VS 2005 - Boolean Checking - Better Performance By Checking For A True Value
Aug 4, 2010Is there any better performance by checking for a true value like this:
[CODE]..............
Than like this:
[CODE]..............
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Logic For Checking A Boolean Of An Object?
Mar 7, 2012I have a hashset (of posdata), pos data containing a boolean and a label containing the hashkey. I need to draw up a condtion where it will check that if a boolean for two or three different records does not equal to false. And if the condition is true i want to set the boolean of the two or three records to false. Here is an attempt,
ElseIf (position.strLabel = "b2" And position.blnAvail <> False) And (position.strLabel = "b1" And position.blnAvail <> False) And (position.strLabel = "e1" And position.blnAvail <> False) Then
[Code]....
DB/Reporting :: Is Operand, Checking For True/false
Jan 10, 2011I have a bit of code that goes like this. [code] The problem is the MyInclusion = "Aspire Inclusions Pack" and the TblPackages. Rows(n). Item("fldPromotion1") also = "Aspire Inclusions Pack" BUT the CheckTrueOrFalse is FALSE. I need it to return a TRUE value for CheckTrueOrFalse.
View 1 RepliesVS 2005 Checking Database For Row
Apr 25, 2009I have a program which is almost complete, it gets data that is new or newly modified (well at least since my program last got this data). The problem I have is currently i'm adding this "new" data but i've just clicked some of this data may be in my database already just updated. For example, I have added some user data to my database but a user has just updated their user name - so this is now newly modified! I don't want to add it as new data I want to update my current row in my database. My question is how can i do a SQL query in my access database to see if this row exists or not?
View 2 RepliesVS 2005 Checking E-mail?
Apr 2, 2009Now that I know how to send e-mail, how do you download it from the e-mail server? My program will have the password and all.
View 1 RepliesVS 2005 Checking If A Row Exists?
Dec 2, 2009I think this is a really simple question to answer but I can't find a better solution. Basically I am importing data from an external source and as I go through importing each for I am doing a for loop to see if the row already exists; this is taking a life time and I feel it is a very simple way of doing it. Is there a better way to see if a row already exists using specific columns and key indexes?
View 5 Replies2005 Checking If Something Should Happen Today?
Mar 7, 2009I have a form with seven tickboxes - one for each day of the week - each one saved in my.settings.monday, my.settings.tuesday, etc Now I need to check if something should happen today and the code I'm using (below) seems very longwinded. Can anyone help 'tidy it up'?
If Now.DayOfWeek = DayOfWeek.Monday And My.Settings.monday = True Then
'do it
End If
[code]....
VS 2005 - Checking For Internet Availability
Jan 27, 2010I have a function to check for internet availability where I use:
My.Computer.Network.IsAvailable
However it only works in my computer. If I install the application in another computer, the check does not work. Does it has anything to do with My keyword?
[2005] Checking If A CheckedListBox Is Empty
Feb 20, 2009In my application I load a CheckedListBox from text file apart from looking at the form, how can I trap the error of not completing the action?
View 1 Replies[2005] ComboBox Item Value Checking?
Feb 24, 2009Case: I have one ComboBox which i fill up by using DisplayMember, DataSource with DataTable.
[Code]....
When user key-in in ComboBox (not select from the list), I check with above all possible but still got nothing. According to my knowledge, .Contains(cboStudent.Text) should work. Right?
I out of idea to check this checking.
References Missing When Checking Files To VSS 2005?
Sep 1, 2009I have added reference to few dlls in my VB.net Project. When I check into Visual source safe and get latest version from another machine, VS.net 2008 throws errors.I have to add the references again in that new machine. Is there anyway where I can keep the references in spite of files checked in to VSS?I need to send copy all the files to production server and we don't have VS.net on the production box to add reference and build the application.
View 2 RepliesVS 2005 - Checking A CheckBoxes Condition With A For Next Loop?
Mar 25, 2009My application uses 12 checkboxes. Dependant on the status (checked or unchecked) different action are required. I can't seem to be able to structure a for next loop to do this.
View 7 RepliesVS 2005 - Checking Folder For Any Files Inside
Jul 23, 2009I want a code that checks if there are any files in a Folder. So I want to specify the folder name.
This is what it should do:
It Checks if there are any files in the folder (Data)
If there are no files in folder:
Form2.Show()
If there are files in the folder:
MsgBox ("Welcome", MsgBoxStyle.OkOnly, "Welcome")
VS 2005 Checking If A Datagrid Is Assigned A Datasource
Jan 5, 2010Is there a way to check whether a datagrid is assigned a datsource. How can I distinguish a unassigned datagrid from a datagrid that is assigned a datasource.
View 2 RepliesVS 2005 Checking Null Excel Worksheet?
Jun 25, 2009how to check null excel worksheet?
View 2 RepliesVS 2005 Checking Whether The Client Is Connected To The Internet Or Not?
Mar 13, 2010I have written a code for sending emails using my vb.net application,ok.Now i want to inform my client if and only if he is not connected to the internet before the sending emails.so it means the purpose of my code will be to check if he is online or nt and if not then inform him to get online and then try sending the email.How to do this?
