Use A Search Procedure For Text Changed Event To Look At Structure In Module?
Feb 2, 2009How I would use a search procedure for a text changed event to look at a structure in module.
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VS 2010 - Rich Text Box - Getting User Text In The Text Changed Event
Jan 20, 2011I'm Making a Simple syntax highlighter and I'm Doing the highlighting in the text Changed event of a RTB and for obvious reasons I can't re highlight the whole document each time someone presses a key so i highlight one line each time the text changes. But this creates a Problem. If someone pastes code into the RichTextBox It only highlights the last Line. So is there a way to get if the user typed the text in with his keyboard or pasted it from the clipboard in the text Changed event?
View 6 RepliesText File To An Array Of A Structure And Search?
May 10, 2009currently working through a project using VB 2008 windows form application and having a little trouble with the code. I need to read data from a text file into an array of a structure, displayed in a list box and have a number of searches conducted on the data and these results displayed on the form. The test data is of rainfall across a number of areas and is in the format:
Limiting A Text Changed Event?
Jun 11, 2009I have an number of text boxes and comboboxes on different forms. I have textchanged events which trigger a msgbox if the user enters invalid data(i.e. the number they enter is to big or to small). Is their a simple way to make the program not call the textchanged event when the form is loaded and the boxes get their initial value? Second is their a way to make the textchanged only be triggered when the user enters data not when the program clears the boxes?
View 3 RepliesTrigger A Text Changed Event?
Jan 27, 2009how to trigger a textchanged event. I want to enter data in one text box and have the rest of the data show up after i fill it in. For example I enter someones name and then 3 other text boxes fill in with his height weight and ect after i entered his name.
View 3 RepliesCall A Button_click Event On Text Changed?
Jul 4, 2011In my project, I am trying to make a button_click event occur when the text of one of my labels is changed.I am using the following code,
Code:
Private Sub Total_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Total.TextChanged
[code].....
How To Create ' Temporary' Graphics With Text Changed Event
Feb 27, 2011I'm in an upper level industrial engineering class in which we're learning some entry level VB programming. We're working on building a program to solve the travelling salesmen problem (finding the shortest path through a collection of cities while visiting each only once) and I'm trying to add some 'fancy' to it so I can learn some more skills. The basic program is designed to load a bitmap file of a map into a picture box and a text file with the xy coordinates of any city positions. From there, the user can plot the cities with red squares, draw a random tour through the cities, or tour the cities by always visiting the nearest neighbor not yet visited. The modification I'm working on is a method of pointing out a specific city with a black square by entering the city's number (determined from the coordinate file) into a text box.
Private Sub TxtFindCity_textchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TxtFindCity.TextChanged
Dim ObjFindCity As Graphics = picShowMap.CreateGraphics
Dim City As Integer
[Code]...
So far, the program works, but I want the black squares (but none of the other graphics) that are created to go away once the text box is cleared. As of now they just hang around on the screen until I refresh the entire image with a 'clear map' sub. Any suggestions on how to accomplish this?
Create An Audit Of A Folder Structure, And Tell Is/what Has Changed?
Aug 16, 2010I've got an application that takes the files in a folder structure and publishes them to another location. Currently it goes through every folder/file and compares the dates in the source and destination. If the file doesn't exist in the destination, or is older, then it copies it across from the source. It's obviously foil proof, but not as fast as it could be.
Ideally, I'd like to create an audit (or audits) saying what the current state of play is in the destination and compare the source folders/files against that instead.
This of course assumes the destination isn't messed around with manually, but I think that's a fair limitation.
So has anyone got any suggestions for how this audit could work? ie: How I could store data/values, such that on the next run when I look down the source folder/files I could compare it to the audit and see 99% of the files are unchanged, so only send across the X new ones etc?
ps: I don't suppose there's a valid (in Windows) that can tell you the date any file in a folder was created/amended? ie: So rather than checking down 200 files to see their individual dates/times, if I could get a single folder level value saying the date of last update/create, if it hasn't changed since the last run, there's no work to do! There is GetLastWriteTime but this doesn't seem to get updated if you amend/update a file, rather than creating a new one!
.net - Where To Keep A Structure: Class, Module Or None
Apr 18, 2011This is purely a coding practice question concerning VB.NET structures. Where do you keep one?As an example, I've created a structure for the simple purpose of keeping information organized, I'd like this structure to be stand-alone, not belonging to any class so I wouldn't have to access it through SomeClass.MyStructure but rather simply MyStructure. So, do I keep it in a separate class and import it into my namespace? Do I keep it in a module (Static class, essentially)? Do I just make a separate VB.NET code file and place is there (I would like it to live in a separate file). Just to clarify, I need this structure to be accesses by the whole application, not just a single class.
