List Collection That Contain A List Of Dictionary Collection - How To Use It
Feb 1, 2011
List<Dictionary <string,object>> I am reading about the list and collection, If possible, what are the different ways that I can utilize the list of dictionary collections..... gives me different examples or areas where I can use it.
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Jan 5, 2010
want to create a list representing a list of valid locations on a grid. Items can only be stored in these valid locations and I want to locate the "next available" valid location. If I do this with a traditional list I have to deal with the end of list conditions. A circular list collection would make this a bit easier. Is there such a collection in .net?
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Apr 22, 2010
I have class like
public class ProgressBars
{
public ProgressBars()
{ }
private Int32 _ID;
private string _Name;
public virtual Int32 ID {get { return _ID; } set { _ID = value; } }
public virtual string Name { get { return _Name; } set { _Name = value; }}
}
here is List collection
List<ProgressBars> progress;
progress.Sort //I need to get sort here by Name
how can I sort this collection by Name?
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Jan 29, 2011
I have this program in which I am trying to store a collection of values into a list and session
Example:
valueCollection = (List<Values>)Session["Value"];
I want to do the front end in a way which will show a table with each row showing a label and textbox. This would be too simple to do obviously but I want it to show 4 rows of the table by default and then the user can select "add another" this will then add another row onto the table with a label and textbox exactly similar to the 4 default. Everytime the user selects "add another" the table increments by 1.
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Nov 9, 2010
How to setup a multi value dropdownlist from a list collection...
Datasource: Listcollection which contains ColorCode and Description...
how to I setup a dropdown with Colorcode-Description like ORG-orange...
then how to capture these selected value as colorcode only by removing description for update purpose...
Now I am doing like this...
ddl.datesource=list ...contains (colorcode, description)
ddl.DataTextField = "ColorCode";
ddl.DataValueField = "ColorCode";
ddl.databind();
then selected value should be like this...
ddlcolor.Items.FindByValue((DataBinder.Eval(formView1.DataItem, "colorCode").ToString())).Selected = true;
for update:
ClassA.Color= ddl.selectedvalue();
Now what I need change to in the above code to get the combination of both..otherwise i need have textbox for description which syncs with ddl..which is bit complex for my level of programming.
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Jun 10, 2010
I created user control. It has string[] public property (it may be List<string> or whatever). I want to support defining this property in aspx code, when declaring the instance of this usercontrol. Something like this:
<uc1:MyControl ID="MyControl1" runat="server">
<MyStringCollectionProperty>
<string>My String 1</string>
<string>My String 2</string>
[code]...
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Apr 9, 2010
We need to create a simple web service in ASP.NET that can be called from PHP or other languages. This in turn will be used to update records in a database for an item submission.
The core part is fairly simple, we have a base set of fields for the object - first name, last name, birth date, city, etc. In addition however we need to accept a list of items associated with that object that can range from 0-n.
Jan 1 2009, ABC
May 1 2010, 123
Jun 30 2010, XXXXX
What would be the best way to structure this so it can be easily passed to the ASP.NET web service and processed as a single call for the entire object? Would passing the list of items as a single delimted string be a wise approach? Ex: Jan 1 2009, ABC|May 1 2010, 123|Jun 30 2010, XXXXX
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Jan 29, 2010
I'm using forms authentication in my C# based web site, with the authentication defined in web.config files in the various folders/sub-folders. I want to write a generic administration menu system, that lists all of the admin pages that the use is authorized to open. As I add pages, I want them to automatically show up in the menu. I need to obtain a list/collection of all pages that the active user is authorized to open. Is this possible in ASP.Net 3.5?
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Jul 7, 2010
I have a list item collection. How to add this list item collection to a datatable.
The list item collection has the following fields:
Student Name, Maths Mark
John 20
Mac 30
John 35
I want to create a html table from the data table, which is grouped on the Student Name field.
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Mar 7, 2010
I was building an application for a project with .NET 3.5 and I noticed a weird behaviour of the List.Add method:
I have built my own class to organize data pulled from a database, and I use a while cycle to iterate through it.
However, when I List.Add(item), the whole content of the list is substituted with the last content pulled.
An example:
Suppose you have 3 users in a DB, each one identified with an ID and a username:
| ID | username |
| 1 | John |
| 2 | Fred |
| 3 | Paul |
and you have a "Users" class defined as
public class Users
{
private Int32 iD;
private String username;
public Int32 ID
{
get { return iD; }
set { iD = value; }
}
public String Username
{
get { return username; }
set { username = value; }
}
}
So you write this function:
[... SQL definitions - sdr is a SqlDataReader ...]
List<Users> userlist = new List<Users>();
if (sdr.HasRows) //There are users
{
Users user = new Users();
while (sdr.Read())
{
user.ID = sdr.GetInt32(0);
user.username = sdr.GetString(1);
userlist.Add(user);
}
}
What you expect (I expect) is userlist containing:
| ID | username |
| 1 | John |
| 2 | Fred |
| 3 | Paul |
What I actually get is, instead
| ID | username |
| 3 | Paul |
| 3 | Paul |
| 3 | Paul |
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Mar 11, 2011
I have a gridview in which dtasource binded is a List which returns class type. If no records in list, I want to display 'No records found' in GridView.
