Test VB Code For Null Value
Jan 28, 2010how to test vb code for null values. I tried this but it does not seem to work:[CODE...]
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Test For Null Value Of A Field In An ADO Recordset?
Oct 24, 2010Question is: How to test for null value of a field in an ADO recordset.Using Visual Studio 2010 Ultimate - VB.NET
ADO Connection to ODBC database
I am working with a table that contains about 10,000 records of which I need to do additional processing on about 1500. The records I need to process are qualified by the field'Cataloged' = True. The problem I have is the table allows for True, False or Null values (I have no direct control of the table to change from allowing Null) for the field I need to test.I run into errors when the value of the field is Null and need to figure out how to determine its Null state prior to trying to qualify the field as True or False value to prevent the errors.
DB/Reporting :: Stored Procedure Test For Null/empty Uniqueidentifier
Sep 6, 2008I have a stored procedure (SQL Server Express) that returns a count of records:
SELECT COUNT(AdminUserID) AS CountEm
FROM Licenses
WHERE (AdminUserID = @AdminUserID);
Table "Licenses" has a field "CompanyID" which is a uniqueidentifier.
I need to add a clause to the WHERE to exclude records from the count where "CompanyID" is null/empty.
In VB code I'd do this with "If Not (TheCompanyID.Equals(Guid.Empty)) Then"
How would I do this in a stored procedure?
Code To Test Webcam If It's On Or Off?
Jun 10, 2009Is there any code to test the webcam if it's on or off ?. i mean, i need a code that telling me if my webcam is on.
View 2 RepliesIDE :: Use The Immediate Screen To Test Code?
Feb 2, 2012In VB2010, is there a way to use the Immediate Screen to test code such as:
? InStr("AString","ring")
This was convenient in VB6 which would have printed to the screen a "4".
How To Call In Objects From Other Class With All Code To Test
Dec 7, 2011I'm struggling with unit testing in my website.So far I have the NUnit framework imported with;[code]How do I call in objects from the other class with all my code to test?If anyone could give me an example of how to test textbox validation,
View 1 RepliesTest A Substring As ASCII Code Or As Integer?
Jan 25, 2010so that I can sort Arrays of Structures? What I'm asking is how do I convert a String.Substring(index = 0, length = 1) to a Number that is ASCII integer 0 - 127 ASCII will this module work?
Public Function IsInteger(ByVal strValue1 As String, ByVal strValue2 As String) As Boolean
' A Sort Function
If strValue1 >= strValue2 Then
Return True
[code]....
how do I convert the string to Binary 0 - 127 ASCII code...
.net - Unit Test Fails, Tested Code Works?
Aug 14, 2009I have a simple unit test which tests that a validation function picks up a specific validation issue. The validation item returns a simple object with Item & Message properties. I've written a unit test for this function but this always fails even though I know the function works as expected.
<TestMethod()> Public Sub ContractNote_ValidateForManualInputTest_TradeOrderValueComparison()
'Can't get this test to work even though validation works!
Dim CN As ContractNote = New ContractNote
Dim Trade As New TradeOrder
[code].....
I've implemented IComparable on ValidationItem (I have a separate unit test which confirms this works). Am I Using CollectionAssert correctly?
Multiple Times To Test It Out Sometimes Adding Code And/or Changing It?
Jun 6, 2012I have written a program and have used it (in debug mode) multiple times to test it out sometimes adding code and/or changing it. After a while any code I wrote or new buttons or features I added to the form would not appear while debugging. I don't know what circumstances led to this.
The only solution I found was to rewrite my code from scratch, however, the problem came back after a while. I don't know what is going on and I can't move on without starting all over again.
Global Variable - Test And Production Code In A Case Statement
Jun 3, 2009I have an application that contains both test code and production code. The test code points to the test files on the local machine while production is located on the server. I comment out the production code when testing. To save some time I figured I would create a Global Variable integer called pTest and encase the test and production code in a Case statement so that if I set pTest=1 then the test code will run and if pTest=0 then production code will run.
[code]...
Argument Not Specified For Parameter 'test' Of 'Public Shared Function TestThis(test As String)'?
Sep 25, 2010I don't understand the error, Argument not specified for parameter 'test' of 'Public Shared Function TestThis(test As String)'.
