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ddl selected index change

s
I am makin a .net web application..on page.aspx i ve 2 ddl of states and cities.When i select option in ddlstate i get corresponding cities , but when i again select a state , i get cities corresponding to present as well as previous state that i selected earlier.How should i solve this
(i ve used database table to access cities corresponding to states using arraylist)
code behind for selected index changed---

void ddlstate_selectedindexchanged(object sender,event args e)
{
class1 c1=new class1(); //class1 contains method fillcity that has returns cities in arraylist

arraylist al=new arraylist();

al=null//initialising arraylist

al=c2.fillcity(ddl.selecteditem.text);//fillcity has input parameter as state which has tp be selected

for(int i=0;i

Posted On: Tuesday 1st of January 2013 09:33:09 PM Total Views:  170
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Hi. I am used to working with classic asp. Now I want to set my db connection in a class and call a seperate class to get the records from the db. I get the following msg: Exception Details: System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) Below is my code. in my DbConnect.cs is using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; /// /// Summary description for DbConnect /// public class DbConnect { SqlConnection myConnection; public DbConnect() { myConnection = new SqlConnection("Server=(local);" + "Database=database;" + "Trusted_Connection=True;" + "connection timeout=30"); } public void Open() { myConnection.Open(); } public SqlDataReader Select(string sqlQuery) { SqlCommand myCommand = new SqlCommand("Command String", myConnection); SqlDataReader myReader = myCommand.ExecuteReader(); return myReader; } public void Close() { try { myConnection.Close(); } catch (Exception e) { Console.WriteLine(e.ToString()); } } } and then in my code is: DbConnect myCon = new DbConnect(); myCon.Open(); SqlDataReader myReader = myCon.Select("Select * from tblUser"); while (myReader.Read()) { Console.WriteLine(myReader["pageTitle"].ToString()); Console.WriteLine(myReader["pageContent"].ToString()); } myCon.Close();
Doing error checking with ListView   (134 Views)
Alright, I've got a ListView going that's been databinded with a local database file and all that and has Deleting, Editing, and Inserting enabled and all that. Works fine. But what I don't know how to do is how do I do some error checking with this There are boxes next to Insert button that they can fill out and whatnot. But I want to make sure the data they input is correct. And to do that I need to access the textboxes inside this ListView and make sure they are the way I need them. How do I go about doing that I've looked at the TextBox ID="whatever" thing in the code in hopes that I could access it by doing whatever.Text = blah. That obviously doesn't work. Any ideas I'm sure this has to be possible.
How to work with two tables - your input is greatly appreciated   (171 Views)
hi,I'm new to asp.net development. I have two tables that carry the same primary key. Here's what I want to do: 1. iterate through the main table first, then inside that loop, I want to check my other table for the same key. 2. If it's the same key, I concatenate values of a parricular column in the second table until the key changes. I then want to add this field of concatanated data into my first table. The reason why I am doing this is I need to have the data in one row for a data grid. Does that seem like a normal thing to do in asp.net If I create a data relation between these two tables, how would I use it in such a case I am not sure how to implement it.
UserControl drawing / funciotn issues   (160 Views)
I have a menu that is set up as a user control. The buttons on the control all work, so the code behind is being called.Now for ease of use, I wish to change the enabled / disabled status of some of the buttons depending on who is logged on / off. But the code (placed in the control constructor function) is not executing (I have placed a breakpointon it and it is never called).If I put the code on a page, and use it I can toggle a buttons enabled state, so I know that the code works, its just accessing it through the control.So I assume that there is a method I need to add to my control that is called whenever it is drawn, as if I need to add in code in each page that uses the menu, then I lose the benefits of having a user control.if it was C++ It would be something like the OnDraw() function, but that doesnt work in Vis Studio. Any advice / help greatfully receivedK
vs.net on citrix   (112 Views)
I Need some information regarding installation of visual studio.net on citrix and also can IIS be installed remotely on some other machine.if so ,can IIS handle running different applications at same time (training people in a class)
My machine keeps cgraching, please help.   (162 Views)
