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Dear Sir,
I have taken a combo box in datagrid. that combo box allows the user to write in it. please tell me the code to stop the user to write anything in it.
code is :-
Private Sub CboUom(ByVal sender As System.Object, ByVal e As System.EventArgs)
Try
Dim cbo As New ComboBox
cbo = CType(sender, ComboBox)
dgrdItems.Item(dgrdItems.CurrentCell.RowNumber, dgrdItems.CurrentCell.ColumnNumber) = cbo.Text
dgrdItems.Item(dgrdItems.CurrentCell.RowNumber, dgrdItems.CurrentCell.ColumnNumber + 1) = CInt(cbo.SelectedValue.ToString)
Catch ex As Exception
clsXmlMessages.ShowError(ex.Message)
End Try
End Sub
please help.
Gurpreet
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No code at all.
In the combobox properties, the DropDownStyle is probably set to "DropDown". Change it to "DropDownList".
Roy.
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I havent taken combobox in datagrid...i think, u havent seen my code.
I am taking combobox like this.....dim tempcom as new combobox which will be converted into textbox after user lost its focus. and when we try to write smthing in dropped down combobox...after leaving the box...textbox comes and written word are displayed there instead of chosen field.
so, dont have property window.
please try to help me out.
thanks
Gurpreet
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i have a problem.
In my code ,while design mode of project code work propperly.
when i make the exe & install & run it code doesn't work.
in my code i m doing a simple task.
i change the directory ,
call cmd.exe
& run a different file.
here on my cmd prompt
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So... where's the point at which your problem occurs? Posting your code will make a huge difference to the help you get on this forum.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once 
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the way i am sending the code may be wrong, i don't know how to send code on forum but i am trying
the code is as follow
it has 2 forms
' the code for module 1
Module Module1
Public Make As frmMakeCode
End Module
------------
code for frm1 ,it has 1 textbox ,one button
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ChDir(TextBox1.Text)
If Make Is Nothing Then
Make = New frmMakeCode()
Else
End If
Make.CommandText.Text = "make"
Make.run()
End Sub
'------------i am having one class ,code for class is as follow
Imports System.IO
Imports System.Diagnostics
Public Class CmdProcessor
Public Sub Execute(ByVal command As String)
_process = Me.InitializeProcess(command)
_executing = True
_process.Start()
Me.AttachStreams()
Me.PrepareAsyncState()
_standardOutput.BaseStream.BeginRead(_outputBuffer, 0, _outputBuffer.Length, _outputReady, _outputState)
_standardError.BaseStream.BeginRead(_errorBuffer, 0, _errorBuffer.Length, _errorReady, _errorState)
End Sub
Public Event TextReceived As CmdProcessorEvenHandler
Private Function GetStartInfo(ByVal command As String) As ProcessStartInfo
Dim psi As New ProcessStartInfo()
psi.FileName = "cmd.exe"
psi.Arguments = "/c" + command
psi.UseShellExecute = False
psi.RedirectStandardError = True
psi.RedirectStandardOutput = True
psi.CreateNoWindow = True
Return psi
End Function
Private Function InitializeProcess(ByVal command As String) As Process
If (_executing) Then
Throw New ApplicationException("Another process is currently executing")
End If
_process = New Process()
_process.StartInfo = GetStartInfo(command)
_process.EnableRaisingEvents = True
AddHandler _process.Exited, AddressOf _process_Exited
Return _process
End Function
Private Sub _process_Exited(ByVal sender As Object, ByVal e As EventArgs)
Dim exitCode As Integer
exitCode = _process.ExitCode
RaiseEvent TextReceived(Me, New CmdProcesserEventArgs(exitCode.ToString()))
_process.Dispose()
_process = Nothing
_executing = False
End Sub
Private Sub AttachStreams()
_standardOutput = _process.StandardOutput
_standardError = _process.StandardError
End Sub
Private Sub OutputCallback(ByVal ar As IAsyncResult)
Dim state As AsyncState
state = DirectCast(ar.AsyncState, AsyncState)
Dim count As Integer
count = state.Stream.BaseStream.EndRead(ar)
If count > 0 Then
Dim text As String
text = System.Text.Encoding.ASCII.GetString(state.Buffer, 0, count)
RaiseEvent TextReceived(Me, New CmdProcesserEventArgs(text))
state.Stream.BaseStream.BeginRead(state.Buffer, 0, state.Buffer.Length, _outputReady, state)
End If
End Sub
Private Sub PrepareAsyncState()
_outputReady = New AsyncCallback(AddressOf OutputCallback)
_outputState = New AsyncState(_standardOutput, _outputBuffer)
_errorReady = New AsyncCallback(AddressOf OutputCallback)
_errorState = New AsyncState(_standardError, _errorBuffer)
End Sub
Private _executing As Boolean
Private _process As Process
Private _standardOutput As StreamReader
Private _standardError As StreamReader
Private _errorBuffer(512) As Byte
Private _outputBuffer(512) As Byte
Private _outputReady As AsyncCallback
Private _outputState As AsyncState
Private _errorReady As AsyncCallback
Private _errorState As AsyncState
Class AsyncState
Public Sub New(ByVal stream As StreamReader, ByVal buffer As Byte())
_stream = stream
_buffer = buffer
End Sub
Public ReadOnly Property Stream() As StreamReader
Get
Return _stream
End Get
End Property
Public ReadOnly Property Buffer() As Byte()
Get
Return _buffer
End Get
End Property
Protected _stream As StreamReader
Protected _buffer As Byte()
End Class
End Class
Public Delegate Sub CmdProcessorEvenHandler(ByVal sender As Object, ByVal e As CmdProcesserEventArgs)
Public Class CmdProcesserEventArgs
Public Sub New(ByVal text As String)
_text = text
End Sub
Public Property Output() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected _text As String
End Class
------------
the code for frm makecode is as follow
cod start here
Private Sub GoButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GoButton.Click
msgF = False
showmsgF = True
k = 0
Me.OutputTextBox.Text = String.Empty
Dim cmd As New CmdProcessor()
AddHandler cmd.TextReceived, AddressOf Me.cmd_TextReceived
cmd.Execute(Me.CommandText.Text)
End Sub
/**************
this code work at design time , but at run time it fails
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thandal wrote: this code work at design time , but at run time it fails
OK, but at which line does it fail, what is the error displayed (if any) and what are the parameters to the function/sub that failed?
