I need help with a month calendar. I want to write an If statement in a button_click event. I need an If statement that says if one date is selected then a label becomes visible. I cannot figure it out.
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I need to declare a directory, create a file in the form_load event. I need to write the value from an array in the file when during Button_click event Is there any way to use the object declared in the form_load to be used in the Button_click event????
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i have problem when i click a ADD button, there is one null value in the textbox .. so the try catch statemnt is to catch that null value error but after that the catch is success but the button click never stop excute the statemnt till the end of the button event.
View 6 RepliesI'm using Visual Basic 2010 express, and I can't seem to be able to figure out how to make a button_click event select all of the checkboxes in a CheckedListBox. For example, I created a checkedlistbox with about 34 entries in it, all of which can be checked. So I decided, to make it easier, I would just make a Button with "Select All" on it, but I don't know what kind of button_click event would select all of the items withing my checkedlistbox.
View 2 RepliesIn my project, I am trying to make a button_click event occur when the text of one of my labels is changed.I am using the following code,
Code:
Private Sub Total_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Total.TextChanged
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I have a class, called myClass.vb. I have a sub in it. this sub has a string variable, which has got some value. Now, i want this value to be transferred to the button_click event of a very seperate form called myForm.vb.
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Public Class Form1
Dim sql As String
Dim conn As New OleDb.OleDbConnection
Dim da As New OleDb.OleDbDataAdapter
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The problem, The INSERT statement works fine in the form load but not in the button click event?
i have a question about how to write an if else statement. I was experimenting with vb 2008 and wrote a program that adds few numbers together and displays the result in textboxes. for example i input the following 4 number in 4 different textboxes
14 3 1 5
and the result i get is 15 8. I was trying to simulate adding times together(eg 14:03 + 1:05 = 15:05). Everything seems to be working fine but how can i place "0" if the output for the minutes is less that 10? eg instead of having 8 in the textbox i would like to have 08.
I need to write an sql statement that has an IF condition in it
This is my current statment:
"SELECT * From History Where DelNoteNum = " & delNote & " ORDER BY StockLoc"
What I need to do though is if the StockLoc > 4000 then group by ProductCode. I definatly only need to do this if the stock location is greater than 4000 though.
How do i programmatically execute a SQL statement using datasets?
View 6 RepliesWrite the pseudo-code for an If..Then statement that determines the apropriate tax rate for a given annual income level using the guide below:
Under $20,000 = 2% income tax
$20,000 - $50,000 = 5%
$50,001 - $75,000 = 10%
This is what i wrote:
If Annual Income is < $20,000 Then
income tax = 2%
If Annual Income is $20,000<= $50,000 Then
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If I have the following structure:[code]How can I select it in a conditional like this? [code]I know that myUsers.Contains(.ID = "1") is totally wrong, but I am curious how to do something like that?Is it possible? Is this a job for LINQ?
View 3 RepliesIm trying to figure how to use the IF, ELSE statements OR the Select Case statement to write this program.I'm using Visual Studio 2010. The program is suppose to allow the user to input their weight in a text box and from group box 1 the select whether theyre male or female using the radios and they select inactive or active from group box two and the calculate but will determine how many calories they should intake based on the criteria below.
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Table 1 has fields: A, B, C, Table 2, there are fields: D, E, F, Table 3 has fields: G, H, I
Connect the condition that A = D and F = I
provide a look at Table A left join B, C of the SQL statement
button2_click an array or string instead
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
MsgBox("")
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How do I make a button_click end a process? I tried process.stop and tskill but neither of those worked. more specifically, i want a button to end explorer.exe.
View 5 RepliesHow to open a picture that would be a Embedded Resource when a button is clicked? Like...Click the button, Then the picture comes up? And it would be better if It could open the picture up IN the program itself rather then extracting it and running it if you get what I mean.
View 3 RepliesI am novice so my questions may be very simple or very stupid, please advice me anyway.I just need an if statement with a key press, so all I want to type in code is - if I press a letter on the keyboard ("a" for example) I will run the event I need in that if. So how would you write this if statement.
