sensible and fast way to get them...
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I am trying to put colored text into a list box. I use the following
Private Sub ListBox1_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles ListBox1.DrawItem
e.DrawBackground()
Dim myBrush As Brush = Brushes.Blue
Select Case e.Index
[Code] .....
This works fine and dandy as long as I use 8 pt font, but when I change the font to 20 I get the following: How can I get the list box to display colored text in a large font?
I am new to VB.Net, but I can tell you so far I love programming. That said, I'm building a tool basically to parse and display simple plain text log files. I'm hitting one stumbling block that really has me frustrated.
Other tools are able to load huge log files (500MB even) in a number of seconds. My tool, basically hangs loading a file that is maybe 5MB.
I'm using the MyString = StreamReader.ReadToEnd to read the contents into a string, and then RichTextBox1.Text = MyString to display the contents. That said, I really want to display the contents in a datagrid, but there has to be a better way of doing this?
How can I get my application to load larger files and display them faster? What am I doing wrong?
I need to load a large txt file that is in a fixed width format. There are over 45K lines, so speed is important.I need to load one of the fields into a dropdown box and have another field (label) display the text of another field in the related line.I could import the file to an access db if needed, but would rather not as i also want the txt file to update from a link on a regular bases. So having it in a DB would be more work to process that part.[code]
View 1 RepliesI'd like to know if there are other ways to write a submission program (submitting urls or pad xml to directories, submission sites, blogs) other than using the webBrowser. I've evaluated some shareware programs that submit urls or data very quickly, like 100s in a matter of mins. I couldn't write a program using a webBrowser because it might take 15 secs just to load the url. How are they writing the code??
View 1 RepliesI'm fairly new to VB.NET, and I'm working on a text editor with a tabbed interface. I deal with large text files. Should I have each tab / text document open up in a new thread or a process? I basically want the entire application to always run fast as the text editor is just one part of it. If I have several large text files open I don't want the rest of the application slowing down a bit.
View 2 RepliesI'm attempting to make an application which, upon entry of Amount to spend, Vendor, Employee, etc., a Purchase Order number is returned. My thought is that I'll simply let SQL pick the PO Number by setting it as an identity field. What I'm curious about, though, is how to directly query the database as opposed to using DataGridView or bound controls.Note that I have the following setup at this point.
DataSet --> BindingSource --> TableAdapterManager --> TableAdapter --> DataGridView
Where along that list would I inject my queries and how would I go about doing it?
I have ~ 1 page how to that is currently in a text file which I want to add to a richtext box.I am just wondering if there is some way I can just copy/paste it so it keeps its formatting etc.
View 1 RepliesI have a textbox and a submit button. The textbox is a date-entry field. Attached to it, I have a compare validator with the type set to "date". It does validate and show an error message.
Problem is, the user can still click on the submit button. I'd like to prevent that. If the user has entered something like 03/hello/2011, he or she should not be able to submit the form.
My below code has to copy a table from access in to temp dataset and then i need to select some datas from the dataset... its workign fine up to copying in to dataset..but in the second part the query is not submitted.. im a beginner
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Do I need to include Speech SDK with my program to get it to work for others?
View 2 RepliesI have a form in my MVC application that in theory should submit data back to my database using a Repository class. However, when I submit the form ([URL]), the URL changes to where the form should be submitting to, which is fine ([URL]), but once it has been submitted, it should send the user to a confirmation page. From what I can tell, I'm moving through all my pages correctly until it comes to the submit, where it displays the form again but under /Admin/NewUser/Submit and the data is not inserted into the database.
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I am writing a little application for our end users. I am trying to perform a search, which takes 1 input and clicking a button.I have tried a couple attempts but have failed. I'm not sure where to start, because debugging it doesn't help me see what's going on.
source code:
<form action="" onsubmit="return false;">
<p>Enter SKU or Mfg Part #: <input name="ProductID" id="ProductID" type="text" size="30" /> <input type="button" name="btnSubmit "value="Go" onclick="loadProductID();" /></p>
</form>
attempts:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Dim theElementCollection As HtmlElementCollection = Me.WebBrowser1.document.GetElementsByTagName("input")
'For Each curElement As HtmlElement In theElementCollection
[code]....
I am using visual basic 2008
I want to fill out forms, and I dont want to submit a POST url.
Instead, I need to access directly the DOM object, and somehow click or interact it programmatically.
should I use WebBrowser class ?
Can you show a sample code where text is entered into an input box, and the submit button is clicked ? ex) google.com
I am having trouble submitting a form with my program which is using the WebBrowser control.
WebBrowser.Document.All("follow").InvokeMember("click")
I tried this but it did not work. The result is that the WebBrowser displays "This program cannot display the webpage" error page. The problem I think, is that the page is using javascript when it comes to submitting the form.This is the code for the submit button:
<input type="button" onclick="submitIt()" value="Follow" name="follow"/>
And this is the javascript for the onclick="submitIt()"
function submitIt(){
document.formx.submit();
}
Is there any way to invoke that javascript submitIt() method through VB.net?
My program displays the current path that it scans.The problem is that sometimes the path is to large so the text gets cut off from the frm.I was thinking is it possible of cutting this log path.
C:Hellowindowspath
andom text extfoldervb.txt
to
C:Hellowidows..... extfoldervb.txt
I want to write a program to do Markov chain, but my states are quite large. First of all I calculate all the transition probabilities and revenues for all states(1381860 total states), and store in a multidimensional array. Public RevArr(0 To 9, 0 To 750, 0 To 282) As Long
After that the iteration of markov chain should use these as inputs to calculate the steady-state probabilities. But when I try to run the main code I got this error.Exception of type 'System.OutOfMemoryException' was thrown.
The following is the declaration of second array I add just another dimension for storing all the iterations, but I get this error. Dim stateprob(IT + 1, 0 To 9, 0 To 750, 0 To 282) As single
I am having a problem with submitting html from a textbox into a mysql table. I would believe this to be due to "special characters".
The code I am using is,
vb.net
Dim html = (sdata.Text.ToString)
Console.WriteLine(updateRecord("INSERT INTO course (tittle, length, begining, price, about, table) VALUES ('" & TextBox1.Text.ToString & "','" & TextBox2.Text.ToString & "','" & TextBox3.Text.ToString & "','" & TextBox4.Text.ToString & "','" & TextBox5.Text.ToString & "','" & html & "')"))
MsgBox("Success! You have Successfully created a new course, " & TextBox1.Text.ToString)
Me.Visible = False
The error I get is:
A first chance exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.dll
