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For future reference, adding the text of the exception is always helpful. However from you're code I'm guessing it's something like "...row already exists in grid." ...or something like that. You're adding the same row object to the grid twice. You need a new row object the second time around. Otherwise all you are doing is updating the data in the first row you added.
Hope this helps.
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Hi Experts,
I am trying to create an application that can Execute an C Program in VB.Net.
Can anybody please help me.
Regards,
Sheetal
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paya1pa wrote: I am trying to create an application that can Execute an C Program in VB.Net.
If that means that you are trying to execute a compiled C Program, then look at the documentation for the Process class.
If not, then you need to explain your question more clearly.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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hi expert i revieced your message
firstly thanks to your reply and i can try explain my question.
i want to make one project and project is c prgramme ran in vb.net 2005
ex. suppose i write one addtion programme of two number so vb,net complile this programe and show error in textbox or messagebox.just like a c language software. but everythisk is run in vb.net 2005
please give me a reply
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paya1pa wrote: i want to make one project and project is c prgramme ran in vb.net 2005
Rather obviously, VB.Net cannot compile 'C' code.
paya1pa wrote: ex. suppose i write one addtion programme of two number so vb,net complile this programe and show error in textbox or messagebox.just like a c language software. but everythisk is run in vb.net 2005
If you want to write a simple program to add two numbers, then I would suggest that you either buy a beginners book and work through the examples, or search with Google or Bing for vb.net beginners ebook and you might find a suitable free tutorial.
Other than that I am unable to help.
Good Luck. 
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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So do you want to write your own C compiler or use a third party command line compiler, or what?
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thanks experts i think can't explain my querry
i want complie c proramme in vb.net 2005 whatever.
output display in textbox
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If you can't communicate your apps specifications, you're not going to get any meaningful answers.
What you have posted has a lot of different answers, and each of those opens up more and more questions.
Sorry, but it is VERY true that the quality of the answer you get is directly dictated by the quality of the question.
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Hello to everyone,
I want to implement voice recognition feature in my application. I need to recognize couple of words and then open the recognized application(i.e. word, excel, etc.). I really new to it, so help me out.
Thank you in advance.
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You might want to look into the System.Speech.Recognition namespace, particularly the class SpeechRecognitionEngine. Don't forget to call LoadGrammar with a new instance of System.Speech.Recognition.DictationGrammar.DictationGrammar
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Hi,
I have a function that populates a list with items of type 'RemoteCustomFieldValue'. Now I would like to extend this function in a way that the list would accept items of different type 'RemoteFieldValue'.
I thought this would work like in the snippet but I get the following error in the if-statement:
'The expression of type "System.Collections.Generic.List(Of T)" can never be of type "System.Collections.Generic.List(Of legion.SST.Jira.RemoteCustomFieldValue)".'
And another one when adding the item to the list
'The value of type "legion.SST.Jira.RemoteFieldValue" can not be converted to "T"'
How can I solve this problem? Perhaps is there another way to do it.
Many thanks in advance
Private Sub GetUserInputValues(Of T)(ByRef alRemoteCustomFieldValue As List(Of T))
....
If TypeOf alRemoteCustomFieldValue Is List(Of RemoteCustomFieldValue) Then
Dim rcfvUsrInput As RemoteCustomFieldValue = New RemoteCustomFieldValue
rcfvUsrInput.customfieldId = ContentCtrl.ID
rcfvUsrInput.values = s.ToArray
alRemoteCustomFieldValue.Add(rcfvUsrInput)
Else
Dim rcfvUsrInput As RemoteFieldValue = New RemoteFieldValue
rcfvUsrInput.id = ContentCtrl.ID
rcfvUsrInput.values = s.ToArray
alRemoteCustomFieldValue.Add(rcfvUsrInput)
End If
End If
End Sub
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Even if you could have the TypeOf ... is ... condition you were trying for, the code inside that if block will still fail. Just because you have made a check to ensure that the contents of a variable is a certain type, the compiler will still treat the variable as if it is the base type. You would need to put something like this:
Private Sub GetUserInputValues(Of T)(ByRef alRemoteCustomFieldValue As List(Of T))
....
If TypeOf alRemoteCustomFieldValue Is List(Of RemoteCustomFieldValue) Then
Dim customList As List(Of RemoteCustomFieldValue) = _
CType(alRemoteCustomFieldValue, List(Of RemoteCustomFieldValue)
Dim rcfvUsrInput As RemoteCustomFieldValue = New RemoteCustomFieldValue
rcfvUsrInput.customfieldId = ContentCtrl.ID
rcfvUsrInput.values = s.ToArray
customList.Add(rcfvUsrInput)
Else
....
The problem stems mainly from the fact that generic classes cannot be converted based on the type parameter (eg: List(of Derived) cannot be converted to List(of Base)). You can however create a specialized version of the function for when T is RemoteCustomFieldValue.
Private Sub GetUserInputValues(alRemoteCustomFieldValue As List(of RemoteCustomFieldValue))
End Sub
However, if you have a class SpecializedFieldValue that derives from RemoteCustomFieldValue, and you have a List(of SpecializedFieldValue), the more generic version of the function would be called.
Also, unless you intend to completely replace the list in the code that calls the function (not just Clear and Add new items), you should probably pass ByVal instead of ByRef.
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This program can make back ups of set directories at an interval or on demand. Instructions are given as you click buttons.
<size=18>New Version: 3.1
Changes in 3.1:
- No error occurs when minutes box has a 0 in it.
- Stop auto-backup button with confirmation on press if you're sure.
- Close button checks if you're auto-backing up, and gives message accordingly.
- Timed out messagebox's timer now restarts every time it pops up and doesn't carry over.
Pic: View Pic
Virus Scan: Virus Scan Results
Download link: Download
Original thread: Clicky
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Don't spam the forums. If you want CP members to see your work, then write a proper article and submit it in the normal way.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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Virus scan results?? Yeah, right. Like I'm going to trust that from a total stranger.
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Sorry, I'm new to this forum and just looking for some people who might be interested in using my programs. If someone could help me out with, 'The normal way of posting things' that'd be great!
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Read the first message or two at the top of every forum.
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Is there a way to prevent opening a second instance of the same program using the coding with VB? My program talks to a device through the usb port and I dont want the user to be able to open 2 of the same programs.
Thanks
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I haven't got Visual Studio with me at the moment but I'm pretty sure that there is a setting in the project properties which enables you to make your application a single instance application only.
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Thanks you very much, i should have seen that. ha.
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You're welcome 
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i am designing a database for inventory the field requirements vary a lot depending on the product nature? The fields for Digital Cameras (number of pixels, maximum zoom, type of storage) would be very different from say, Hard Disks (capacity, interface type, speed, form-factor).
i hav a tables with the shema
product
proid int
prodname varchar
proattribute xml
catid int
category
catid int
catname vachar
prodincatattribut (xsd)
how can i be to able to store the attribute for a category of product as prodincatattribut (.xsd) as define by user . and ties the proattribute(xml) to it. so that users can only put the values of this attribute
or any other better design approach will be appriciate
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Think templates.
Each product category should get it's own attribute template. By assigning a category to a certain product, the product will also get that category's attribute template.
My advice is free, and you may get what you paid for.
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what do you mean by attribute template
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