Have you run this in debug mode (single step) and inspected the parameters to the calls line-by-line? If so, what did you find?
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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when my project is in debug mode.
every thing work fine, whichever path i write in Textbox1 , my pgorgam go in that directory , & runs the make file command, as i gave,
when i make exc of this project install it on my pc & run it.
it give error
like
"2make: *** create_child_process: DuplicateHandle(In) failed (e=6)
. Stop."
so it means my system fails to generate fork .
i don't understand how to resolve this problem
so plz help me out
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What are you using to compile it?
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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i m yusing this to compile C file
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thandal wrote: i m yusing this to compile C file
Huh? Are you using VB6, VB.NET or something else?
You cannot compile a VB program with a C compiler and visa versa.
The error you have shown here is a compiler (i.e. make file) error and not a runtime error from the program.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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this is not a compiler error , because when i run same thing through my vb project, whose build condition is debug mode it run make file very well , but it fail through exe
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You are not listening to what I'm saying. Have a look back over my replies and provide the requested information otherwise I cannot help you.
The error message is not from your compiled program - it is from the MAKE process. I respectfully suggest that what you think you are running as your compiled EXE is not really your compiled EXE.
Check, double check, then double check again.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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You haven't by chance named your compiled program something like "MAKE.EXE" or some variant?
Possibly a program of the same name already exists on your target PC and is being selected for execution instead of your own?
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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here what i want is my program should execute a make file for a c program , which is already in a directory whose path i am writing in trextbox1. i want to compile a cprogram using the make file , whch i want to run from my vb dot net exe
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thandal wrote: here what i want is my program should execute a make file for a c program , which is already in a directory whose path i am writing in trextbox1. i want to compile a cprogram using the make file , whch i want to run from my vb dot net exe
Right... if you'd said this in the first place then we'd have solved it a bit quicker. Moral of the story is: give as much _accurate_ information in the first instance so we don't waste time.
Also I can see that in your code you provided (thanks) not all of it is included so some referenced functions are not available to me for diagnosis.
The problem most likely arises because the path you are giving the program is possibly not fully qualified or that the current working directory of the program is not what it is expecting. When you run in debug mode the application's path is basically the project folder on your C: (or D: or E: whatever..) drive.
Why don't you add some message boxes to your code to display the command being executed at runtime so that you can see whether or not the makefile command is constructed properly (i.e. it has the correct parameters).
Try running that command manually from a command prompt - do the CHDIR() etc... as the program would on your development machine and see what the differences are if any.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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hi i am really sorry for not sending the proper info, there is no way to attachment, at least i don't know, this is very first time i am on forum.
now,
when i manually use command prompt , go in that perticular directory where my make file reside with the c files to be compiled everything work properly.
now my vb project (with build condition as debug) is at "d:", that time also i am able to go at c:\test folder & able to run make file properly.
here while i use my installed program it doen't work properly.
So while to build setup do i have to take different precaution if yes then plz help me.
the code i have sent you. do it work at your ent or not.
i must thank you , for your trials, to slove my problem
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hi i tried as you say i am watching my current working directory,
curdir(), shows me the same directory (path ) which i entered in textbox1.
but still i am unable to run the make , it gives me the same error.
so it means the problem is in run time
can you guess, what is problem
waiting for reply
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The message you posted isn't a VB Runtime error. It has something to do with your MAKE process that you're launching. You would probably be doing yourself a favor if in your command line to launch the MAKE process, you directed the output to a file to log everything that is going on. You can append > C:\makeoutput.txt to your command line.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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hi you are write ,this is not a vb dot net run time error.
i try with, redirecting my output to makeoutput.txt
but i still don't understand, how it's work in debug mode.
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hi guys,
i have a vb application in which im reading columns in Xl file and write a error log in seperate xl file .my req is i will read columns in xl file which are mandatory if any of columns are left balnk i have to write to error log by calling another class file.if the col filled then it will write to the success sheet if it is not then it will write to the error sheet.what the prob im facing is i have some validations on reading to cheack whether the value is numeric and it is within limit and all.if the column has letters instead of numeric then the column is taken as null .that's my prob please solve this .it's killing me
with regards,
susa
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any help is greatly appreciated.Thanks
donle
-- modified at 0:15 Wednesday 19th April, 2006
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Help with what? What exactly are you having a problem with?
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
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If yo want to read/write data have a look at the BCP command line utility
'--8<------------------------
Ex Datis:
Duncan Jones
Merrion Computing Ltd
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Need a good Email Validator function...Help me out!
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