VS 2008 - Getting An If Statement To Work - When Detects A Form Is Not Open
Jun 15, 2012
I'm currently having some trouble getting an If statement to work. I want the statement to do its thing when it detects a form is not open. this might sound a bit confusing this is what i mean:
If Form2.open = false Then
blah blah blah
blah blah blah
blah blah blah
[CODE]...
Basically i dont know if im able to have an IF statement occur for when a form is not open and i dont know how to word it.
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Oct 14, 2009
See
Public Class Form1
Dim sql As String
Dim conn As New OleDb.OleDbConnection
Dim da As New OleDb.OleDbDataAdapter
[CODE]...
The problem, The INSERT statement works fine in the form load but not in the button click event?
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Dec 31, 2009
I was thinking if I can create a code that creates 8 Labels, and each label will show someone's name. The name is not generated, it is randomized. But I Don't want to see 2 same names in 2 different labels. So what I came across is this:
First, I will make an array variable (0 to 8) as String, I will declare each person's name here, the 0 is not used. I Will call this "Names"Second, I'm going to make an array variable (0 to 8) as Boolean. Original State is False. I will call this "Type"Third, I will make another array variable (0 to 8) as Integer, this one is empty. I Will call this "Empty". Original value = false
The Point is that the application will randomize a number between 1 to 8, just say that the randomized number is "x". Then I will take Names(1) and fill it in Empty(x), and set the Type(x) to True, and keep looping. If the application finds the Type = False, then the application will randomize another "x". But after making the code, it seems that the numbers show up the same way everytime I run it. Even with the Randomize() statement.
[Code]...
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Aug 21, 2009
I have a form that works on my local Machine I created into. I have Office 2007 on this machine. I created the Form with the Excel 12 Reference. I move the Entire conetence of the Project folder to my work computer. Which has Office 2003. Do I need to recreate the form with the Excel 11 reference. I could not get the form to work on work computer. IT has a com error. I am acessing the EXE for the debug folder w/in the Bin Folder.
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Jun 22, 2010
This is going to be hard to explain but oh well.I have a form with a menu. When I hit option one, it opens another form (form2) inside that same form (mdiparent). When I hit X on form2, then try to open it again from the original form with a menu thru the menu, It says it cant access a disposed object. Here is the code: Form1:
[Code]...
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Sep 13, 2010
The following works:
[Code]...
However, the following doesn't work:
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Feb 28, 2010
I just can't get this If statement to work with htmlelementcollection. The problem is my msgbox pops up saying element found rather the element is there or not.[code]
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Apr 6, 2012
Dim connetionString As String
Dim cnn As OleDbConnection
connetionString = "Provider=SQLOLEDB; Data Source=****; Initial Catalog=****; User ID=***; Password='****';"
cnn = New OleDbConnection(connetionString)
Try
cnn.Open()
[Code]...
I have been working with this for awhile, and I can't get it to work, I have all the correct names where the connection string is, but I just can't get it to work. It is telling me the server does not exist, but I am using a hosted solution that I know is up.
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Oct 13, 2009
Dim
a As Date? = Nothing
Dim b As Date? = If(a Is Nothing, Nothing, GetValue(a))
I thought b would be Nothing, but it is not...is it a bug?
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Oct 26, 2009
I have a very simple form with a combo box named txtRoomType bound to ROOMCODESBINDINGSOURCE and a DGV bound using ROOMPRICINGBINDINGSOURCE.
Public Class frmShowRoomPricing
Private Sub frmShowRoomPricing_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
When I check the value of txtRoomCode when the form is loaded for a 2nd time it tells me it is blank, but there is a value in it. I think the fault is in the form_load, but I do not know why.
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Nov 14, 2009
I can't get the transparency key to work with the mdi child, I really need it to work as well, but I just can get it to work properly.
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Apr 11, 2012
I'm not quite sure why, but this program doesnt work as intended. It's kind of difficult to explain but if you tried it, it doesn't work properly.
Private Sub btnApply_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnApply.Click
'clears the changes box before going through if statements
Me.txtChange.Text = ""
[CODE]...
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May 12, 2011
I'm having a problem with the Math.Abs statement. When I try to use this statement to figure the absolute value of a number, as in:
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Jul 13, 2011
I am trying to type in the food Pizza, Taco or Crepe and get a picture of the food to come up along with a message box that gives the country.[code]
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Jan 1, 2010
I was convinced that If <expression> Then <statement [:statement]> Else [statements] in concrete form of If a = b Then SayHello() Else SayBye() End has sense. I read article on msdn on If-then-else, but I forgot why I was reading, so I concluded, that snippet above means this
If a = b Then HelloIsSaid : IsNotEnded Else ByeIsSaid : IsEnded But I have tested it now, and I see, that Else without statement is nothing more than decoration. It would be pretty good if it had function I described. Do you think its good request? Or do you know any circumstance where this Else has some function?
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Oct 26, 2010
I am currently working on an UI form using Visual Studio 2008 - Visual Basic .Net what i find weird is that when i tried to execute my form using the button click function, it doesnt execute until i restart the form.
