VS 2008 - Try - Catch Statements ?
Aug 31, 2009Explain what these do and how you would use them?
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Program That Will Generate A Pattern Using Do While / If Else Statements / Do Until Statements
Oct 11, 2009Can someone give me a site to a tutorial that will help me write a program that will generate a pattern using do while, if else statements,and do until statements. I have been using google but I can't find anything. I need to generate patterns a certain size 6 by 6 or similar such as something like a checkerboard but where the ^ symbols is there a suppose to be a blank space..
View 3 RepliesError - Catch Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception'
Mar 25, 2011I have a program in VB.Net that receives mails from Outlook, extracts attachments and inserts the attachments into a table through a query. I would like to put the query/queries in a Try/Catch block, but cannot do so as Outlook exceptions cannot be caught, and it gives me an error, and unless I put a very specific exception, I cannot catch it. Is there a workaround?
Edit:
Try
Catch ex As Exception
End Try
Exception is underlined and when I hover on it, it says: "Catch cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not in 'System.Exception' or a class that inherits from 'System.Exception'". This is affecting all my other code which I'd like to put into a Try/Catch block.
Restructure Try / Catch To Eliminate Error On Myreader.close Command In Catch Part?
Jun 19, 2012The following code causes a "Warning" that Variable is used before value assigned.How do I restructure this Try/catch to eliminate error on the myreader.close command in the Catch part? Code appears to work fine but I dont like Warnings. [code]
View 8 RepliesButton_click Event Will Not Stop Execute After Error Catch Using Try - Catch Statement
Apr 1, 2011i 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 RepliesNested Try...Catches - If An Exception Occurs In The 2nd Sub's Try...Catch, Which Catch Gets Excecuted?
Mar 4, 2009I have this scenario: in a Sub I have a Try...Catch statement.Within that Try..Catch I call another sub.In that 2nd sub is also a Try...Catch.(see below for example).Now if an exception occurs in the 2nd sub's Try...Catch, which Catch gets excecuted? The 2nd one, the 1st one or both?
Private Sub sub1()
Try
..do stuff[code].....
If Throw An Exception From Within A Catch, Does The Finally (from The Catch) Still Execute
Jun 2, 2009If I throw an exception from within a catch, does the finally (from the catch) still execute? i.e.
Try
..some code with an exception in it...
catch ex as Exception
throw new SpecialException("blah blah" & ex.Message, ex)
[code]....
Catch Log4net Exceptions / Use Try / Catch Approach
Jan 23, 2012I need to catch log4net exceptions (its own exceptions not app exceptions logged by it). I wish there's a way of doing it this way: [code] I have this code implemented and there's no errors in compilation but i force log4net to have an error (pointing to a non existing database in the config file) and nothing is threw.I've tried the listener aproach: [code] and it's writing the errors to log4net.txt, the forced ones i mean.This last aproach has a couple of drawbacks: it won't append every error to the file, if the error is the same it doesn't write it, i can't get the listener to write every error to that file, only one (I don't know how to fully configure the trace listener, it might be that). Thus it won't append the date and hour to every line wich is a necesity for me. Finally i can't give structure to it (xml). Even if the listener work i need to use the try/catch aproach, since i'm using ExceptionHandling from Enterprise library to log the errors in my app.
View 1 RepliesHTMLelements And If Statements Vb 2008?
Feb 27, 2010Well I hope this is the right section since I can't figure out where to post for vb 2008 express. Anyway I'm trying to get my program to search for a html element and if it finds it, do something. I just started programming vb yesturday and have little programming knowledge. I'm learning as I go and thats how I learn.
Private Sub Connect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Connect.Click
WebBrowser1.Navigate(AdressBox.Text)
Dim Element As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName(tagName:="login")
' If (Element) Then
' End If
End Sub
I keep getting a null reference error no matter what combinations I try. I want it to search for the login name and if there is one then do the login procedure I have setup. I want to do this for a image later but I need to learn this first. I know that this tag name = login and is NOT a id.
Multiple Do Until Statements In VB 2008?
Mar 2, 2010I need to write a do until statement. 2 of them actually. 1st one records all of the income and then one that records all of the expense. Then they need to be add to figure a profit or a loss.
View 12 RepliesVS 2008 How To Import Sql Statements
Nov 6, 2009I have an export file containing the sql code to create and populate a table of a database. There is a way (using the visual studio 2008 using the data connection on the server explorer) to pass to the created table comething like this: [code]I have seen that this is possible only if i submit just one value like this:INSERT INTO province (id,codice_regione,codice,nome,sigla) VALUES(1, 1, 1, 'Torino', 'TO');But i would like to create all the record of the table running the sql script just one... i have a table of over 50000 record..
