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Please don't use static unless you are sure that it will not create any side effect.
Consider the following program:
<code>static int i;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
i=i+1;
TextBox1.Text=i.ToString();
}
</code>
For each Button Click event, the value of "i" is incremented and displayed in the TextBox.
I have clicked the button 5 times and the text box shows 5 in it.
At this moment,when I opened another browse , copy - paste the same url
and I tried to click the button, it shows "6" in it.
So, I think that:
For the first request, an Object of the page is created and maintained in the server.
For subsequent request separate object is created for the page and is rendered to the Client,
and the static member is shared by all objects.
Regards,
Arun Kumar.A
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Thanks a lot Arun..u understood my question..and answered precisely..
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Facing prob in retriving data .
When a item is selected from dropdown its index value goes in database , now when i want to retrive value in front end
i m not able to do tht as backend has int value and dropdown in list item contains string value
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for dropdown there is a ValueField and TextField. hold the int value in ValueField and use dropdown.SelectedValue
hope this is what u asked?
Biju S
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You can convert that(string value) to Integer like this:
Convert.ToInt32("string value");
Apurva Kaushal
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hi sneha,
Do u mean..you R unable to get the value at Front End
means..U want to display the value on the form at runtime
it is type cast error
If the message is useful for U then please Rate This message...
Be a good listener...Because Opprtunity knoughts softly...N-Joy
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Thanks for u r replies ....... i have solved my problem ......Just by setting value field in list item editor to its index value .......
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Hi!
I’m getting on buttonclick event following exception
Sys.Webforms.PageRequestManagerServerErrorException
When updatepanel is used in page.
Do you have any idea to solve this exception.
I tried a lot ,I got some ways to solve it Like
1) set EnablePartialRendering to false, but it is of no use bcoz whole page is getting refreshed ,to solve this issue only I’m using updatepanel.
<asp:scriptmanager id="ScriptManager1" runat="server" enablepartialrendering="false">
2)Set EnableEventVaildation=”false” not possible bcoz server side validation wont happen.
3)disabling cache in Role Manger in web.config
i put following code snippet in web.config
<rolemanager enabled="true" cacherolesincookie="false">
<providers>
<add
name="SQLOLEDB"
="" type="System.Web.Security.SqlRoleProvider" connectionstringname="ConnectionString" applicationname="MClosetURL">
but problem didnt get solved
4) I used javascript to catch the exception at client side in script tag in aspx page , In this case I’m not getting exception but nothing is happening after that ,server side click is not getting fired
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args)
{
if (args.get_error() != undefined)
{
var errorMessage;
if (args.get_response().get_statusCode() == '12031' || args.get_response().get_statusCode()=='12030' || args.get_response().get_statusCode() == '405')
{
args.set_errorHandled(true);
}
else
{
}
}
}
yog
hui gfgh kgdgrt njjn hjgkn
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yogita charhate wrote: Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args)
{
if (args.get_error() != undefined)
{
var errorMessage;
if (args.get_response().get_statusCode() == '12031' || args.get_response().get_statusCode()=='12030' || args.get_response().get_statusCode() == '405')
{
args.set_errorHandled(true);
}
else
{
}
}
}
This block should be below the ScriptManager. Check whether you placed it in the right place.
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good morning venkatesh!!
Thank you for replying me, after much longer wait finally i got reply from someone. Actually the code I have put in my page is working
bcoz sys.webforms.... exception is not coming but server side event is not getting fired afte button click, Postback is not happening at all.
I have used script manager in master page and written code in script in the page
in which that error is comming.
Even if i tried putting this script below script manager in master page but nothng different happened.
I Think in the if condition of code below
is it enough to have statement args.set_errorHandled(true);
or something more is needed.
Pls guide I want button click event at server side should get fired after exception is handled by the following code which is not happening in my page .
thanks a lot again!
have a very nice day!!
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args)
{
if (args.get_error() != undefined)
{
var errorMessage;
if (args.get_response().get_statusCode() == '12031' || args.get_response().get_statusCode()=='12030' || args.get_response().get_statusCode() == '405')
{
args.set_errorHandled(true);
}
else
{
}
}
}
yog
hui gfgh kgdgrt njjn hjgkn
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did anybody found the solution for this ?
i am also having similiar issue.
