someone with good recursion understanding can do it but i failfor example i have a datatable with following data
ID ------------------- Name ------------------- ParentID
1 ------------------- Home ------------------- null
2 ------------------- Course ------------------- null
3 ------------------- .Net ------------------- 2
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how to code a simple calculator in ASP.NET? Everything I try isn't working...Here's what I need to do:
Create a web page with a simple calculator. The web page will have two text boxes (with labels) for data entry, radio list box to select the operation (+, -, *, and /), label to display the result, a calculate button and clear button. Use Validation controls to validate the data entry. Write the code using try/catch block to catch any data entry error. If there is any data entry error then display the message in the result label. Create an appropriate header for the web page and add graphics to make the page look professional. Set the default focus of the form to the first text box and default button to calculate button.
I need to pass a value from the selected button in user control to the containing page. I have it working fine but only by using a bunch of if statements that strike me as ugly. Can't figure out how to use a switch statement which, I think, would be a bit less cumbersome. I'd welcome on how to clean up this code (obviously I'm new to delegates).
Here's the code:
User Control:
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="DelegateUserControl.ascx.cs"
Inherits="Foobar.UserControls.DelegateUserControl" %>
<asp:Button ID="Button1" runat="server" Text="Button 1" onclick="Button_Click" />
<asp:Button ID="Button2" runat="server" Text="Button 2" onclick="Button_Click" />
<asp:Button ID="Button3" runat="server" Text="Button 3" onclick="Button_Click" />
User Control code behind:
using System;
namespace Foobar.UserControls
{
public delegate void SendButtonValueToPage(int buttonValue);
public partial class DelegateUserControl : System.Web.UI.UserControl
{
public static event SendButtonValueToPage SendButtonIdToPage;
[Code]....
I'm using the RssToolkit for .net. I'm using an Httphandler to return rss feeds. The feedID is passed in as a querystring parameter. If no parameter is passed in, I would like to have the the handler return a feed that is an aggreate of some of the feeds that the handler can handle. What I'm wondering is, can the handler recurse?
View 1 Replies I am trying to implement Selection Sort in vb.net using recursion. Problem is that I keep getting stackoverflow if the array I want to sort is 1000 elements. I can't find the problem. I don't know much about stack overflow or how to check it. From my research the problem could be infinite recursion but I check for that and exit the sub.Here is the main code:
Public Class SelectionSort
Inherits DefaultSort
Public Sub New(ByVal num As Integer)[code]....
Everything inside the constructor is set in the base class "DefaultSort", except for the Sort(). The array is set using properties:
Public Overridable Property Arr() As Integer()
Get
Return _array[code]....
Everything should work as far as I know. It works on an array of 10 elements and an array of 100 elements.
i have the following:
[Code]....
which is called in the controller for my index view which then calls a partial control
this does what i want for the first level in. How do I get it to work for N levels? my view
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the count is 0 after the first time through. How can i get the partial view to take what is passed and find its children to that parent
I'm new to ASP.NET, and I'm trying to get started with a simple tutorial. But I'm having problems configuring the ability to actually display a .asp or .aspx file on my computer. I have .NET 4 on the computer I'm attempting the following code:
[Code]....
I get an error on my browser that there is an error, and it doesn't display the time as of now.
I have a page where users can search by company name, the data list is pulled from an Excel spreadsheet hosted on the site. I'm seeing some strange results returned, for example:
In the company field say there are the following entries:
Anns Company
Bernards Business
Company B
Dermots Domain
Property Company
If I search for "Com" I get the following returns (correct):
Anns Company
Company B
Property Company
If I search for "Der" I get my "Sorry there are no matching results" message (Incorrect)
If I search for "Ann" I get the following returns (Correct):
Anns Company
And if I search for "e" I get the following returns (Correct):
Bernards Business
Dermots Domain
Property Company
It seems random as to why it doesn't return some values, I've tried moving rows around to see if that's the problem but it makes no difference. My range is set correctly in the spreadsheet.
When I debug the VB code behind, when I search for something that works correctly e.g. "Com" in the above example, once enter the value and click search Visual Studio begins steping into the code and shows me the contents of the variables however when I search for something that's not working e.g. "Der" and click search it immediatly returns the "Sorry there are no matching results" message and the code behind does not get steped into.
I'm going thru an asp.net 4 book, and I'm at a part about classes and their properties and functions. But up to now, all the examples involve a web_site, with controls, code_behind files, CSS, etc. But, I get to places where I don't understand the examples, so I look out on the web for other resources. For example, I found the code below to demonstrate the "ToString" function. My problem is, I'm not sure know how to test a little piece of code like this. Can't I just open up an application or project or something, paste this in and run it?
