Forms Data Controls :: Using A Function To Fill Controls In EditItemTemplate From A DetailsView?
Jan 13, 2011
I have one more time a problem with a DetailsView..I would like to fill a TextBox (or Label) with a function in my DetailsView and on the Update getting value contained in this control.
It works fine when I don't use a personnal method like Bind("..") but if I try to use my function it throws an error
[Code]....
That's what I use for now and it works but I would like to fill TextBox2 with value returned by my function and update datas with this value.
I have a boolean / bit value in the database called "is_paid". Depending on this value I want to Disable a button. (the same would go for example to set a textbox not Visible, but anyway)
What I want is to Disable the button, if my boolean is 1 (true).
First I tried to convert my boolean value to text:
CS0030: Cannot convert type 'string' to 'bool' However, if I use it one a Label it works fine: <asp:Label ID="lblIsPaid" runat="server" Text='<%# Convert.ToBoolean(Eval("is_paid")) ? "True" : "False" %>'></asp:Label>
So another trial I did was to CAST the data from the database to be the text that I want, like so:
SELECT not_paid = CASE WHEN is_paid = 0 THEN 'True' WHEN is_paid = 1 THEN 'False' END ....
System.InvalidCastException was unhandled by user code Message=Specified cast is not valid. Source=App_Web_absjd3ob StackTrace: at ASP.manager_aspx.__DataBinding__control74(Object sender, EventArgs e) in c:Documents and SettingsAdminMy DocumentsVisual Studio 2010ProjectsWebManager.aspx:line 219 at System.Web.UI.Control.OnDataBinding(EventArgs e) at System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) at System.Web.UI.Control.DataBind() at System.Web.UI.Control.DataBindChildren()
So I wonder, is it possible to change the "Enabled" property based on by boolean value?
I'm using VWD 2008 and using an SQL database with a simple web app.
I've created a SQL query that pulls data from several tables. When I execute the query in
the query builder tester, it executes OK. I'm binding the DetailsView to an ObjectSource / DataSet / TableAdapter Querry with a variable that is bound to a listbox control.
Again, the query runs fine in the query builder.
When the detailsview or gridview gets built on the page it only displays columns from one database yet it executes ok within the query builder.
I can see the generated code for the detailsview does not create fields for every field returned by the sql query ?
I have a gridview and it has two EditItemTemplates. I want to update the items inside the second dropdown (EditItemTemplate) when I select an item from the first dropdownlistbox (EditItemTemplate). I want to update dropdownlist2 when I select an item from dropdownlist1. How can I do this?
I have a "simple" gridview that has some columns, and the ability for editing/deleting. I recently found that I can change the editing textbox to a dropdownlist and have follow that, using:
[Code]....
It's quite simple and instead of using an sqldatasource, I have successfully implemented using the sqlclient in the codebehind to bind data only when I want (since this GridView is for "reports" and is queried by many parameters from user inputs).From what I've found online, the only way people have populated the dropdownlist is by using an sqldatasource - is there any way to populate it using the codebehind sqlclient like I have for binding the gridview and other dropdowns on the page that are exactly the same actually. I'd obviously have to set the SelectedValue to be what the value is coming from the database, which I can't see being that difficult.
The tough part seems to be knowing when to access this "MoneyTypeEdit" dropdownlist. I thought it would be in the RowEditing event, so I tried something like:
[Code]....
And I know everything outside of the "inserted code" works, because it was fine before I added that, but the dropdown obviously didn't have any values. And I know the code inside the "inserted code" works because I use it somewhere else on my page to populate a similar dropdown. But I get the error that MoneyTypeEdit is null, and I'm guessing it's because it can't find the "MoneyTypeEdit" dropdownlist.
how to use validation controls with item template(not editItemtemplate). I want to display text boxes irrespective of mode so i am using textbox inside itemtemplate.There is a save button which will be clicked after entering prices for all the rows.
I have a grid with two columns. In one column the user can enter the price and for that i use textboxes inside ItemTemplate. So there is not editmode here.It will always in the edit mode, I meant the user can enter values always.After entering values user can click on Save button and on this i need to validate the values, i meant the prices the user entered. I tried using validator controls inside ItemTemplate column but it is not working.
I want to use JS calendar but it does'nt work, even I've tested "displayDatePicker('<%=Date.ClientID%>',this);" but visual studio gets this error: The name'Date' does not exist in the current contexwhat should I do?
I am trying to arrange the information from a SQL record into a 3 column by 3 row table to fit the form presentation that I want. I have placed on the page 3X3 table and then tried to place a detailsview in the first cell for the first picture called P1dv.