Partial Public Class Form1
Shared Sub ReceiveCallback(ByVal ar As IAsyncResult)
Form1.Invoke(TestThis, New Object(){"test"}) 'error
[code].....
Null Pointer Exception From VB Code?
May 4, 2009I am using Windows Vista x64 + VSTS 2008. I am debugging the sample program from the following URL (associated sample code for this article),
http://www.codeproject.com/KB/audio-video/CaptureScreenAsVideo.aspx?display=PrintAll&fid=129831&df=90&mpp=25&noise=3&sort=Position&view=Quick&fr=101&select=1160633
But I met with null pointer exception when press the write to file button, here is my screen snapshot.
http://tinypic.com/view.php?pic=14cbfop&s=5
[Code]...
Combobox - Having Null Reference Exception In Code?
Jan 22, 2012I'm using vb.net and sql server 2000 for developing my application....The problem i'm having is the Null Reference Exception on the Following line of code:
Dim cmd5 As New SqlCommand("select crtns_removed, pieces_removed, scheme from Outgoing_Invoice where invoice_no = '" & Me.ComboBox5.SelectedItem.ToString.Trim & "' And category = '" & Me.ComboBox1.SelectedItem.ToString.Trim & "' and item_name = '" &
[code].....
Handle Null Values On One Line Of Code?
Mar 30, 2011I need to round and print a price like below, but this does not handle null values.How can I handle null values on one line of code? DBRSet is an SQLDataReader and the price is money
<%= Math.Round(DBRSet("price"))%>
I have about 200 .aspx pages of this so I could also use some tips on how to change these in an easy way? Can I do a search and replace with a reg-exp or something like that?
Null Reference Code In My School Project
Jan 15, 2011I am basically 4 weeks into my first ever programming class and we are working on a project for the game "Hangman". While I have struggled with everything for the past 3 weeks, I have finally cams across something I have no idea how to correct. I am getting a Null.Reference error in the following line of my
If Not strWordToGuess.Contains(strLetterGuessed) Then
Now this code was provided in my project files, it was dated 4/07, I am currently working in VB 8 express, I am thinking this might have something to do with it.
Code Read The Excel Cell As Null When It Contains Data?
Mar 29, 2012Using VB.Net, I am reading an Excel spreadsheet does anyone know what might cause a cell to be read as VBNull when it contains data?the cell clearly contains data. and what is extra weird is all the same cells in the rows before and after the bad one have the little green triangle in the upper left corner, indicating an error - but they all read fine the cell that reads as NULL is the cell in row 4 above
View 1 RepliesNull Error In Browser Link Clicking Code
Sep 16, 2011I'm trying to click a link in an embedded browser based on the link ID. However, I keep getting a NullReferenceException error. I have not declased anything from the code. Just dropped it in from another website. Any ideas?
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
For Each link As HtmlElement In WebBrowser1.Document.Links
If link.Id = "ctl00_mainContentArea_submissionFileListTable_ctl02_documentHyperLink" Then
WebBrowser1.Navigate(link.GetAttribute("href"))
[Code]...
Null Reference Exception Was Unhandled By User Code?
Feb 19, 2010i develop the following code in vs2005, now i just using this module in my new project @ vs 2008..But this error was araised. I cant able to fix this problem...
Private Sub DataAccess()
Dim errHandle As New ErrorHandler
Dim lobjCommon As New eCopsCommonFunctions
[code].....
Nullable Property - Set Code That Execute In The Case Of The Value Being Null
Sep 17, 2010[Code] Now the problem is that after i put this user-control in a form, I have to set a value for the Handled file. Otherwise it gives me a value cannot be null exception. Is there a way that i can set code that would execute in the case of the value being null? [Code]
View 14 RepliesVS 2008 Code Skippes Rest Of Codeblok When Value In DB Is Null
Apr 29, 2010When I debug my code I notice that some of th code below is skipped when an integer is not filled in in the DB.Example:When the value of the piece of code in bold (Aanspreektitel_ID) is null in the db the code skippes the rest of the code blok and thus not filling the values on my form.
[Code]...
Checking For NULL Dates In SSRS Custom Code Function
Feb 7, 2012I am trying to implement a function for my SSRS report which will return a color value depending on the values of three dates.
