I'm trying to get my head around this issue, on a few of my functions i get a warning " 'functionDealWithHiddenFields' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used."Example function:
vb.net
Function functionDealWithHiddenFields(ByVal HTML As String, ByVal numHiddenFields As Integer, ByVal X As Integer)
[code].....
i get a warning " 'functionDealWithHiddenFields' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used."
Example function:
vb.net
Function functionDealWithHiddenFields(ByVal HTML As String, ByVal numHiddenFields As Integer, ByVal X As Integer)
Try
[code]....
The functions still work correctly (as far as i can tell) what would i need to do to the above function to remedy that warning?
[URL]
I know the error and why. I am just curious. For some projects this show up as warning while for others this doesn't show up at all.
How do I set up so that the warning show up?
I have myself a problem here. I created myself 2 classes like the ones below:
1) Vehicles
2) SportsCars
I then created some "Properties" like the ones below:[code]I want to get the price of a selected car, but when i try to build i get the following error: Property 'Cars' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
What does this warning mean and how can i get it to go away.? Warning1Function 'ipAddr' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.C:Documents and SettingsHP_AdministratorDesktopMoney Manager in MysqlMoney Manager V1connection.vb385Money Manager V1
View 5 Repliesim trying to get mac adddress from this code but i get eerror on END FUNCTION line it says this "function 'getRemoteMac' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used." what am i missing here?
[Code]...
I have this VB crypter I am trying to build, but I am getting 2 warnings. I Would like some help if someone has the time. Please PM me and ill send you the crypt.Warning 1 Function 'ReadEOFData' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used. I:Usersn oahDesktopI am CrypterI am CrypterForm1.vb 189 13 I am Crypter
Warning 2 Variable 'Buf' is used before it has been assigned a value. A null reference exception could result at runtime. I:Users
oahDesktopI am CrypterI am CrypterForm1.vb 203 19 I am Crypter
How can I handle the above warning? Should I just return nothing when an error occurs?
te Function RetrieveAllCustomers() As DataTable
Dim adapter As New OleDbDataAdapter
Try
[code].....
I have a function to recursively search through windows (and their child windows) to find specific ones, it works exactly as expected, however it causes "function doesn't return a value on all paths" warning. This is the only warning in my entire program, and although it might be silly, I'm interested in knowing if there is a way to stop this error from occurring, but still allowing the function to work properly.[code]
View 4 RepliesI'm attempting to use the Left function to extract the 3 leftmost characters from a string.
I declare the function as follows
Public Shadows Function Left(ByVal str As String, ByVal Length As Integer) As String
End Function
I get a notification that "function Left doesn't return a value on all code paths"
Private Function ViewPropertyCast(ByVal type As String) As String
Select Case type
Case "smallint"
Return "Short"
Case "nvarchar"
Return "String"
[Code]...
Function can't return a value on all code paths.[cde]...
View 2 RepliesI am getting the warning that the function doesn't return a value on all code paths.
Function newgradelevel(ByVal valscore As Integer, ByVal strgradelevel As String) As String
If valscore >= 70 Then
If strgradelevel = "Freshman" Then
newgradelevel = "Sophomore"
ElseIf strgradelevel = "Sophomore" Then
[Code] .....
In more and more of my functions (althought they still work) i'm getting a warning the function doesn't return a value on all code paths.[code]...
View 3 RepliesUsually when I get an exception, the code line that creates it is marked yellow etc.. However now i only get a System.NullReferenceException as a line in the Immidiate window;
A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll
Is this due to some setting, or why don't I get any better indication?
i have a simple code that send an e-mail, when i try it running in debug mode it works fine, after compile, i run the exe but the same code doesn't work any more..
View 2 RepliesI'm trying to use ResolveUrl() to set some paths in the code behind of a custom ASP.NET user control. The user control contains a navigation menu. I'm loading it on a page that's loading a master page.When I call ResolveUrl("~") in my user control it returns "~" instead of the root of the site. When I call it in a page I get the root path as expected. I've stepped through with the debugger and confirmed, ResolveUrl("~") returns "~" in my user control code behind.Is there some other way I should be calling the function in my user control code behind to get the root path of the site?
