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Hi everybody,
I've made a winapp that displays items in a storage. Each of these items is implemented as a control and is added as childcontrols to a parent, a StorageControl. With this design I can have click events for each item etc.
Now I want to convert this winapp into a webapp and have thought about implementing it in a similar way. I can make a "StorageControl", that is renderd as a DIV-tag with a specified width and height. I can also add items as childcontrols to this StorageControl. But how can I specify these items position in the DIV as X,Y-coordinates?
Is it possible at all?
Or is there any other smart solutions to my problem? A clickable imagemap?
Thanks...
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Hello,
I have a gridview with checkboxes(inside Gridview) and a Button contol(outside of Gridview)with BtnDeleteSelected
My aim is to get the value of 1st row 2nd column in gridview(1st Column is CheckBox control) and 2nd column is pid value.I want 'Pid' Value
i wrote this code
int pID = Convert.ToInt32(gv.DataKeys[row.RowIndex].Value);
it is showing this error
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Pinna
modified on Thursday, May 22, 2008 9:15 AM
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haripinna wrote: GridViewRow row = gv.Rows[i];
CheckBox chkbox = (CheckBox)row.FindControl("chkSelect")
Oh what code have u posted. I can`t get head or tails out of it..Pls post the entire code so that we can understand your logic implementation.
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Hello,
Thanks for your response.
I got answer for that question..
now my problem is
I have a gridview with checkboxes(inside Gridview) and a Button control(outside of Gridview)with BtnDeleteSelected
My aim is to get the value of 1st row 2nd column of gridview(1st Column is CheckBox control) and 2nd column is pid value.I want 'Pid' Value
i wrote this code
for(i=0;i<gv.rows.count;i++)>
{
GridViewRow row = gv.Rows[i];
CheckBox chkbox = (CheckBox)row.FindControl("chkSelect")
if(chkbox.checked)
{
int pID = Convert.ToInt32(gv.DataKeys[row.RowIndex].Value);
}
}</gv.rows.count;i++)>
it is showing this error
Index was out of range. Must be non-negative and less than the size of the collection.<br />
Parameter name: index
Pinna
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Try this
string strContactId = "" + gvContacts.SelectedDataKey["ContactId"];
or
string strContactId = "" + gvContacts.SelectedValue;
You have to write these Code in OnSelectedIndexChanged event of gridview.Initially you have to set Datakeynames="ContactId" in gridview property.
i hope it wil work for u
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at the moment you are only finding the checkbox
Wheres the code which should be setting the checkbox to true or false
Can you explain a bit more?
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Hey all,
Weird one...
I have a Nav bar at the top of my shop page, it is dynamically created from a dB (new Hyperlink control for each link)
This has always worked fine, until I add a 5th link, like I have at the moment. see http://www.brora.co.uk - the Sale Hyperlink.
If you are using IE6 not sure about below, don't have a copies of these, when you click the 'Sale' Link, it loads the page, then 'chops off' the content from below that. When you click it again it all works just fine.
It only happens on this link, as it is dynamicaly created it has the same settings as the others.
Has anyone else ever had a problem like this? if so do you have a solution?
Any help would be apprecited ASAP as this is a live site!
Mark
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Ok, well I suspected it was css issues and it was, still aweird one though...
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Hi,
I embed flash(.swf)file in my .aspx page. Its working good in Firefox,Opera and safari.
But i browse in IE it's not working that means it's loading continuously but no images
displayed.This is my code
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0">
id="MyMovie">
<param value="mDirectCP.swf" />
<embed src="mDirectCP.swf" width="630px" height="500px" />
I hope ur's reply.
Thanks
Every Successful Person Have A Painful Story
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Hi,
I need a software in .Net which can transfer data of credit card swipe machine to the software.
Thanks,
Mini
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I would start by visiting google and looking there
www.google.co.uk
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This has nothing to do with ASP.NET. The software you want, would have to come with the swipe machine.
Christian Graus
Please read this if you don't understand the answer I've given you
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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 i wanna hide the close button in my popup window without fullscreen
im using code like that but it doesn't work
Hyberlink1.Attributes.Add("OnClick", "window.open('Edit_Session.aspx',null, 'titlebar=no,menubar= no');");
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You cant disable this button
However try:
window.open('Page.aspx', '', 'Fullscreen=yes');
This will open it full screen so that the close and minimize buttons will be hidden
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Hello Friends
How Can i dynamic add item in context menu and open Context Menu ( of telerik component ) on Grid row click through javascript .
Piyush Vardhan Singh
p_vardhan14@rediffmail.com
http://holyschoolofvaranasi.blogspot.com
http://holytravelsofvaranasi.blogspot.com
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Hi,
Im using Webservice to implement autocomlpeteextender but im getting the folling error..any namespace i need to add or any changes have to do in the web config? im struggling? im getting the folling error..