View 1 Replies[2008] Getting Structure Outside Module?
Feb 27, 2009I am using Visual Basic .NET 2008. I have a module in my project and couple of windows forms. Now in my module I wrote -
Structure Transport
Dim Veh as Vehicle ' pointing to enum below
Dim GoAhead as boolean
End Structure
[code]....
What I want is that another form should be able to call my sub Select (declared as public) and pass enum data declared in Transport structure. VB allows me to do that if my sub is private but not if my sub is public. To overcome this issue one solution is to declare the enum in the form class itself. But for this I will have to do it in each form.
Wpf - RibbonComboBox How To Do "on Text Changed Event"
Nov 22, 2009I want to get the value that is typed in the ribbon combobox to filter my listview but it doesn't have a "on text changed event" and if i use the KeyUp/Down event or reviewTextIntput it resets the value of the comboboxAnd if i try it like below the combobox.text gets the right value but the selection begins in the beginning of the combobox.
private _name as String
Private Sub cboName_KeyUp(ByVal sender As
[code].....
Asp.net - Calling A Shared Procedure From A Module?
Aug 6, 2011I would love to use the following procedure to set the Title, keywords etc. of my pages, in a module.
Public Shared Sub SetTitle(ByVal Heading As String, ByVal Keywords As String())
Dim myMaster As Masterpage = DirectCast(Me.Master, Masterpage)
If Request.QueryString("lng") = "es" Then
[Code]....
The problem is that i get two errors.
At Me.Master i get the 'Me' is valid only within an instance method. error and at
If Request... i get the error
Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.
So how do i fix these? I would like to have that procedure in a common place and not in every page.
Structure Statement Using Module Level Array To Read File
Nov 27, 2008Define a structure named product, The structure should contain 2 variables one as a string and the other as a decimal. The decimal is used to store the price and the string is used to store the item number.
Declare a module level array that contains 5 product structure variables
Code the main forms load event procedure so that it reads the item number and prices from the itemInfo.txt file The procedure should store the item numbers and prices in the module level array. It also should add the item numbers to the list box.
When the user selects an item in the list box the items price should appear in the xPriceLabel. code the appropriate procedure.
The code I have is as follows
' Project name: Glovers Project
' Project purpose: The project displays the price of an item.
' Created/revised: <your name> on <current date>
[Code].....
Seems the problem I am having is this line is returning a value less than 0.
itemprice = (itemnumber.Substring(productIndex, newLineIndex - productIndex))
Stored Procedure Syntax Structure?
Apr 23, 2009I have a dataset with a bunch of tables in it. I also have a database with the same tables, but not necessarily the same number of rows. Any table in the dataset will have the same rows as there are in the equivalent table in the database, but there may be a few extra in the dataset. What I'm looking for is a fast way to determine whether there are extra rows, and if so, they need to be inserted into the DB.
View 2 RepliesThreaded Sub-Procedure Within A Module Not Obtaining Correct Data From Other Form?
Feb 3, 2012I have an ArrayList that is set to Friend. Once I click my button "abc" is added to the ArrayList and then the form MsgBoxes out the Count of 1 (Correct).When I use Threadpool to count the number of objects within the ArrayList it always returns 0.
Example:
Imports System.Threading
Public Class Form1
Friend Alphabet As New ArrayList
[code]....
I am obviously getting some sort of cross-thread issue here but have no idea how to correct this. I usually just setup single threads so this is my first time playing with ThreadPool & already lost at step 1!
Asp.net - Stored Procedure Syntax Structure - Catch The Output @messase In Label
Jan 8, 2012This is my stored procedure
[Code]...
Add An Event For When A Value Is Changed?
Aug 6, 2009Is there a way I can add an event for when a value is changed, because, I need to add an OnDisconnected() event that detects when the mobjlistener.Connected value has changed...would I have to do a timer, is there a way I can do an event for getting disonnected?
mobjClient = New TcpClient("IP", 5000)
I would rather not add a timer, I would rather have an event that fires when mobjlistener.Connected changes, but if I can't I will go ahead and use the timer instead.The problem I have that I need to detect when this changes is because sometimes I get disconnected for an unknown reason using the TCP Multi-User Chat, it has handlers for disconnected, but whatever is causing the disconnect, it is just not detecting it, so if I could make it so that it will trigger when this is changed, then I can stop the problem I have once and for all.
Method Of Search In An Array Structure?
Jan 6, 2010I have this as the structure
Public Structure TagInfo
Dim TagName as String
Dim hpt as Integer
[code]....
have the structures are populated and when the form opens up, I make a copy of the structure.on my form i have a textbox... that would have information matching the TagName(x).TagValue I am trying to figure out how i could find that value in my textbox quicker than doing a loop through the tagname structure.
