i have a code below. Everything seems alright but the GetConsoleFontSize return value is invalid in my PC. it returns back cfi.dwFontSize x=0 y=7 the right result must be 8*12. i have also a VB6 code sample everything is same but why in VB.net machine i have got different result. i also tried to change declarations but i could not find an answer.[code]
View 1 RepliesOk, just needing a 2nd set of eyes looking at this to make sure the error isn't something else other than my LINQ code here. Here's the function class itself:
Public Function GetJacketByPolicyID(ByVal jacketID As Int32) As tblPolicy
Dim db As New DEVDataContext()
Dim j As tblPolicy = db.tblPolicies.Single(Function(p) p.policyNumber = jacketID)
Return j
End Function
and here is the code which calls this class function in the web control form itself:
Dim p As tblPolicy
Dim j As New Jackets()
p = j.GetJacketByPolicyID(3000050)
For some reason it's flagging the 2nd line in the GetJacketByPolicyID function saying the specified cast is not valid. So I'm guessing it's something I'm doing wrong. I'm sure the tblPolicy/tblPolicies class works right since I can create a new instance of a tblPolicy and set a few variables by hand and return it, so that's not it. I've also checked the datarow I'm fetching and there's no null values in the record, so that shouldn't be it either.
I'm using Microsoft Visual Basic 2008 Express Edition. I have a Folder Dialog Browser added in my form and I call it when the user presses a button. The folder path string is stored in a string variable and displayed as text in a text box. (maybe I should use a combo box)
My question is: If the user inputs by hand a non existent path, how do I return an error message, stop the file creation into the invalid path, and return to my main form?
I have an error that is during the query to a database ExecuteReader 'phase' of my program, i am assigning an .OleDbDataReader to a variable RetVal and then, i am giving this RetVal = Query.ExecuteReader, and then in the while the query is being read loop(While RetVal.Read) i am getting an error in runtime that is "Invalid attempt to call Read when reader is closed." I know this means i have to open the reader, but i don't know how to do this, as i have been using this process for a few weeks and haven't had this error pop up. (and i have managed to use the while loop)If you're not living on the edge, you're taking up too much room
View 7 RepliesMy console errors out when I enter anything other than a number or operators in the designated (input). I stink at this stuff but I have been t this for about 8 hrs. still not there. I have included a text file for the task at hand
[Code]...
I'm using WMI code and VB 2008 to see NIC status. So far the queries are working, but the methods aren't. For example, I'm trying to set a network card to use DHCP, I get invalid function with this code:
Dim classInstance As New ManagementObject("rootCIMV2", "Win32_NetworkAdapterConfiguration.Index='7'", Nothing)
Dim outParams As ManagementBaseObject = classInstance.InvokeMethod("EnableDHCP", Nothing, Nothing)
I'm getting Invalid column name 'CHARLES'. Invalid column name 'CHARLYN'. Invalid column name 'SMITH'.what's wrong with my code, it's been a long time since I used SQL dataset. I'm into LINQ but I'm having problems with this kind of LINQ query so I'm reverting to SQL dataset.here's my code:
'Set up a data set command object.
Dim sSelectColumn As String = ("SELECT * FROM tblScanned WHERE LastName=" & sLastName & " AND FirstName =" & sFirstName & " AND MiddleName =" & sMiddleName)[code].....
where I was encrypting the string and passing it to another web page to decrypt and get the ids to be displayed as a pdf back to the page. I kept getting an invalid "Invalid length for a Base-64 char array". It was then I realised that the string was getting truncated and that the IE Explorer had a size limit for the number of charaters being passes as a querystring.So I think I need to go the route of posting it.But not sure how to go about it.
Private Sub GetReport()
Try
Dim hawbs As String = String.Empty[code]....
The retrieve document then does: the decrpytion gets the data(ids) and pulls the pdfs.
I use this code to return records in a DataGridView:
[Code]....
I'm working up a system where I plan on using RealProxy objects to enable intercepting method calls against a set of objects, handling the call, and then returning appropriate results. This works just find for simple return types like strings or ints, but I can't seem to return objects from the RealProxy.Invoke method. Everything works. I get no errors, but the returned value is always NOTHING, instead of an object.
I've worked up the smallest sample code I could, and have included it below. Essentially, just call RPtest and single step through. The code creates a simple object, RPTestA, with a string field and an object valued field It then retrieves the string
[Code]...
I'm making a Visual Basic GUI application to display whether a number of my ports are open for people to know whether things like my website and my Minecraft server are open.My problem is I have absolutely no idea how to do this in Visual Basic.Basically, I'm asking for something which sends a signal to an IP with a specific port, if it is open then return true, if it's closed, return false. Similar to: http:[url]....
View 1 RepliesI would like the following function to return Nothing if the element with the specified key is not in the collection. Instead, it returns an error - something to the effect of "no element found"
Public Class MyCollection
Inherits System.Collections.ObjectModel.Collection(Of MyType)
Public Function FindByActivityKey(ByVal searchValue As Integer) As MyType
[code]....