View 4 Repliesvb Public Class BugReportsCentral
Private Sub BugReportsCentral_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WebBrowser2.Navigate("http://xxxxxxxxxxx.net/update/link/on-off/threadreport.html")
[code]...
Why this code doesn't work? It doesn't print the label with the correct thing.
I have got some code that is working as i have edited the game.exe at a certain address, now i know the code can find the address, but I don't know how to make it stop searching for it if it isn't there.
here is the:
code:
So what I want to know, is how to stop this code, if the address doesn't exist.
Am I just being blind or does this If statement genuinely not do what it's meant to.[code]This displays the message box even though textSample is one of the letters. In my eyes that If statement should see that textSample is one of those letters and skip it, whereas if it was Z it would "Not" be equal to any of those and would therefore show the message box.
View 6 Replies[code]i want to change password for the users [code]
View 14 Repliesim trying to get a selected time and my dataset doesn't return the selections what am i doing wrong in this statement
dim startindex as integer= 0
dim endindex as integer= 0
for each regel as datarow in my dataset.tables("Bookingen").rows
[Code].....
it seems that this query doesnt read the begindate and only displays record with enddate.
Code:
str = ""
str = str & "Select sum(quantity) as totalpurchase from purchaseorder where itemcode='" & itmcode & "' and"
str = str & " category='Consumables' and company='" & company & "' and (datereceive >= '" & datebegin & "' and datereceive <= '" & dateend & "')"
str = str & " and (postatus='received' or postatus='oh-hand')"
i am using vb2010 and mysql community server.
Using VB 2008 with Access database I'm trying to make a search field (txtSearch), but I'm not getting success with code in the button (cmdSearch). I'm making this manually, not using the Query Builder, and the result will be displayed in a datagridview (added to the form dragging the table from the Datasource Panel). So, the datagrid is already populated (with no SQL). What code must I use for the cmdSearch, to return the txtSearch.Text (or part of it) in the Datagridview? I've tried this: "Select Product, Price, Quantity FROM tblProducts WHERE Product LIKE txtSearch.Text & '*'" (but it doesn't work).
View 1 RepliesI'm using Visual Studio 2005, and I have a datagrid connected to a table from an Access database.
I added 4 textboxes so the user can type search filters to search within the table and a "search" button.
Then, I created a query using the "add query" tool on the datagrid. I wrote it like: select field1, field2, field3, field4, field5, field6 from table where field1=? and field2 like "%"+?+"%" and field3 like "%"+?+"%"
and field4 like "%"+?+"%"
Both field5 and field6 aren't search criterias, so I didn't add them to the query. Once the query was created, I replaced the parameters inside the procedure with my textbox1.text, textbox2.text, textbox3.text, textbox4.text and then cut and pasted the whole thing inside my SEARCH button click event, so the query is executed when the user clicks on the button.
Now the problem is: when I search using the first field it goes ok, but when I try to search by any of the other fields it returns zero results, even though I double-checked I had written the words correctly. I don't know why it does this. I already tried deleting the datagrid and creating it again.[code]...
If I use
xmlCommand.ReadToFollowing("A")
valueA = xmlCommand.ReadElementContentAsString
xmlCommand.ReadToFollowing("B")
[code].....
My system has Japanese regional settings. I have used this as default encoding in my code. But Encoding.GetString() method doesn't return proper length because of DBCS.[code]
View 2 RepliesBackground: My application is used to execute tests using Selenium RC servers, and occasionally I'm running into a problem when my call to a Selenium command doesn't return the response from the RC server - it then ends up blocking the thread that is executing the test.
[Code]...
How do I work out if 2 paths penetrate each other. I say penetrate as I do not just want to work out if they intersect or not ... as intersecting will return false if one path is completely within the other.
View 5 RepliesI am making an appilcation which displays images from a target folder. It was orginally using an sql .sdf file as its data source but the data source has been changes to a .mdb access database.The code does not seen to update the tabe, and being pretty new to this would like some help on how to do this as currently the code is stating the following error:Object reference not set to an instance of an object.This is the code which allows the customer to choose a target folder to display the file images, but the files will not update to the database: [code]
View 3 Replies