View 2 RepliesVS 2008 Using Properties Set And Get Statements?
Jan 15, 2010I'm very new to programming and have the following question:When using the set statement in properties we have to declare a variable outside the property which holds the data for the get statement. How can i make this variable not visible to other classes. In the example below i don't want other classes to be able to see "m_area, a and b" when an instance of Ellipse is created.
[Code]...
VS 2008 Where Put Import Statements
Mar 26, 2009Incredibly newbish question, I know. Up to now, I've only made simple applications that do not require adding import statements
View 9 RepliesVS 2008 - Two Nested For Loops And If Statements
Apr 1, 2009I want to write two nested loops and inside them "two if statements" when I write an Else statement which has a messagebox saying that ID is not found.. it repeated many times depending on the for loops. I only want to be displayed once !!! but when I wrote my code like this (using exit sub), the message appears when the condition is right and appears when the condition is wrong. I tried to move this statement somewhere else but still I have problems with it.
With EMPDataSet
For I = 0 To .Personal.Rows.Count - 1
For j = 0 To .Work.Rows.Count - 1
If EMP_CPR = .Personal.Rows(I).Item("CPR") Then
txtName.Text = .Personal.Rows(I).Item("Full_Name")
[Code] .....
VS 2008 - Using Nested IF Statements In A SQL Query?
Jan 13, 2011I have a question about using nested IF statements in a SQL query. I have a select statement that calculates a semester grade -- Dim sqlStr As String = "SELECT 'XXX-XX-' + right(socSecNumber,4) As [Student SSN], Round((firstExam + secondExam +(2*finalExam))/4, 0) AS [Semester Average] FROM Grades that I am displaying the results in a datagridview. I can successfully display the masked social security number and the Semester Average but I also need to convert the Semester Average to a letter grade to display in a newly created column for Grade. Can this somehow be done with nested If or Case statements within the SQL statement or is there a way to pass the Semester Average information as a variable to a nested vb If statement? Basically, I am needing to know how to display the letter grade to the datagridview using this criteria:
[code]...
VS 2008 Arrays And Update Statements?
Jul 28, 2011I am working on arrays but i need to do a sql update statement. Contents of the array are also part a primary key in my table.How do I do an update using the array for example if my array is room names and my other table values are start date, end date and campus ID.
View 5 RepliesVS 2008 Difference Between Cases And If Statements?
Jun 15, 2009what exactly the difference between using cases and if statements are.
View 4 RepliesInsert Statements Fail When Run Against SQL Server 2008?
Jan 28, 2012I have to deploy my VB.NET application developed in VB.NET and Visual Studio 2005. The customer is using SQL Server 2008, while the application is being built against SQL Server 2000.I received the following error against SQL Server 2008:An explicit value for identity column in 'Outgoing_Invoice' table can only be specified when column list is used and Identity Insert is ON.Here is my query for inserting data in two tables:
Dim cmd1 As New SqlCommand("Insert into Stock values(@invoice_no, @gate_pass, @exp_no, @clm_no, @category, @item_name, @weight, @units_case, 0, 0, @crtns_removed, @pieces_removed, 0, 0, @date_added, @date_removed, @inc_total_price, @out_total_price,[code]....
The error message is shows at cmd1.executenonquery. Both these tables Stock and Outgoing_Invoice have an identity column labelled serial before @invoice.The problem only arose when insert was tried on SQL Server 2008. When run against SQL Server 2000, it works as expected.What can be the possible reason for this issue and how can it be resolved?
VS 2008 Have Multiple IF Statements In A Single Button
Mar 10, 2011I am just starting to learn the visual basic language so i am trying to make a simple application where a user can put in it's first and last name or else the application exists.
I manage to do this fine untill i get to the point of ending one if statement and starting another in the same button..
(in the form i have button1, button2, label1, label2. Button2 is only a "quit" button)
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
What happens when i run this is that i can put in the first name but then when i click yes the application closes.
VS 2008 Multiple OleDbDataAdapter Update Statements
Apr 13, 2012I need to update more than one DataAdapters, so I used the
Dim sqlcmdbldUser As New OleDbCommandBuilder(dtaadpUser)
Dim sqlcmdbldPoints As New OleDbCommandBuilder(dtaadpPoints)
But only one of them works, the second one brings up errors if I try to update the DataAdapter. Is there a way of using and updating multiple data adapters?
VS 2008 Using Parametrized Queries With Multiple SQL Statements
Jun 25, 2009There is not a VB.net database forum, and there is a HUGE difference (unfortunately) between ADO and ADO.net. I have a connection to a MS SQL database, which I understand is capable of handling multiple SQL statements in one Execution, ie
Using cmdExe As New System.Data.SqlClient.SqlCommand
sSQL = "Delete * from mytable where UniqueID=123;Insert into mytable (UniqueID, Field) values (123, 'something')"
.CommandText = strSingleSQLLine
[Code]....
