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The black hats did hire recently?
Failure is not an option - it's built right in.
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Hi,
Am trying to access a web sevice developed in java, but i get the below error.
"Reference to a non-shared member requires object reference."
can anyone help on this..
Thanks in advance
where there is a will there is a way
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The message is clear
NasimKaziS wrote: Reference to a non-shared member requires object reference."
you need an instance of the object in order to access a non-shared member. Maybe some code post will help us (and you).
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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code used:
Imports WSDemo.demoref
Public Class Form2
Dim mservice As New MTVAS
Dim basicDesc As New BCDT()
Dim mn As New TVAMT
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
mn.originID = "test"
mservice.importTVAO(mn)
End Sub
End Class
Error:
Reference to a non-shared member requires an object reference.
If i double click on the error it takes me to the Reference.vb file underlined code as below
<system.xml.serialization.xmlattributeattribute(datatype:="integer"), _
="" system.componentmodel.defaultvalueattribute("10")=""> _
Public Property preferenceValue() As String
Get
Return Me.preferenceValueField
End Get
Set
Me.preferenceValueField = value
End Set
End Property
End Class
The first statement of the above code is highlighted.
Hope this helps
------------------------------
where there is a will there is a way
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NasimKaziS wrote: preferenceValueField
Is this an instance field, or a shared field. You use it as an instance field. However, the compiler error indicates it is actaully a shared field.
So, it should either be an instance field (remove the Shared keyword from its definition)
OR
the property needs to be marked as Shared and the Me. in the getter and setter need to be removed.
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Hi,
I have an button in my vb.net form, to show my help file (sample.chm). But I need to show only one instance of that help file, even if the user hits the button second time it should open the existing help file which already opened not the new instance.
Thanks in advance.
Be simple and Be sample.
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Will it be easy to disable the button when a new instance of the help window is opened and enable it when done with the help window.
"A good programmer is someone who looks both ways before crossing a one-way street." -- Doug Linder
coolestCoder
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Yes, but how do i know whether the help window is opened or not - to enable/disable the button.
Be simple and Be sample.
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Hi there
This is my first post on this excelent site. I have an application which today is a pretty standart application. Theres a form, and theres an object doing all the work.
Well, now i have to split it up. I have to make the work-process as a "server-side" service, or something similar.
And the interface a "client-side" interface, which can do some basic controlling of the "server-side application" and also receive status from the server.
The server can run on multiple machines, on multiple LANs, even on multiple Domains.
When i open the UI i have to be able to monitor each and every server, and the works thats being done there.
Now that interface... The interface can actually also be instantiated on multiple machines.
The server application is a production tool, used on plants throughout the world. Each plant can have X amount of machines running the production tool. Then let's say there as production planner who wants to monitor the production, localy at the plant. He logs on and receives messages from all the machines. He can also click on a process and end it (due to errors or what not).
Another chief of production planning at HQ also wants to see whats going on in Italy, but he resides in germany. So he also just opens his Interface.
I've thought about using Remoting or MSMQ. But if anyone has any other options for me to use, please tell me about it, and maybe refer me to some articles.
The application is developed in VB.Net.
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I think you should use web services for this. The client application can be windows application or even a web application. If it is a web application then there is no need to install it on every client machine and it will be easier to maintain.
"A good programmer is someone who looks both ways before crossing a one-way street." -- Doug Linder
coolestCoder
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Guys, I want to put my reports on a web service, or single network location, from where I will be able to download a copy of the report, then load it, at runtime to use in a desktop application.
I tried to use the DownloadFile method of WebClients to directly download the *.rpt file, but IIS is not returning the file – any suggestions?
Trying to use web browser or free download manager to see if I can download the file brings up an unknown server error. Permissions were changed to allow read & write, anonymous access granted, no change.
I also tried to use the publish as web service feature on the report, when i load the *Service.asmx file in a browser, I will see the shared methods of the report in the browser , but attempting to load the reportdocument with that url fails, attempting to download that file downloads the HTML source for the page viewed in the browser, which cant be used to load into reportdocument .
Am I trying to do the impossible here?
There's no dumb question
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I have a project that uses a web service to download report files. So it is possible. One issue we had was that we had to setup the MIME type of .rpt in IIS of the machines that hosted the web service. It won't let users download a file that it doesn't recognize the extention of. You could test this theory by trying to download a .txt file (or other very common file extention type) instead and seeing if it works.
Hope this helps.
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(VB.NET) Displaying data in combobox using oledbdatareader.
Thanks
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Dim DBConnectionString As String = ""<br />
Dim MyTableName As String = ""<br />
Dim MyCommandText As String = ""<br />
Dim MyReader As System.Data.OleDb.OleDbDataReader<br />
Dim DBCommand As New System.Data.OleDb.OleDbCommand<br />
Dim DBConnection As System.Data.OleDb.OleDbConnection<br />
Dim MyDataSet As DataSet<br />
<br />
'Call some helper functions.<br />
DBConnection = GetConnection()<br />
DBConnectionString = GetConnectionString()<br />
<br />
'Set connection and open<br />
DBConnection.ConnectionString = DBConnectionString<br />
DBConnection.Open()<br />
<br />
'Set command.<br />
MyTableName = DBTableName.ToString()<br />
MyCommandText = " select * from " & MyTableName & " "<br />
DBCommand.CommandText = MyCommandText<br />
<br />
'Get a data reader.<br />
MyReader = DBCommand.ExecuteReader()<br />
<br />
‘Populate your combo with MyReader<br />
While MyReader.Read<br />
MyCombo.Items.Add(MyReader("FieldName"))<br />
End While
Tirtha
"A man can ride on your back only when it is bent....."
