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Here is an example of openread with a fileinfo
using (FileStream fs = fi.OpenRead())
{
byte[] b = new byte[1024];
UTF8Encoding temp = new UTF8Encoding(true);
while (fs.Read(b,0,b.Length) > 0)
{
Console.WriteLine(temp.GetString(b));
}
}
When the using is used the openread is closed when you reach the end of the using. So you are not closing your openread.
Ben
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Thank you for the info. I will check once again all my connections and stream readers used to read the images to DB.
Regards,
Jagadeesh
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dhulipudi wrote: foreach (FileInfo f in d.GetFiles("*.jpg"))
{
byte[] buffer = new byte[f.OpenRead().Length];
f.OpenRead().Read(buffer, 0, (int)f.OpenRead().Length);
PhotoManager.AddPhoto(buffer);
f.Delete(); //ERROR HERE!!!
}
A quick brainstorming query: Did you observe whether this FileInfo keeps an handle also?
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I want to know how should we give validation for phone numbers.
my phone number format is 0000-000-000
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There are a couple of easy ways
1. Client-side
There is a nice ASP.net AJAX control in the toolkit which offers this if you want to use it. Link - http://ajax.asp.net/ajaxtoolkit/MaskedEdit/MaskedEdit.aspx[^]
2. Regular expression validator
You could write a simple regular expression to match the input against and use a validator on the page. The regular expression would be something like
^d{4}-\d{3}-\d{3}$ (Not 100% sure of the exact syntax)
Try www.regexlib.com as a great source for help and examples of regular expressions.
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Heared of Regular expression ?
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Here is your code for Validation of Phone Number, with asp:regularexpressionvalidator
<%@ Page Language=VB Debug=true %>
<title>Validating a Phone Number with a RegularExpressionValidator Control
Please enter your phone number:
<asp:textbox
="" id="txtPhoneNumber" runat="server">
<asp:regularexpressionvalidator
="" id="regZipCode" controltovalidate="txtPhoneNumber" validationexpression="\\d{4}\-\d{3}\-\d{3}" display="Dynamic" font-name="Arial" font-size="11" runat="server
">
You must enter a phone number in the form of 9999-999-999.
<asp:button
="" id="butOK" text="OK" type="Submit" runat="server">
Regards,
Satips. ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
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Thanks, but if the first number should be either 3 or 4 so how should we give?
like 0000-000-000 or 000-000-000
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The first digit is only three.
Like wise you have to mention.
(999) 999-9999.
Regards,
Satips.
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But i have given the code as you have asked for four digit in the first as you stated.
If you want you can change the code for three.
Regards,
Satips.
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Thanks .Can we keep both either 3 or 4 in single expression.because some phone no is having 4 digit first and some having 3 digit first.
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A kamath wrote: Can we keep both either 3 or 4 in single expression.because some phone no is having 4 digit first and some having 3 digit first.
Not Both at a time go with any one.
Mostly the standard format is (999) 999-9999. like this only.
The first three numbers inside braces denotes the Code and the other seven numbers will represents the other.
Everywhere you see only 10 didgit phone number only.
Regards,
Satips. ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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Welcome 
Regards,
Satips.
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Hi
what is the property name for reading 'web page' of the user from active directory.
may i have complete list of the property for windows server 2003?
Thank you
Jayesh Talsaniya
Jayesh Talsaniya
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hi all
dt is datatable
if i assign
session["demo"] = dt;
datatable have 100 rows data
so where will The data in session["demo"]("100 rows data") store ?? Server or client site
And where is position data store ??
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You really should not do this.
The session data is stored on the server (only the session ID is passed back and forth between client and server as a cookie - the server can then use this ID to retrieve the relevant session data.)
You should only ever store small amounts of data in your session object - imagne the server resources consumed if you have, say, 100 sessions at once... imagine 1,000 sessions.... imagine your server siezing up...
Fred
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thank all reply to me
i could understand is
if i have datatable (dt) contain 100 rows
and i assign session["demo"] = dt;
Data in Session["demo"] mean is 100 rows data have store in server and client will have session id of itseft on server
when client request to server on the server will check session id on client with session id on server and then assgin data by session store on server;
ex: datatable dt1 = (datatable)session["demo"];
but i dont know if data of session store on server so where is it store ???
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Yes, the session data is stored on the server. Part of that data is a unique SessionID which is assigned by the server at the start of each new session. This (and only this) is stored on both the server and the client - though only temporarily in the form of a non-persistent cookie - and is passed back and forth between the two. This allows the server to know which session it is dealing with each time a page request comes in, and to serve up the rest of the apprpriate session data (eg your datatable)
I would stress again though that you really should not get in the practice of storing such large amounts of data in your session object. You might get away witrh it for really small sites (ie sites with very few hits, or users) but if/when your site gets busy you are asking for trouble. Try to find an alternatiove solution.
Fred
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AnhTin wrote: And where is position data store ??
What do you mean by position data store?
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Never use Session in this way 
So Session is for storing the data that is required during the post back or between pages and it stored at the server side
So don't assign datatable value to Session
Thanks and Regards
Sandeep
If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "
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Session is always stored on the server. The SessionID is the key in identifying a particular user session.
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I have a gridview that is populated via a datatable. What I am wanting to do is take the raw data from the datatable and create a set of bound columns and populate those columns with the values in the datatable. my code currently is as follows.
<br />
Dim datValTable As DataTable<br />
<br />
' Create a dataTable to populate with the data Returned from the select statement.<br />
Dim datTable As DataTable<br />
datTable = New DataTable("ViewTable")<br />
<br />
datTable = PopulateDrillDown(datTable)<br />
GridView1.DataSource = datTable<br />
GridView1.DataBind()<br />
GridView1.Columns.Clear()<br />
<br />
Dim bFld As BoundField = Nothing<br />
bFld = New BoundField()<br />
bFld.DataField = "view_id"<br />
bFld.HeaderText = "ViewID"<br />
GridView1.Columns.Add(bFld)<br />
<br />
GridView1.DataBind()
This adds the ViewID column to all the columns from the datatable. which is obv not what i want. I need to be able to create a subset of columns from the datatable and populate my gridview with that. Can anyone point me in the right direction. Do i need to create a new datatable and populate that then bind on the gridview?
Cheers
Ian
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