C# - Adding Only New Items From One List To Another?
Aug 11, 2010I have two lists:
List<string> _list1;
List<string> _list2;
I need add all _list2 different items on _list1...
How can I do that using LINQ?
I have two lists:
List<string> _list1;
List<string> _list2;
I need add all _list2 different items on _list1...
How can I do that using LINQ?
I have the following Students class:
[Code]....
I need the 1 since it's a foreign key in another table. For the life of me, I can't get this to work like this.
in one page i have list box on one button click i am showing on popup which is another aspx pagein that page showing one grid with check box now i want that when user select check boxes and click on add button selected items should gets added to list box on page when i click save button on page(not popup) all the records in that list box should gets saved to data base how to do this
View 4 Repliesif i create a html ul. and wanted to dynamically add list items to this list.
so i have :
<ul id="test" runat="server">
</ul>
is there a way i can add list item to this list dynamically in asp.net i am using vb
Looping Through Checkbox List and adding selected items to MS SQL DatabaseI don't want to store it using comma deliminator.I will need to do a search on analyze which users have what music in common.The image above is from a tbl_lookup_music table I created. MusicID, MusicNow how should I build the logicIF we have a user that has a tbl_profile table. And listens to many different types of music. How should We store the data.------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_lookup_music]( [MusicID] [int] IDENTITY(1,1) NOT NULL, [Music] [nvarchar](64) NOT NULL, ---- Type of music. CONSTRAINT [PK_tbl_lookup_music] PRIMARY KEY CLUSTERED ( [MusicID] ASC )WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY----------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_Profile_Music]( [ProfileMusicID] [int] IDENTITY(1,1) NOT NULL, [ProfileID] [int] NOT NULL, [MusicID] [int] NOT NULL,PRIMARY KEY CLUSTERED ( [ProfileMusicID] ASC)WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY]GOHow should I setup this table.
View 4 RepliesI have a dropdown list inside gridview which has a object data source and I am adding the list items as true, false which stores in the database table as a bit value. Even if i am addin the values 1 and 0 to the drop down list, its throwing the below error'grdDebug' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value My code to add the dropdownlist with list items are as below
<asp:TemplateField HeaderText="Debug">
<ItemTemplate>
<asp:DropDownList ID="grdDebug" runat="server" AutoPostBack="false" SelectedValue='<%# Bind("Debug") %>'>
[code]...
I am using the cascading dropdownlist controls from the Ajax toolkit. I have everything working perfectly and all of my select changes work. I have 3 related select boxes that all work great for single item select. What I need is for my last dropdownlist to allow for the selection of multiple items. I have tried adding the 'multiple' attribute to the final dropdown list and it allows the selection of multiple items but I cannot get the items when I post back, just a single item.
View 7 RepliesI have a situation where I want to show the selected records out of total records for a product of an employee
1) There is a checkbox list bind to <List> of objects from object datasource (For total items in list)
2) Now I want to check the selected items for a particular record in this list
3) For this purpose I have another list of <List> selected items returned by data access layer (For selected items for that employee )
4) How do I bind the selected objects with the total items list ?
5) In spaghetti coding model it was all too easy just by binding the checkbox list with a sql data source and running a for each on form load
Is it possible to set tab index value for list items of ASP.Net RadioButtonList control.
View 1 RepliesI'm designing my own custom control that contains a .NET dropdownlist. What I'm wondering is if it is possible to populate my dropdownlist with listitems placed in a placeholder? For example:
<asp:DropDownList ID="ddlFilter" runat="server" >
<asp:PlaceHolder ID="ListItemPlaceholder" runat="server"/>
</asp:DropDownList>
This doesn't work because the DropDownList control only allows ListItems as child controls. But, I want to do something similar to this so when the user includes my control on a page, they can do something like this:
<mytag:MyControl Mode="DropDown" runat="server">
<ListItemTemplate>
<asp:ListItem Text="C" Value="c"></asp:ListItem>
<asp:ListItem Text="E" Value="e"></asp:ListItem>
<asp:ListItem Text="B" Value="b"></asp:ListItem>
</ListItemTemplate>
</myTag:MyControl>
I know I can do this by dynamically adding the ListItems in the page code behind, but I'd like to avoid that if possible.
I am getting this error yet I know it to be untrue.This is the code:
ddlPartnerOrganisation.DataSource = agency.AgencyGetListOfEYDN();
string temp = ddlPartnerOrganisation.SelectedValue.ToString();
ddlPartnerOrganisation.DataValueField = "AgencyID"
;
ddlPartnerOrganisation.DataTextField = "AgencyName"
;
ddlPartnerOrganisation.DataBind();
Is it possible to select values from a List, where the items contain in a different list aswell?for example;
[Code]....
What I need are all the items from the first list "Items", where the string contains something from the second list "List".So I need something which returns the first 3 items (which contain the term "Item") from the first list.
how to add the facebook v4 toolbox items? I tried adding facebook.dll and facebook.web.dll, but VS 2010 is telling me it couldn't find any toolbox items in them.
View 1 RepliesI've never built an ASP.NET application. At my work, we have a bunch of different PDFs, Word and Excel documents, HTML pages, etc, all in one folder. My boss has tasked me with creating a web app to combine all of these items into one interface.
Among the things I'm adding, I need to convert a VB app I made. All the app does is scan our servers for log files and displays them in a ListBox.
Before I start importing the classes and setting up the code, I decided to just add a ListBox to the page and add a ListItem during page load.
VB.NET Code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.lbLogs.Items.Add(New ListItem("Test", "C"))End Sub
But, an exception is thrown when I try to run it.
