I want to be able to check VB code for VB-specific items (for example, vbCrLf instead of ControlChars.CrLF). Is there anything (tool, VS setting or plug-in, etc.) that will check VB code for these?
View 2 RepliesIn developing a Windows Forms application (VS2010/VB) with several dozen classes and modules, I seem to have incorporated a variety of Win32 API function variations throughout my application, some of which seem to be duplicative/redundant. For improved code
[Code]....
My application is like this : i have to search my data from database with some check box and text box when user select check box specific function go on and then when user enters some range of value in textbox then the result will shown in data grid view after that i can print it by selecting data
my vb.net code is as follow:
Imports System.Data
Imports System.Data.SqlClient
Public Class XtraForm1
[CODE]............
I m also pasting the demo picture.
Is there a way to check specific pixels in a picturebox to check the color? Basically what I have is a black square with some white dots, and I want to find the position's in the picture of the white dots.
View 2 RepliesI'm building an application that will need to run a specific functions at user defined times I need help with setting up the schedule part of the app. What I would ideally like to do is be able to set up an "event" which will occur at a specific time and date or at a specific time on specific days such as 9:00 Monday's Tuesday's Wednesday's and Saturday's.
View 2 Repliesi working on the update function using textboxes and a checkbox however the error arises when it gets to the check box the error is "Syntax error (missing operator) in query expression 'role_id right_id enabled_flag'." i cant see the error
my code is
strsql = "update cg_security_user_right set user_id=@field1, role_id = @field2, enable_flag=@3 where role_id right_id enabled_flag "
Dim objcmd As New System.Data.OleDb.OleDbCommand(strsql, acsconn) ' the
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What I am trying to do is have a class where the functions of the same name are both instance functions and shared functions.
Public Shared Function Get...(byval xx as xx)
and
Public Function Get...
The Public Function uses a Property xx created in the constructor, whereas the Shared Function has the parameters (byval xx as xx).
I have a code its for a pc game. Basicly it scans the chat using winapi calls. I'm trying to make when I type _place ammo (a vaild type of ammo that exists in game which is located inside dim vaildammo) I want it to make sure its a valid type of ammo to be placed. I used a for each statement but It doesn't seem to work.
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I have a form called document_form. I have three variables:
Dim Doc1, Doc2, Doc3 as Document_form
How do I check if a particular form exists? I want to show Doc1. If it does not exist I have to first create it.
Something similar to:
If Doc1 = Null Then
Doc1 = new (document_form).
End If
I'm using the following code to read values, from a parallel port. Can I check for multiple cases by using 'and'? [Code]
View 10 RepliesI have this code:Dim Result As New DataTable DataAdapter.Fill(Result)
'bind data to visible surname/name grid If Result.Rows.Count = 0 Then NoInputBottom.Text = "No Results. Please widen your search criteria and try again" NoInputTop.Text = "No Results. widen your search criteria and try again" Else
GV.DataSource = Result
GV.DataBind()
End If
I have also tried moving the check to the gridview like so:
If GV.Columns.Count = 0 Then
NoInputBottom.Text = "No Options Selected: Please select your search criteria and try again"
NoInputTop.Text = "No Options Selected: Please select your search criteria and try again"
End If
When I run the code. the noinput labels do not have value, the null check seems to be failing? Please can you tell me how to display a message if the search returned no reults.
How would I go about referring to specific listview items directly.
Under certain circumstances I want to check a specific listviewitem, but i can't seem to refer to the specific item of the listview...
any method that can check for specific value of a string whether it exists in the string and if it does then that whole string will be captured with that specific text.
View 15 RepliesHow can i check if a dataset contains a specific value?
View 1 RepliesI'm writing an application that will be used in a mobile environment where network connectivity will be up/down regularly. How do I check to see that a specific network is available?
View 2 Repliesi need to check for a specific DateTime value in my table from my code (VB.NET) and i don't know how to format the DateTime as a string. i've read that SQL Server will recognize my string if it's in either date, time, or date and time format. i mean:
'May 15, 2004'
'5/15/2004'
'20040515'
[code]......
I'm wanting to add a some extra code within my application. My app is a single form that sets some environment variables before calling a one of two possible 3rd party executables to run. I have set via regedit the file association for files to open via my app but what I want to do is have my app check to see if either 3rd party app is already running. In short I'm trying to ensure either 3rd party app stays as a single instance.