Here is a post from somebody that has the same problem. Is this a known issue Is there a fix for itI would like to use VS.NET 2003 soon again.Any help is appreciated.Thank you,Stevehttp://www.dotnetjunkies.com/Forums/ShowPost.aspxPostID=6027 ASP.Net application times out, locks up computer Posted: 03-13-2005 08:04 AM I have the strangest problem, never had this problem before on any machine. I open an asp.net c# web project with VS.Net 2003. It opens fine. I then either open my web browser and go to http://localhost/mywebproject/default.aspx, or I run the application from within VS.Net. It opens fine. However, when I make the slightest change to my default.aspx file, even just adding a space and then deleting it and saving the .aspx file, then "refresh" the browser (using IE 6.0), the website just sits there as though it's taking awhile to refresh...but it never refreshes. If I try to do anything else on my machine, such as look at Task Manager, the machine completely locks up. I actually just let the machine do its thing for about 20-25 minutes (yeah, it took that long) and then this message finally came up: "Time out waiting for a program to execute. The command being executed was "c:\windows\microsoft.net\framework\v1.1.4322\csc.exe" /noconfig @"C:\Windows\Microsoft.Net\Framework\v1.1.4322\Temporary ASP.Net Files\remarkablecoffees\903d4e45\d6bbf567\uir21m1b.cmdline". I've search the internet like crazy looking for a possible reason why this happens, can't find anything. If anyone has any way to figure this out I would be very, very appreciative. I've tried reloading Visual Studio to repair it, didn't help. I'm currently running Windows XP SP 2 with all windows updates installed. For the time being I'm going to just run all ASP.Net applications on my windows 2003 server so I can get some work done.
Which Control caused PostBack?   (163 Views)
I have a dropdown list and button that cause postback, each with events that are getting fired correctly after Page_Load. How can I determine which control caused the postback in OnInit()
Header Control Assistance Please   (279 Views)
I know this is an easy fix but I'm not seeing what could be the problem. Anyways I am reading C# Web Applications with Visual Studio .NET. I read in one of the chapters you can make a base class file that you can format all your web pages the same like a template html. Well the example has a header and footer section the rest of the page would be created by me. This is what I want to do I got the footer control made with no problem but my Header when I view it in design mode its what I want. Here is the code:CODE The textHeader and imageHeader are two transparent images. The bgheader is a gradiant background image. Like I stated early it looks correct but when I run it the two transparent images take the white background instead of my color one.Any tips or suggestions be greatly appreciated.
ASP.NET   (122 Views)
I am trying to get the value of tag. Here is my example.I haveTest1Test2I want to get this value using ASP.Net. I am using Request.Form("select1"), Getting only the value but not text. Any inputs
Datagrid Print Question   (106 Views)
When i print my datagrid it only prints the gridlines on the first page and not on any of the following pages. Also, it doesn't print the shading that I have on the grid. Does anyone know how to fix thi
Altering an A tag within a string...   (224 Views)
Merry Christmas all!What I want to be able to do is to take a string of HTML and check if there are any 'A' (link) tags that do not have a 'class' attribute and if there are, then add the class attribute to any of the 'A' tags that are lacking one. So, if I had:This is some text and here is a link and here is another linkI'd like to end up with:This is some text and here is a link and here is another linkI'm completely stumped as to how I would achieve this.
Custom Server Control Property Editor   (131 Views)
Hi Folks!Need some help.Building a Customer WEB Server Control using VB.NET and I am trying to set the Editor Attribute to the following property: _Property [BackButtonImage]() As String Get Return _BackButtonImage End Get Set(ByVal Value As String) _BackButtonImage = Value End SetEnd PropertyThe above code is suppose to work by adding Imports System.ComponentModel. But it is not working. I have searched the InterNut for several hours but all the examples/documention keep pointing me back to this. However the error I keep getting is "Design is not a member of UI" I have ran out of ideas. This is what I get from the Object BrowserPublic Class ImageUrlEditor Inherits System.Web.UI.Design.UrlEditor Member of System.Web.UI.Design Wayne Sellars"Programming, today is a race between software developers, striving to build bigger and better idiot-proof programs, and the Universe, trying to produce bigger and better idiots. So far, Universe 1 - Programmers 0."
VS Data formatting in textboxes   (178 Views)
In Visual Studio, is it possible to format data in textboxes For example, how could a currency value of 50 be displayed as 50.00
