I made this code but I have problem to how assign IP addres to the checkbox.I try to make a remote shutdown program when any person select the checkbox make shutdown or reboot the select pc. this is the code:
Imports System.Net
Imports System.Net.Sockets
Imports System.Threading[code]....
i wanted to ask how to make picturebox1 ,to which functions are already assigned, perform the same function as picturebox2 ,to which no functions are assigned.For example:I have already made picturebox1 and have assigned it alot of function like when play button is pressed then picturebox1.visible = true and when we press pause button picturebox1.visible = false. So now i decided to make a theme and have to remove the picturebox1 and want to allow the picturebox2 to havefunction of picturebox1.But when i disable the theme the function of picturebox1 should go back to picturebox1.
View 6 RepliesI have a question, I can't really find the answer...Basically I have 2 FormsIn form number 1 I have 2 pictureboxes. I want to create a checkbox in form2 that says if checkbox 1 is checked then show picture 1 in form 1
View 1 RepliesI have a ListView with Checkboxes in vb.net and what I want to do is when the user check the checkbox, the program ignore the response of the user in checking the checkbox, instead it leaves the checkbox uncheck.
View 4 RepliesI am creating an Interactive map which displays the facilities when the user clicks on the Checkbox, such as toilets.It will display all the toilet locations via PictureBoxes.I want to do this without having to write all this code?[code].....
View 15 Repliesi have 5 checkboxes in webform and textbox1... when i search the record using the date specified in textbox1 when i enter 11-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox2, and checkbox3 will be disabled and unchecked .....
[Code]...
I've wondered if i can make it so when i click on a checkbox you may not beable to check another. And i do not want to use radio buttons
View 9 RepliesI have a DataGridViewCheckBoxColumn who's column name is "booReadyToReport want to hide all the checkboxes in this column if "bintAnalyteCodeID" doesn't equal the selected value in a combobox on my form. ut I run this bit of code the DataGridView DataError event fires currently, have nothing in the event except an comment. he code seems to work, but I'm new to VB.NET and I'm wondering if this is the correct way to handle thishould I use the CellPainting event?
highlight rows with RBF3
For Each dr As DataGridViewRow In Me.dgvCalculatedResults.Rows
f dr.Cells("bintAnalyteCodeID").Value = Me.cbxAnalyte.SelectedValue Then
[code].....
I have some DataGridView code written in vb.net. (Nothing is attached to a datasource.)The 4th column is a checkbox cell.How do I detect if that checkBox is checked or unchecked?This code strangely reports TRUE or FALSE at random times. It even turns ON the checkbox in rows other than the row I clicked in. (Huh?)
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
Dim whichGrid As DataGridView = CType(sender, DataGridView)
[code].....
I've tried countless other methods... none seem to actually get the checkbox ON/OFF value in vb.net.
I've got a form with parent-child setup. The parent displays name and other demographic info.The child displays multiple addresses, one row at a time. There can only be one primary address for a name and this is designated by a checkbox at the top of the child form.If the user wants to change the primary address to another address,then they find the other address and click on the checkbox.The form checks the other addresses and if one is found that is designated as primary,the user is warned that one already exists and prompts them to change it.
So for example, a name has 2 addresses, the 2nd being the primary address.The user wants to change the 1st address to be primary.They click on the Primary Address checkbox for the 1st address.A warning displays that there is already an address listed as primary.The user then answers the prompt to change the 1st address to the primary address.The checkbox for the 2nd address will be unchecked and the checkbox will be checked for the 1st address.My problem is getting the checkbox unchecked for the 2nd address.If I close the form and reopen, then the checkbox is unchecked.How do I refresh the checkbox for the 2nd address?Here is the code I'm using to find if an address has already been marked as primary:[code]......
From the MSDN Article I read I should be using the StringBuilder rather than concatenating a normal string.However I do not know why I get the following errer: "Variable 'ShowString' is used before it has been assigned a value. A null reference exception could result at runtime."
[Code]...
I am working with VS 2010 web VB 2010 asp.net..I am trying to read table data with the help of dataset.xsd..i create a loginDataSet.xsd and in index.aspx.vb web page i wrote this code [code] But it showing that abc variable is used before it has been assigned a value a null reference exception could result at the runtime .
View 5 RepliesI am using visual basic 2008How can i fix this problem:Warning1Variable 'bla' is used before it has been assigned a value. A null reference exception could result at runtime.
View 3 Repliesthis is my first post I'm making a cheque book balance for my college assignment, which 1st form will record the data of the cheque (Cheque Number, Payee's Name & Cheque Amount) and this information would be stored to a .dat file. with the 2nd form will balance the Current balance in the account minus the cheque amount which has been stored in the .dat file and then will list it in a list box with the payee's name, cheque number, etc. I have used a module which is below:
[Code]...
I'm getting the error message "Variable 'WordCreated' is used before it has been assigned a value..."As such, VB is not even letting me assign a value to any slots in the array.