VB2005 Find/Search In A ListOf Structure?
Oct 17, 2011Im currently working in VB2005 so it seems like this was harder to do in that release.
I have a class for a point
Public Class cPoint
Public Speed As Integer
Public Alt As Integer
[Code].....
But that doesn't work in VB2005 much less work with more than 1 filter. I just cant seem to find a good example that works in VB2005. I could iterate through the list but its kind of big and not very efficient.
.net - FileSystemWatcher Changed Event Not Being Raised?
Apr 29, 2009I'm working on a Windows Service that watches a few folders for changes, creations, and deletions. It all works well with the exception of one watcher that watches a single file (XML File with Configuration Settings) for minor changes.
I tried taking the Windows Service code and putting it into a simple windows application with start/stop buttons for the filesystem watchers and stepped through it. It never detects the file change of the XML config file. The changes are indeed occurring and the "Date Modified" of the file is updating.
XmlEventReferences = New System.IO.FileSystemWatcher()
XmlEventReferences.Path = "C:XmlReferences"
XmlEventReferences.Filter = "*.xml"
[Code].....
C# - Window Title Changed Event?
Jan 6, 2012If a window, for e.g. Firefox, changes its title, from Firefox to Stack Overflow - Firefox then I want my app to record that Firefox changed its title.Is this possible without the use of a hook and loop (EnumWindows)? If can be only done with a hook, which type of hook?
View 3 RepliesCapture Event When Value In Datagridview Is Changed?
Apr 2, 2010I've been searching all over and I'm either not searching for the right words or it just doesn't exist. I've got a datagridview (dgv) on a form with some textboxes that are databound to different fields in the dgv's datasource. I want to capture an event if someone changes a value through one of the databound controls so I can mark the row as modified. I've been going through the dgv events trying to capture something, but I can't find anything that fires when a value is changed. The dgv is read only, so the values can only be changed through the databount textboxes.
How to I know if someone changes a value in the dgv? Is there a setting in the dgv that will tell me if a row is modified?
Get DataRow That Was Changed In DataBindingComplete Event?
Mar 13, 2012I have a DataGridView that uses a BindingSource to display my underlying DataTable. When the user makes a change to a row in the DataGridView the BindingSource's DataBindingComplete event fires. I'd like to get the DataTable's DataRow that caused this event. How do I do this?
The code below does not return the correct DataRow. For example, when I Fill my DataTable then change row 200 the Current property still equals 0, which always returns the first row in my DataTable.
Private Sub dgvCurrent_DataBindingComplete(ByVal sender As Object, ByVal e As DataGridViewBindingCompleteEventArgs) Handles dgvCurrent.DataBindingComplete
If e.ListChangedType = System.ComponentModel.ListChangedType.ItemChanged
[Code]....
Grid Selection Changed Event
Jul 15, 2009i have 4-5 forms and contains grid and some coding is done on selectionchanged event of grid. eveything is working fine but one of the form has this problem.as soon as i call the form form1.show and it fires the selectionchanged of grid before even it fire form load event. i'm not sure why? i try to debugged it step by step, as soon as form.show command is done the control goes to selectionchage event of grid and at the same time it is working fine on rest of the forms.
View 1 RepliesScreen Workingarea Changed Event?
Jan 25, 2010i have my form set to 50% of the working area of the Form's screen. I need to know when the screen's workingarea change and resize my form accordingly. Example: the user drags his windows taskbar and hence the workingarea reduces, and as such i wish to resize my form to 50% of the workingarea
View 3 RepliesSelection Changed Event In DataGridComboBoxColumn?
Mar 31, 2012I have a Data grid with DatagridComboBoxColumn , and i want to Fire Event SelectionChanged when user Select any thing From the ComboBox , Do Some operations
View 1 RepliesVariable/property Changed Event In .net?
Jan 3, 2010How can I make an event that is raised when a variable or property is changed (or can I just put the code I would put in an event in the Set section of a property?
View 5 RepliesVS 2008 Combobox Value Changed Event?
Sep 27, 2010I am having a problem catching the event that happens when a user selects a value from a combobox. What I was using was ValueMemberChanged, but because I am populating the combobox in code during runtime using SQL and a dataadapter and dataset, this also executes the ValueMemberChanged event, so that makes it difficult for me to know when the user actually changed the value.
View 3 RepliesCombo Box Selected Index Changed Event?
Jul 1, 2009Here is my code for programming a program that reads from a file called RESORT.TXT
Containing the text:
Barb Allen
604 777 1234
[code].....
Make An Event That Will Fire When Value From A Label Is Changed?
Oct 31, 2011Does anyone know how to make an event that will fire when the value from a label is changed? (In VB.NET)
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