Asp.net - Maintain Added Attributes On A ListItem While Posting Back?
Nov 16, 2011
I am generating ListItems for a CheckBoxList control in ASP, but when I do something like the following:
...
Dim newListItem As ListItem = New ListItem("RoleName")
newListItem.Attributes.Add("style", "color:blue;")
CheckBoxListControlToFill.Items.Add(newListItem)
...
"RoleName" is maintained from post back to post back, but my style tag is dropped after the first post back. If I want to keep any attribute like this, do I need to re-add it every post back?
I'm using Visual Studio 2005 and ASP. NET 2.0 with this program. This is written in VB.net
Right now, we've got a Gridview that is embedded and databound into another gridview. The 2nd Gridview is hidden by default and expanded by the user. Within the 2nd gridview are several DropDownLists. The problem is that these DropDownLists are not firing the OnSelectedIndexChanged functon nor AutoPostback whenever I change the selecteditem.[code]...
I'm having some issues with an Invalid Viewstate error and I can understand why it's happening but I don't know how to fix it so I'm hoping someone can help.
I have a page which is similar to this /story/?id=123 but I'm using a different page to Server.Transfer to this page.
So I've set up /info to Server.TransferRequest("/story/?id=123") and it works fine until the page does a postback to itself.
We have a login form on this page which simply reloads the page but when it does it seems to add /?id=123 onto the end of the URL so it ends up like this /info/?id=123 thus causing an Invalid Viewstate error.
I've already tried adding EnableViewStateMac="false" - this fixes the error but it doesn't log the user in as expected so it does not give the required result.
Is there a better way to redirect to my page other than Server.TransferRequest but still keeping the nice URL? - I don't want to response.redirect if I can avoid it.
I want my ListBox control to respond dynamically to a change of selected item.However, "OnSelectedIndexChanged" fires an event only when AutoPostBack is set to true. Having a dozen of controls updating each time a user makes a change in selection insingle one is quite annoying and irritates a lot. Is it possible to enable
I need to know the answer to this. I have a standard asp control (CheckBox) and I want to bind some data to it. I also want to be able to access it via vb in an easy manner. Can someone tell me quickly if this is possible? An example of what I want to do is below:
Dim myValue = TestCheckBox.Attributes("MyAttribute")
The text renders as literal <b>My Name</b> instead of making the text bold. The same thing happens if I try to add a list item from the VB side of things:
Dim li As ListItem = New ListItem("<b>My Name</b>") Me.listClientContacts.Items.Add(li)
Is there a way to add HTML to a ListItem in ASP, or is there a better way to dynamically generate a list?
When the user selects a name in the listbox and clicks a button I save the name in a var called "parent".What I want to do is programmatically move the selected name to the top of the list and take that whole list and drop it in a dropdown. I started the code below but don't know how to move the selected list item (parent) to the top of the list??
Private Sub GoLower(ByVal parent As String, ByVal lst As ListBox, ByVal ddl As DropDownList)
I would like to add to my RadioButtonList a ListItem displaying a DatePicker on select. How do I go about adding this in code please, I mean the DatePicker? The code below is my attempt at this but does not work
Dim datepick As New DatePicker With datepick .ID = "RadDatePicker1" .MinDate = New DateTime(CLng("2006-01-01")) .SharedCalendarID = "sharedCalendar" .Width = New Unit(100) End With RBtnList.Items.Add(New ListItem(datepick, "Other"))
i have a dropdownlist that populates from the sql server database. populating the list is not a problem, but does anyone know how to populate the value part of the listitem.
I have a program that adds controls on the fly to an auto-scroll panel. When the panel is scrolled (viewing the bottom of the panel for example) and a control is added, it looks like it is added assuming the top left corner of the panel is still at 0,0 when in fact it may be 0,500. To see what I am talking about, create an empty "Windows Forms Application" project and insert the below code into it.
Friend WithEvents Panel1 As System.Windows.Forms.Panel Friend WithEvents btnAdd As System.Windows.Forms.Button Dim ButtonCount As Integer
When I run code the below, the If statement never resolves to 'True'. It always shows 'Assm' as the SelectedItem, even if I check all the checkboxes. So how do I allow 'Assm' to be checked by default AND have the code-behind see that the other checkboxes are checked?
I am confused with the removing multiple selection from listbox ...been searching over internet .. but still I do not get the right approach or simply say it doesn't work. I tried to loop through the list without removing any of the item from listbox. I printed the item.selected and it showed that only the first one I selected printed true, others were not ...
