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I need to serialize some objects of a certain class all in one file..so I loop on every object and call a function called WriteToFile()
public static void WriteToFile(SerialCircle shape, String filename)
{
Stream str = File.OpenWrite(filename);
SoapFormatter formatter = new SoapFormatter();
formatter.Serialize(str, shape);
str.Close();
}
now the problem is that everytime I call the function..a new object is replaced by another object written in the file..how can I open the file and append to it new objects??
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Hi there,
The File.OpenWrite method uses the FileMode.OpenOrCreate to open the specified file, and it does not seek to the end of the file, so in this case you should use the File.Open method instead with the FileMode.Append as the method parameter.
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Hi
i want to have two headers for my datagrid for example i have 5 column in my datagrid that they have headers.and i want to group them and get them another header with just one topic for 5 column(i mean i want to merge them)
can u help meeeeeeeee
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You can use table for the first header.
For eg.
In the 1st row of the table type 1st header
In the next row place the datagrid
Hope this will solve your problem.
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but my datagrid be changed some times it hase 5 column and some times has less than that or sometimes has more than that
i can not do this work
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Refer
www.codeproject.com/aspnet/MergeDatagridHeader.asp
All the best
Lucky
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Hai,
I am using a web page and using response.redirect ,i am forwading the direction to the next page.
Is it possible for me to cut off the tool bar in the second window.
Please tell something regarding this.
Jeeva.
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No. You have to use window.open to open a new window to be able to change the settings of the window.
---
b { font-weight: normal; }
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not sure if you can create an window.onload = function() { // hide toolbars etc here } to remove what you want from the window, but it will initially be shown if this is to work, i've never tried it.
hth,
g00fy
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Nope.
---
b { font-weight: normal; }
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thanks for the heads up,
i *will* never try it now 
regards,
g00fy
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Suppose the question isn't how, but WHY do you want to do this...
I find that in general, if you're asking for something as whacky as this, then you probably shouldn't do it - one of the main points of doing web dev is that almost EVERYBODY knows how to drive a webbrowser - it performs in a familiar way and uses well known paradigms....if you go doing something whacky like removing toolbars, then users loose this familiarity...
Try to look for another site that does this - and if you can't find one, ask yourself WHY 
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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Hi Every one
Can any one please tell me how to login to FTP site By programetically
I am trying on this way
But it is giving some errors like
"FtpClient not declered"
MYCODE IS
-------------
Dim ftp As FtpClient = Nothing
Private Sub UploadPicture(ByVal imagePath As String)
Dim FtpServer As String = ConfigurationSettings.AppSettings("FtpServer")
Dim FtpUserName As String = ConfigurationSettings.AppSettings("FtpUserName")
Dim FtpPassword As String = ConfigurationSettings.AppSettings("FtpPassword")
Dim callback As AsyncCallback = AddressOf CloseConnection
ftp = New FtpClient(FtpServer, FtpUserName, FtpPassword)
ftp.Login()
ftp.BeginUpload(imagePath, callback)
ftp.Close()
End Sub
Please Help me
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
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Is your FtpClient a third-party component?
In .NET 2.0, you can use the
FtpWebRequest[^] object for FTP functionality.
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Thx for replying
But iam still have doubt in this
Plz can you tell me clearly
CODE
------
Public Shared Function DisplayFileFromServer(ByVal serverUri As Uri) As Boolean
If Not (serverUri.Scheme = Uri.UriSchemeFtp) Then
Return False
End If
Dim request As WebClient = New WebClient
request.Credentials = New NetworkCredential("anonymous", "janeDoe@contoso.com")
Try
Dim newFileData As Byte() = request.DownloadData(serverUri.ToString)
Dim fileString As String = System.Text.Encoding.UTF8.GetString(newFileData)
Console.WriteLine(fileString)
Catch e As WebException
Console.WriteLine(e.ToString)
End Try
Return True
End Function
---------------------
In the code
("anonymous", "janeDoe@contoso.com")
In this what i have to give
I have 1 FTP with
------------------------
ftp.someone.com
username = some
password = one
-------------------------
In that what i have to give
and
I tryd but it is giving this error
"Object reference not set to an instance of an object."
Plz help me
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
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What is CVS and what is the use of CVS?
Any web link for learing CVS?
Pls Help Me
Thanks
PAUL
PAUL
-- modified at 7:15 Saturday 22nd April, 2006
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Hi there,
I've read once an article about the questionmark in the querystring and the problem with it concerning searchengines. Thus a link like "http://myserver.com/text.aspx?id=text1" will not be followed by searchengines. The article offered a way of turning the above url into something like "http://myserver.com/text.aspx/text1". It's quite some time ago and searching for the article didn't help.
Does anyone know how to do it and if it can be applied to an existing website without messing everything up? Are there different options?
Thanks in advance!
/matthias
I love deadlines. I like the whooshing sound they make as they fly by.