Module Module1
Class Perl
Dim _a As Integer
Dim _b As Integer
Public Sub New(ByVal a As Integer, ByVal b As Integer)
_a = a
_b = b
End Sub
Public Overrides Function ToString() As String
Return String.Format("[{0}, {1}]", _a, _b)
End Function
End Class
Sub Main()
Dim p As Perl = New Perl(2, 3)
Console.WriteLine(p)
End Sub
End Module
I wanted to get a code review of my methods for creating a simple list/gallery display in ASP.NET. I am looking for specific ideas on how I might approach this same task differently. My goals are simplicity, rapid development, and ease-of-use.
The task: Create a simple image list view (gallery) for a folder in ASP.NET web forms.
How I Did It: I created the image controls on the fly and add them to a placeholder template. I added line breaks using literals controls too. Finally, I add a query string to the page for the "paging".
What other ways would one recommend to do this? I had considered to use a grid or listview. My goal was to do this really quickly.
I am new to the Web Services. I am learning this one. I am 10th stander. I need a simple code and procedure how to use it in our web site?
View 2 RepliesIs there any documentation or tutorials anywhere on what can be done or put between these magical symbols in ASP.NET aspx files? I've tried a number of resources though they all seem aimed at Classic ASP.I'm already writing protected functions for updating and grouping in my grids using Eval. But, for example, I noticed the following in my code :-
ConnectionString="<%$ ConnectionStrings:WORK_MyConnectionString %>"
I presume that $ ConnectionStrings is a macro or built-in function of some sort and I'm trying to track down what else is available in this area. I would also like to use the
<% if (my function) then .....endif %>
to conditionally write items to the page.
.net frame work. I know about few controlin .net and I have tried few programs also. Now want to learn a databaseconnection in .net so please provide me one easy example of such program.
View 2 RepliesI've got a single table, with project information and schedule information. To make the data easier to present, I created a tab control with two panels (a detailsview in each). The first tab is for project info, the second tab is for schedule info (again, all fields in the same table). The problem is, if i change info in both tabs, and then hit the update button, only the data from one tab is added to the table. I think this problem is simple to fix, and boils down to the way I have the page organized, but I can't quite figure it out.
I've boiled my code down to the following conceptualized structure:
[code]....
When you click the update button, you return to the listview, but with only the information from your current tab saved. How can I get it to update from both detailsviews?
I find a special circumstances as follows:
My web form contains a postback button. The button will postback and call a server-side method. The method will process something that may spend about 20 seconds. However, user may try to click the button several times within the waiting period. The sequential clicking may cause the first running method incomplete and stop, since the second click postback will dominate the method and start again. How can I solve it?
PS: It can not use client side script to disable the button, because it requires to use some server-side validation within the method.
I highlight an image in a HTML document and try to set its properties in the design by right clicking and looking up properties, I see only HTML or Document (no image). In the source view there is no link to image files folder. I guess this will be improved in the final version.
View 3 RepliesHere is my situation. I have inherited an MVC 2 application. I am learning MVC 2 on the fly with this application. I am trying to validate a checkbox by doing this: Grey out the submit button until the user clicks on the "checkbox" then the submit button is enabled. 1st question: Where do I place the code to make this happen? 2nd Question: How do I go about doing what I explained? I wanted to use a simple javascript code within the click event of the checkbox but I don't see this in MVC 2.
View 4 RepliesI am trying to find a very simple code that allow users to login and logout using C# asp.net 2008.
I used to compare the cookies with session ID, it worked fine but I could not find a way so the user can logout.
I want to design it in windows application form of Visual Stdio 2008
View 2 RepliesI was making a function to convert all dates in an object to strings and when I used the following function I got a error in FF "too much recursion". (It also fails in IE and chrome)
function datesToString(obj) {
if (obj instanceof Object) {
if (obj instanceof Date) {
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just a quick question -i cant get my class in App_Code to work in my code behind page for simple .net page, some light what doing wrong?
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Is there a simple way to have dynamic forms? I mean depending on X, show a form with X properties? Right now Im forced to create a model for each form I'm going to show. But I would like it to be optional and ofcorse have the Html.Summaryvalidator work.
View 3 RepliesI need to create a simple blog feature for my website. I have created a form that writes to an XML File, i now need to be able to display this file in a blog style, and possible add comments.
View 5 RepliesI have a form where I am trying to validate few text boxes using javascript. It is not working as it is inteded to and I am unable to understand the reason.can someboady
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My simple database is like this:
articleid articlename
1 Top 5 places to see
2 Favourite locations
Right now, the URL of each article is like this:
website.com/articles/article.aspx?articleid=1
website.com/articles/article.aspx?articleid=2
I want the URLs to be like this:
website.com/articles/top_5_places_to_see.aspx
website.com/articles/favoutire_locations.aspx