Check Conditions To Determine Whether The Application?
Feb 10, 2011
Using the Application Framework in a WinForms Project, I need to check conditions to determine whether the application should run at all and if it shouldn't run then I need to kill it before it even shows the main form. My conditional checking is occurring at the MyApplication.Startup event handler, so all I need is the method that shuts down or kills the current application.
I'm pretty sure this question's been asked a thousand times, a few of those even by me, but I can never remember the right language to get any useful info out of a Google or MSDN Search string.
It never hurts to try. In a worst case scenario, you'll learn from it.
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Nov 17, 2009
I have a program that copies files to several servers in succession. If one of those servers is unavailable for any reason, my program hangs for about a minute before it continues on to the next server. Is there a quicker way to determine if the path is available or not?
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Jun 6, 2011
I am developing a program where I will save the information from a "Log file" from an external application..I have a biometrics system that reads and saves the log file to disk,once the user logs to the system, the system will save the file to a log file after that the system that i will develop will read the data from the "log file"(probably a text file) and send it to sql server.
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Oct 21, 2009
I am developing a program where I will save the information from a "Log file" from an external application..example: I have a biometrics system that reads and saves the log file to disk,once the user logs to the system, the system will save the file to a log file after that the system that i will develop will read the data from the "log file"(probably a text file) and send it to sql server what event should I use?
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Feb 2, 2010
My program has many forms that can be launched from the main form, and when launching a form, I need for my program to know whether or not there is already an existing instance of the requested form open before it launches the requested form.
So, if I have form "Search" with button "View" that launches form "Details", I need to know if the "Details" form is already open when the user clicks the "View" button.
Apparently, if I had developed my application as an MDI application intead of an SDI application, I could just do "If frmDetails.visible = True then DoStuff()", but the Details form's Visible property always comes back as False, even when the form is already open. If the form is always being reported as not being visible even when it is indeed visible, what method do I use instead to find out that the form is open/visible/in use?
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May 18, 2011
I have been investigating this for several hours. I have found numerous links, including several here on SO which claim to show how to find the startup path, or the application directory. All of the solutions suggested return a location:
C:Users<my user name>AppDataLocalApps2.0XO8PWL8B.5HH1GZX7M0H.N1J<temp location>
When my WPF xbap is run from a remote location. I need to determine the actual folder of the remote location. I am deploying this to an internal server ABCDEF, so in order to run this application I am entering:
\ABCDEFmyApp.xbap
I want to programmatically determine the server and folder. My reason for this is that each time you publish a WPF with "automatically increment revision with each publish" turned on. The folder where additional DLL's are located changes, additional programs that this program depends on. I want to be able to dynamically determine the correct folder to look at.
I have tried:
'Dim path As String = Reflection.Assembly.GetEntryAssembly().Location
'Dim Path As String = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location)
'System.IO.Path.GetDirectoryName(System.Reflection. Assembly.GetExecutingAssembly.Location)
'application.StartupPath
All of which did not work.These links suggested many of the methods I have tried:
Link1
Link2
Link3
Link4
Link5
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Jun 3, 2011
I have been struggling with my programming class from day one. I still can't seem to grasp the complete logic on how to write code. Anyhow, I have an assignment due that I am stuck on. Here is the assignment:
In this exercise, you code an application that displays a letter grade based on the average of three test scores. Open the Grade Solution (Grade Solution.sln) file, which is contained in the ClearlyVB Chapl8Grade Solution folder. Code the application,using a function to determine and return the letter grade. If the average is at least 90, the grade is A. If the average is at least 80 but less than 90, the grade is B.If the average is at least 70 but less than 80, the grade is C. Tf the average is at least
60 but less than 70, the grade is D. If the average is below 60, the grade is F.
You will be developing the code for the function on your own. Below the Public Class frmMain line, insert this function header:Private Function CalculateGrade(ByVal testScore1 As Decimal, ByVal testScore2 As Decimal, ByVal testscore3 As Decimal) As String
In the function, declare variables for the average score and the letter grade. Calculate the average, use IF/Elself statements to determine the letter grade, and return the letter grade. Create a subprocedure for the Click event for the btnDisplay button. It should call the CalculateGrade function with three arguments ( the three test scores from the text boxes), and display the returned value in the lblGrade box.