Here's the situation is like:i have an openfiledialogue [Open button click] to search for a file.After DialogResult.OK is executed, the textfile chosen will then copied to another working directory. The file name will appear onto a textbox1 There will be more than 1 textfile chosen.After all the relevant files are chosen with the file names on textbox1, an OK button click will be clicked to write the file name into a *.bat file.BUT before the OK button is clicked, the user have to select from the radio button which category they want the file name to save into. EG: Country, Cities, Period.Once the radio button is selected and the OK button is clicked, a .bat file will be saved into the working directory.The next move will be the crucial button which is what this UI is created for. A data CRUNCH button is created to execute the .BAT file which was generated earlier on with the [OK buttonclick].The command used
[Code]...
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Oct 31, 2011
This is an mock up only ... but the principal applies to a larger project i am working on...
Basically if you do this:
vb
Dim tstform1 As New Form
Dim tstform2 As New Form
tstform1.Text = "1"
[Code]....
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Aug 19, 2009
I'm working through a programming project, which should be quite easy but im stuck right at the start (relatively new to VB). I have a textbox (named textbox1) and a checkbox next to it. I want the checkbox to be ticked (.checked) when ever the value in the textbox is between 1 and 100, the checkbox to not be ticked when theres nothing in there, and for it not to be ticked when the value is < 1 and > 100. Figured a case statement would be the easiest. (this piece of code is just a validation check, basically in the real thing the user would have to enter in a value between 1 and a given number, and need to tell the user if that value is valid).
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Select Case TextBox1.Text
Case Is = ""
[code]....
But what happens is, if I enter in the value 1 in the textbox, the checkbox becomes ticked, as it should. It tick with any values between 2 and 99 (any number not starting with 1) but the checkbox becomes ticked again when the value is 100. For any other range, say 1 to 70, the checkbox would be ticked if the value in the textbox is 1 to 7, or any number starting with 1 or 7, but not 8 or 9, or any number starting with 8 or 9.
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Sep 22, 2010
how I can get the LIKE statement to work if the user enters a number like 403* ? The sql works if I do not enter an *
strWildCardFound = InStr(TNSearchTextBox.Text,
"*")
TNSearchTextBox.Text = Replace(TNSearchTextBox.Text,
[Code].....
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Aug 26, 2010
How do I write the equivalent c# code below in vb.net? This 'About' form is launched by a ToolItemMenu. It is just informational and contains only an OK button
//Form contains company logo, copyright info and OK button.
public About formAbout;
using (formAbout = new About())
[code].....
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Jun 18, 2010
I am having issue with this function where wait_rtn statement does not work and errors out with error 0. it is suppose to search the screen and if it finds (true) get out of the loop...
[code]...
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Aug 4, 2010
I cant get this SQL statement to insert any of the values in the form to add to the database
sql
sql = "INSERT INTO prevresults (ExamDate, ExamTime, CorrectAnswers, PassPercentage) VALUES (date.now, time.now, rightanswers, percentage.text)"
[code]....
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May 8, 2009
I want my login screen to open over my editor! Example MS word how they have the tips screen over top and you press the close button if you don't want it there.
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Nov 20, 2009
Is there a way that I can open up a new form in Panel2 of my main form?
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Apr 29, 2010
i'm having troubles with a linq-to-sql statement and getting a left outer join to work. here is a sample of two tables i'm trying to join and my code that i've wrote.
Table1 Table2
f1 f2 f3 f4 fID f1 f2 f3 f4
val1 val2 val3 val4 1 val1 val2 val3 val4
[code]....
Instead I'm returning ALL values from table 1. I need to return all values from the left outer join where tbl2.fID is null.
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Jun 12, 2009
In a WPF application I have specified a class variable with an associated property that will automatically initialise the variable the first time is it accessed.
However after all the values that will be put into it have been added, and the window opens, the if statement that is supposed to check to see if the variable needs initialising appears to get bypassed, and the variable is re-initialised, thus deleting the information that was in there.
Private Shared _types As Specialized.HybridDictionary
Private Const _typesLocker As String = "blah"
Public Shared ReadOnly Property types() As Specialized.HybridDictionary
[Code].....
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Feb 15, 2009
I need to convert the following code to work in a visual studio 2008 windows form application, the moment ObjectQuery, ManagementObjectSearcher, ManagementObject and ManagementObjectCollection are not valid.
im objectQuery As New ObjectQuery("SELECT * FROM Win32_NetworkAdapter WHERE NetConnectionId IS NOT NULL")
Dim searcher As New ManagementObjectSearcher(Scope, objectQuery)
[code].....
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Feb 26, 2011
Im working with my project. I have a device called PIR (Passive Infrared Resistor), capable of detecting any kinds of movement. When the device reached the maximum limit of movementthe red light will turn on. The output of my device is -5v. I want my program to respond when my device detects movement
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Aug 15, 2009
Is it possible to open the same form twice or more, or do I have to make several copies of the same form and open them individualy?
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Dec 2, 2011
I have a small network of PCs and I want build an application in order to manage a database. Every user will have his own instalation on his PC. How can I make those aplication to detect the computers in the network, and to detect and interact with the program installed on the other PCs (update records from the instances installed on other computers, add new records to the database from the other computer etc). Where do I start? Is there any book that specifies that?
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