There are two questions here actually...can I add the parameters before setting the command text, and do I have to add the same parameter over and over again?
Error 68 'Catch' Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception' Because It Is Not 'System.Exception'
Feb 12, 2010I am using VB.NET 2005 to create a Windows forms application. I have a procedure named SendMail that creates an instance of Outlook.Application, to send an email from my application. I found the code on this forum, I think.The procedure works fine, but I can't use error handling with it.I call the procedure from a button click event. I put the procedure call in a try/catch block, and the application won't build, with the following error.
Error 68 'Catch' cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. C:datadevdmtiQTSQTSv7_1_20100212wQTSQTSReportsCriteria
pt_frmReportViewer.vb 43 21 QTS
Here is the code:
Sub SendMail(ByVal sFile As String)
' Create an Outlook application.
Dim oApp As Outlook._Application
[code]....
VS 2008 Radio Buttons And Select Case Statements
May 26, 2010how to associate a select case statement with, which point to four Function procedures, to four radio buttons that are used to +, -, *, and / two simple fractions in a fractions calculator. This is a class assignment for which I have already been graded. I used an If...ElseIf statment and it worked perfectly. Now I am trying to utilize the Case Statments with Function Procedures to do the same thing. I do not get graded for this, but I was told to research it an find an answer. My current code is listed below.
[Code]...
[2008] Dynamic LINQ Queries And Select Statements?
Jun 5, 2008I've recently ported my website from 2005 to 2008, and I'm using LINQ Queries to implement a search. The issue is that none of the fields are mandatory, so I've had to implement a dynamic LINQ Query (sic?). Here's the relevant code -
Public Function searchQuery(ByVal titleType As String, ByVal titleName As String, _
ByVal configMgr As String, ByVal lifecycle As String, _
ByVal CIType As String, ByVal recordsPerPage As String) As IEnumerable(Of
[code].....
VS 2008 Add Button Control In DataGridView Based On The Case Statements
Oct 21, 2010I am working on Datagridview. My task is adding buttons in the Datagridview table based on the case statements. Like In the Present table i have one column called "CategoryDescription". In this column, values are like 3101,3102, 3103........Here 31 is the common. and like 3201,3202,3203......Here 32 is the common. Like there are so many common values are there. So where ever the common values will come there i have to add one button in the Same column.
So Finally my conclsion is at Satrting 3101 and starting 3201,3301,3401.. i have to add one button control 3101 and add button control on 3201 and add button control on 3301.
If Statements Inside If Statements?
Mar 14, 2012I am trying to figure out how to do this:
if (phrase = hello) then
"say hello"
if (phrase = how are you?) then
[CODE]...
So basically, I want it to work like a timeline. If I say hello, then it will respond and move onto the next if statement. Get it?
Here is the code I have now:
If phrase.Result.Text = "hello" Then
synth.Speak("Hello to you too")
If phrase.Result.Text.Contains("How are you") Then
[CODE]...
VS 2008 How To Catch Changes In Form
May 25, 2011I have a form with many textboxes. When the user exit, I ask him if he wants to save it, and if so, I save all data into text (INI) file.I'm looking for best practices how to know if the user changed something with any of textboxes?I know I can use 'change' event for each textbox, and use some global boolean variable to catch it. But since I have dozens of textboxes,I'd like to know if there is any better way?
View 1 Replies.net - Catch Ex.innerexception In The Smtpclass 2008?
Mar 15, 2011am trying to catch the inner exception for the smtpclass with this code below, but it give another error saying the innerexception is not defined
Try
mail.To.Add(lstRecipients(i))
Try
[code].....
2008 Using/End Using Connection Object And Try/catch?
Feb 5, 2010a) If the function returns true OR false will utilising the 'Using/End Using connection' statement close the connection cleanly? b) Is the 'Return TRUE statement' suitable placed to allow an error to occur and be raised returning a value of FALSE?
Public function doSomething () as boolean
Using conn As New SqlConnection(My.Settings.SQLConn)
Try
[code].....
VS 2008 : Regex To Catch On First Instance?
Aug 11, 2011Hi, i have a regex code to get the time from a webbrowser but there is more than 1 time all in the same format.I need it to get the first time it catches, atm it gets the last time not the first?
Dim Regex As New Regex("d+:d+( [AP]M)")
Dim Matches As MatchCollection = Regex.Matches(WebBrowser1.DocumentText)
For Each Match As Match In Matches
TextBox1.Text = (Match.ToString)
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