Error 1 Attribute 'System.Web.Script.Services.ScriptService' is not valid on this declaration type. It is valid on 'class, interface' declarations only.
Here the following code which i have used...
=================================
using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Data;
using System.Data.SqlClient;
/// <summary>
/// Summary description for Auto
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Auto : System.Web.Services.WebService {
public Auto () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public string HelloWorld() {
return "Hello World";
}
[System.Web.Script.Services.ScriptMethod]
[System.Web.Script.Services.ScriptService]
[WebMethod]
public string[] GetCountryInfo(string prefixText)
{
SqlConnection con = new SqlConnection("uid=srp;pwd=12345;server=kagserver;");
//int count = 10;
string sql = "select * from student_information Where s_Name like @prefixText";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
da.SelectCommand.Parameters.Add("@prefixText", SqlDbType.VarChar, 50).Value = prefixText + "%";
DataTable dt = new DataTable();
da.Fill(dt);
string[] items = new string[dt.Rows.Count];
int i = 0;
foreach (DataRow dr in dt.Rows)
{
items.SetValue(dr["s_Name"].ToString(), i);
i++;
}
return items;
}
}
=============================
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Autocomplete.aspx.cs" Inherits="Autocomplete" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/Auto.asmx" />
</Services>
</asp:ScriptManager>
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<cc1:AutoCompleteExtender ID="AutoCompleteExtender1" TargetControlID="TextBox1" MinimumPrefixLength="1"
ServicePath="Auto.asmx" ServiceMethod="GetCountryInfo" EnableCaching="true" CompletionInterval="200"
runat="server">
</cc1:AutoCompleteExtender>
</div>
<div class="buttonwrapper">
<a class="squarebutton" href="#"><span>Submit</span></a> <a class="squarebutton"
href="#" style="margin-left: 6px"><span>Reset</span></a>
</div>
</form>
</body>
</html>
Rgrds
Kanna
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Dotnetkanna wrote: im struggling? im getting the folling error..
You're kidding right? I mean the error message explains exactly what the problem is so why are you asking about namespaces? 
led mike
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Hi Gurus,
I'm trying to create a website with scalability in mind but I'm a little stuck with ASP.NET authentication (Forms Authentication) because I simply don't know much about its internals. I wonder how high traffic websites like myspace.com handle authentication. Most pages in my application are public (i.e. accessible to anyone authenticated or not), only a few pages are only available to authenticated users. I'm basically trying to find answers to those questions:
- As far as I understand from the documentation, ASP.NET Forms Authentication authenticates every request, ie. checks for the authentication cookie and if found it extracts the authentication ticket and decrypts it, is my understanding correct? And if so, can't this potentially affect performance esp. the decryption part? Is this needed for renewing the authentication cookies? (as I believe the ticket issuance time is saved inside the ticket so probably the cookie has to be decrypted anyway to get the ticket issuance time from the ticket then compare this to the current time and decide whether the cookie has to be renewed). If this is an absolute necessity (I'm talking about authenticating every request for the sake of cookie renewal), can we use an encryption algorithm with low overhead (in web.config, authentication element), still efficient? which encryption algorithm would you recommend in this case?
- Is there any way I could make ASP.NET only authenticate requests to protected pages (=pages that are only accessible to authenticated users), BTW, in my application I don't use roles I only make those pages accessible to any authenticated user. Actually I read somewhere that I could write the code needed to authenticate the user only in those protected pages but I wonder whether I will have to handle cookie renewal in this case (this is one thing that's automatically handled by ASP.NET forms authentication)
- Any ideas how I can get the last login with a persistent cookie? In my application I want to allow users to use the "remember me" option (which will send a persistent cookie to the user's computer), now the user doesn't log on explicitly anymore, so I can't put my code that saves the last login to the database in the login page hence it's not used by the user anymore, so how can I do this? I'm thinking about one way to do it but I'm a little worried about how this could impact performance, anyway, here's how .. in my application I need some user related data so I could probably get the data from the database whenever a user with a persistent cookie visits the site (probably FormsAuthentication_Authenticate is the most suitable place) and also write the last login to the database then cache the user data in ASP.NET's cache using the user login retrieved from the authentication cookie as the key with a sliding expiration (let's say something like 30 min or make it equal to the authentication session), if the user visits another page within this period (ie. before the data is removed from the cache), I get the data from the cache and all is ok, but if I can't find the data in the cache (ie, returns null) then I update the last login in the database and get the user data again from the database and cache it in ASP.NET's cache. What do you think about this solution? Do you have any better ideas? I know I could use sessions but I read somewhere that if you handle the session_start event the session is created anyway even if you don't have and data in the session which is not really a good idea (this mean that a session object will be created for all site users authenticated or not).