The example I'm using there is the example shown on MSDN. Why this is occurring?
I'm trying to add a text-only item to a databound menu control. So far all I'm capable of doing is adding more links, but no text. My goal is to have a leading item be part of the menu but not a link. I want it to be displayed as text...
I've tried adding items to the menu.items collection, but this adds links.
I've tried adding items to the menu.controls collection, but this doesn't get picked up at all, just ignored.
I have a Combobox
[Code]....
the combobox doesn't have a get_items() method.
How can I populate the ajaxcontroltoolkit through javascript?
I use the code below to add a table with each datarow
Code:
TableRow rowItem = new TableRow();
TableCell cellColumnInfo = new TableCell();
cellColumnInfo.VerticalAlign = VerticalAlign.Top;
cellColumnInfo.Width = 600;
[Code] ....
It works, but it only add only 1 item per row. all i want to happen is it will display the first 3 on the first row and the 2nd 3 on the second row.. and so on.. How can I do that with asp.net?
I have a dropdown which i have binded code behind as:
protected void PriorityType()
{
DPriority.Items.Add(new ListItem("--Select--", "0"));
DPriority.Items.Add(new ListItem("High", "1"));
DPriority.Items.Add(new ListItem("Medium", "2"));
DPriority.Items.Add(new ListItem("Low", "3"));
}
It shows the items in gridview correctly but when i insert in database as DPriority.SelectedValue . it does not save the text but the index
Like if i choose High in database it saves as 1 but it should save as text not index.
Is there a way to add pagination to a repeater to display say 5 items per page?
View 2 Replieswe have been able to return information from the database and then select the relevant link and return that row of information from the SQL table. The next part I am working on is adding information to the database.
So far all the coding in done in a class file, we are using stored procedures and have used user controls to return the information from the database and then also to select the row of information for each news item from the database. The sql database connection information and executing the stored procedure information is all done in the class file. how to add the news items to the SQL table. Below is the code that is used to return each news item from the SQL Table, how i need to amend this to rather than display the information, save it to the database. Also having used stored procedures, would I need to create another stored procedure to to the INSERT INTO statement
[code] ....
After I execute a data reader and put the readed string from the database in my dropdownlistbox, I cannot add another item in it.Here's my code:
con.Open()
Dim com As New OleDbCommand("Select Status from Table where Id = 'somevalue' ", con)
Dim dr As OleDbDataReader
[code]...
I've been at this same question in different forms now for a while (see e.g. Entity Framework and MVC 3: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. ), and it's still bugging me, so I thought I'd put it a little more generically:
You have an entity object (using Entity Framework), say User. The User has some simple properties such as FirstName, LastName, etc. But it also has some object property lists, take the proverbial example Emails, to make this simple. Email is often designed as a list of objects so that you can add to that object properties like Address and Type (Home, Work, etc). I'm using this as an example to keep it generic, but it could be anything, the point is, you want the user to be able to add an arbitrary number of these items. You should also be able to delete items (old address, or whatever).
Now, in a normal web page you would expect to be able to add these items in the same View. But MVC as it seems designed only makes it easy to do this if you call up an entirely new View just to add the address. (In the template for an Index View you get the "Create New" link e.g.).
I've come across a couple of examples that do something close to what I mean here:
[URL]
and
[URL]
The problem is, although the sample projects on these sites work fine, with mock model objects, and simply lists (not an object with a child list), it's a different thing if you actually want to do something with the posted information - in my case save to database through the Entity Framework model. To adapt these cases to that, all of a sudden I'm in a maze of intricate and definitely not DRY code... Juggling objects with AutoMapper and whatnot, and the Entity Framework won't let you save and so on (see above link if you're interested in the details).
What I want to get at is, is it really possible that this is such an uncommon thing to want to do? Update a child collection in the same View as the parent object (such as the email addresses in this case)? It seems to me it can't be uncommon at all, and there must be a standard way of handling this sort of scenario, and I'm just missing it (and no one here so far has been able to point me to a straighforward solution, perhaps because I made it too abstract with my own application examples).
I am currently in the process of writing a facebook type 'activity feed' for a site. Currently I am binding the last 10 items to a repeater control, which contains a usercontrol representing each item. The requirement is that when a user clicks a refresh button any new events are added to the top of the list, the previous items drop down and the equivalent number of old items drop off the bottom, all with nice slider transitions. I have put the repeater inside of an update control and are able to handle the transitions by using RegisterStartup script to drop jquery calls onto the page for the slider. However I cannot find a way to dynamically add or remove new datarows to the repeater.
I need the old items to stay in the repeater and be pushed down by the new items, so completely refreshing the datasource seems like a bad idea.I was thinking about maybe storing the datasource in the viewstate and adding rows to that, maybe with an extra column on the end which stores what transition is needed on the databind for my jquery, but there will be a 'View more items' link at the bottom of the page, so I am worried that the list could get pretty large and there would be a big problem with memory.
I have a listview which has a complicated Item template that contains a repeater, an objectdatasource and some other controls. On the first run I am only showing 10 Items of the listview. The user has an option to show 10 more ListView Items. If user clicks on show older items; the listview shall add another 10 items. how to go around this since my list view already has a datasource and I don't want to rebind the whole listview all over again. Instead; I just want to add another 10 items.
View 7 RepliesI am trying to get a simple multi-page program to run correctly. I have everything set up, except for the "remove" function. When I try to remove an item from the list box nothing happens. Insted of trying to explain it I will show you the code...
Index
Code:
[code]....