I have a button and i want it to check for a condition to display different msgbox.
Below is my code:
Dim a As String = "";
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
[Code].....
But i got the following error when i clicked on the button.
"Input string was not in a correct format. "
How to check a check box based on a condition at run time?
View 3 RepliesIn my program, I have a condition I need to constantly check for. When my program gives an error, I change a label to a different text, lets say "fail" for now. I'm trying to make a condition where the program constantly checks for the label change to "fail" from the start of the program. I am having trouble trying to get this to work.
View 4 Repliesi'm starting to learn VB, i've wrote a few little programs following the books and internet resources, so far so good until now, i have to check a range of double integers(e.g. 170-50) if the left integer is == 170 and the right integer is == to 50 then you profit.i have to do this about 200 times but i just need a litow to get started, i've searched for about 4 hrs and read for about 5 and still nothing.
View 2 RepliesI'm using a loop condition to check if there is null value in the columns, then remove it.
-Original author
[STart:]
For i As Integer = counter To dt1.Columns.Count - 1
For x As Integer = 0 To dt1.Rows.Count - 1
if some condition then
something = true
[Code]...
Sometimes it runs correctly and sometimes even though when i becomes greater than (dt.columns.count - 1), it still executes the for loop and throws an error that there is no column with that index. I must be missing something here but I'm not able to debug the issue.
I have pulled some records in DataGridView from database. Now I want that when I select some rows from DataGridView and click on command button, ID's of all selected rows should be displayed through message box. By using followng code I am able to display ID but problem is, "When I select multiple rows and click on Button, msgbox shows only the ID of later selected row, I'm using Visual Basic for Windows Form.
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
For i = 1 To DataGridViewIU68E.SelectedRows.Count
[Code].....
I share my internet connection with other users through LAN. There's some one who keeps cutting me off from time to time to increase his download speed.I know that there is some orders that can be written in the command line to reconnect to the internet after every cut but I don't know them.I started teaching myself programming under VB 2008 Express as a hobby few weeks ago. I was wondering if there is a way to write a program in VB to check the connection condition every few milliseconds and reconnect again to the real gateway till the attacker get bored.
View 25 RepliesI am using this code right now
If i.Contains("1") Then
MsgBox("2")
Else
End If
But what I want to do it have it check multiple text like this
If i.Contains("1") or ("2") or ("3")Then
MsgBox("H2")
Else
End If
But that doesn't work?
I just want a button to check if a certain process or window is running and if it is i just want it to show a message box.
View 2 RepliesI need to ba able to display the results from sql into a MsgBox and have the option Yes/No.
My SQl is : SELECT account FROM Ta Where cost=0.
this will return about 10-15 rows, i need to see te accounts with o cost befor i continue.
I know how to display a message using the msgbox("text","title","msgbox type") but i dont know how to check the result
View 3 RepliesIt didnt work for me and i dont know why. i want to display text on label when the form load.the text to display is according to the enable or disable state of some custom button .
[code]...
I have a for loop condition as below coding for looping to change word on label.text, but as a result, it just only display the last value.
how can I do to display each value for a looping.
i want the result is the label1.text to show 1 then 2, then 3, then 4.......finally is 10.
for i as integer = 0 to 10
label1.text = i
next
My aim is to choose a value from Listbox1 and on Listbox2 I would like to display the corresponding value from a table in my database. I mean, when I select Product A from Listbox1 (which is getting its values from row "Model" in my database table), I should see its price on Listbox2 which is available in the "Price" row of the same table (and also manipulate this price in different places for calculation etc.) . I am not sure if the best way is using "databinding.filter".
Here is the code I have but I cannot making it work:
Dim dtCOP As New AmetailorDataSet.COPDataTable
Dim adapterCOP As New AmetailorDataSetTableAdapters.COPTableAdapter
adapterCOP.Fill(dtCOP)
[code]...
A small note: my aim was using a Richtextbox instead of Listbox but I am told that Richtextbox is not suitable for using with datasources.
Below is the code snippet where i would like to display a msgbox if there are no matching records. I always get a NullReferenceException at iRows = ds.Tables
[Code]...
Is there any way to display the full array with delimiters and everything?The code below does not work but it show you a example of hat I want to do.
Code:
Dim apa As String
Dim ar() As String
apa = "1,2,3,4,5,6"
ar = Split(apa, ",")
MsgBox(ar)
I would like my code to search through a listbox looking for "QB". Once found display message then stop. Write now my code continues to search through the listbox after. How can i change the way that i am searching the listbox?[code]....