- what about security? Assume my encryption was broken by some hacker, can't the hacker insert a different user login in a ticket and encrypt it with my broken encryption key? In my application I'm using the user email address as the user login, so, probably a hacker can insert a random email address (from an email list for example) in the ticket and try to access the account of that user, if the user happens to have an account on the site, this will work. My question is that, is the cookie encryption the only way for protection? Because I believe it still can be broken no matter how good it is and in this case it can be a disaster as described above. I'm thinking about something to prevent this, I might probably add something like a random code in the users table in my database (let's call it a security code) and include that code along with the user login in the authentication ticket (separate it from the user login by some character like a pipe for example or put it in the userdata section in the authentication ticket) and whenever we get the data of this user from the users table, we check for the security code along with the user login, for example:
select userid, {other fields here} from users where userlogin = {user email retrieved from the authentication ticket} and SecurityCode = {security code retrieved from the authentication ticket}
Do you think this can be reliable?
Beside the questions above, if you have any resources on the internals of ASP.NET forms authentication, I'd be very grateful if you shared them with me. I've been searching the net for a couple of days but all I can find so far is only about how to use ASP.NET forms authentication in your applications e.g. how to configure it in web.config .. etc but nothing about its internals. I also tried to use .NET Reflector (specifically to disassemble FormsAuthenticationModule) and gained some understanding about how it works internally but not enough to figure it all out.
Sorry for my really long post!
Your help is really much appreciated ...
modified on Thursday, May 22, 2008 7:09 PM
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Hi all,
I have a Gridview with with 4 columns....Brand,Category,Item,Stock
The user wants that the for all items belonging to same Brand and category, the Brand and Category needs to be shown only once. For this i wrote the following code but it doesn`t seems to work...
Public Class GridItem
Dim _brand As String
Dim _cat As String
Public Sub GridItem()
'Constructor
_brand = ""
_cat = ""
End Sub
Public Property Brand() As String
Get
Return _brand
End Get
Set(ByVal value As String)
_brand = value
End Set
End Property
Public Property Category() As String
Get
Return _cat
End Get
Set(ByVal value As String)
_cat = value
End Set
End Property
End Class
Sub ItemGrid_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim GI As New GridItem
GI.Brand = e.Row.Cells(0).Text
GI.Category = e.Row.Cells(1).Text
If uniquearr.Contains(GI) Then
e.Row.Cells(0).Text = ""
e.Row.Cells(1).Text = ""
Else
uniquearr.Add(GI)
End If
End If
End Sub
uniquearr is declared global.Any help would be appreciated
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I will answer in C#, if you don't understand tell me.
Your problem is the following:
(1) Contains uses Equals.
(2)
GridItem g1 = new GridItem("bla", "bla");
GridItem g2 = new GridItem("bla", "bla");
if (g1.Equals(g2))
Response.Write("equal");
else
Response.Write("not equal");
This returns not equal. Why?
If the GridItem does not implement an Equals function, it will check the equality of the HashCode.
Response.Write(g1.GetHashCode().ToString());
Response.Write(g2.GetHashCode().ToString());
Two different hashcodes.
So how do we solve this?
Add an Equals function to your GridItem:
public override bool Equals(object obj)
{
if (obj == null && this == null)
return true;
else if ( (obj == null && this != null ) || (obj != null && this == null))
return false;
else if (this.Brand == ((GridItem)obj).Brand && this.Category == ((GridItem)obj).Category)
return true;
else
return false;
}
This first checks if the object are null, and then checks if the contents of the objects are the same.
Now the above equation of g1.Equals(g2), will return true.
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I want to show tooltip for textbox control in balloon format.
Is it possible?
I searched on net,but there are examples for windows form.I want it should be on webform.
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Thanks for reply..
But i dont want to validate the control.I want simple tooltip for textbox.
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Then why not create a div and put your content in that.
eg:
<div id="MytoolTip" style="visibility:hidden;position:absolute;">
Your tool tip content
</div>
(you may apply a background image or some more css to make it to the shape you want)
now create two functions to show and hode this div
function showToolTip()
{
document.getElementById("MytoolTip).style.visibility = "visible";
document.getElementById("MytoolTip").style.left = event.clientX+"px";
document.getElementById("MytoolTip").style.top = event.clientY+ "px";
}
function hideToolTip()
{
document.getElementById("MytoolTip).style.visibility = "hidden";
}
//Now register this two functions for your text box
<input type="TextBox" onmouseover="showToolTip()" onmouseout="hideToolTip();" />
Hope this helps
Thanks
Laddie
Kindly rate if the answer was helpful
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