I have place a detailsview in the last cell that would control the paging of information called Controldv. I need to fiqure out how to link P1dv paging to Controldv page action. I am using visual web dev. 2005. I am not updating or editing these are read only views.
example of what i need the form output to look like:
But I´m trying to do that programmatically, not with the sqldatasource. So I wrote the method that binds data to Detailsview and I call it in the page_load. The problem is that I have to click two times on the select button to view the detailsview. The first time I click on the select button nothing happens.
I have a gridview with a Select button. Clicking the Select button for a particular item, I need its full details displayed in DetailsView. how I can bind to DetailsView? Here is what I have so far.
I have a Formview which contains a radiobuttonlist control in the EditItem template. I want to access the radiobuttonlist control and change the selected item client side using javascript.I've tried various combinations of document.getElemetByID and getElementsByName etc. but with no luck.Does anyone know to get to a radiobuttonlist controls in a FormView Edititem template using javascript?
I have a formview which binds to a table where one of the fields is an integer zip-code field. I want to pad the zip with a leading zero in the edit template when the zip is something like "02134". How do I edit the bound data without "breaking" the two-way binding?
I wrote simple function to add the zero and return a string:
Public Function padZIP(ByVal zip As Integer) As String Dim tmpStr As String = CType(zip, String) If tmpStr.Length = 4 Then tmpStr = "0" & tmpStr Return tmpStr End Function
I'm using an EditItemTemplate within a datalist, and I'd like to populate all comboboxes with the data that has already been entered whenever it goes into edit mode. I'm simply using this code:
I have a gridview and it has two ItemTemplates for editing, which replace a label with a dropdownlist. The dropdownlists are databound in the RowDataBound function as shown below. It works just fine except for rows which are in the Alternate rows (as defined by the auto format selection.) In essence, the ItemTemplate is replaced by the EditItemTemplate properly bound; but the AlternatingItemTemplate is replaced by empty dropdownlists. Is this a known feature? Is there a workaround?
I want to dynamically populate data in Dropdown box in the Edititemtemplate of the Listview. The below code is showing error "Object reference not set to an instance of an object". The problem is in Findcontrol function. How to solve this.
I have a dropdownlist embedded into an asp.net gridview. I have successfully populated the dropdown list in the footer but have not been able to populate the dropdownlist in the EditItemTemplate. Here is my code that works. I need to do the exact same thing for a dropdownlist embedded in the update functionality of the gridview.
As you all probably know a BoundField will always display a TextBox in edit mode, but i wish to add a RequiredFieldValidator to it. Any easy way to do it except for TemplateField?
I have GridView with template column binded to some field. In edit mode I would like to set default value to this field when it is not initialized (this is time value and I would like to set it to default 8:00 - this prevent user from entering this value) - how to do this?
When i Updating my gridview and i modify the value of dropdown the update is all ok, but if i not modify the dropdown and leave the selected value after the update i see another value, the first of listitem of my dropdown.
This is my code:
Sub GrdUpdate(ByVal sendere As Object, ByVal e As GridViewUpdateEventArgs) Dim ID_ricette, NomeRicetta As String Dim NomePortata As DropDownList Dim NomePortataSel As String If Not e.NewValues(0) Is Nothing Then ID_ricette = e.NewValues(0).ToString NomeRicetta = e.NewValues(1).ToString..........
I have a gridview which uses an EditItemTemplate and an ItemTemplate for an 'Effect' column. The ItemTemplate simply displays the bound data using a label control. The EditItemTemplate defines a databound DropDownlist control which contains all the possible selections.
The gridview also contains a bound 'State' column which gives the State of each row. I have already been able to access this field in the gridview_RowDataBound event, so far using the value to decide whether to re-colour a row or not. What I would like to do is use this value to determine whether to use the ItemTemplate or the EditItemTemplate for each row.
Effectively I want to be able to decide whether to display just the data (For an Approved row) or display the DropDownList and allow the user to make updates (For an In Work row). I have searched for information on this issue online but have not found a lot, so I presume that my approach is not possible.
How to write code in vb.net to control the Dropdown which is inside FormView EditItemTemplate. FormView named "frmFaultsReg" DetailsView named "lstStatus" Actually what i want to do that there is a textbox inside FormView EditItemTemplate and ItemTemplate to insert Closing date. lstStatus has a value PENDING and CLOSED. If a user select CLOSED from lstStatus then the date textbox named "ClrDateTimeTextBox" should show current date time and to insert into database and if user again selects PENDING from lstStatus then the date textbox should show empty. I think the postback of lstStatus should work but lstStatus is inside the FormView thats why I am unable to hook it.
