Access The First And / Or Last Item In An Bound ArrayList?
Mar 21, 2011
I've got an ArrayList bound to a repeater control. In an associated, but separate, area of the page, I'd like to get the first and last item out of the bound control. It's actually a paging element to a table.
I know the question has already been posted here but we didn't get to an real solution.I have bound my ListView to an SqlDataSource and I want to write some text in a control present in the view created in the LayoutTemplate depending on some properties of the rows returned.Obviously, I'm using the ItemDataBound event to feed my items but this is not the point.
The spontaneous solution was to bind the ListView.DataBound event and access the raw datasource (a DataTable?) and do the required calculations.I inspected the Items property and, despite it was not empty, the related DataItem property was null.The only work-around I can come to is to execute the calculations in the ItemDataBound event and accumulate the result in some private fields. But it's really ugly to see and makes harder to get some of the required values.
I have one ListView. If someone selects an item (as LinkButton) in the ListView, then the program will retrieve the record value and then converted the record value into ArrayList.
Is there VB code example (or showing a link) how to write the program in one page aspx?
I have to set a LinkButton's OnClientClick attribute but I don't know what this value is until the LinkButton is bound to. I'm trying to set the value when the repeater binds, but I can't workout how to get the 'boundItem/dataContext' value.
<asp:Repeater ID="Repeater1" runat="server"> <ItemTemplate> <asp:LinkButton Text="HelloWorld" ID="Hyper1" runat="server" OnDataBinding="Repeater1_DataBinding" > </asp:LinkButton> </ItemTemplate> </asp:Repeater> protected void Page_Load(object sender, EventArgs e) { var list = new List<TestObject>(); list.Add(new TestObject() {TestValue = "testing1"}); list.Add(new TestObject() { TestValue = "testing2" }); list.Add(new TestObject() { TestValue = "testing3" }); this.Repeater1.DataSource = list; this.Repeater1.DataBind(); } public void Repeater1_DataBinding(object sender, EventArgs e) { var link = sender as HyperLink; //link.DataItem ??? }
Is there anyway to find out what the current rows bound item is?
Dim downloadsarray As New ArrayList downloadsarray.Add(iconlink) downloadsarray.Add(imgpath) downloadsarray.Add(filesize) downloadsarray.Add(description)
I'm currently using a GridView and I want to set the CssClass for the Row depending on a property of the object that the row is being bound to.I tried the following:
<asp:GridView id="searchResultsGrid" runat="server" AllowPaging="true" PageSize="20" AutoGenerateColumns="false"> <!-- The following line doesn't work because apparently "Code blocks aren't allowed in this context --> <RowStyle CssClass="<%#IIF(DataBinder.Eval(Container.DataItem,"NeedsAttention","red","") %> <Columns> <!--............--> </Columns> </asp:GridView>
Now I could simply handle theGridView's RowDataBound event and change the css class of the row there...but I'm trying to keep a clear separation between the UI and the page/business logic layers.
I have a databound FormView with a dropdown list of categories. All works as expected, but I want to provide the facility for the user to add a new category to the list and I can't find an elegant way to do it. My current approach is to have a simple modal popup (Ajax toolkit) with a FormView (bound to the Categories table). That successfully inserts the new row, but it doesn't show in the dropdown so it can't be selected. I can force a refresh by calling formview.DataBind() in a suitable event handler, but that of course moves the formview off the selected record and loses any changes the user may have made.
Is there a convenient way (perhaps using AJAX, avoiding a postback entirely) to update the Categories table and refresh the dropdown without moving off of the current FormView's record? I feel sure this must be a frequent and basic requirement, but I've not found any mention of how to implement it.
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.
I have what's bound to be a stupid question, so I'll apologize for what I think should be an obvious answer my brain just can't see. My problem is very simple. I have a Repeater control bound to a SqlDataSource. The ItemTemplate in this case is one complicated beast, and rendering can take a loong time if too many records are returned; so I need to maintain tight control over how many records are brought back from the data source.