View 1 RepliesI have this For Next Loop with a Delay that runs but it stops running till I hit OK on the MsgBox. what is the best way to do a task x times with x delay but not wait for MsgBox. [code]...
View 9 RepliesI have the following save function shown below, when called some tables get updated. Before fields are updated specifically to TblOracleNos what I want to do is when the text in TxtOracleNo has been changed and the save function called a MsgBox pops saying "Oracle number has been changed".
Public Sub Save()
Dim conn As SqlConnection = GetDbConnection()
Dim query As String
Dim cmd As New SqlCommand
If TxtNumPats.Text >= "1" Then
[Code] .....
i don't know how to display NO RECORD FOUND in msgbox..
here is my codes
Private Sub btngo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btngo.Click
open_con()
[Code].....
I have an array I know is getting initial values. I need to be able to see it's results visually like a msgbox. That will be the official output.
Sub SaveDestFile()
Dim StaffCode As String
Dim MyRec As String
Dim Duration As String
Dim FlagMe As String
[Code] ....
I'm having trouble with this
[Code]...
This code works fine for colllecting the the data and displaying it in the ListBox1. But then I want to display all the entries that are in the ListBox1 to a TextBox or MsgBox but I'm having trouble.
i have a Dataset command (DELETE FROM TABLE Where Name =@name)On my winform i have a Delete button that it deletes the rows, next i want to display the number of rows deleted to a msgbox, what i get now is 0this is my code:
Me.NetworkErrorsTableAdapter.Del(par)
MsgBox(" " & Me.NetworkErrorsTableAdapter.Del(par).ToString & " records deleted ")
I'm stuck! i'm trying to read a txt file with the data as below:
LEE
JOSH
JOSH
[Code]....
the txt file is updating all the time. So, i like to read this file and then display in msgbox the name that is most duplicated. In this case the MsgBox will show JOSH.
So I want when you click Button1, it displays MsgBox ("Hello"), when you click again, it displays Msgbox("World"). Then it all starts Hello "world hello world" etc.
View 5 RepliesI'm basically reading a memory address of Notepad using a module I got from a example... Then I'm displaying the text value of the memory address in a MsgBox. Everything goes well, I'm able to retrieve the text value and everything, but this happens.Lets say the value of the memory address is "Notepad". When the MsgBox comes up, it comes up a lot of times, displaying it like this...
1st MsgBox displays "N"
2nd MsgBox displays "No"
3rd "Not"
4th "Note"
and so on...
Here's my code, Module first, then Form1 code.
Module1.vb
Module
Module1
Private
Declare
Function
[Code] .....
I have a datagridview and in the _CellValidating event I am checking a cell to make sure it is filled in. If it is not, I want to stop editing, display a msgbox, and highlight the particular cell. Here is my code :
If e.ColumnIndex = 2 Then
If e.FormattedValue = "" Then
If Me.dgvFish.IsCurrentCellDirty Then
MsgBox("Sample Number is a required field.")
[code]....
For some reason, I can't get the cell's backcolor to be filled in.
I have a code which runs a check. User inputs values into textboxes in inputform, then runs the check, and the msgbox is displayed. if msg is yes then program continues, else I want it to return to the input for to change values in textboxes. How can I do that?
Below is the code.
If (optanodespacing > 300) Then
optanodespacing = 300
Dim answerspc As Integer = MsgBox("Anode Spacing Must NOT Exceed 300m,
[CODE]...
I'm using VB.net 2005, .net framework 2.0
I'm currently having a form that has a button starting a long process, with feedback into another windows textbox (call frmProcessLog).
I'm using a Background worker to laucnh the process, upgrade the status of the process and display feedback on the frmProcessLog textbox, and to know when the thread process ended up, (from the cancel button, from an error or normal termination).
the main thread process has some msgbox in it, asking questions to the operator (yes/no/cancel).
I've added the msgboxstyle.systemmodal to the msgbox call which works "ok" excpet if the operator decide to ignore the showing message box and click the cancel button on the frmProcessLog form, which is still clickable even though I supplied "systemModal" to the msgbox. this makes the msgbox hidden behind the frmProcesslog form and the process can still continue.
If I close my frmProcessLog form, I will see the previously msgbox behind it and If I end up click one of the button it will end up at an application error because the thread that called it is not existing anymore.
So I would like that the msgbox to be launched from the thread making it as if it was launched from my frmProcessLog window in a modal way.
if its possible to have a msgbox cleared without having the user do it manually? what would be my best option here?
View 8 Replies