[Code]...
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Oct 27, 2009
Is there a way to determine if the application is running from an RDP session or not? Our staff has VPN access and use Microsoft's RDP Client to connect to their computers at the office. They mostly interract with software we've written. I'd like to identify those people that use our applications via RDP as opposed to being physically at their computer.
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Oct 5, 2010
The Question sound like this.Assume the theater keep 20% of its box office receipts. Use the Following test data to determine if the Application is calculating properly :
[Code]...
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Jul 11, 2010
i am new to the whole visual basic deal altogether and i'm sure i jumped into the hardest version. anyway i am trying to make a program for my band director so that when he checks-in/out uniforms its faster and easier. i have the checkout done but the check in is a bit of a trick. i need to read the data in from the file and whenever ", " that character is read it need to go to the next text box so it starts with textbox1 which is lastname and goes to textbox6.
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May 10, 2009
Public Class Inventory_Edit
Private Sub Inventory_Edit_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CategoryDataSet.Category' table. You can move, or remove it, as needed.
Me.CategoryTableAdapter.Fill(Me.CategoryDataSet.Category)
[URL]
I added an "edit" icon on my bindingNavigator. When users click on it, a new form will come out and pull out all the data records from the datagridview. Now the strange thing is that when I wanted to edit the data records, when I left the product name blank, I would get an error message saying "Product cannot be blank" - please see above code. But when I left the "Cost Price" blank(same applies to "Sell Price" and "Quantity"), the error message box wouldn't come out, instead, it did not allow me to move on to another textbox, close the form etc until I filled out that textbox with INTEGER. May I know why the error mesagebox would not come out when I entered the wrong datatype?
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Oct 11, 2011
the testBoolean is set to the value True, but for some reason when debugging, it step through both conditions, so in the end the button1.visble becomes False, but I want it to be set to True.[code]....
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Feb 1, 2011
I am very new to vb, I know there is an error somewhere, I had an assignment which stated that if a number was < 101 or > 500 and the answer is correct the output should be, for example-123, if the answer was wrong then the message output should be wrong number <101>500. Everytime I type in a number(no matter what the number) and click on my check button I get the output message. If at all possible, can you please assist. My professor gave the following example, but I am still not getting it:
Dim strInteger As String = "52.801"
Dim dblNumber As Double
dblNumber = CDbl(strInteger)
[code].....
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Jun 20, 2012
I want to use a value that is pulled from the SQL within the if statement. Ideally i want to do the equivalent of <% If DataBinder.Eval(Container, "DataItem.BookID") == 1 Then%> Is there a way to do this with the correct syntax?
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Jun 21, 2010
How to combine these two conditions in one section
Private Sub DataGridView1_CellValidating(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles DataGridView1.CellValidating
'condition 1
' check given value is numeric or charactr type
If e.ColumnIndex = 3 Then
If Not IsNumeric(e.FormattedValue) Then
DataGridView1.Rows(e.RowIndex).ErrorText = " must be a numeric value"
[Code] .....
'condition 2
' check given value is greater than 0 or not
If e.ColumnIndex = 3 Then
If (e.FormattedValue.ToString = "0") Then
[Code] .....
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Jun 6, 2011
I have and existing .rdlc file where I display the grades of each students as well as the general average. I get general average like
=FormatNumber(Switch(Fields!YearLevel.Value="LC7" or
Fields!YearLevel.Value="LC8",(IIF(Fields!SectionName.Value<>"1st Sec A" and
Fields!SectionName.Value<>"2nd Sec A",
[code]....
I want to display:
"1st Honor" if gen. ave is >=90 but all the subject grades must be >=90 also
"2nd Honor" if gen. ave is >=88 but all the subject grades must be >=88 also
"Third Honor" if gen. ave is >=85 but all the subject grades must be >=85 also
How do I do it?