I am trying to get the bound values from a row in a ListItem. I have a button on each row that when clicked will perform a task (sending an email message to the person who's name and email address is in that listitem row. So, I have an event handler tied to the listview, and I am trying to get to the underlying datarowview to extract the data items.Here's what I have in the event handler:
Protected Sub lvUsers_ItemCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewCommandEventArgs) Handles lvUsers.ItemCommand Dim diCurrentUser As ListViewDataItem = CType(e.Item, ListViewDataItem)[code]...
Now, it fails at the line where I am trying to access the contact_email element in the DataRowView object.What an I doing wrong?
I have a drop-down asp:listitem box that looks perfectly clean to me. It functions like when the first time you change a language on that page (Say, English to Swedish), it does change the text to that language.
The second time you try to change the language (Swedish back to English -- or any lang), it just reloads the page and then you have to select English a second time to actually change the page back to English.
I tried removing lines from the code behind, one at a time, but nothing changed it.
I am trying to create a single listitem that has multiple lines. When I create a newline using "System.Environment.NewLine" I get an empty box rather than the text going down the next line.
How can I get this to work? Currently my listitem is a custom structure. Do I need to change anything here so I can have multiple lines? Perhaps its a limitation of the listbox?
Public Structure ListItem Private displayText As String Private itemValue As Integer
i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
The application that I am working on is a Service Desk App. I have a form there that uses a DropDownList that contains employees names coming from the Active Directory. Any employee can make a request and save it. Problem arises when an employee leaves the company and consequently his account is deleted from the Active Directory. When some other employee searches the DB to finds a relevant Service Ticket that could be of his use, when tries to open it an error is thrown that indicates that the name does not exist in the DropDownList items.
UPDATE:I am adding some code so that it can be more clear.
I am currently working on a form that performs several calculations and then submits it to a sql server. I was able to post test data to SQL when using command.CommandText = "<SQL insert statement, inserted values 'test, 5'>" followed by command.ExecuteNonQuery(). But now when i try to submit data using variables i get an "A first chance exception of type System.Data.SqlClient.SqlException' occurred in System.Data.dll"I am not a programmer, so sorry if my code looks a bit rudimentary...
I would like to search an online (internet) database and import the result in my own Windows program. As I understand from reading and searching I first have to do a get from the default (search) page to get the cookies for instance and then do a post providing the filled input fields and adding the previously collected cookies. So far getting the information seems to work but submitting the data back to get the actual search result doesn't seem to work. This is what I have so far: [code]Anybody that can point me in the right direction? I my assumption correct that I first have to do a Get and then Post the correct data back?
I'm having an issue with sending textfiles line by line on a timer.Currently I can pass a textfile location to my program, and on each tick it will send the first line, or the whole thing line by line. What I want to do is have my program pass line 1 of the text file on the first tick, and line 2 on the second tick, etc.LocationTB is where the user passes a file location.
ElseIf RadioButton2.Checked = True Then Dim FILE_NAME As String = LocationTB.Text Dim TextLine As String If System.IO.File.Exists(FILE_NAME) = True Then
I have read the Sticky's on the CodeBank Forum. Since I havn't done this before, and I want to avoid upsetting anyone:A. Compiled Code- I am intending to upload a sample vs2008 project file, and some resources used in the project. I plan to delete the contents of the bin/Debug and bin/Release folders before doing so. Is this all I need to do?
I have a form which contains a fairly large number of values. I am currently submitting with a POST method, but I wish to convert this to do it with jQuery via AJAX. I have been experimenting with converting my code-behind "save to database" function into a Web Method. I am using a two-step function method, firstly preparing all the variables from Request.Form("parameterName") and then passing them all into a "saveData" function as follows:
[Code]...
From the post mentioned above, I can see I can send this string, but how do I process it server-side when recieved? The article implied that HttpContext.Current.Request.Form("parameterName") should work, but it doesn't... I'm guessing because I need to access it from the txtQuery variable..
Is there another way to easily make a POST request in .NET other than the WebRequest class? I have a very, VERY small piece of data I need to post: password=theword but WebRequest randomly, and I mean randomly, drops the data when posting to my server. I've tested it by using a chunk of code from my server that dumps the request to a console, and I can that the client is sometimes sending and sometimes not sending the POST data.The code that I'm using that uses WebRequest works in another project, when talking to IIS. The server being talked to (a minimal web server in another system) responds properly every time I POST data to it through Firefox. I've got a function in the same project that fires off a GET request, and that works. It just seems like my POST function isn't completing the transaction...something I've noticed in the past when asking WebRequest to handle small strings.[code]
