'Key Not Found' Exception When Reading Item From SortedList?
Jun 9, 2010I have a SortedList
Protected _Items As New Generic.SortedList(Of String, _Control)
I am adding items into this SortedList
_Items.Add(_key, _Control)
[code].....
I have a SortedList
Protected _Items As New Generic.SortedList(Of String, _Control)
I am adding items into this SortedList
_Items.Add(_key, _Control)
[code].....
1) SortedLIst has a GetKey property: you ask for the nth key in the sorted list of keys and you get it. SortedList(of TKey, TValue) does not have this kind of feature. Why not?
2) SortedList stores values as "object." Is this a less memory-effective method to store values of Double than SortedList(of TKey, TValue)?
I'm trying to catch a user defined permission exception - i.e. a user does something their level of system access won't allow, permission exception is thrown. My problem is, the exception is caught and then rethrown as a genertic System.Exception.Is there any way I can deduce the original exception type, without resorting to string comparisons, like if ex.ToString.Contains("Permission denied"
View 2 RepliesDuring file copy, I'm giving the absolute file name. But the compiler says file not found always. Is it a problem in my system or any error in my program.
Public Sub backupDB()
Try
Dim FileToCopy As String
[Code]....
im making a program and it needs to load 95 files on form load.im trying to make it to if the file cant be found that it will give a error instead of a JIT debug thing. i triedadding
HTML
Catch ex As Exception
MsgBox("Error: " & ex.Message)
[code].....
I have recently converted a .net 1.1 web application project into a .net 2.0 webapplication. It compiles without errors, but when I run it in the browser, I get thefollowing error:
View 6 RepliesThis is a strange one that I have so-far been unable to resolve. Basically, when you click on a function icon within the software application it throws up the following message in box:"An unhandled exception has occurred in your application. if you click continue, the application will ignore this error and attempt continue. If you click quit, the application will close immediately"The specified module could not be found. (Exception from HRESULT: 0x8007007E)See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
System.IO.FileNotFoundException: The specified module could not be found. (Exception from HRESULT: 0x8007007E)
at Universal_Camset.Communications.Transmit(String Data)
at Universal_Camset.VCL_MIC_500_Module.VCL_MIC_500.Send(String Data)
[code].....
This happens on two systems; Windows XP SP2 or SP3 - .net framework 1.1 & 2.0 & all necessary patches etc installed. Just can't seem to get around it. What is more frustrating is I have a test rig that has exactly the same software attributes & it works fine on that.I have even tried full clean O/S install with no other applicationms installed & get the same eratta as above.
I am trying to convert one of my unix text files to a dos text file. I am using the following command:
Shell(string.format("unix2dos {0}", sFileCompletePath))
I've already added the unix2dos command in my environment path on the server.But when I execute the above mentioned command I get a FileNotFound exception even when the file is located on the disk.
This is my code.Private Sub cmdDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdDelete.Click
[Code]...
{"An error occurred creating the form. See Exception.InnerException for details. The error is: The specified module could not be found. Exception from HRESULT: 0x8007007E)"}i got the following error...what is this error??can't figure it out...i m using vb2005..vb.net
View 1 RepliesI am having problems with highlighting the found listview item using the code below:
If lstMaster.View = View.Details AndAlso lstMaster.Items.Count > 0 Then
Dim lvi As ListViewItem = lstMaster.FindItemWithText(txtSearchSR.Text, True, 0)
If lvi IsNot Nothing Then
MsgBox("found")
lvi.ListView.Items(0).Selected = True 'Does not seem to work...
End If
End If
How do I highlight the found column?
How to make it where I highlight a item in a listbox, then press a button, and it goes to the next one down? Also, how do I make a If for if theres no item when it goes +1 then make it display a message box like "End of the list"?
View 6 RepliesAm getting an error run time error 3265 Item not found while trying to run a vb 6 application. could it be a database connection error? am using SQL 2000 server system dsn. in another machine its working but am trying to set it up in a different machine. what could be the problem?
View 1 RepliesI am searching a XML file for <Asset_Number> and then adding all children to DataGridView1, i can search but i dont know how to add item to the DataGridView Also my datagridview columns are created from a txt file
this is what i have.....
this is my XML
<?xml version="1.0" standalone="yes"?>
<DocumentElement>
[Code].....
i want to search item A (from a list of X items) in list B but i want to get the item not found example Search ITEM A in LIST B if not found then return a print....if found continue with ITEM B..and so on.
View 11 RepliesHere's my code:
Code: Public Sub ProcessInbox()
Dim oOutlook As New Microsoft.Office.Interop.Outlook.Application Dim oNs As Microsoft.Office.Interop.Outlook.NameSpace Dim oFldr As Microsoft.Office.Interop.Outlook.MAPIFolder Dim oAttachments As Microsoft.Office.Interop.Outlook.Attachments Dim oAttachment As Microsoft.Office.Interop.Outlook.Attachment Dim
[code]....
If I change the following line as shown, it works OK:
Code: Dim oMessage As Object
Is this the best way to get it to work or what should I specifically define the variable oMessage as?
|+--JDMils|+--VB6 & XL VBA+--VB Dot Net 2K8|
I have built everything for Beta one and I thought I had done very well until and Exception happens when I try and run it. Please could someone take a look at this and see if you know whats causing it:
Message: {"No value given for one or more required parameters."} Error -2147217904 Item: In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. I don't know whether more info is required from the error but it happens on this line:
DReader = DSelectCommand.ExecuteReader
[Code]...