Spell Checking   (135 Views)
Does anyone know of a good way to do spell checking in an ASP.Net application I am using a form to send an email and I would like the option to check spelling before sending the email.
targetSchema - How will this work, REALLY?!?   (146 Views)
I just came across the property "targetSchema". I am looking for a stronger understanding of this property and how it might be beneficial in the practical world. From what I understand, one would create a web form and place server controls on it. The targetSchema property can be set to a browser version. By default it is IE5. There is also the ability to create new targetSchemas for the server to run. Sounds cool so far!!! I like the fact that the server will generate additional html code that as a developer, I used to write. What about an internet web site, where as a web site administrator, one needs to worry about the different browser version: IE4,NS4,IE5,NS6,MacIE5...and so on... If I select an individual targetSchema, say IE5, then won't the server generate all of the code for this schema and ignore the fact that an end-client user may actually be using a different browser than the schema that I have selected. Is this another tactic by MS to dominate the browser war OR Do I need to learn more about the .NET technology For the record, I am a Microsoft fan. However, like so many, I become frustrated in having to write for different standards.Any insight and thoughts would be appreciated!!
[ASP.NET]: howto read client devices (like usb pendrive) via web?   (253 Views)
Hi all!I must to read and write from/to a specified usb pendrive insert into my client pc via web.I'm trying to open a web page, list all client dviers (C:\,D:\ ... ), click on a driver, and if is an removable device write a txt file or (reverse operation) read a txt !I've tried some code about drivers listing, but this reads only local (so if I run the page from my iis serve, I view server drivers not my local ones).Any solution or ideaMany thanks for all posts, and sorry for my english the bestFrancesco Cabigliera - Italy Francesco Cabigliera "Tadan"----------------------------Italiano Amateur Radio Station----------- IW3IDS ---------On Echolink - APRS Active
Java to ASP.NET   (144 Views)
Has anybody been involved in migrating java to dot.net using Microsoft JCLA, or suggestions where I can get metrics from I've got a project which potentially involves translating a JSP package onto the 'strategic' platform but nobody has any idea how big a task it is.
disable page   (231 Views)
How to disable page(make it gray) while loading data on to it I'm using ajax updatepanel.
Validation Application Block and serialisation   (137 Views)
Hi allIs it possible to configure a business entity on the server and to apply validation using the validation application block in such a way that the validation is available on the client when using web servicesI want to configure my validation in one place. Matt
Custom Server Control's click event not firing   (174 Views)
are the events wired to the controlsI prefer to explicitly wire my events in the Init event instead of using declartive markup.CODEpublic class MyPage : Page{ public MyPage() { Init += WireEvents; } private void WireEvents(object sender, EventArgs e) { MyButton.Click += ClickMyButton; } private void ClickMyButton(object sender, EventArgs e) { //do work here }}markup would look like thisCODEprotected void ClickMyButton(object sender, EventArgs e){ //do work here} Jason MeckleyProgrammerSpecialty Bakers, Inc.
Problem with date picker   (170 Views)
I'm using the calendar control on my webpage. The pop up works fine, however when I select the a date the pop does return the value selected to the text box ... it doesn't seem to do anything.can anyone help Here's the code on aspx page:CODE Calendar Actual Calendar aspx:CODE{/CODE}Code behind the Calendar.aspx form:[CODE]public partial class Calendar : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { } protected void Calendar1_SelectionChanged(object sender, EventArgs e) { string strjscript = ""; strjscript += "window.opener." + HttpContext.Current.Request.QueryString["formname"]; strjscript += ".value = '" + Calendar1.SelectedDate.ToString("d") + "';window.close();"; strjscript += ""; //Don't ask, tool bug. Literal1.Text = strjscript; } protected void Calendar1_DayRender(Object source, DayRenderEventArgs e) { if (e.Day.Date.ToString("d") == DateTime.Now.ToString("d")) { e.Cell.BackColor = System.Drawing.Color.LightGray; } }
Programmatically show/hide a table row   (220 Views)
Hi allI am developing an application in vb.net that allows a user to select a number of items via checkboxes, dropdown lists etc.The results page needs to show the items selected by the user and the value for that selection in a table.I can get all the items to show and if selected their value, but i need to be able to hide the name of the item selected and its value if it is not selected by the user.Could someone please advise me how to do thi