Resetting Lots Of Labels?
Dec 12, 2009
I have a form with lots of labels on it, and a reset button to reset them to a default text. This reset sub has lots of lines of code to get this done, but I think it cen be done in just a few. I thought of something like:
For Each Label In Me.Controls
Text = "0"
Next
but this doesn't work, or anything else that I've tried. how to do get this done? And what if I want half of the labels set to 0 and the other half to 1? Would that be possible without setting them all seperately?
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Oct 21, 2008
I created a program that has serval labels on a form and a listview object. It has a button that when clicked reads a textfile and loads up values in the listview object. I then can click and drag text from the listview box to any label on the form and then the program removes the value from the listview box. Now, my question is how can I instruct VB to save these values in the text property of the labels so that the next time the program is loaded the labels will contain the values loaded during the last run time session?
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Jun 1, 2012
Well im currently developing an application for public use, I have a login screen in which the user enter's their registered credential's and the progressbar loads by increments of 3, now i placed 6 labels ontop of eachother and where the progressbar coding is i put:
If Progressbar.Value >= 1 Then
Label3.Show()
If Progressbar.Value >= 20 Then
Label3.Hide()
Label4.show()
And so on up until Label8 Show at 100%,
Now the problem is... As i have placed the labels ontop of eachother i need them hidden until they are called to show, i have tried adding a background worker to do this but have had no luck, all i see is the labels overlapping eachother when i run my application when i want them hidden untill Label3.Show() is called, and then to display them as they are called and hide them when another one is called to show...
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Feb 5, 2009
With VB, but I've got the few basics down, file naming, adding objects, naming objetcs, etc. But the reason I'm on here is because I cannot complete even the first step. Our form is 640 X 480, and we need to have two labels, both have vertical scrolls. I know how to add and resize the labels to meet my needs, but I do not know how to create scrolling labels. Or are they text boxes? On our bubble chart (Do you know what that means?) it says lblInformation. We are going to have clickable radio buttons which will update the lblInformation with info about each of the radio buttons.
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Apr 19, 2012
I'm trying to make a program that allows the user to click on labels which have a number in it and then that value has to be stored into a different label.
For example the user click on label1 and the values goes into label12, then it click on label3 and the values goes to label13 and so on.
At the moment I can only code on the respective label underneath (1->12,2->13...) but it has to be in any order (5->12,7->13...)
Here a picture and below my code:
'defining the click order....
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
[Code]...
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Nov 25, 2011
I've got the following set up:On a webapp, I've got an updatepanel Inside this update panel, I've got two regular panels and a set of two radio buttons, radio1 and radio2.On Panel1, I've got 4 drop down lists (lets call it DDL group1), being loaded by the CascadingDropDown Extender, meaning the first box triggers the second, and so on. All 4 DDLs have autopostback enabled, meaning that every time I select a value, a SelectedIndexChanged method is called which loads data from a database, based on the information selected on the last DDL.
On Panel2, I've got the same set up, except that I've only got 2 DDLs (let's call it DLL group 2), also linked as cascading dropdowns. These also have SelectedIndexChanged methods.
[Code]...
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Jan 27, 2010
I've created an application that runs queries against a SQL server (via Data Adaptors) in VB.NET 08 and returns the results to a DataGridView. It works great and returns my data, but when I switch to a different query that returns different columns, the DataGridView keeps the old columns from the previous query and adds the new columns from the new query to the end (far right) of the DataGridView. Is there a way to counter this? I don't want those previous unused columns showing up in my results. I tried setting the DataGridView DataSource and DataMember to Nothing and that didn't fix it.
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Jun 9, 2012
I have a DataGridView in which their is one column defined as a CheckBox. This checkbox is used to delete the record if the user chooses to do so. When they check the box, the user is prompted with a confirmation deletion message. My issue is that if the user chooses not to delete the record, I want to "Uncheck" the box and I can't get this to work. I've tried using the below code and it still won't work.
dgvBuild.Rows(e.RowIndex).Cells(6).Value = False
dgvBuild.Rows(e.RowIndex).Cells(6).Value = CheckState.Unchecked
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Dec 10, 2011
Like so many of your subscribers I am a (very) basic beginer.[code]Taken from Visual Basic.Net, for complete beginers. (page 67)
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Jun 10, 2010
Looking to make a simple VB form, that has three text boxs on it. One for a users username, and two for passwords. What I want to do is provide teachers with this form, they type in a students username, and if that username is found in AD it enables the two password boxs. Then the teacher can type a new password for that user in the boxes (the second one obviously being a validation) and then when they click save, it updates the AD account with the new password. Any ideas on how to do this? Does anyone have any code?