[Douglas Adams]
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Hi
I am trying to retrive subfolders form a folder
And i want to display the infomation in a datagrid But in my code it is giving some error
Please can any one check this and help me
MY CODE
-----------
Dim al = New ArrayList
Dim fs, fo, x
fs = Server.CreateObject("Scripting.FileSystemObject")
fo = fs.GetFolder("C:\test\")
If fo.Length > 0 Then
For Each x In fo.SubFolders
Dim i As Integer
For i = 0 To fo.Length - 1
al.Add(fo(i).ToString.Remove(0, fo(i).ToString.LastIndexOf("\") + 1))
Next
al.Sort()
DataGrid1.DataSource = al
DataGrid1.DataBind()
Next
fo = Nothing
fs = Nothing
End If
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
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Standard question #2:
What error message do you get?
---
b { font-weight: normal; }
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For the 1st question i am getting this error
Error :
Public member 'Length' on type 'IFolder' not found
-------------------------------------------
This way also I tryed
But it not displaying in datagrid properly
MY CODE
----------
Dim fs, fo, x
fs = Server.CreateObject("Scripting.FileSystemObject")
fo = fs.GetFolder("c:\windows\")
For Each x In fo.files
'Print the name of all files in the test folder
'Response.Write(x.Name & "
")
DataGrid2.DataSource = x.name
DataGrid2.DataBind()
Next
fo = Nothing
fs = Nothing
Thx for replying
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
-- modified at 4:40 Saturday 22nd April, 2006
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kirthikirthi wrote: DataGrid2.DataSource = x.name
DataGrid2.DataBind()
There's your problem with the above example - you're trying to bind a datagrid to a single object - the File object X.
You need to bind to a collection object that enumerates IEnumerable (I think it's called - Guffa lol?), such as a dataset. A file is a single object, not a collection, so ....DataSource = x.Name is nonsense.
Oh yeah - only need to bind the grid once too- not every iteration through the loop.
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
-- modified at 4:28 Sunday 23rd April, 2006
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Hi all. Has anyone put a web farm together and if that's you then do you have any advice? We are going to keep the session in SQL server. One of our issues is that we used to keep an Employee object in the session so we don't have to keep going back to the database. By going to SQL Session state, that object must be serilizable to write it to the database. Of course now it's in the database which is what we were trying to avoid in the first place so we might at well not store the object in session and just keep calling the database. The problem is that this will probably double our sql calls. Any thoughts?
E=mc2 -> BOOM
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Hi,
In C#.Net 2003 under Web Farms Best Practices, recomendations and Caveats it says the following: (if you want a copy of the eight pages or so let me know)
------------------------------------------------------------------------------
As was mentioned earlier in the chapter, ViewState can add a considerable amount of overhead to a page. It can take a relatively long period of time to decrypt and verify the ViewState form variable. In addition, depending on how much information is stored in ViewState, it can actually increase the downloadtime of a webpage. On many projects pages store a complete DataGrid control in the ViewState. For large results, the ViewState form variable can actually consume several hundred kilobytes of space, sometimes reaching over 1 MB of size. On a LAN, you might not complain too much about that, but over a slow or weak internet connection, users will certainly notice that pages ttaking to long to load and render.
It's recommended that you disable ViewState unless you are sure that you absolutely need the features it's provides. In fact you should probably disable ViewState throughout your entire web site as a rule, and turn it on only when you have discovered that no alternative will work. Programmers often store data in ViewState to avoid requerying that same data on subsequent loads of that page. Get out your stopwatch and measure it. Which take longer? processing the download and upload of ViewState, or querying the database on the back-end? before you quickly turn to ViewState as a catch-all to make things easier, examine your options regarding your database and server-side caching to see wheher you can avoid using it.
If you are using out-of-process session state, you need to be aware of the crucial fact: Out-of-process session state perform two tasks that are both considered performance issues. The first task is that it makes a network connection to a server somewhere.
Although it might be a fast connection, any off-machine connection will alway's be slower than a in-process data operation. The second task, all out-of-process state management, is acomplished via serialisation. The more complex an object is, the larger its serialized representation and the longer it takes to serialize and deserialize on the network stream. In particular, DataSets (prior to .Net 2.0) serialize into extremely large XML representations that can potentially cause severe delays in state management. Also keep in mind that connections are made to the session state provider at both the beginning and the end of page redering, so any large object that you have in session state can potentially slow down the pipeline twice per page view.
It has been mentioned before, but it's worth mentioning again: Any object that is stored in out-of-process session state has to be serialized. You must be able to restore the state from a serialized graph for that object to work properly with session state. Keep the data you store in the session small and simple. Sticking to the base.Net Framework types will make things a lot easier (and faster).
Application State is an area that can easily be abused. Because the state data stored in the AppDomain object is Globaly scoped throughout the AppDomain, any large data there is a burden on the garbage collector. Large data will stay in memory for an extremely long time, even if you don't use it. Keep your use of this dictionary (many consider it a crutch to be avoided) to a minimum. If you have to use it, store primitive types or small classes that are easily (and quickly) serialized (no DataSets).
If you truly need shared application state. resist the urge to do something cool and fancy and rig up some kind of Remoting System. Something like that wil probably generate a lot of devellopment work and maintenance headache, when you probably could have used a table in your application's database for application state information. Granted, there are situations in which Remoting or using web services to synchronise application data within a farm is necessary, but that situations are rare and usally not practical
------------------------------------------------------------------------------
With friendly greetings,
Eric Goedhart
Skype: eric-goedhart
Deep in the fundamental heart of mind and Universe there is a reason.
-Slartibartfast
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