View 5 RepliesI started out with VB.NET but now mostly do C#. I never really got to grips with events in VB. I'm trying to translate an old VB.NET program (from 2002) into C#. I've dealt with everything apart from statements such as these:
Public Event UpgradeProgress(ByVal strProgressString As String, _
ByVal strCurrentFile As String, ByVal intProgressPercent As Integer, _
ByVal lngTimeRemaining As Long, ByRef blnCancel As Boolean)
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How to write a if else statement to check if the number user enter follow within a range.
View 5 Repliesi m working on Student Database Management system, I have used button s for insertion, deletion, and update. Insert and delete button is working but update's click gives syntax error: Try
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I have three tables set up in a MySQL database called "event", "status" and "user". (as shown below:
EVENT TABLE (below)
STATUS TABLE (below)
USER TABLE (below)
and when I get data from the event table I use the SQL query statement below to bind the persons first and last names together as one variable called "name" and then bind that name to the respective user_id; and so on. However when I make changes to the event table it doesn't show the changes I've made. I'm certain it has something to do with the way I'm retrieving the data.
SELECT CONCAT(u.lastname, ', ', u.firstname) AS Name
, s.message AS Message
, DATE_FORMAT(e.timestamp,'%b %d %Y - %r') AS DateTime[code].....
I'm trying to make a show/hide button. I want the show hide button to be attached to an object on a form. Right now I just have separate show/hide buttons set the 'visible' property to true/false respectively. I want to code something that will consolidate the two properties. But I don't know how to code an if statement into an event, in this case the click event.
I'm thinking I'd have to do something like create an array (which I'd have to read a tutorial on first) that would hold two numbers. So, if the object on my forum's default visible property is true then if the button was clicked once it would be set to false (1) and clicked again it would be true (2). So, the array would only remember two values (1 and 2) and I'd have to create something else that would remember the previous value (say, 2) and than get the array to spit out the only other value (say, 1) it holds. Then finally strip the value the array spit out and have it go through some kind of if statement that would set the true/false value.
Without posting the exact code I'd need to pull it off, how would I go about doing this? Am I on the right track, or is there a simpler way? I'm new to programming.
I get this error:
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I have a button on a web page that I just need a little help with some extra code. I think I need a TRY, CATCH statement?, this is what I have so far: I have a simple web page that has a button which at the moment when pressed enables the user to add data to a DB table via a stored procedure.Once this button is pressed a pop up message box is displayed to let the user know the data has been passed. The user then needs to press the 'OK' button within this message box which then directs them to the home page of the site. This works fine.
The code for this is here:
Protected Sub btnAddRawData_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddRawData.Click
'database conn, this is linked to the web config file .AppSettings
Using dbconnection As New SqlConnection(ConfigurationManager.AppSettings("dbconnection"))
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As I don't want the user to enter duplicate records in the database (This could be done by the user navigating back to the page where the btnAddRawData_Click is located and pressing it again.), I have created a UNIQUE INDEX named 'DupRecords' to stop the user from commiting this data more than once that day.When I run the web page now I get the following message in my browser:
Cannot insert duplicate key row in object 'dbo.GasRawData' with unique index 'DupRecords'.The statement has been terminated.The solution I think, is to add a TRY, CATCH statement into the btnAddRawData_Click code.
Dim i As Integer
If Label1.Text = "" Then
i = BPORes_csvDataGridView.CurrentRow.Index
Label1.Text = BPORes_csvDataGridView.Item(0, i).Value
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I have this code in the click event for a button I want to be able to select a row in my datagridview then Hit the ok button and have it populate to text box1 if textbox1 is already filled then i want to go to textbox2 and so on, (total of 6) So far if extbox1 is empty "" and i click ok button it populates, when i click ok button again to textbox2 does not populate.
how to write below in vb.net??
Me.connection = New RAPI
connection.ActiveSync.Active += new ActiveHandler(ActiveSyncActive);
Private Sub ActiveSyncActive()
..................
End Sub
In a windows form application I have:
Private Sub ReadData(ByVal CodeId as String)'...reads SQL Table End Sub
Private Sub FileSystemWatcher_Created(ByVal Sender as Object, ByVal e as System.IO.FileSystemEventArgs)
'do some stuff 'Need CallBack to ReadData
tell way to get: KEYPRESS event in the cells of DataGrid ?If user enters numeric value in Quantity, it would calculate & give result in Rate.How can I fire KEYPRESS event in cell
View 3 RepliesCannot Consistently and Reliably Write to a Custom Event Log from DotNet
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