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Dec 9, 2011
So I am trying to evaluate 3 conditions in an if statement. Its not working how I would assume it should. I basically want to do this:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 And (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
If I write it in that manner it gives inconsistent results. If I workaround by writing it this way it works perfectly:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 Then
If (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
Endif
What is the proper way to do this with only one if statement?
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Jun 8, 2011
Having problem make last if an statement work in the code. the variables in the if statment are doubles but the ide keep telling i need a proceeding if statement. but is already there it is in the last if statement of the code
Public Class Form1
Dim Totals As New List(Of Double)
Private Sub btnclear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[CODE].....................
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Feb 15, 2012
I'm doing a stock Control System as a school Project using An Access 2007 DB and Visual Studio 2010. I'm trying to do an update Query based on two variables entered into comboboxes, I cannot get the VB to accept the conditions for this, Can anyone Help me?[code]I Cannot get the Code to recognise the Last "'", is there a way to do this?
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Jul 28, 2011
The following code is looking for the phone number of contacts in a database when the column "hoohoo" = 15. However it doesnt keep to this condition, but displays all of the numbers. Am i missing a line that tells it to keep to the condition???
Dim SQL As String = "SELECT *, Phone FROM TblContacts WHERE Hoodoo=15"
Dim myOleDbCommand As New OleDb.OleDbCommand(SQL, con)
con.Open()
[Code].....
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Feb 18, 2008
client2 so like this my treeview has be displayed.i can able to display the value in my treeview.my requirement is i need to keep image for the treeview nodes. for example Group1 - sample1.gif server1 -sample2.gif client1 -sample3.gif so i need to keep images to this nodes at run time and i need to chage the image depeds on my need. for example in some situation i will keep sample2
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May 7, 2010
i want to set 2 conditions for a for loop as i want to loop through the same line of code at the same time . here it is as i have it now
it does not work how i want it to as i want both loops to run simuntaneously instead it runs the first loops continuously before the second and way around this?
For Me.i = 0 To maxrows - 1
For Me.h = 1 To maxrows
Me.Controls.Item("TextBox" & Me.h).Text =
[Code].....
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May 11, 2009
I have an application that provides core services for a series of other applications.When another of these applications is started, I want to check that the service application is running and if not shutdown.What is the best method to check for the existence of the other app? I'm thinking that I should be using a global mutex in the services app and checking for it's existence in the other apps. Is this the correct way to proceed?
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Jun 1, 2012
I was wondering if it is possible to check if a specific application is running when I open up a form.
If the application is running I want a label to say running, but if it isn't running then the label will say closed.
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Aug 28, 2010
Is there any way to check if my application really has any dependencies?
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Jan 21, 2009
I want to be able to test if an Excel application is already running on the computer. If it is, I want to use it to create and save a new file. Excel will remain open.If no Excel application is running, I will open Excel, create and save a new file, and then close Excel.
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May 1, 2012
I've got an application which I want to only have 1 open.How would I make it check if the application is already open and only open if it isn't? I've had the idea of using 2 forms, one of which is the proper application and the other which just checks if its running then opens the other form.I would imagine it would check if there's more than 1 of the process name running and if there is close all others?
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Apr 4, 2012
The application loads Patient info(PatientID, PatientName, Levels) from a .txt file on to the first form. The user then clicks the evaluate button and the patient information with cholesterol levels above 200 are displayed in three listboxes on the second form. The Second form exports that information to a .txt file and displays the total number today over 200 and the average
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Apr 10, 2012
I am trying to combine 2 regular expressions into 1 with the OR operator: |
I have one that checks for match of a letter followed by 8 digits:
Regex.IsMatch(s, "^[A-Z]d{8}$")
I have another that checks for simply 9 digits:
Regex.IsMatch(s, "^d{9}$")
[Code]...
Apparently I am not combining the two correctly and apparently I am horrible at regular expressions.And for those wondering, I did take a glance at How to combine 2 conditions and more in regex and I am still scratching my head.
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Jul 1, 2011
how can we add images in treeview using vb.net. Different images in different conditions .
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