View 5 RepliesVS 2005 - Checking When Paste Function Selected For Textbox
Mar 19, 2009How I can check when someone uses the standard paste function via rightmouseclick? I want to check something before the text can be pasted.
View 3 RepliesChecking If A Port Is Open - If It Is Open Then Return True, If It's Closed, Return False?
Dec 28, 2010I'm making a Visual Basic GUI application to display whether a number of my ports are open for people to know whether things like my website and my Minecraft server are open.My problem is I have absolutely no idea how to do this in Visual Basic.Basically, I'm asking for something which sends a signal to an IP with a specific port, if it is open then return true, if it's closed, return false. Similar to: http:[url]....
View 1 RepliesVS 2005 Catch Media Player Error - Checking The Extension Of Each File Before Paying
Jul 13, 2009I m selecting the folder & playing all the files in the media player, of that folder. As u know folder contains all types of files including text,zip,image & so on. So I want that when URL that is assigned to Media Player is .txt,then i assign any default image from resources. I do not want to check extensions- Currently I m checking the extension of each file before paying but i dont want dat.
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"Conversion From Type 'DBNull' To Type 'Boolean' Is Not Valid" After Checking That It's Not DBNull
Jan 18, 2012In my ASP.Net Web-Application, I'm getting this error: Conversion from type 'DBNull' to type 'Boolean' is not valid.
[Code]...
C# - Performance: Assign Boolean Value Always Or Check Value First?
Jan 3, 2011I'm sure it is negligible, but given that I want to assign true to a boolean field from within a method, does this choice make any difference? If so, why? field = true; // could already be true, but I don't care
View 4 RepliesBoolean Changes From True To False?
Jan 18, 2010I'm pretty new to Vb so I'm not sure of all the correct terminology etc.
Private Sub Add_mousedown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Add.MouseDown
Dim Addition As Boolean
[code].....
How To Set Boolean Value To True Automatically
Jan 27, 2010I have a form which creates a new school talk appointment. In my database, there is a column called 'active' which is boolean (true or false). Then everytime I creates a new school talk appointment and added it to database, the active is automatically set to 'false'. how to make it set to 'true' instead?
View 10 RepliesForms :: Set A Boolean Variable To True?
Aug 18, 2010I am trying to up a private sub routing based on the Text Changed Event for a listbox, inside of the event, I want to set a boolean variable to true. I have it set up, but for some reason it is not getting called.
Basically what I am doing is the user is being prompted to enter data in an input box. I am taking the data that is entered on the input box and populating it in a list box. I want to know if the text in the listbox has been changed, hence changing the blnIsChanged = True
Can I use text changed with a listbox???
Casting A Boolean To An Integer Returns -1 For True?
Sep 1, 2010I am working with some VB.Net code that seems to be casting a boolean value to an integer using CInt(myBoolean). The odd thing that is happening is that it returns -1 if the value is true. For example:
CInt(True) // returns -1
CInt(False) // returns 0
Is this common in other languages? I thought that a boolean would be 1 if true and 0 if false. Also, is there a way to make VB assign 1 to true instead of assigning -1?
Deserialize Missing Boolean Field To TRUE?
Oct 4, 2010I'm deserializing a custom object from a file to an object in my app using the XmlSerializer. My issue is that I want a field in the object to default to "True" rather than "False" for a new property that doesn't exist in the file that I am deserializing from.
By default, .Net is assigning this value to be false because it doesn't exist in the file and I want it to default to True if it doesn't exist. I used the System.ComponentModel.DefaultValue(True) attribute on the field in the definition of the object, but that didn't work. Does anyone know how to do this?
In What Circumstances Will The Following Boolean Expression Evaluate To True
Jun 5, 2010"In what circumstances will the following boolean expression evaluate to true?
strAlphabet.indexOf(StrCharacter) >= 0 And _
strAlphabet.indexOf(StrCharacter) < 0
Once you have answered that question, you should be able to complete this description: the expression indicates whether strCharacter is ..... but is not...."
Public Function Returns Boolean True Or False
Jul 28, 2011I have a math program that I am working on. One of the exercises has a random word and 6 radiobuttons. The user has to select the radiobutton that displays the exact number of letters in the random word. What I am having trouble with is creating a Public Function to check if the answer selected is the correct one. The radio buttons are within a groupbox. The Public Function returns a boolean True or False.
View 4 RepliesWhy Boolean True Is Equivalent To -1 If Identifier Type In Integer
Jan 24, 2012Dim method1 = Function(x As Integer, ByRef y As Integer) As Boolean
If x = y Then
Return True
Else
[code]....
.net - Checking For Comments?
Jun 2, 2011i am writing a vb.net program which gets a c program as an input and checks it for errors,now i want my program to skip the comments in the c program,i have written some code but its not working
For Each line In TextBox1.Lines
sample = TextBox1.Lines(k)
Dim len As String
len = sample.Length
[code]....