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Jun 8, 2012
I have a re sizable panel which i am adding over 100 buttons to. to do it i have a timer which detects any change in the height or width. then clears the panel and re draws all 100 buttons on. however i am encountering issues with flashing (where the buttons are gone for a split second before being repainted) and also speed issues. it seems to be slowing down the users ability to re size the window.
i was thinking by adding the buttons through its own thread it might combat the main (speed) issue.
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Oct 31, 2010
The data is loaded from a xml file (which the code parse the xml, and create datagridview cell dynamically). and the user is allowed to change the data, when the program exists, it will write back to the xml file to save the change.It works fine when there are not many rows. when it has too many rows, say, 10K rows, the program loads slowly. I searched, found some suggestions, but it seems they do not work very well.1) when load the data, not create the rows directly. instead, create a datatable, then add the table to the datagridview's data source. it still takes time for the dgv to show the data.
2) then, I guess maybe I should paging the dgv. then it comes 2 questions:2.a) I only have a manually created table, how can I get a dataadapter/dataset from it? do I have to put data in a database table first (i.e. sql express), then load it to data adapter? is it possible to manually create a data adapter/dataset?2.b) if I paging the dgv, does it mean I still need manually update the dataset/datatable to keep the possible change when the user navigate through the dgv? or, I can simply use an update method?
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Feb 13, 2012
I have a lots of strings.So I will need to do some statistics.The problem is some strings are the same.So,I will need to know the numbers of the same strings.How to do this.Shold I hold the strings in a Array of a List?
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Jul 24, 2011
I want to show lots of text in my form but i'm not sure how to do this efficiently.
The text is just instructions to the games Pong and Match so it isn't very long, but long enough to not be practical to type into a textbox's text control. The instructions will have paragraphs, but no other formatting.
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Aug 17, 2010
If I have a double variable that goes through a loop and gets numbers added to it, is it just as simple as saying variablename = 0 to reset it?
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Sep 9, 2009
Usually, when I reset the IIS of a remote server, I have to use "Remote Desktop Connection", log in, and go to DOS , and type "iisreset". Now I'm wondering is it possible to do the exact same thing without using "Remote Desktop Connection" application? Could this be done programmitically and remotely (because the program will not be running on the actual server)? Of course, I'll be providing the username and password within the program.
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Dec 15, 2011
I have been coding a Reset Login Details form, the user needs to enter the new Username, the new Password and the Current Password.Here is my code below - something in the form is not working as i am getting an error when i fill in the form about the INSERT INTO statement.
Imports System.Data.OleDb
Public Class frmChangeLoginDetails
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
[code].....
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Mar 10, 2011
I'm storing data using my.settings (e.g., to use as a incremental counter). When I run my application it increments the value but, I do not know where to reset this value despite looking at all of the project files for them.
Is there a file that contains this data?
Note: at times during testing I don't want to reset the value(s) back to zero.
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May 24, 2012
I'm creating a program which navigates through a tree-like structure. There are lots of items with a single 'parent' and many 'children'.
Using a SQL database, I've got all of the items information stored, but I'm struggling with how to hold the IDs for each Items children.
For example:
A: no parents, Children: B, C, D
B: Parent: A, Children E, F, G, H
F: Parent: B, Children: J, K, L, M
Where each item will have hundreds of children, for which I don't really want a column for each child...
Is there a simple (or more complicated) way to hold and retrieve a large number of integers within one column... i.e. as some kind of sub-database, or an array with the column??
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May 7, 2009
I'm trying to do a simple loop while reading a file. I have tried to make the streamreader as a public value, so this way it would be passed between the subs, or rather changed by each sub working with it. The problems comes into play, when I double click the read button, since the value of sr is assigned to -1 after the first full read, so the program doesn't read the data from begging but assumes the end of the file and stops. Is there any way to reassign or reset the value of sr so that the file will be read again from the beginning? This is the example code I got.
Public Class formcollegetut
Public sr As IO.StreamReader = IO.File.OpenText("colleges.txt")
Private Sub btnDisplay_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplay.Click
Dim test As String = ""
Do While sr.Peek <> -1
ReadData(test)
[Code] .....
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Jan 28, 2010
I've created an application that runs queries against a SQL server (via Data Adaptors) in VB.NET 08 and returns the results to a DataGridView. It works great and returns my data, but when I switch to a different query that returns different columns, the DataGridView keeps the old columns from the previous query and adds the new columns from the new query to the end (far right) of the DataGridView. Is there a way to counter this? I don't want those previous unused columns showing up in my results.
