Using Boolean And Conditionals To Enable Button In Form
Mar 27, 2011
I have created a DEMO project to illustrated what I am referring to. I have a simple form, the button is set to Enabled False in the property inspector. When the user complete the form controls(fields) the button is Enabled. Everything seem to be working except the following:
When the user completes all the field, they must type twice in the MaskedTextBox for the button to be Enabled.
Even though there is no actual characters typed in the box because of it's restrictions, why do I need to type twice in the MaskedTextBox before the button is Enabled. Here is my code:
Public Class frmActivateBtn
Dim blnCheckName As Boolean, blnCheckPet As Boolean, blnCheckColor As Boolean, blnPhoneCheck As Boolean
Function turnTestButtonOn()
If blnCheckName = True And blnCheckPet = True And blnCheckColor = True And blnPhoneCheck = True
[Code] .....
I want to allow the user to enable or disable a textbox by clicking either a button (enable) or the reverse. (disable) if the user clicks the enable button the textbox should receive the focus.
I am trying to get a checkbox to activate and deactivate a button. While the button is deactivated it is dimmed or faded out. While Actvated the Text and button is fully visable. I did use ctype to activate the button from the checkbox.
CODE:
I found this code in the help section online to enable & disable an inactive button but do not know how to apply this to the button.
Enable or disables the automatic generation of inactive button images.
I have written a calculator program, and when the mouse clicks on the equals button, the button sets a boolean varaible to true, and then that variable can be used later.But I am wondering if the button control has it's own property that can indicate if it has been pressed?
I am running a program in windows forms visual basic and im trying to make multiple counters
Here is my code:
If txtAnswer.Text = nMathSum Then nCount = nCount + 1 lblCorrect.Text = nCount
[code]....
It suppose to count how many times i answered correctly and incorrectly The Counter for the Sum is working fine but the counter for the difference has a problem. When i input the correct answer it goes to the incorrect label.
From what I read it is a good convention to name a method that returns a boolean value with the prefix of "is" or "has". So in keeping with this convention I am trying to name a method in my program with this prefix but I am running Specifically I have a class called Day. It is a simple class with a few data members and one method that returns a boolean value of true or false. The name of the boolean variable is isSpecialDay. This class has a method called isSpecialDay which takes the date of the day, applies some criteria to the date and then sets the variable isSpecialDay to true or false. My problem is that the boolean variable is named isSpecialDay and so it the method. What should I do?
Public Class Day Private TheDate as String Private DayName as String
I have a vb.net based windows application, where when "GO" button is clicked a bunch of data is loaded into DB. So in my application as soon as "GO" button is clicked I want to just disable it and would like to enable it back when the uploading has completed.Now in my specific method for btnGo_Click() I have:
btnGo.Enabled = False as first line and btnGo.Enabled = True
I have a textbox and a button. Initially the button should be disabled, but when I change the value in the textbox I want to enable the button. I tried to write a trigger.
I am trying to do something, which I seems to be pretty simple, but no matter how I try, one thing or another doesn't seem to work. All I want to do is check if the current date is 14 days prior to an expiration date display how many days until the expiration date, but if the current date is past the expiration date, display an expiration notice.
If have tried a bunch of different ways, but none seem to work. Here is the latest variation that is not working:[code...]
i want to make a button who have two function like xyz.visible=true if i press this button again then Visible function make false and it autometicly renamed enable or disable
I have a list box with three items in it. This has been disabled and I want to enable a button if all three are checked, i was looking for a CheckedChange type event in the MSDN but could not find anything. How can I do something like this?
I'm reading a tutorial provided by someone at my university, and it claims that if you're debugging a VB.NET program, you can hover over a conditional (e.g. "Age > 13") and it will be evaluated. However, in VB 2010 Express, I am not seeing this functionality.
I believe the tutorial may have been written for a previous version of VB.NET, so I was wondering if anyone could tell me if this used to work and has been removed, or whether it has never existed?!
I am able to hover over a variable and see it's current value, and I can even "Watch" an expression (such as the conditional), but the tutorial claims[code]...
how to enable /disable the timer with a button and how enable /disable the timer with a checkbox? and the opposite how to enable /disable a button with a timer and how to enable /disable a checkbox with a timer
I have I text tab delimited file. in every line of that file at the same position in every row of the file I will have a bit that I would want to compare against 23 values (I will call them criteria). So if on every row the string I need matches one of tjhese values then that row will be written in File1.Txt if that value doesn`t match any of the criteria the whole row will be sent to File2.txt.
So far managed to get the original file written in the same format in a newly created file.
how to get the functionality I described working but am stuck with correct syntax.
Here is what I have so far:
Dim fs As New FileStream("C:Original.txt", FileMode.Open, FileAccess.Read) RichTextBox1.Text = "" Dim d As New StreamReader(fs)
[Code]....
Now I will need to declare every single row in RichTextBox1 as String then will have to get the bit I need will have to declare that as well(I will need from every row the string taht is between characters 96 and 104), also where do I keep the 23 criteraia values.
So I'm trying to import a function from a library I'm developing. I have "libraryD.dll" built for debugging and "library.dll" for release. Unfortunately, that means that I have to do this:
[Code]...
Now this would be fine but for ALL 40 functions this would make things very ugly to look at (and a tad bit unfriendly).I would like to do something more like this:
I have wriiten several windows app using Visual Studio 2008. All projects but one where the "Updates" button is disabled in the Publish tab. How can I enable it?
