What is the correct syntax to go to the next sequence in a loop if certain conditions are met bypassing the contents.
I am using goto and inserting a line number which is probably not the best way.
I.E. My syntax:
For i = 0 to 100
If i = myvariable goto 100
Functions to be performed
[Code]....
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
So I have a few variables in an array a I want to compare another variable to each of them, if it is the same do something, AND STOP THE FOR LOOP. else carry on the for loop. So...
for i = 0 to 4
if variable = a(i) then
do some stuff
[code]....
how do i end the for loop from within an if statement that is in the for loop
I have a list of string in an array. I'm loop through those strings and if the text of a combo box matches one of those strings, I want a message to appear. If they don't match, I want a method to be executed.
[CODE...]
The messagebox appears, but the method is still executed. Which means it isn't stopping when it finds the match. I tried exiting the loop, but it still doesn't work.
I'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.
My 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 RepliesI 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
I know I am missing the obvious. I would like a label to show how many cycles in loop are left.
[Code]...
I am constructing a program, i am new to Visual Basic, but i have past programming experience. I was wondering if anyone knew how to form a loop that could...lets say calculate the answer when two numbers are added together,and it would repeat this thousands of times, etc. And if there is a way, would it be possible to calculate the time taken to complete this loop.
View 5 Repliesi mean for e.g., numbers are between 1 and 100 .i want to show messagebox for each number as text for example "One" for 1.
View 1 RepliesI have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.
vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)
[code].....
I had posted this question before but didn't get the right answer -here's my code again with the if condition.
Dim provider As CultureInfo = CultureInfo.InvariantCulture
Dim a1 As DateTime = Nothing
If date1.selectedvalue isnot nothing Then
[code]....
I have a problem. I have been programming an activation type of security protection for my software but i ran into problems when i try to generate an alphanumeric key with conditions. i cant seem to be able to make the keys to be valid with the condition. Basically i can get the 25 keys but all of them seem to be returning 1 (ones) instead of 0 (zero which what i want. below is my sample code may be someone can tell me what i am doing
[Code]...
I have the following code which gives me an error at run time. The problem is when TxtSearch.Text - is not an integer a message box should be prompted saying- Only a numeric value is allowed in this field, otherwise continue with the sub.
Private Sub ButtonSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonSearch.Click
Dim query As String
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The error I receive is showing ''saved_prac = cmd.ExecuteScalar()''..
First it brings the Message box - Only a numeric value is allowed in this field. When I OK it, then it brings another message box "error converting data type varchar to numeric". When you click OK the application crashes...
When I am click a button every time adding +1 in a textbox but I want to give condition that it will add until the desite is 8 I am using the following code
If e.KeyCode = Keys.Down Then
textbox1.text = Val(textbox1.tex)+ 1
End If
I'm trying to read data from database.
If objReader.Read = True Then
If objReader("cell") IsNot DBNull.Value Then
Me.txtContact.Text = Trim(objReader("cell"))
[code]....
Problem is, no data displays if cell is empty.
my problem is that i want to put if condition on textbox for example i want if key board keypress on textbox then enter no in textbox
[Code]...
I use a worker thread to do the procedure of query and fill the datasetAnd I use 3rd party component called DevExpress XtraGrid: GridControl to view the query outputI don't forget to use invoke and delegate to set the GridControl.datasourceOn Timer.Tick(), the thread is started and the procedure is called user has scrolled down the GridControl, even only one scroll value instead,and then the Timer.Tick() fired, I gottwo errors randomly. Mostly aNullReferenceException error and eventually anInvalidOperationException error
************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.UpdateCellAppearance(GridCellInfo
[code].....
Scenario: I need to create a report for the auditors for an ASP.Net application. I have a program that parses the XML of the web.config files in a directory for the authorization tag and creates a report providing which users have access to which folder in the site structure. The report is shown below.