[Code]...
Checking For NULL Dates In SSRS Custom Code Function?
Jul 7, 2009I am using following code in rowdatabound fn.
Protected Sub gvwMileStone_RowDataBound(ByVal sender As System.Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
[code]...
ddlEProjectLevels is dropdownlist in edititemtemplate.Whwn i click edit in 1st row ddlEProjectLevels gets loaded with data from database.But in 2nd row dropdownlist does not contain values.Again in 3rd it gets loaded from db.Means in alternate rows,when i click edit dropdownlist(ddlEProjectLevels) doesnot load values.Can anybody help?
Getting Error In Code As Initially Array List Is Null / NullReferenceException Was Unhandled
Oct 19, 2009The code below is used to check if the application setting, an arraylist is populated or not via the count method.
When running the program fails with error "NullReferenceException was unhandled" as initially the setting (arraylist) will contain no values.In similar circumstances I would declare a new instance of the object or set value to string.empty or check if DBNull.
I know application settings have a save method but to reference/load them one is not needed.I also left the value field in the projects -> settings to be empty.[code]...
Code Is Not Detecting The Cell As Null And The Table Adapter Is Throwing The OleDb Exception?
May 25, 2011I have this piece of
Private Sub FORNECEDORESBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FORNECEDORESBindingNavigatorSaveItem.Click[code]....
The idea is to detect if the cell of the first datagrid column is null and display the message. However, the code is not detecting the cell as null and the table adapter is throwing the OleDb exception.
Reference To Test.dll But An Error Messege Was Appear A Reference To Test.dll File Could Not Be Added?
May 25, 2009[code]...
and from VB6 project I reference to Test.dll but an error messege was appear A reference to Test.dll file could not be added (If I create VB NET project and reference to file Test.dll it OK )
Write A Unit Test Assembly In C# To Test Against An Assembly Written In VB?
Sep 20, 2011Probably a dumb question, but can you write a unit test project in one language to test against another project in a different language?I'd like to translate one of our VB assemblies into C#, but want to build unit tests to verify the results. I've tried to set a unit test project up to do this, but I can't seem to access the VB code within a unit test... I can't figure out if I'm just missing/doing something stupid, or it really isn't allowed.
View 2 RepliesNull Reference Exception In Line Checking For Null?
Dec 15, 2011I have a fairly simple piece of code:
Private _PurchaseDelivery as PurchaseDelivery
Protected Overrides Sub InsertItem(ByVal index As Integer, ByVal item As PurchaseDeliveryItem)
[Code]....
Which is inside a class which overrides a custom list base. The code is occassionaly throwing an unhandled exception, System.NullReferenceException, on this line when used in production:
If _PurchaseDelivery IsNot Nothing AndAlso _PurchaseDelivery.DefaultSKUBinID.HasValue Then
DeafultSKUBinID is declared as an Integer? (Nullable Int) in the PurchaseDelivery class. I cannot see what might be causing this error, why would this be returning an error?
VS 2008 - Transaction SProc's In Code - Says That My Insertcommand's Transaction Object Is Null
Apr 29, 2009I've seen plenty of examples of transactions in the actual store procedure's SQL. But I'm wanting to do the transaction and keep track of it in code. I tried this but it says that my insertcommand's transaction object is null. How can I fix this?
vb Dim conn As SqlConnection = DBConnections.SQLServerConnection
conn.Open()
Dim params(1) As SqlParameter
[CODE]....
Linq To Sql Null - Check Whether A Column Is Null
Jul 15, 2011How to check whether a column is null i use the following code but I got this error "Input string was not in a correct format."
[Code]....
SQL Exception (adding A Null Value To A Non-null Column)
Aug 12, 2009When I put a break point to the last if clause in the sub ("If (backOrder < 0) Then", see below) it runs until the break point, if I put the break point further below, I get the following error:
Cannot insert the value NULL into column 'OrderID', table 'WHM.dbo.OrderDetails'; column does not allow nulls. INSERT fails. The statement has been terminated.
I've discovered first hand that it only happens when prodqty is bigger then qtyOnStock, thus executing the if clause.
The code:
Private Sub NCOSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NCOSubmit.Click
Dim sqlText As String = ""
[Code]....