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I would suggest that you need to store an Unique ID column next to each message within your database, or a column for the sequence, (which ever best suits your requirements), the store the last shown message Id somewhere.
When you the want to show the next message :
SELECT TOP 1 MessageText FROM MessageTable WHERE MessageId > LastMessageId
Steve Jowett
-------------------------
Real programmers don't comment their code. If it was hard to write, it should be hard to read.
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We do not have the permissions to create new columns in the database. We have to go with the column message codes that is already in there.
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IF there is not a field that you could use as a comparison, like an ID field, then you could open up the table, search the each record (do loop/for each) for matching text to the current message text and then move to the next record and display that. When you get to EOF, then just go to the first record and display that message. Long way around, but sometimes you are forced to do things in code you nromally would have to do because of bad database design.
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I am receiving this error at Runtime:
Retrieving the COM class factory for component with CLSID {FDD4C8C1-69C9-11D3-9DC8-525400E38CF9} failed due to the following error: 80040154.
What is the problem?
reply me....
UTTAM...
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See if this[^] article is any help.
My advice is free, and you may get what you paid for.
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Hi,
im monitoring data from Temperature Sensors and writing it all into Excel (measuring 32000 samples).
I want to make an online chart in the form which will show me the Temperature graph dinamicly,
1)should i make an array of 32,000 filled with Zeros and send it to the chart whenever new data arrives ?
2)Is there a way to send a single incoming data to the chart and adding it to data which came before ?
3)how do I send data to chart without connecting it to any data source ?
(sending an array or adding values to it ... Chart FX, Microsoft Office Chart 11.0 or any other chart).
Thanks.
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Kobi_Z wrote: I want to make an online chart
Online as in on the internet (that's what it usually means) or online as in live?
Kobi_Z wrote: 1)should i make an array of 32,000 filled with Zeros and send it to the chart whenever new data arrives ?
Yes and no. Don't use an array, but you will have to send all the data that you want to be visible again and again. It'll probably be better to use a datatable, with an added index column (someone will correct me if I am wrong about this, I am sure).
Kobi_Z wrote: 2)Is there a way to send a single incoming data to the chart and adding it to data which came before ?
This depends on your answer to the first question.
Kobi_Z wrote: 3)how do I send data to chart without connecting it to any data source ?
(sending an array or adding values to it ... Chart FX, Microsoft Office Chart 11.0 or any other chart).
Connecting it to a data source by binding is always certainly going to be the fastest / most efficient, so why would you want to avoid doing that?
My advice is free, and you may get what you paid for.
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Hi All,
I am creating a application in VB.Net which has a form with "username" and "password" text boxes.I have to do the windows authentication for the username and password.Can you pls. provide me the code in vb.net for the same.
Thanking you in advance,
Ashwath.
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You want to replace the login-screen of Windows? With Visual Basic.NET?
I are Troll 
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We have a requirement from customer like that.
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I'm sorry to disappoint you, but AFAIK that cannot be done with .NET.
For anything prior to Vista, you'd need to write a replacement for GINA[^]. Otherwise, go for a Credential Provider[^].
I are Troll
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Try rentacoder or, better still, admit to your client that you lied about your ability, return their money and find a new careeer.
If you cannot use the help and/or google to work out how to sort a datagridview (google returned over 18,00 hits for 'sort datagridview example') then you don't deserve to be paid for doing development work.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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Hello to All,
My application is running well but when i m adding a dll in my project and using it. Then given problem is occured.
System.InvalidOperationException was unhandled
Message="An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object."
Source="Software"
StackTrace:
at Barcode_Software.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 190
at Software.My.MyProject.MyForms.get_Form1()
at Software.My.MyApplication.OnCreateMainForm() in E:\Software\Software\My Project\Application.Designer.vb:line 35
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at Software.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
If you can think then I Can.
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...See Exception.InnerException for details...
Have you checked the InnerException? You will find more details there.
Tosch
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eg_Anubhava wrote: Object reference not set to an instance of an object.
You are using un-initialized object some where in your code.
It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD
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For some the DataGridView doesn't get populated when i used inside a UserControl. It does perfectly inside a Form. I'm using VS2008 in a x64 plattaform. I did forced the application to a x86 CPU. As i've mentioned works fine in a Form but not within the UserControl. Any help will be greatly appreciated.
Imports System.Data
Imports System.Data.OleDb
Public Class UserControl1
Private Sub UserControl1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\myDatabase.mdb"
Dim myConnection As OleDbConnection = New OleDbConnection
myConnection.ConnectionString = connString
Dim da As OleDbDataAdapter = New OleDbDataAdapter("Select * from MyTable", myConnection)
Dim ds As DataSet = New DataSet
da.Fill(ds, "Notes")
DataGridView1.DataSource = ds.DefaultViewManager
End Sub
End Class
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hi experts
my name is sheetal and i realy thanks to your reply. my next query is i want write text and words in textbox by my voice Please give me a solution.
thanks.
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What you're talking about is speech recognition, and if you use version 3.5 of the .Net framework, then it can be done. I made a post about nine hours ago with instructions
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You answer questions nine hours in advance now? I'm err ... speechless. (My TextBox will remain empty).
Luc Pattyn
Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.
Local announcement (Antwerp region): Lange Wapper? Neen!
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Yes. A few flux capacitors, magnetic clamps and hyper-resonance attenuators and I'm all set. All I do is turn an egg-timer the 'wrong' way and I'm there.
[edit] In response to your future question, the answer is 7*pi
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hi experts
thanks to your reply but i does't understand your answer
my question is write letter in textbox by my voice
ex. i create one application and set one textbox and attach headphone to pc and some say 'hello' than the hello word is write in textbox.
Please give me a answer.
Thanks
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Okay. Step by step then.
- Create a new System.Speech.Recognition.SpeechRecognitionEngine()
- Set the input to the default audio device
- Load a new DictationGrammar
- Invoke RecogniseAsync, passing RecogniseMultiple as a paramater
- Hook the SpeechRecognised event
In the method you hook to the SpeechRecognised event, you can write to the TextBox
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Why do you think people will give you 'solutions' (which I assume translates to code)?
Can you not Google yourself?
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