If a user were to try an open another instance: 1) my application should simply terminate (no warnings, no msg boxes etc...) 2)the file that the user was trying to open should open within the existing instance of the 3rd party application. The problem is I don't quite know how to achieve both parts I imagine that this 'instance check' should happen as the first bit of code so that if no instance of either 3rd party app is found, then proceed with rest of my application. I have tested using some lines of code at the top of Sub New(). Here's what I have so far for checking for both 3rd party applications:
Public Sub New()
If IsProcessRunning("ustation") = True Then
Me.Close()
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This gives me an error when I debug (Cannot access a disposed object)
I tried this code but I don't know how to complete it. the code is to check if there is a file with extension ".mdb" in folder Debug in my project, and if there is a file it will get the name of it.
MsgBox(IO.File.Exists(IO.Path.HasExtension(Application.StartupPath)))
my question is how can i check a string for a specific char (for example, in the string:"242.421" theres the char "." how can i make a rule so that char can only be typed once... (in a textbox) so when a user click the "." button on their keyboard it won't allow it again (more than once)
View 5 Repliesmy application i call a COM API that open's a dialog window that the user has to put some strings, what i'm trying to do it's before calling the method of the api, i create some service/background worker that checks for that dialog, and when the dialog shows up, fill all the fields...
It's possible to do somehting like this?
VB.NET
mySubThatWillWait("WindowName") 'To stay running until finding the window and fill the fields
Dim result as long = MyComCall.Run(Me.Handle) 'Call the Method
I have a Check Box that the use checks to indicate that a specific situation is present. When the User checks the box he gets a Message Box reminding him that the condition must be fulfilled. This works fine and the database reflectthe fact that the Check Box is filled.
At a later date, if the user calls this record and fills the form, the Check Box is triggered and the message Box appears in the middle of the form fill operation.
Is there a way to prevent this from happening. I want the Check Box checked but don't want the message box if the change is triggered by the fill process.
I need to check for specific words so that the program will know what smtp client will be used. For example. If the from textbox will have @yahoo.com on it then the program will make use of the smtp for yahoo.
View 2 RepliesLet's say I have a PictureBox with an image of a house, for example, and I want to know if the user clicked on the roof, the door, the window, or the walls.
Is there some way to, maybe, set up an If statement so that it checks what the coordinates of the mouse click was and compares it to a set of pre-determined graphed points to decide what object was clicked?[code]....
I want to check if a specific TCP Port of an IP address is open.
How can I realise that?
I'm using extension methods based on an array and I would like to know if there is an easy way to check that array got a specify size instead of me doing a copy paste of
if array.count != 1000
throw new exception "size of the array does not match"
in about ~50 extensions
this a small sample of extensions that I use, I got WAY more
<Extension()>
Public Function IsWhite(ByVal board() As bitPiece, ByVal pos As Integer) As Boolean
Return (board(pos) And bitPiece.White) = bitPiece.White
End Function
[code]....
I am using impersonate user to copy files form one location to other.
Only impersonate user will have write permission on the destination folder.
But i want to check before if that user has write permission before i copy file.
Currently i could able to get it using try catch exception, for that i need to perform the copy file process
I have multiple items in a checklistbox. In the page load, I'm trying to check specific items in the list (2,4,8)
I've tried cbl1.items.Item(2).checked, and different combinations of this and I can't get anything to work.
I'm using HtmlAgilityPack to parse HTML. I want to check if an element has a specific attribute. I want to check whether an <a> tag has the href attribute.
Dim doc As HtmlDocument = New HtmlDocument()
doc.Load(New StringReader(content))
Dim root As HtmlNode = doc.DocumentNode
Dim anchorTags As New List(Of String)
For Each link As HtmlNode In root.SelectNodes("//a")
If link.HasAttributes("href") Then doSomething() 'this doesn't work because hasAttributes only checks whether an element has attributes or not
Next
Is it possible to define my list of strings like in 'good old' VB60, to use only on ebyte of memory for each character? .NET always seems to store any string as unicode, which doubles the required memory. The case is that I have a huge list of strings, all of the same size. It is about 50.000.000 items, 12 characters each. You can imagine I am running out of memory in no time. I tried converting them to arrays-of-bytes but in that case I loose the possibility to perform a "LIKE" statement in a FOR-EACH loop to check for a specific item.
View 6 RepliesI am using impersonate user to copy files form one location to other.Only impersonate user will have write permission on the destination folder.But i want to check before if that user has write permission before i copy file.Currently i could able to get it using try catch exception, for that i need to perform the copy file process.
View 7 Replies