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Hi i have intime(08:45) and outtime(20:16)=>24 hours format...,
Dim intime As DateTime
dim outtime as datetime
Dim tspan As TimeSpan = outtime.Subtract(intime)
use this i can get total work hours for a day shift..........,
suppose if its night shift.........,
intime(19:45) and outtime(08:00)=>24 hours format...,
then how i can get total work hours......,
plz help me..................
Magi
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Not sure, but try this: Should return the absolute value of the time difference, regardless of negativity.
math.abs(tspan.hours)
Abs is short for absolute value (and it is an available math function), expressed in mathematics as |value|.
Eg.
|8| = 8
|-8| = 8
Posted by The ANZAC
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hey i didnt ask how to show absolute value
see my ques is i have intime(19:45) and outtime(8:53)
so if i use time span then i am getting value (10:59)
but exact answer is (13:08)
now u got it my ques...........,
i need difference between two times.............
Magi
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well subtract the intime(19:45) from (24:00) then add it to the outtime. This is the basic premise, i'll leave the task of applying it to your code, up to you.
Posted by The ANZAC
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if u have the tspan established as the intime subtracted from the outtime then tspan should be accurate. Thats a little confusing. I'm not sure why this is happenning.
Posted by The ANZAC
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ya it will give accurate time.........
when its in 00:00 to 23:59
but if ur input is night shift........
like what i said before intime(19:45) and outtime(08:16)
then its giving error output........,
i want exact output for night shift work hours......
Magi
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How are you creating your date objects? If you created them correctly then the difference should be working without a problem. Look at this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'T1 is March 20 2007, at 19:45
Dim t1 As New Date(2007, 3, 20, 19, 45, 0)
'T2 is March 21 2007, at 8:53
Dim t2 As New Date(2007, 3, 21, 8, 53, 0)
'The timespan is 13:08...which is correct
MsgBox(t2.Subtract(t1).ToString())
End Sub
If your still having trouble try posting a larger sample of code.
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perviously I convert a byte array to string/text and store into database, like coding below:
cmd.Parameters("@LeadFormControls").Value = System.Text.Encoding.UTF8.GetString (bytLeadFormControls)
how do I convert back string/text back to a byte arrry when i retrieve it from database.
Any idea?
Angela
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Typically, you'd use the StringBuilder[^]class.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Here is a class I found and modified to encrypt/decrypt. Hope it helps you.
Imports System.IO
Imports System.Text
Imports System.Security.Cryptography
Public Class Encryption64
Private key() As Byte = {}
Private IV() As Byte = {&H11, &H22, &H33, &H44, &H55, &H66, &H77, &H88}
Public Function Decrypt(ByVal strToDecrypt As String, _
ByVal strEncryptionKey As String) As String
'*******************************************************
' This function will:
' - Accept a string and encryption key
' - Decrypt and return the string
'
' NOTE: If strToDecrypt is from a query string,
' the Request.QueryString will have replaced
' any '+' characters with a space.
'*******************************************************
Dim inputByteArray(strToDecrypt.Length) As Byte
Dim des As New DESCryptoServiceProvider()
Dim ms As New MemoryStream()
Try
'Set key
key = System.Text.Encoding.UTF8.GetBytes(Left(strEncryptionKey, 8))
'Convert input string into byte array
inputByteArray = Convert.FromBase64String(strToDecrypt)
'Perform the decryption with memory stream object
Dim cs As New CryptoStream(ms, des.CreateDecryptor(key, IV), CryptoStreamMode.Write)
cs.Write(inputByteArray, 0, inputByteArray.Length)
cs.FlushFinalBlock()
'Convert and return decrypted byte array in memory stream into string
Dim encoding As System.Text.Encoding = System.Text.Encoding.UTF8
Return encoding.GetString(ms.ToArray())
Catch e As Exception
Return e.Message
End Try
End Function
Public Function Encrypt(ByVal strToEncrypt As String, _
ByVal strEncryptionKey As String) As String
'***************************************************
' This function will:
' - Accept a string and encryption key
' - Encrypt and return the string
'***************************************************
Dim des As New DESCryptoServiceProvider()
Dim ms As New MemoryStream()
Try
'Set key
key = System.Text.Encoding.UTF8.GetBytes(Left(strEncryptionKey, 8))
'Convert input string into byte array
Dim inputByteArray() As Byte = Encoding.UTF8.GetBytes(strToEncrypt)
'Perform the encryption with memory stream object
Dim cs As New CryptoStream(ms, des.CreateEncryptor(key, IV), CryptoStreamMode.Write)
cs.Write(inputByteArray, 0, inputByteArray.Length)
cs.FlushFinalBlock()
'Convert and return encrypted byte array in memory stream into string
Return Convert.ToBase64String(ms.ToArray())
Catch e As Exception
Return e.Message
End Try
End Function
End Class
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