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I want to draw your attention to the behaviour of a custom dropdown combobox such as one on:
http://www.codeproject.com/aspnet/ComboAdjustDropDownWidth.asp[^]
when the page containing it is loaded on a custom browser created using the WebBrowser Control that comes with Microsoft Visual Studio 2005. It is impossible to scroll using the vertical scrollbar. When you click on the scrollbar with an intention to scroll, it just closes. I tried this from a custom browser I created and also on another by Thomas Maxwell on Planet Source Code:
http://www.planet-source-code.com/vb/scripts/ShowCode.asp?lngWId=10&txtCodeId=5484[^]
with the same result.
On IE, its scrolling ability is OK. Is it possible that Microsoft's WebBrowser control might have some deficiencies?
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hi, my last post i have already find out how to add the record. and i manage to add the record into the Movie Table. now i hav another problem which is in my form the actor n director have a dropdown list for user to choose n if in the dropdown list the the actor cannot be found the user can type in the name. how am i goin to do the code to detact if the dropdown list is empty then go to the textbox n add the name that they have key in? below is my code which i have done so far. Thanks a lot 4 the help
Protected Sub Submit_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim Moviename
Dim Actorname
Dim Director
Dim Language
Dim Numberofdisc
Dim Studio
Dim ReleaseDate
Dim Price
Dim Quantity
Dim sql
Dim asql
Dim DBconn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;data source=" & Server.MapPath("dvd_rental.mdb"))
DBconn.Open()
Moviename = Request.Form("txtmovieName")
Actorname = Request.Form("txtActorname")
Director = Request.Form("txtDirector")
Language = Request.Form("txtLanguage")
Numberofdisc = Request.Form("txtNoofdisc")
Studio = Request.Form("txtStudio")
ReleaseDate = Request.Form("txtReleaseDate")
Price = Request.Form("txtPrice")
Quantity = Request.Form("txtQuantity")
sql = "INSERT INTO Movie(MovieName, MovieLanguage, Numberofdisc, Studio, ReleaseDate, Price, Quantity) "
sql = sql & "VALUES('" & Moviename & "'"
sql = sql & ",'" & Language & "'"
sql = sql & ",'" & Numberofdisc & "'"
sql = sql & ",'" & Studio & "'"
sql = sql & ",'" & ReleaseDate & "'"
sql = sql & ",'" & Price & "'"
sql = sql & ",'" & Quantity & "')"
asql = "INSERT INTO Actor(Actor Name)VALUES('" & Actorname & "')"
Dim dbq As New OleDb.OleDbCommand
dbq.CommandType = CommandType.Text
dbq.CommandText = asql
dbq.Connection = DBconn
dbq.ExecuteNonQuery()
Dim dbquery As New OleDb.OleDbCommand
dbquery.CommandType = CommandType.Text
dbquery.CommandText = sql
dbquery.Connection = DBconn
dbquery.ExecuteNonQuery()
DBconn.Close()
DBconn = Nothing
Response.Redirect("WebAddResult.aspx")
End Sub
<title>WebAdd.aspx
function Table1_onclick() {
}
function Text1_onclick() {
}
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<asp:label id="AddNewDvd" runat="server" width="240px" designtimedragdrop="8" font-bold="True" font-size="14pt" font-names="Times New Roman">Add new DVD Record | | | | |
<asp:label id="Moviename" runat="server" width="112px" font-size="14pt">DVD Title: |
<asp:textbox id="txtmovieName" runat="server"> | |
<asp:label id="Actor" runat="server" width="112px" font-size="14pt">Actor: |
<asp:dropdownlist id="DropDownList1" runat="server" datasourceid="AccessDataSource1"
="" datatextfield="Actor_Name" datavaluefield="Actor_Name" width="132px">
<asp:accessdatasource id="AccessDataSource1" runat="server" datafile="~/dvd_rental.mdb"
="" selectcommand="SELECT [Actor Name] AS Actor_Name FROM [Actor]">
<asp:textbox id="txtActorname" runat="server"> | |
<asp:label id="Director" runat="server" width="112px" font-size="14pt">Director: |
<asp:dropdownlist id="DropDownList2" runat="server" datasourceid="AccessDataSource2"
="" datatextfield="Director_Name" datavaluefield="Director_Name">
<asp:accessdatasource id="AccessDataSource2" runat="server" datafile="~/dvd_rental.mdb"
="" selectcommand="SELECT [Director Name] AS Director_Name FROM [Director]">
<asp:textbox id="txtDirector" runat="server"> | | <asp:label id="language" runat="server" font-size="14pt" width="112px">Language: | <asp:textbox id="txtlanguage" runat="server"> | | <asp:label id="Numberofdisc" runat="server" font-size="14pt" width="145px">Number of Disc: | <asp:textbox id="txtNoofDisc" runat="server"> | |
<asp:label id="Studio" runat="server" width="112px" font-size="14pt">Studio: |
<asp:textbox id="txtStudio" runat="server"> | | <asp:label id="ReleaseDate" runat="server" font-size="14pt" width="112px">Release Date: | <asp:textbox id="txtReleaseDate" runat="server"> | |
<asp:label id="Price" runat="server" width="112px" font-size="14pt">Price: |
<asp:textbox id="txtPrice" runat="server"> | |
<asp:label id="Quantity" runat="server" width="112px" font-size="14pt">Quantity: |
<asp:textbox id="txtQuantity" runat="server"> | | | |
<asp:button id="Submit" runat="server" text="Submit" onclick="Submit_Click"> | |
ling
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what is the error you are getting?
