How to use Generic collection and generic list effectively in a asp.net application i.e. web application.? Can we able to use Generic list in Dataset or Datatable or Datareader using to bind in Grid view?
View 7 Repliesi am trying to Bind value's to Label Using Generic List<>
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returning all values sucessfulyy now how i Show these Values in Label
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Label1.Text=???what it will be?
How to use extension methods and customizes generic list collections??
View 1 RepliesI get this error when run the page
DataBinding: 'System.Int32' does not contain a property with the name 'item'.
protected void Page_Load(object sender, EventArgs e)
{
List<int> item = new List<int>();
{
item.Add(25);
item.Add(50);
item.Add(520);
item.Add(543);
item.Add(543);
item.Add(55);
};
GridView1.DataSource = item;
GridView1.DataBind();
}
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" ShowFooter="true">
<Columns>
<asp:TemplateField HeaderText="Sub total">
<ItemTemplate>
<asp:Label ID="subTotalLabel" runat="server" Text='<%#Eval("item")%>' />
</ItemTemplate>
<FooterTemplate>
<asp:Label ID="grandTotalLabel" runat="server" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I'm trying to create a control out of a class I found, and one of the overridden functions is the following:
protected override void PerformDataBinding(IEnumerable data)
However, when I try to build the control I'm getting the error as shown in the subject. I've tried searching, and it seems the signature for the original function matches the one I have, and all other solutions I've seen uses the same signature.
I dont know what I have done but my add blog or news item functionality is broken. It works fine locally but not on the server (.net 3.5 mvc 2 I believe).
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The interesting thing is the path P:Web_DevelopmentAHNDEVControllersAdministratorController.vb. This is my local path on my machine but not the
Calling Index view is giving me this very very annoying error . Can anybody tell me what to do about it
Error:The model item passed into the dictionary is of type 'System.Collections.Generic.List1[MvcApplication13.Models.Groups]', but this dictionary requires a model item of type 'MvcApplication13.Helpers.PaginatedList1[MvcApplication13.Models.Groups]'.
public ActionResult Index(int? page)
{
const int pageSize = 10; [code].....
At debug time I would like to see what are the keys in my InitParams collection - I can't seem to be able to list them.
EDIT:As Jon suggests below, this might be a bug within the Silverlight debugger. To reproduce, just create a new Silverlight Application within Visual Studio 2010 and just edit code
{
public partial class MainPage : UserControl
{ [code]...
I have the following Students class:
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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.
I am working on a web app that will heavily rely on configuration. The configuration is also will be written by another process or human. I am looking to get response on best practices in .net 3.5 on how to implement this case. I had used the configuration section of an early version of the Enterprise Library Applications Block. I really liked working with it but from what I hear it is discontinued in current versions. Hence the question... Need to be able to serialize collections, pick up file write event to reload new instance of config into memory.
View 1 RepliesI have a list view control. Each row within it has a rowid and a textbox where a note(user enters relevant info to that particular record) is entered. On a paging event I store the rowID and the note text in a generic list for retrieval if the user pages back later on. Goal here is to keep the text the user has entered. (see the code below)This generic list does in fact get populated correctly when I go to the next page currently. I can see this in Visual Studio. So now, when the user goes back to the first page I want to run a test within my Listviews ItemDataBound event. I want to see if the row ID being tested is part of the generic list. If so, I then want to take the corresponding note that is also within the list and bind it to the text box. However, I don't know how to write the correct conditional for this and how to bind the textbox if the conditional evaluates to true.
View 1 Repliesi want to know that should first name and last should be kept as sperate field or merged into single attribute. The Basic problem i am facing to keep first name and last name in seperate fields is that i cannot effectively use like query for searching a record by name
View 7 RepliesI have two generic list with Hotel class object. Both List contains hotel ID. I want to retrieve common hotel id from both Hotel List and assign to new HotelList.I have done following code for that but any other sort way to implement this kind of functionality.
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Note: I dont want to use Linq because I am working on framwork 2.0
I'm trying to render out some images on an aspx page. Error I'm getting in the code below is:
DataBinding: '_Default+ImageThing' does not contain a property with the name 'FileName'.
public class ImageThing
{
public string FileName;
}
private void DisplayThumbnailImages()
{
ImageThing imageThing1 = new ImageThing();
ImageThing imageThing2 = new ImageThing();
imageThing1.FileName = "asdf.jpg";
imageThing2.FileName = "aaa.jpg";
List<ImageThing> imagesToRender = new List<ImageThing>();
imagesToRender.Add(imageThing1);
imagesToRender.Add(imageThing2);
Repeater1.DataSource = imagesToRender;
Repeater1.DataBind();
}
here is the aspx:
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem, "FileName")%>
</ItemTemplate>
</asp:Repeater>
in my model there is a List.
public class InvoiceModel{
public int InvoiceID { get; set; }
public int Date { get; set; }[code]...
for create view i can use Html.TextBoxFor(m => m.InvoiceID) and for Date.but how can i fill List?and how can i use global for this list as Shopping cart?
i had my code in .aspx page which i trnasfeered to the .asmx pageso i get error in few places in .asmx pageUnable to cast object of type 'System.String' to type 'System.String[]'earlier i had a label control which i hve replaced with a variable in .asmx pagelet me knw hoe to do the few modification to make it workingi hve the below code which gives me conversion frm string to string[] errorPrivate Shared errorList As List(Of String) = New List(Of String)dim msg as string
If errorList.Count = 0 Then
msg="Sucessfully done"
Else
[code]...
Can any one can describe the main diffrence between the array and generic list.
View 6 RepliesI have one Hotel class that contains many properties. When I retrieve all hotels data from database, I store them in Generic List object.Now what I want that I have two properties called LowestPrice and HiestPrice. I want to get Minimum(LowestPrice) and Maximum(HiestPrice) from generic list directly.
Something like HotelList.Min();
Right now I have following logic implemented in my project, but I dont want to use foreach loop.
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I have a list of Categories which I need to bind to a TreeView control in WPF and I can't find a working tutorial or get it working.My Category class consist of (ID, Title, ParentID). If the Category is a top level category the parentID is null.Can anyone sow me how to bind this to a treeview?
View 3 RepliesI have declared a simple class
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And Pass some values to it :
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Then I use Linq to select rows :
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How I can enumerate it?! I used this, but it has error
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I am using datalist to bind the generic list. On databind() command I am getting error "nable to evaluate expression because the code is optimized or a native frame is on top of the call stack.
View 3 RepliesI am trying to bind generic list to DropDownList an i am not sure how to continue.
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I am working in asp.net 3.5 page, where I want to bind a textbox with generic list data. And I have Previous & next button. Which will show the record in textbox.
I don't want to go in db again and again.
i have these values in my generic list:
Product Name ItemCount Additional Info
Brioche & Jam 2
Almond Croissant 4
Mixed Salad(v) 20 No Onions
Mixed Salad(v) 5
What i am trying to do is group the duplicates so now the list would look like this:
Product Name ItemCount Additional Info
Brioche & Jam 2
Almond Croissant 4
Mixed Salad(v) 25 No onions
I have a GenericList and i want to convert that to DataTable My code is here
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I am getting Count in "objFinOpRegs". But i want to convert "objFinOpRegs " to DataTable.