I tried setting the DataGridView DataSource and DataMember to Nothing and that didn't fix it.
Here is my code...in case that helps
Connection.ConnectionString = "Provider=SQLOLEDB;Data Source=;Initial Catalog=;Integrated Security=SSPI;"
Connection.Open()
[Code]....
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Jul 12, 2010
I'm considering making an application that will perform various tests against servers on a local network - for example pinging them, checking hard drive space, checking the state of services, whether or not databases are available, etc etc. Very similar to Hostmonitor if anyone has ever used that - but my app will be free
These tests would have to be performed at specified intervals, but the problem is that there could be literally hundreds of tests and I'm not sure how well my app would cope with hundreds of timers running... especially if they are all configured to run every minute or two (they all need to run independently of each other).
Really I'm just wondering how you guys would design such a system.The best way I can think of is to have a separate timer associated with every test and then when a test's timer has elapsed use the ThreadPool to do the work that the test will perform. That way if loads of them happen to run at the same time then the ThreadPool will queue them rather than trying to run say 200 at once. I also think I would need to have some kind of staging for when the app first starts, so that every single test is not going to have the exact same time to run (well, every test that has the same interval configured), but that shouldn't be too much of an issue.I guess it would be a good idea to try and use some sort of grouping so that more than one test can use the same timer - like if 20 tests were set to run with a 5 minute interval then I could use one timer and run all of the tests when that one timer fires.
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Mar 14, 2009
I am going to work with 300 000+ words... what is the best thing nowadays to put so much text so it can be searched fast (runtime)? I would use a jagged array but maybe there is something new since I read my last book with tips&tricks.
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Feb 15, 2008
I am in the process of writing a program that converts large number of records from one format to another. When doing some testing on it, to make sure I don't have any memory leaks, I am noticing a large number of undiposed cursor objects. I am not sure what to do with these. My program seems to run fine, however on some computers I am getting issues when the process is complete.
What happens is this. The program starts up, the user sets up the configuration options, it does it's processing, it creates a HTML report and launches IE (or whatever their default browser is) to display it. Then the program goes back to its Config display.
[Code]...
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Sep 28, 2011
I have a DataGrid, with several columns. One of them is DataGridViewComboBoxColumn. I have a lot of items in this column - more than 1000 - and I need all of them. So grouping is not an option - all items must be there, users must be able to select from all.The problem is, DataGridViewComboBoxColumn becomes painfully slow, when number of items is about 1000, and above. This issues is well known to Microsoft, it dates back to Visual Studio 2005: [URL]...The problem is still present in Visual Studio 2010. Any ideas how to solve this?
Is it possible to fill DataGridViewComboBoxColumn with data partially? I mean (that was functionality fully working in Access), when you click DataGridViewComboBoxColumn, some items are displayed (lets say, 100 items). When you scroll down to the latest item, others are loaded (another 100) and so on. I don't see any other option to make DataGridViewComboBoxColumn working faster? Problem is, how to implement this? Has anyone meet that problem before?
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Jul 20, 2011
how to go about changing the tooltip on 114 buttons. As you can see from the code below I need to change the tooltip information based on if there is data in an array of structures. I tried creating a string of the button name and passing it on but that did not work.
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Dim tooltipstring As String
[Code].....
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Sep 28, 2011
I have a DataGrid, with several columns. One of them is DataGridViewComboBoxColumn. I have a lot of items in this column - more than 1000 - and I need all of them. So grouping is not an option - all items must be there, users must be able to select from all. The problem is, DataGridViewComboBoxColumn becomes painfully slow, when number of items is about 1000, and above. This issues is well known to Microsoft, it dates back to Visual Studio 2005:Is it possible to fill DataGridViewComboBoxColumn with data partially? I mean (that was functionality fully working in Access), when you click DataGridViewComboBoxColumn, some items are displayed (lets say, 100 items). When you scroll down to the latest
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Feb 7, 2012
I have an App. I have a lots of datas to handle.So,I wonder if I can click a button and launch Excel and export my datas to Excel.So I can edit my datas in the Excel rather than in my App.
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Aug 31, 2011
I'm using the font dialog and have noticed that when I select/highlight portions of text and then cancel out of the dialog, the selected text is changed to the default settings (i.e., font type, style, size, color, etc).
Is there a way to preserve the original text settings?
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Jan 15, 2012
How would I go about copying all the files out of a directory and lots of subdirectories and moving only the files somewhere else?(say C:Testfile1.txt).
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