Got a strange one and I know it is something silly but I can't see it for anything I have a DLL created in VB.net (No I can't change it! :-)) and am calling it from C#. The problems come at the point the object is created in C# and I get the message that it has "some invalid arguments".
The constructor code in the DLL is as follows:
Sub New(ByRef Connection As IConnection)
The code in C# is:
IConnection conn = new Connection();
CustomObject test = new CustomObject(conn)
It is happy with the first line but it gives the error message ("some invalid arguments") on the second line. I have also created a secondary project in VB.net and called the DLL and it works fine there.
I have the following jquery which is invalid:
{
"id": 12,
"heading": "heading goes here 3",
"content": "<p><span style="color: #ff0000;">content</span> <u><strong>goes </strong></u><span style="color: #ffffff;"><span style="background-color: #ff0000;">here</span></span> 3.</p>"
}
I am generating this with asp.net (vb.net) from data stored in a database. I think I need to somehow escape the double quotes within the content section of the json data. How do I do this?
I'm getting an invalid cast exception but I'm not sure why, here is the list of my conversions.
SQL -> VB.NET
char(4) -> String
varchar(50) -> String
tinyint -> Integer
char(1) -> Char
bit -> boolean
[Code]...
i have an app in vb.net 2008 having an employee form with includes among other controls ,a button (named btnEmpRmk) for comment and textboxes and txtEmpId for employee's ID respectively.
View 7 RepliesCLR detected an invalid program
View 8 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 RepliesHow to inform that the user has entered wrong username/invalid [code]...
View 4 RepliesI have a gridview0 in a multiview and when I click select on a row I have theGridView0_SelectedIndexChanged sub change to a different view in the multiview, which has a different gridview1 but the same datasource as gridview0. This is when it errors out and it displays the invalid column name error, with the column name being the datakeyname of the first gridview0 row that was selected
Protected Sub GridView0_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView0.SelectedIndexChanged
Dim ISTag As String = GridView0.SelectedDataKey.Value.ToString
[code].....
I am attempting to write some interface code for a piece of hardware. Because the hardware requires use of 12 control lines, I believe the parallel port is the easiest connection method. After some research, I have discovered that inpout32.dll is the most efficient solution with only two commands to worry about (inp32() and out32()). I have downloaded the dll and attempted to place it in my code using both dim and declare statements. The file resides in the root level of the project folder as well as another copy in the windows directory. No matter how I try to call the dll it gives me errors stating that libraries were expected and that the dll does not exist.
View 5 RepliesI get the following error: Heap block at 068B13D8 modified at 068B1408 past requested size of 28Invalid address specified to RtlFreeHeap( 003B0000, 068B13E0 )Invalid address specified to RtlFreeHeap( 003B0000, 068B1420 )
What I did is I have a have a custom save as dialog. Every time I hit the save button, I see the heap message. It does not always crash my program but it does. Here is my code,
Private Sub lVW_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LVW.Click
With LVW 'LVW=ListVew Name
LVW.Text = .SelectedItems.Item(0).Text
[code].....
see from the following function why I would be getting an "Invalid Cast Exception"? More specifically this is the error "Conversion from string "yyyyMMdd" to type 'Integer' is not valid." I am trying to convert a DateTime value from the database to a String with the format "yyyyMMdd" so for example October 22, 1985 would be "19851022".dbReader(fieldName).ToString("yyyyMMdd")Here is the entire function ...
Private Function GetDBReaderDateValue(ByVal dbReader As IDataReader, ByVal fieldName As String) As String
If dbReader(fieldName) Is DBNull.Value Then
[code].....
How do I get rid of invalid cast expression from the Values in the Combobox to fit in the equation in examgrade? I tried to resolve it by looking it up on MSDN, and the like but couldnt figure it out.I tried using Examgrade = ().ToString but that did not work.FYI this is my first real program, I successfully made this once in C# but deleted the source files, so this is Visual Basic and a hell of a lot easier to get this far.The asterisks mark the problem line
Public Class Calculator
Dim quarter3 As Integer
Dim quarter4 As Integer[code].....
I am getting error with the following code. The exception is Invalid column name 'pmoss;.The code seem to be perfectly but don't know what exactly went wrong.[code]
View 3 RepliesI recently upgraded a VB 6 project to .net. I'm having a problem with this block of code:
Dim CtrlName As System.Windows.Forms.MenuItem
For Each CtrlName In Form1.Controls
'Some code here
[code].....
I'm trying to connect vb to sql server using this code:
Public Class _Default
Inherits System.Web.UI.Page
Dim insertQuery As String
[Code]....
I'm new to VB, trying to connect vb to sql server using this code:
Code:
Imports System.Data.OleDb
Public Class _Default
Inherits System.Web.UI.Page
Dim insertQuery As String
Dim updateQuery As String
Dim deleteQuery As String
[Code]...
I'm receiving an Invalid Object Name for my table name how do I get it so I don't get it.
View 5 Replies