What I want to achieve is that by changing the assignment in the Page_Load method I can hide / show the Edit button, but that does not work. When playing around in the markup file I can make the button show up or hide, but I can never change it from the code behind file.
I also tried to explicitly call dvwSomeDetailsView.DataBind after setting the property, but this also didn't work. Overriding OnPreRender and placing the code from the Page_Load method in their didn't do anything to improve this either.
Maybe I'm thinking too complicated - shouldn't there be an easy way to set programmatically whether the button should / shouldn't show?
In page1 on clicking template field named Edit the record goes into detailsveiw (Edit mode) to next page.
In detailsview, I have already set True to AutoGenerateEditButton so that the user update record and Click UPDATE or CANCEL.
I want to show a message "Record Updated Successfully" on clicking update and the page redirects to the Page1 and refresh the page1 with the updated record.
I'm having a problem getting the GridView.AutoGenerateEditButton property to do anything for me. Right now, I set it to true, and I don't even get the button added to my GridView, so obviously I can't even get any further to code the actual events. Here is what I have so far (sorry for the messy code; I'm getting close to my deadline and it's been a bit frantic):
[code]....
Now, the columns are being added exactly the way that I want, and the data is populating properly. However, I don't have the edit buttons that I assume I should have by setting the GridView.AutoGenerateEditButton property to true.
when I click 'edit' I can edit rows in the the grid view but when I click 'update' nothing happens - I can still see the 'update' and 'cancel' buttons and it looks like the changes are kept but the database is not realy being updated. The Javascript is running but nothing happens. Doesn't even look the the 'RowUpdated' event is in effect.here is my code:
I have a databound gridview using datatable as datasource. Template fields are used to edit the row content.This cell value should get updated in the datatable on text_changed event without using gridView edit. Is it possible to overload the GridViewEditEventHandler for this purpose.
i have a webform to take user inputs. i am able to insert the data into database on clicking add button and also able to view the
records in the detailsview which is in the next webform.I have a edit and delete button in detailsview.
Now when i click edit button, i want the selected record from the detailsview to be populated in the first webform where i can update the record. also deleting record using delete button.i am using c# code,datatable and oracle stored procedure here.
I need a complete code reference for Detailsview and Formview using the code only:OnRowCreatedOnRowEditingOnRowUpdatingOnRowDeletingOnRowCancelingEditOnPageIndexChanged OnPageIndexChanging OnSorting OnRowDataBound
I've been playing with a certain detailsview for most of last week. This particular control is located within a panel that is hidden until a user clicks a linkbutton on a gridview. Then the panel's visible property is set to true and the detailsview is populated based on the commandargument passed through the link button. What I've discovered is that with each postback, the datakey or control parameter, still not sure which or if both, is lost. I've discovered a lot about ViewState and how controls work and am a bit surprised that something as common as using a detailsview within a gridview wouldn't be handled better than it is now. I have been able to get the proper information to build a correct select statement when the user decides to edit a record. I am now working on an update statement, but for some reason while I have the right key to update the right record, I am unable to access the user-generated data that was entered in the details view.
For instance, I select record with ID of 1 in the gridview. It pulls up the detailsview and I can view it. I then click edit. The correct record is still there. (It was previously going to default). When I enter new text in a textbox and click update, the app still knows I am working with record #1 but doesn't seem to be able to find the textbox control. I have currently hard-coded a value into the field just to see if I could actually get the record to update and it did. I am using an OnInit to cause the sub to run and think this might be the problem. However, I have been unable to find a better way around this.
Here is the sub that executes on the OnInit() of the detailsview:
Protected Sub notes_binding() If notesDetail.CurrentMode = DetailsViewMode.Edit Then sqlNotesUpdate.UpdateCommand = "UPDATE [Oilchange_Notes] SET [notes] = '" & CType(notesDetail.FindControl("notes"), Textbox).Text & "' WHERE [vehicle_id] = " & Session("unitNumVal") sqlNotesUpdate.UpdateCommandType = SqlDataSourceCommandType.Text sqlNotesUpdate.Update() End If sqlNotesUpdate.SelectCommand = "SELECT * FROM [Oilchange_Notes] WHERE ([vehicle_id] = " & Session("unitNumVal") & ")" End Sub
And this is the error I get: Object reference not set to an instance of an object. If I'm correct about why it's not pulling the actual value or even acknowledging the control exists and is actually 'notes' (it is), then at would point would be the best to place this code?
I have a radiobuttonlist in a details view. Databinding is happening in PageLoad (if not IsPostback), after a details view item is inserted, edited and upon clicking cancel when in edit mode.Everything works well except when clicking cancel which for some reason the radiobuttonlist appears as empty. The code is surely working because up till OnPreRender the radiobuttonlist contains the required items. However OnRender the list appears as empty.
I'm trying to add an DropDownList to a DetailsView by code, because i'm writing a solution that let's the user select an table and view your records and edit them, some of theese tables, have a foreign key column and the user must have to select some item in the list.
Below is my sample code:
[Code]....
the code above is working correctly, when the user click in the buttons New or Edit , the DetailsView opens correctly, showing the DropDownlist, but when the user click in the buttons update or insert , an error occurs, the viewState cannot be loaded:
Failed to load viewstate. The control tree which viewstate is being loaded must match the control tree used to save viewstate during the previous request. For example, when controls are added dynamically, the controls added during a post must match the type and position of the controls added during the initial request.
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 details view in asp.net which I am dynamically replacing some of the controls using code behind (e.g. converting some text boxes to dropdowns). My problem is that I am unsure how to bind these to the field from the database on postback. I.e. I am trying to find the code behind equivalent bind('currency');
I can populate the dropdown with the current value from the database but cannot find how to save a new value on updating the detailsview.
I know the back button always presents a problem, but this one doesn't make any sense.
I have a simple details view and a button on a page. The button sends the user to the homepage. I am trying to prevent the user from being able to use the detailsview if they click Back in their browser.
This is the button click event
[code]....
When the button is clicked...oddly the user is sent to the homepage then when they click the browser back button they are sent to previous page with the detailsview still visiible.
I know I am missing something, can someone fill me in?
I want to attach a calenderextender to a textbox which is within a detailsview....now i need to specify a TargetControlID for the calenderextender....but the boundfield of a detailsview doesn't have an ID attribute.......so i am unable to set the TargetControlID to the Id of the textbox...how do i go about it?
Suppose I have a DetailsView, which is bound to a SQLDataSource. The underlying table has two columns, an ID and a value. When in display mode, I want to display only the value. When I switch the DetailsView to edit mode, I want the user to edit the value, and not see or edit the ID. Making the ID column not visible solves this, EXCEPT that then the ID value is not stored in the DetailsView so two-way binding does not work, and I can't update the corresponding DB record. How do I do two-way data binding with a DetailsView, but hide the ID column from the user?
I wanna use the DetailsView control without binding it with a datasource (just in insert mode) but the problem is when I try to get the values of the fields throught ItemInserting event handler I found the e.Values property empty however there are some fields.
Note: I wanna use it (The DetailsView control) [instead of allign the fields manually] because there're already a theme for it in whole the system and I don't want to do that again from scratch for custom template.