I have checked the database is in the target location and the table names and column names are all correct.
Occasionally I encountered this exception message while trying to download file from a server using System.Net.FtpWebRequest and System.Net.FtpWebResponse Object.
Download a file.ftpRequest_DL.Method = WebRequestMethods.Ftp.DownloadFile get the response object
Dim ftpResponse_DL As FtpWebResponse = CType(ftpRequest_DL.GetResponse, FtpWebResponse)
[Code]...
Exception While Reading Excel Sheet Drop Down Value...
View 3 RepliesI'm trying to handle DBNull exception while reading data from database. It's my code:
...
Dim SQLRDAs SqlDataReader
...
val1= GetStringFromDB(Trim(SQLRD("Name")))
val2= GetStringFromDB(Trim(SQLRD("Level")))
[Code]...
But still I get Conversion from type 'DBNull' to type 'String' is not valid. error.
How to get the key of a sorted list from the corresponding value directly without using For Each loop. For instance in the following code snippet, I want to get the key value (and not the index) of "Canada", how?
Code Snippet:
SortedList
Imports System
Imports System.Collections
[Code]...
Here's a list example
SortedList name = test
"nothing" | 0
"something" | 1
How can I go about running a for each loop or something to add each first column in test to, say a listbox.
Listbox should just have listed.
nothing
something
I tried
For Each i In text.Values
lbTest.Items.Add(i)
Next
But that produces:
0
1
I have a the need for key value pair that I wish to sort so I decided to use a SortedList instead of a HashTable.I am adding the data in the order below to my SortedList which is the order I need it in
Key | Value
--------------------------------
1 "700-800" | List(Of Object)
2 "900-1000" | List(Of Object)
[code]....
The key is a string and the value is a List of objects. The key is representing a time slot that has been concatenated from two integer values and delimited by "-". "700" as a string was 0700 initially an integer.e.g.
Dim key As String = slotTimeStart.ToString() & "-" & slotTimeEnd.ToString()
But once these key value pairs are added to the SortedList they appear in the order
3 "1100-1200" | List(Of Object)
4 "1700-1800" | List(Of Object)
[code]....
Unfortunately I recieve the times slots as two integer values which cannot be changed.Is there any way to force a sort on a SortedList? or is this problem because of the way I am storing my key? Is there a better way to store it?
I have a "simple" question how can I get the first letter of the selected item in a listbox and put it in a textbox?
View 6 RepliesIn my asp.net page I'm making a copy of a file from my local drive to the server.[code]But when I run this code asp.net throws an exception:But I can browse to this file easily.
View 1 RepliesI'm developing a very simple app that does nothing more than launch two other apps. I'm developing this under the .NET 2.0 framework for WinCE 5.0 in VS2005.No matter what I do, I keep getting file not found exceptions not handled, and the program crashes. (Yes I should probably have a try/catch block, but this isn't the issue.)
Here's some code
fullPath = Path.GetFullPath(drivePath)
Me.Label1.Font = New System.Drawing.Font("Tahoma", 6.0!, System.Drawing.FontStyle.Regular)
Me.Label1.Text = fullPath & strDrivePath
Now, the label change here is not important, I only do this to output the full path of the directory, and strDrivePath is "whatever.exe"
If Directory.Exists(fullPath) Then
If File.Exists(fullPath & strDrivePath) Then
Me.Label1.Text = "EXISTS!!!"
[code].....
The irritating thing is after getting and displaying the full path (I know it's there) I check with the first IF to prove to the program it's there. No problem.I then use the second IF to prove to the program that the executable is there, and change the label output on screen to prove to myself the code is executed. The label changes. The file is there.
Then when I run the program, File not found exception. It's driving me insane. I've tried in multiple OSes (Vista and CE 5.0), I've tried in directories with spaces and no spaces, I've tried using Process.Start() and setting up the file details through the info command.I've tried putting a path in there directly instead of using variables. I've tried wrapping the whole kit and kabodle in quotes like this Shell("" & fullPath & strDrivePath & "" ) and like this Shell("""" & fullPath & strDrivePath & """").I've searched high and low on forums around the globe, including multiple threads here and I just cannot get it to work.
i can get a value, a key out of a list by using index ,key or value parameters but a kvp as object ?nattelip
View 13 Replieswhen you use the object browser to see the features of a sortedlist elementat is not shown , but because a sorted list inherets features of ienumerable it works, cant that be corrected
View 1 Repliesi have a sortedlist variable called :
Cart
which contains two Cartitem object and within these two objects is a further object called Product.i wish to amend the Product object Property named Quantity
["860"] = {Cartitem}
["861"] = {Cartitem}
When i attempt to update the Cartitem object using the key value it overwrites Cartitem to Product.
Present Update
Cart(key.ToString) = product
results in
["860"] = {Product}
How may i update a Product property without replacing Cartitem object to Product?
I'm making a sortedlist I can read a file into my program but do someone now how to show the output? Its made with classes and they will work. How to show the output of the file because I can't find.
This is the Form1
Public Class Form1
Public lijst As New SortedList(Of String, bankrekening)
'Dim spaar As spaarrekening
'Dim zicht As zichtrekening
Private Sub OverschrijvenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OverschrijvenToolStripMenuItem.Click
FrmOverschrijven.show()
[Code] .....