Is there not some way of either stopping the creation of subsequent RepeaterItems once a certain count has been reached, or cancelling the bind if more than a certain number of records are returned? I know I can grab the record count from the AffectedRows property in the Selected event of the DataSource, but I've encountered a brain-lock on how to stop/inhibit the binding (or RepeaterItem creation beyond x records).
I'm happy with either aborting the binding altogether if the record count is too high (displaying no records), or simply stopping it after X records are returned; at this point, I'm not picky. Either way would work, and it seems I ought to be able to readily figure out either one, but my brain has simply gone into neutral.
I would like to make the datagrid bound column to hyperlink for redirecting to the details page .
For example , when my mouse over certain row of bound column in datagrid , it will change the colour to blue . Also , I can click it and redirect to the detail page .
I have a dropdown binded with database value Eg : A001, A002, A003 etc. When ever i use to select the first value A001 , it is not going for postback. After selecting the second index value A002 n then selecting the first value A001 , i use to post back. And i dnt want to use appent data bound here.
I would like to make the datagrid bound column to redirecting to the details page .
For example , when my mouse over certain row of bound column in datagrid , it will change the colour to blue . Also , I can click anywhere of the row and the will redirect to the detail page .
Notes : I do not want to use hyperlink column and do not want to fix the text for every row. I want to use datafield, CommandName and CommandArguement.
I have two drop down list on a page. The first one list projects and the second list users. The userlist is populated with an object datasourse that pulls a list of users for the selected Project.Whenever the Project list selection changes the second ddl Userlist always reverts to the first person in the list instead the person that was selected before a new Project was chosen.
i am implementing a update query module.i am displaying all fields from a table for a term searched. well now i am implementing update option for the record which are displayed, i have like 70 columns in my table, and i want to know how to restrict some selected fields to be only read only while the form can be updated ?Like if user select to update a record then some selected field such as "Timestamp, UID etc some selected fields" remains READ ONLY !
Is it possible to access a databound item via a codeblock?For example, I am attempting to add code within an itemTemplate while the current level is not equal to the previous level.
<itemTemplate> <% // Need to ensure Container exists in current context
I have a MVC dropdown list (Html.DropDownList) with list of Movies populated. I want to retrieve both Title(value field), Description(Text field) when I perform the form Submit. I can access the Title(value field), but I can't access the description. My code sample is below.
The Detailsview has a template containing a textbox for one of it's fields.When an item is selected in the Gridview, I want to set a property of the textbox. How do I do that? I've tried Findcontrol for the item during Prerender of the detailsview. I've also tried many other things. Below is a portion of my aspx code followed by my VB code.
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="LU_DutyStations_ID" DataSourceID="SqlDataSource1"> <Columns> asp:CommandField ShowSelectButton="True" /> <asp:BoundField DataField="Duty Station Code" HeaderText="Duty Station Code" [code]...
I want to access a dropdown control value of each list item as soon as it is created. I tried with ItemCreated and ItemDataBound events but I am getting null contro when I try to access control as shown below:
I'm trying to figure out how to access controls that are added to a panel in a code behind file.For example, when I click a button, I add a radio button list to the panel.How do I access the selected item from that radio button list? I get an error saying it is not defined, even though list gets generated..
I have an AutoCompleteExtender control tied to a textbox. If the user starts typing in it, a drop down pops up displaying the a list with the matching suggestions. If, while the list is being displayed, the user hits the Tab key, the textbox loses focus and its value gets overwritten with whatever choice was highlighted in the list.
The problem is when the user clicks outside the list, I want to achieve the same behavior. It currently keeps whatever the user had typed (before the choice list pops up), but I would like for the textbox to get the value of the last highlighted choice (just as if they hit Tab).
I'm able to capture the event, when the user clicks outside the list, but I can't seem to find how to get to the highlighted value from the choice list.
