Variable Referring To Itself?
Jul 14, 2010I need a string of code that refers to it's filename on the computer. Basically like how batch has %0% to refer to the batch file's name.
View 4 RepliesI need a string of code that refers to it's filename on the computer. Basically like how batch has %0% to refer to the batch file's name.
View 4 RepliesThe redirect .NET uses to send users to my custom 404 page, wipes out the referringURL.[code]...
View 1 RepliesSee this example:
''//file1.vb
Sub Something()
''//...
Functions.LogInfo("some text")
''//...
End Sub
[Code]...
I am trying to do is get interoperability between my "mainwindow" and a class. As far as I know the way to do this is to create an instance of the class (in "mainwindow") for example and then use that instance to call the functions etc... This works. However I want to allow the class to call functions in the "mainwindow" The moment I declare the instance on the class as well it goes into an endless loop.
View 4 RepliesI�m using a loop to open up a number of forms in my app. The forms are named after dates from a db. They are "created" at runtime so to speak.
Everytime a form is opened, the name adds to a dropdown list in an mdi parent form. The first item in that dropdown is a "close all". I want that item to do just that - close all the forms corresponding to the names in the dropdown list. I�m thinking of looping with an integer, starting on 1 (since the "close all" is 0).
So I need something like:
forms(mdiparent.toolstripmenu.dropdownitems(i).close
I have a map of the us that is broken into an html image map. (not asp). What I'm wondering is it possible to get the title of the refering link on the map?
[Code]......
I want to create a function inside my class that will return a boolean on the existence of some data within any structures created with the class.
Public Class MyObject
Public Object1 as String
Public Object2 as String
[code]....
What I don't know how to do is refer to the object that called the function to get values, including the number of items in the referring objects array.
I Imported 2 programs that I made into one solution. I made a "BIG" main menu (new windows form), put two buttons. I code one button to open up the first project (that works fine). I code the other button to open the project I imported, however it says that the name is not declared. Am I doing something wrong?
here is my code for the "BIG" main menu:
[Code]...
now only the "Original name of first project" appears to be not declared, if I delete "Original name of first project", then "the project I imported"is not declared and so forth. Note: These are not the exact names I called my forms. I'm just trying to explain it clearer.
I have added some classes to my project and now i want to define a variable as one of the classes, for example the class is called xml and i want to create a variable called XMLfile and have it as the class XML.
Can this be done? Or can variables only be declared as types (like Integer, string, etc)?If you're not living on the edge, you're taking up too much room
I'm working on a very basic VB.net frontend for an Access database and have stumbled upon a problem.
Dim ds As DataSet
MaxRows = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows.Count
i = 0
Private Sub Navigate()
txtCourseReference.Text = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows(i).Item(1)
txtCourseName.Text = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows(i).Item(2)
End Sub
I get the error that Object Reference is not set to an instance of an Object. I think this is because I haven't defined the DataSet as "Course_assignmentsDataSet"- the one I want to use- but I'm not sure how to do this.
My LiveView Property is named lstView and is called by this line:
[Code]...
The first reference to objListItem gets this exception: I am referring to the object as new but obviously not in the right way. objListItem is not Null when this line executes.
Does anyone know how I can include an existing dimensioned integer in VB code in a formula when using location indices (either R2C2 or R[2]C[2])?
I have integer Location set to the value 6 in some earlier programming steps, and now I'd like to be able to create other formulas and someimes use this Location integer into these formulas. More specifically at the RC and R[]C[] locations in formulas.[code]...
[code]...It is a multiline textbox, and I want to be able to enter different pieces of information (info1, info2, info3) into each line.
View 16 RepliesI have an app that pulls up a webpage that has a button on it with the following ( I CANT change the webpages, but I can change anything in the App.)
[Code]...
I use the following code to get the shortcut files in a folder and to list them in a Listview control. But is there a way to extract the path of the EXE to which this shortcut is referring to ?
vb.net
Dim di As New IO.DirectoryInfo("C: est")
Dim aryFi As IO.FileInfo() = di.GetFiles()
Dim fi As IO.FileInfo
[Code]...
I am developing an application which created a series of labels using code such as this below[code]...
View 3 RepliesI'm using VB.net 2005 and sql server 2000 i'm fetching the data into datagridview, but datagridview has several datasource depending on the "select case " Now can i export the data from datagridview without referring to dataset/datatable?
View 1 RepliesHow would one remove an item from a ListBox and then remove that line from the TextFile and repopulate the ListBox with new data in Visual Basic.Net?[cod]...
View 2 RepliesWhy would a .sln solution file open and appear empty in Microsoft Visual Basic 2010 Express - i.e. no windows showing projects and code files etc.When I inspect the file in a text editor, it contains references to vbproj files (which are present) which indicate that it should not appear as empty.No error messages are reported when the file is opened.
View 2 RepliesI am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this
Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1
[code]....
I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.
I receive the error -
[Code]...
Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
Say that i have the following code that parse about 20k records from the DB.
Code #1
vb.net While reader.Read()
list.Add(If(Integer.TryParse(reader(0).ToString, 0), Integer.Parse(reader(0).ToString), 0))
End While
And then another code which does the very same thing but it seems to be a little cleaner.
Code #2
vb.net While reader.Read()
Dim storeowner As Integer = 0
Integer.TryParse(reader(0).ToString, storeowner)
list.Add(storeowner)
End While
This is what i am confused about; does the compiler creates a new variable automatically when i use the if statement without strictly declared variable? What approach is better in sense of performance?
I am looking for a good resource on variable naming conventions to illustrate variable type and where variables are declared. So I will have public variables, Private variables, private or local variables. I also may want to declare variables with the same name in different class code (i.e. in the code behind different forms). I am assuming good coding would dicatate a prefix for declaration location.
View 4 Repliesi have this error in the line of with xl.active......Object variable or With block variable not set.
Dim xl As Object
xl = CreateObject("Excel.Application")
With xl.ActiveSheet.QueryTables.Add(Connection:= _
"TEXT;C:Documents and SettingsUserDesktop429MEDICA2.TXT", _ Destination:=xl.Range("$A$1"))
[code]....
Now I have the need to get a current value from a bindingsource in a property of a user control.In a previous thread I had tracked down the "Object variable or With block variable not set" to the return in the Get block of a property. At the time I was only using the Set so I just commented out the offending code until I needed it.
[Code]...
The error does not occur during a system compile, only upon saving the container object of the user control. As I said the Set works correctly, only the Get causes the error.I would like to know what I am missing/misunderstanding and am open to other suggestions of handling retrieving the current value of a bindingsource in a user control.
Using Visual Basic 2008 Express. I need to pass a variable to another form. Or else make the variable visible to both forms.
View 4 RepliesI am using vb2008.net express,I test vs2005term it work, can any tell me what is the input variable and output variable of this terminal?how to catch the input and output variable to a textbox1 for sending and a textbox2 for receiving when I press send button? is that possible?
View 1 RepliesI have the following code that I am using to parse out a test file. I am getting variable conversion error in Sub Main() when I assign file = Read(). The return value of Read() is a TextFieldParser type. How do I assign the proper variable type to "file" so I can write the output to a text file?
Function Read()
Using MyReader As New FileIO.TextFieldParser("C:UsersColinDesktopParse_Me.txt")
Dim currentRow As String
[Code].....
I have the following code but I get blue squiggly line in cnn and when i point my mouse pointer on it i see this message "Variable 'cnn' hides a variable in an enclosing block"
Private Sub BtnLockUnlock_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnLockUnlock.Click
Dim IsLocked As Boolean = FpSpread1.ActiveSheet.DefaultStyle.Locked
[code].....