Biju S
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hi. i did nt get any error. but when i run n press the submit button the record is not added into the database. is my connection having problem?
thanks a lot 4 helping
ling
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Regards,
Sylvester G
sylvester_g_m@yahoo.com
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Hello everyone,
How can i make fastest website or program in ASP.NET
wht should include to make fastest website or program
Thnx in advance
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fastest...does not have any tricks...
if you follow basic programming practices your application/website will be fast.
look into some optimisation techniques.......
some tips.
1) make sure you use SP and no SQL statements on code behind.
2) and in SP's make sure there are less sub queries, use joins instead. use profiler and see how much time does it take for execution.
3) inside code behing take care of all the loops and functions.
4) use javascript/ajax
5) avoid repeatable codes......
etc etc..........
Biju S
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The Knowledge wrote:
wht should include to make fastest website or program
Fastest? Just a page with:
<br />
<br />
<p>Hellow world!</p><br />
<br />
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I have a web application which uses a c libraby. The c librabry is mapped using another c# library.
On running many applications concurrently the c library dll is getting locked
Can anyone tell what could be the problem?
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Hi, I need to open a calender popup window on click of an image...the popup width and height is set correctly. I need to show the popup at center of the screen...on any machine with any resolution the popup must open at center of the screen...
in the javascript function, i have:
ChildWindow = window.open('frmCalender.aspx?FormName=' + document.forms[0].name + '&CtrlName=' + CtrlName, "PopUpCalendar", "width=200,height=210,toolbars=no,scrollbars=no,status=no,resizable=no,titlebar=no");
How to make the popup open at center screen?
Kindly do help me..
Thanks,
Dee
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Add top and left attributes
ChildWindow = window.open('frmCalender.aspx?FormName=' + document.forms[0].name + '&CtrlName=' + CtrlName, "PopUpCalendar", "width=200,height=210,toolbars=no,scrollbars=no,status=no,resizable=no,titlebar=no,top=300,left=350");
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Hey all,
Can some kind sole please tell me how I write to a panel (using c# in .net)
from a page load event (the page load is irrelevant, it could be any event).
Basically I have a list of links being created as the page loads and I want them to be in one of two panels and I can't seem to find the answer anywhere.
any help will be appreciated
mark
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use oninit event of page to do this
Regards,
Sylvester G
sylvester_g_m@yahoo.com
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ok, thanks for that but its not where to write the code thats the problem.
Its what to write that I can't seemto find.
I have a panel called Panel1 and a panel called Panel2.
For layout reasons I have placed my web controls in Panel2 using VS2005, not a problem there.
When I load the page I am using the .aspx.cs file to generate a loop of files in a folder and write the list of them inside Panel1.
if I just response.write the it'll always appear at the top left of my page above my header etc, so I want to specifically write into Panel.
I tried out of desperation to write the whole page in the code behind page (everything between the body tags!) but of course then my webcontrols don't yet exist for VS to build the site.
Any other suggestions pleease?
thanks
mark
-- modified at 10:56 Tuesday 12th June, 2007
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