[code]...
In else part, what code i have to write to get desired output?
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Aug 22, 2010
I need to cache System.Collection.Generic.List object with expiration time
var Root = from feed in feedhotel.Descendants(ota + "HotelContent")
where (feed.Attribute("HotelCode") != null)
select new xmlhotel()
{
};
return Root.ToList();
Is it possible to cache Root.ToList() for some time....
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Oct 22, 2012
I need a list to export in excel and i need the following to achieve in the exported excell
- I need the header of the excel with font bold and size should be 14px of font.
- Other Cell try should be 12px of the font
- Right align the particular column in the excel
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Jul 26, 2010
I have a list of objects that I want to bind to a gridview. Creating that list and binding it works fine for most of the public properties in that list.
There are some objects contained in each of those objects... for instance there is an Address object.
object.Address.Line1;
object.Address.Line2;
When I bind this to my gridview, I have no issues with stuff like object.DateRegistered, but how can I access things like object.Address.WhatEverProperty? I always get this error:
"A field or property with the name 'xxx.xxxx' was not found on the selected data source."
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Apr 19, 2014
i want to check my collection so i can add a new customer as long as the username does not exist in the collection i do not want 2 customers to be able to have the same username.
i have been trying many different things to try to get this to work but i am not exactly sure what i should be doing I have a aspforum and collection C# class of the list.
here is some things that i have tried
CustomerExists() i also have a collection of List<Customers>
//HERE IS MY EXISTS METHOD
public static Boolean IfCustomerExists(string login) {
List<Customer> theGuy = Collections.Customers;
bool exist = false;
foreach (Customer customer in theGuy)
[Code]....
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Mar 2, 2010
I have following two collections,1. CategoryList, 2. ItemList. I need to get the collection which contains the rows shown in below in "Expected Result List".could you please provide me the LINQ query on collections to get this resulted List?
[code]...
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Jul 18, 2010
We have a web project that contain its business methods in a class library project called "Bll.dll"
some methods of Bll.dll return List<> ... from a source - that i don't remember now - told that returning Collection<> is better than returning List<> Is it a valid ? Note that i don't make any process on values returned from BLL methods .. just view it in a web page
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Mar 31, 2010
I want to know that how i use the collection class for storing some data and save it letter in the data base.
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Mar 25, 2011
I have an ASP.NET app with lots of textboxes all over the page that need updating at various points through program execution.
These textboxes actually belong to a certain class, so for easy updating I thought I could create a Dictionary(Of string, object) and add the control.ID and the control to it and then for updating do something like this:
(in case of updating textbox.text):
[code]....
However the text property of the textbox does not actually get updated. I'm mainly trying to avoid having to manually do textbox.text = somestring for each one of my textboxes every time I have to update them.
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Apr 1, 2011
I know that if I have set a cookie on a previous request, it will show up in my Request.Cookies collection. I want to update my existing Cookie. Are the cookies from my Request.Cookies collection already copied to my Response.Cookies collection? Do I need to add a new cookie with the same key using Response.Cookies.Add(), or do I need to use Response.Cookies.Set()?
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Jun 20, 2010
I'm using HttpModule to capture requests to the web server. Before processing the page I'd like to check the values contained in some keys of the Request.Form collection and according to some logic change if necessary. I'd like to do this when BeginRequest event is fired. The problem is that the Request.Form collection is readonly.
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Feb 5, 2010
What would be the most efficient way of storing a set of values in a session? I'm guessing it's either a List/Array or Dictionary. Basically, when a user selects an item from a DropDownList, a value (between 1 and N where N <= 20) is sent back to the server. I'd then like this value to be used as an index (if using arrays) or key (if using a dictionary) within the session. I don't want the value to be seen by the user, hence why it's not stored in the DDL. From what I gather, dictionaries are designed for key-lookups. However, since the scale is quite small, are there any overheads of using a dictionary that could make it less efficient in this case? Each corresponding value is unique to the user, so I've decided to use sessions.
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Mar 25, 2011
I'm binding a Dictionary to a drop down list.
Say for example I have the following items in dictionary:
{"Test1", 123}, {"Test2", 321}
I'd like the drop down text to take the following format:
Test1 - Count: 123
Test2 - Count: 321
I was going along the following path with no luck:
MyDropDown.DataTextFormatString = string.Format("{0} - Count: {1}", Key, Value);
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Jul 6, 2010
I have a asp.net mvc view which is strongly typed view and i have a controller which returnsthe ilist user based on the id provided. I am getting the following above error:
The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[Data.User]', but this dictionary requires a model item of type 'Data.User'.
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Data.User>" %>
<% using (Html.BeginForm())
{%> <%= Html.ValidationSummary(true) %> [code]....
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May 16, 2010
I'm trying to move to a DataList control of a dictionary list
Dictionary <string, List <string>>
where should I insert the key and the list nell'HeaderTemplate nell'itemTemplate, but I do not know how.I tried to create the ItemDataBound event:
[Code]....
but it gives me error code sula first lien and tells me that there is no reference
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