FormView Not Updating With Control Events?
Jan 7, 2010
Time for my daily ASP.NET question.
One of my pages shows all of our customer information from a customer table. I want the user to choose whether to see all customer records, or select a specific record from a list. So, my webpage has two radio buttons (show all customers, show specific customer), a listbox (full of customer names), and a formview control. The problem I'm having is getting the formview to update when I change modes via radio buttons or listbox selection (see code below).
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Oct 29, 2010
why my formView control is not updating?
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Apr 14, 2010
i have asp.net chart control and gridview control in updatepanle my issue is when i click on edit link in gridview my chart control is not displaying but when i refresh my page iam to see it why is so??
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Aug 3, 2010
I have a text box inside a update panel. With the onTextChanged events, I have a post back set in "True" to show the customer Name and email when I type in the customer ID in the text box. I want to have it show when we leave or Tab out of the text box. Now is working , but only afte I click the submit button. Does anyone know how to code the following in order to make it work right away when we Tab out of the text box.
protected void txtBDID_TextChanged(object sender,
EventArgs e)
{
}
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Apr 8, 2010
i have the following scenario: one formview. when in editmode there is a child formview linked to the other by a column value. i need to take the value of one of the values of parent formview controls and set it to a textbox of child formview in insert mode. I wish to know which event should I use in codebehind to bind both controls? (that escenario will have paging and must keep the binding as if it was master detail)
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Dec 21, 2010
I have a very long running process that I start in a thread. This raises events with messages to say what it is doing.
How can I update a label on screen with these messages? (The label is in an update panel if that makes it easier).
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Dec 27, 2010
I have a very simple form that contains a FormView Control Bound with a SqlDataSource, The DefaultMode of the FormView control is "Insert". I noticed that when I run the page for the first time, the databinsing and databound events of the FormView Control occurs after the PreRender Event of the page ! I know very well the life cycle of a page, but I dont know when the data binding occurs in the life cycle of a page and if it can differ from a control to another.
Is there an article or a tutorial explaining all those things.
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Sep 9, 2010
I have a main formview which contains another formview. In the second formview I have a section that needs to insert/update. I want to access this formviews events for example I can access the main formviews item inserted event in the code behind:
FVInvoiceHCPAgreement_ItemInserted
I can't choose the nested formview events in the code behind
ie. FVInvoicePaymentInfo_ItemInserted
I have tried adding the ItemInserted event in the .aspx page
i.e. onItemInserted = "FVInvoicePaymentInfo_ItemInserted"
but for the handles clause it can't see FVInvoicePaymentInfo.
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May 19, 2010
I have an TabContainer which contains a user control. The user control contains a formview. When I try to update the formview I get an error "Object reference not set to an instance of an object". I had the formview in the tabpanel and it worked. I decided to make it a user control just to clean it up a bit since I have several tabs, each containing formviews or grids.
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Aug 13, 2010
I need to insert code inside the SelectedIndexChanged event but it wont show up in my IDE :(
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If I add another DropDownList outside my FormView it WILL display the events.
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Dec 13, 2010
I am using a stored procedure for a sqldatasource to update a formview. I believe that I am passing the Obligation_Status value correctly to the stored procedure but the oblgation status field is always updated AS NULL in the database. Does anyone know what I am doing wrong?
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Mar 26, 2010
One of the fields on my formview is a dropdownlist. When I go into edit mode the dropdownlist gets set to the correct value and works fine up to this point. Problem is I just can't see how to get the newly selected value of the dropdownlist to persist to the database when update is clicked. The DDL is a category list and I want to allow changing of the category for each record. Like I said I have it working so it displays the correct category for the record but if I change the DDL (change category) the new selected value doesn't get updated in the database. It just keeps using the binded value that was originally assigned to the selected value of the DDL. see code snippit
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The above snippet is how I am binding the DDL. Now to not bore you with a ton of code paste I use various events of the formview to make sure the value displayed in the DDL is correct for the record that I am viewing at the time. All that works just fine. Where I need some pointers is the when I enter edit mode and change the DDL from say fire to ice it isn't getting persited to the database, all other info in the record gets updated just fine but the DDL never changes. I have tried several angles to getting this working and TBH my brain is yelling BREAK TIME.
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Mar 21, 2010
We have a page that contains a loginView and in the LoggedinTemplate is a FormViewTemplate. The display part works fine.
Not all fields are databound due to special hadling needed on diaplay anu onUpdating. The display part works fine. However in the onUpDating procedure. I can't figure out HOW to gain Access to the field content in unBound FormView Fields. I need that to determine and set the output fields that need special handling.
I tried from the formView
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Nov 23, 2010
I have a 4 formviews present on a page. Three are updating to the DB without issue when the update link button is clicked. One is not. I have the DataKeyName set and still it doesn't save.