Dim WordCreated() As String
WordCreated(0) = "Hello!"
That's just a snippet of my code, when declaring the variables. The "Hello!" part has just
[code].....
I declare:
dim PS as powerstatus
Then I type:
MsgBox(PS.whatever) and then the PS is underlined with a green line with a message saying something like: variable PS has been used without being assigned a value. How can I assign PS a value so I can use it? I know that the msgbox code is probably wrong - I'm just using it as an example.
I have this function to see if all of a certain columns DataGridViewCheckBoxCell values are True. It however fails because it seems to think the current value is false. I'm running this code in the _CellContentClick event, is there somewhere else I could run this, after it's assigned the value to the cell?
Private Function AllTasksAreCompleted() As Boolean
Dim result As Boolean = True
For Each dgvRow As DataGridViewRow In Me.gridTasks.Rows
[code]....
[code] I'm confused with the last line, because cnn.CreateCommand has not been assigned any value ( so it should be empty ). Why would you then assign this (cnn.createcommand) to cmdselect.
View 4 RepliesI receive the error -
Variable 'email' is used before it has been assigned a value. A null reference exception could result at runtime.
Private Sub surname()
Dim email As String
'Dim query As String
[Code].....
I am using vb.net 2003 for a stand alone windows program. I access an Access database file via Jet 4.0 and OleDbDataAdapter.
The program is like a "check book" for commercial fishermen to track their landings in relation to the amount of "quota" that they have been assigned. The program is structured so a fisherman can enter multiple boat names and track each one seperately. To work on a particular boats account, the fisherman would select a boat name from a drop down list. The boat name is then captured and assigned the string variable name of "xid" and in a Module have this code:Public xid As String
I have used the DataAdapter Configuration Wizard to setup the data connection and assign the DataAdapter and DataSet. I went into the code and manually entered a WHERE clause to filter the data for the selected boat. The proper syntax was an issue that I had a problem with earlier, but once I got that correct, the program worked fine. The code that works is below:
[Code]...
I used code below to run rollback but in catch block, a warning message said that thistransaction used before has being assigned a value. How to void it?
Dim thisConnection As New SqlConnection("server=(local)SQLEXPRESS;" & _
"integrated security=sspi;database=MyDatabase")
Dim sql As String = "DELETE FROM Employee " & "WHERE ID = 10"
[code]....
This code works well but somehow it is giving me a warning saying: "Variable 'str1' is used before it has been assigned a value. A null reference exception could result at runtime."How can I remove the warning.
Public Shared Function getAllColumnNames(ByVal tblname As String) As String()
Dim com As New OleDbCommand
Dim con As OleDbConnection
Dim str1() As String
Dim dtable1 As DataTable
[Code] .....
This program is for advertising ads and prices are determined by which radiobutton is selected.This program uses objects created from a class . I am getting a waring message that Variable 'ad' is used before it has been assigned a value. A null reference exception could result at runtime. the warning is at ad.size = 225.So how do I get the variable filled before used if it depends on which radiobutton is checked? [code]
View 8 RepliesI realize this is probably trivial, but for some reason I'm not sure how to pull it off. Say I have the following enum:
Public Enum FlagType
Docs
Email
[Code]....
How do I then at runtime determine which flags where set for flags? In this example, it should be Docs and Email.
Dim strSearch As String
strSearch = "[Player] Like '" & searchtext & "' AND [Year] Like '" & strYear & "' AND [Brand] Like '" & strBrand & "'"
[code].....
i am using the following VB6 code and I get this error Variable 'osv' is used before it has been assigned a value in VB2010.I want to use this code/method for getting the version, I just want to fix this
Public Class Form1
Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" _
(lpVersionInformation As OSVERSIONINFO) As Long
Private Structure OSVERSIONINFO
Dim OSVSize As Integer
[Code]...
As i tried to describe inside the code there is a strange assignment problem: According to code why FF000010 could not be assigned to the variable and there became an "overflowException was unhandled" while data inputting into the integer value that i could not resolve the problem.
...
MsgBox(Hex(AlphaMix(16, 255)))
...
Private Function AlphaMix(ByVal pInteger As Integer, ByVal pAlpha As Long) As Integer
[code]....
I have 2 columns of checkboxes in a gridview, where the header also contains a checkbox. If i select the header checkbox, it will check all corresponding checkboxes in its colomnow, what I want to happen is if I select column 1 checkbox, column 2 checkboxes should get unchecked and vice-versa.
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
[code]....
I am refreshing a form, and I want to assure the checkboxes are cleared when refreshing. I can clear the textboxes and masked textboxes, but cannot figure out to revert the checkbox back to the UnChecked state.
[Code]....
Following code sample should concatenate the value. Concatenated value has to be assigned to variable AlphaStr. But result is always null in the variable AlphaStr.
[Code]...