UserName, Firstname, LastName, Directory, Roles, Access,
LastLoginDate
Problem: As you can see from the report some directories (the middle column with GISMO in it) show up twice, with both allow and deny for a user. I am wondering if there is a way to group the results in such a way that if there is a row that has allow for a directory then the deny's are not shown but otherwise they are.
Alternatively if this can be manipulated in VB.net/C# that is also an option. It comes back there and is pumped into an Excel spreadsheet.Edit: I should have explained better. I still need the deny rows to show if the user isn't allowed in the directory. But if they are allowed then there is no point showing the deny rows.
I am developing an application to my official use. In which I have one combo box for selecting the customerName.When I select the custName from the combobox I want to retrieve data from a particular field of a table and sum it within a selected date value. i.e: When the user selects a custName from the combobox the field within the date value should be summed up and grouped by custName. I think it is possible but I dont know how it is to be done.
View 10 RepliesI think im going mad but can some show me what im missing, it must be some stupidly simple i just cant see the wood for the trees.BOTH side of this if then else statement are being executed?
Ive tried commenting out the true side and moving the condition to a seperate variable with the same result. However if i explicitly set the condition to 1=0 or 1=1 then the if then statement is operating as i would expect. i.e. only executing one side of the equation...
The only time ive seen this sort of thing is when the compiler has crashed and is no longer compiling (without visible indication that its not) but ive restarted studio with the same results, ive cleaned the solution, built and rebuilt with no change?
Dim dset As DataSet = New DataSet
If (CboCustomers.SelectedValue IsNot Nothing) AndAlso (CboCustomers.SelectedValue <> "") Then
Dim Sql As String = "Select sal.SalesOrderNo As SalesOrder,cus.CustomerName,has.SerialNo,
[code]....
I have one datagridview with first column may contain checkbox or could be empty space depending upon data in second column. How can I put checkbox or keep it empty in first column whever required ? Checkbox column puts check box in all cells of first column.
View 1 RepliesIn aspx page:
if (<%= Not Me.ThisVisa.PassportExpirationDate.IsNull %>){
Returns error:Microsoft JScript runtime error: 'True' is undefined
I tried this:
if ("<%= Me.ThisVisa.PassportExpirationDate.IsNull.ToString %>" != "True"){
..but I get a compile time error:
Error 5 Option Strict On disallows implicit conversions from 'String' to 'Long'
I've got this function which converts wav files to mp3. I call this from my button_click handle. The thing is, when the conversion is started, the rest of the code in the button_click handler continue, while the conversion is happening in a different thread. Now, I need the rest of the code in the button_click handle so continue to try until a boolean is true, so that I know that the conversion is done before the rest of the code continues. I've tried using Do While but it didn't seem to do the trick. Perhaps it's just me though..
View 2 Repliesas the title says , for example i want to say if the first letter in textbox1 is "d" then do a specific command ,so what is the code for this ?
View 2 RepliesI have form on VB2008 and Mysql as Database which have 24 textfields on a form.I want to impose certain condition that when ever user adds/updates/modifies data into database for example You may have entered text in a numeric fied or a number that is larger than the fieldsize setting permitts. if violates message box should appear with Invalid entries
View 5 RepliesSo I have case statements grouped together here, but I have a few case statements that need extra decision based on a second variable after the original case is confirmed. [code] And then just have 3 case statements instead of one but the code wouldn't look ugly. By the way Condition is declared instead the same select.Is there any reason why I shouldn't use this if it does work?
View 3 RepliesHow Can I Row Filter with a condtion on colam where Coloum1 = > 0
View 2 RepliesI have a String variable in this page named "a".I wanted the scenario to be.When the page is started "a" will be null.But when the user selected an entry from the DetailView Control "a" will become "have".The following is my code. But i keep getting "a" = null even though i have selected an entry from the detailView control.[code]
View 2 RepliesMy problem consist in show values into a cell of a DGV control, for example:MySQL Table:
ID - Name - Price - Type
1 Mouse Pad 2.85$ - a
2 Keyboard 10.50$ - a
[code].....