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Mar 1, 2011
I want to bind an object to a form view.
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Now, is it possible to generate a new object on update, without getting and reading each textbox with findcontrol?
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May 21, 2010
I have a strange issue with the FormView. After working through some issues getting the update to work (as this is my first experience with FormViews) I now have a new issue. After I perform an update, and the FormView updates and returns to read mode, if I hit F5 (refresh) the FormView performs another update to the datasource, despite the fact it is read-only mode and none of the fields on the screen are editable.
I would think that a refresh in read mode for the FormView after an edit would simply refresh the data from the database, not perform another update. Again, the FormView is in Read Only Mode, but a refresh is creating another Update event (which I can debug and see if I break in the ItemUpdating event). This only happens after I perform an edit, not when the page initially loads.
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Aug 3, 2010
I have an access database where when the record is updated I would like to automatically check a box and update the date to the current date in an Access 2002-2003 database. I've tried this for several days without any resolution and can't find anything that works on the net. ...I'm new at this.
I'm using VWD 2005 Express and Expressions Web 3.
Here is a short version of the code.
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Jan 18, 2010
I have a formview that I am adding and editing items. I need to have a lookup button besides a textbox so I can click the button and show a webgrid listing items with their descriptions. Select one and enter the data in the formview control. I know how to put the data in the formview control with the FormView.FindControl method. But how can I add a lookup? Can I do this with a popup panel? And on the postback update the textbox control?
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Oct 16, 2010
How to wire up HTML server controls events?
I added a Input (Text) control in my web form and turned it into an HTML server control so its an instance of HtmlInputText class.
If I double click on the control It only adds a OnClick event handler method inside the script tags in the HTML doc of the web form but how to I get to handle its Serverchange event exactly? does VS.net 2008 has no ability to auto wire up the event to the control, do I have to manually wire up the event handler?
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Sep 7, 2010
I am making a message module in asp.net with database of sql. i have made a gridview and enabled selecting. and a form view is synchorised with grid view on selecting. i am writing update sql but could not get a way to take data on Gridview or Formview to compare the record in sql database.
this is my page view
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This my vb code
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Jun 2, 2010
I have a web page with a gridview & formview (master/detail relationship) combo. On page load the gridview shows all records from a SQL table. On my page I have a button that when clicked shows the formview in Insert mode to allow users to add a new record to the data. I have also added a column to my gridview that has a link. When a user clicks this link it hides the gridview and shows the formview in edit mode with the detail from the record selected from the gridview.
In my formview I am using a listbox control to allow users to select multiple values. The choices in the listbox are populated by a SQL data table. I have successfully written code to post the selected listbox values to my SQL data field during Insert. When the user selects a record to edit I have code in the databound event to select values in the listbox from the choices based on the value in the sql data field. This works as well. My problem is that I cannot figure out the correct code to update my SqL data when a user is editing the record and makes changes to the selected listbox value. I have included my design code for my listbox in my formview edittemplate and also my behind code that I have attempted.
<td
style="width: 454px">
<asp:ListBox
ID="lbox_ConstructionType"
runat="server"
DataSourceID="SqlDataConstructionTypes"
DataTextField="Construction_Type"
DataValueField="Construction_Type"
SelectionMode="Multiple"
Width="144px"></asp:ListBox>
<asp:TextBox
ID="tbox_Ctype"
runat="server"
Text='<%# Bind("ConstructionTypeID") %>'></asp:TextBox></td>
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Sep 7, 2010
I've posted this some place else but have not heard from anyone and hoping I get better luck here.
Note: Sorry about the formating, not sure what happened.
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Apr 1, 2010
I have this problem everytime I change the select command to a custom command, and I do not know what is causing it.
My Formview will not update when i hit the update button, page refreshes but I get the same info, not the updated info. I set up my DataSource to CRUD only one table, then change the select statement just for the ItemTemplate of the Formview, leaving the rest, but it will not update
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Aug 19, 2010
I have a label on my master page (called mainMenu) that shows the number of items in a cart. The label wasn't getting updated when the cart was cleared until after an additional postback or redirect so I created a method on the master page called UpdateNumberOfItemsInCart to update the label text.
Using the MasterType directive on the Cart page allowing me to strongly type the master page, I can access the update method from the Cart page. There is a user control also named Cart that actually contains the 'clear cart' button so I setup an event on the user control also called UpdateNumberOfItemsInCart. I wire up the Cart control's event on the Cart page which then makes a call to Master.UpdateNumberOfItemsInCart();
So far so good except when I wrap the Cart control with an update panel the update to the cart count label doesn't happen.
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Sep 15, 2010
I am using a form view control which has two binded textbox. Now at this level it works fine and the textboxes show the values from database. But when i insert a panel inside the form view and move these two textboxes inside the panel, they dont show any values. What could be the reason for this?
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