I have three ArrayLists with string elements and I want to store them into one List/ArrayList/String Array/Dictionary.
I mean I want to add them. I don't know which one How can I do it? What should I use?
It is in asp.net/c#.
Is there an easy way of storing an ArrayList containing different custom objects? I guess the easiest way for me would be to use a foreach to store each object into our database, but how would I read them out of the db and assigning them to the correct class?
View 8 RepliesI am trying to retrieve a arraylist frm a session and add in more objects into the arraylist on top of the existing object in the arraylist.But i have encounter problem at the foreach loop where it promted me a error message shown below
Object reference not set to an instance of an object.
below are the sample code.
public void addItemToArraylist(List<LibraryItem> temp) //l temp pass in 5 items each tim
{
ArrayList storeItems = new ArrayList();
storeItems = (ArrayList)Session["storeItems"];
foreach (LibraryItem items in temp)
[Code]....
i want to create a arraylist which will able to store user info like (username,machineIP,port ) for each user in the list & retrive this data when needed . any one tell me how i can do it or any alternative way without database or xml file.
View 6 RepliesI am working in asp.net 3.5 with c# and sqlserver 2005 as database. I my project i have to select some of the checkbox of a gridview and update the database according to that. I want to store all the selected box in a arraylist and update the database according to the selected list . But i am not getting how to proceed.
View 3 RepliesI'm working with a product called SiteFinity.I have a class which looks like so:
public class Categories
{
public IContent oContent {get; set;}
[code]...
i have a list for my shopping cart which i currently store in my datatable and then store it in a session. to avoid using sessions is it best to create a class where the datatable is stored and can be accessed from anywhere?
View 2 RepliesI 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.
get the list of all sessionid which will be running onto server without storing them anywhere.
View 7 RepliesIs it possible to display a list of descriptive phrases (say pulled from a lookup table in a database) but store a code in another table? I'm a beginner at ASP.NET but have some experience with SQL Server. If so, how can I do it?
View 9 RepliesI have a File Uploader in my ASP.NET application Using C#, we can upload any type like images, documents, pdf etc.
I m storing it in the Filesystem and having only the Name of the File in DB.My doubt is can we store the entire file, images in DB. State me Which is good practice and why we need to use it.
Either file System Storage or SQL DB Storage.
I am looping through a dataset and I would like to have the following in this array list
name, from, to, price
john, 40, 50, 39.99
mike, 20, 50, 49.99
etc.
Once I do that, or if it is possible to do it using the dataset that will work with me. But I want to do...
If john's price between from and to...
So in my code I wanted to make it easy for me and instead of memorizing the row #, I would just do.. arraylist.row("john").item("from")
How can I convert a arraylist to a string?
View 4 RepliesIs there a way I can sort this query result in Linq? I'd like to sort in descending order by the .Count parameter:
[Code]....
I have an arraylist of string items that I want to bind to a gridview.I want to bind the value from each item to a asp:HyperLinkField but I dont know what the DataTextField should be? The arraylist obviously doesn't have a column heading as it's just 1 dimensional.What value do I need to use in the DataTextField?
View 3 Replieshow to distinct arraylist value using c#?
View 10 RepliesI have ArrayList in my Model and want to iterate through it in my javascript. I am using following code but its giving me error : CS0103: The name 'i' does not exist in the current context
for(var i=0; i <= <%=Model.KeyList.Count%>; i++)
{
alert('<%=Model.KeyList[i]%>');
}
How to get rid of this?
how can i do empty Arraylist in immediate window in asp.net
View 1 RepliesHow to compare array in arraylist by name.I try many thing but no one works.public class myReverserClass : IComparer { int IComparer.Compare( Object x, Object y ) { ... }
View 1 Replieshow can i delete all arraylist item?
View 6 RepliesI have a problem with how to fill an array list from a data reader
string queryDTL = " SELECT * FROM tbl1 ";
connection.Connect();
cmd = new OracleCommand(queryDTL, connection.getConnection());
dr_DTL = qcmd2.ExecuteReader();
ArrayList RecordsInfo = new ArrayList();
while (dr_DTL.Read())
{
RecordsInfo = dr_DTL["number"].ToString();
}
The problem is the datareader contain alot of info other than the number but I don't know how to put them in their correct position.
I have an Array List to save selected files and a ListBox to display only the name of the files..my requirement is to delete corresponding files from arraylist when its deleted from listbox...here is my code:
public ArrayList to_compress = new ArrayList();
ListBox pack_lbx=new ListBox();
private void add_btn_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
[Code]....
I have a gridview with a column of checkboxes. On checking the checkboxes, they have to click on a drop down list that will redirect them to another page. The value of the checkboxes are stored in an arraylist. However, the problem is how can i pass the arraylist to the redirected page?
View 2 RepliesCan i store Image data in Array list.
View 4 RepliesI have a function and I am getting an error message. I need to convert my DataTable to an array and be able to access each line individually. This is the error message: Operator '-' is not defined for types 'System.Data.DataRowCollection' and 'Integer'.
[Code]....