Forms Data Controls :: FormView Loses New Values On Error?
Feb 3, 2011
The new values entered by a user are lost when a error occurs.
I tried to solve this by catching the error in the item updated event as per the code below
[Code]....
however the data in the form gets set back to the original values.
It seams as though the object data source is rebinding the form. How can i determine if this is the case? Is there a way to stop the datasource from rebining?
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Apr 12, 2010
I have a typical gridview/formview master control setup. When I try to update or insert I don't get any errors but it also doesn't work. When I try to insert data all I get are null values and when I update, none of the values are updated. The formview looks like its working, but just doesn't. The primary key is an identity and it auto-increments by one.
[Code]....
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Feb 1, 2011
Using a class component, an Object data source and a formview I am successfully pulliing data from a SQL database. In some cases the rows contain one or more Null values and I would like them to be ignored completely. My simple code follows:-
<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
OUTPUT:-
Rose Cottage, 123 New Road, Margate,
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Dec 28, 2010
I am having a formview control with paging enabled. It's a simple page used for viewing pictures. (It's from the personal web site starter kit with some modification)
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I would like the formview to pass not only the pageindex value but also the Next or previous picture's unique ID called in my case PictureID?
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Oct 18, 2010
Here's what I am trying to do:
Inside Form View Want to display the average of a field based from field1/field2
ie:)
Field 1 = 10
Field 2 = 5
Field 3 would equal 2 (Field 1 / Field 2)
How would I go abaout doing this. Code currently looks like:
[Code]....
Using custom bind expression in the formview but it won't let me do this..
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Jul 22, 2010
I've been spending two days on this. My page formview is in a tab container and I need it to update, insert and display data. Insert and display are ok as long as the default mode is Insert. The problem here is edit mode, it's able to get values from the db(oracle) and display them in edit mode, but when I click save, any values I typed out on the textboxes do not get captured. When I call on my db update class, it just sends old db values. Here is the process: formview shows data selected from gridview, then an update button is clicked to edit the data. there is also a SAVE button to send updated data to db. Example: description textbox = "test", then I type out a different value, and in debug mode, the textbox.text still shows "test" after clicking save.
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Jun 10, 2010
In a details or form view I have a number of entries from a database
For example:
Pass-Attempts, Passes-Completed, AvgYds, TdPercentage
If I want to perform a simple calculation on these values, and then display them in the same details/form view
Such as:
QBRating =((Passes-Completed/Pass-Attempts)*100)+(AvgYds*5)+(TDPercentage*4)
With the ideal result being:
Pass-Attempts, Passes-Completed, AvgYds, TdPercentage, QBRating on the same Details/Form view.
So basically I need to programmatically get at those values, perform calculations on them and them display them back in the same control.
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Feb 19, 2011
How can be gathered values from Gridview and FormView row in an ListDetails page?
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Jan 5, 2010
I have a formview on a web page, set to insert mode as default. The form view is bound to a SQLDatasource. This datasource has a custom query written to select the details for this formview. The query joins two tables to provide relevant detail and not just an ID for one of the elements on the form view.
The first tabe contains information regarding projects and the second table contains detail regarding Resources. First table has the following definition:
[Code]....
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Jun 15, 2010
i have a formview1 in edit mode within a modal pop up extender and Update Panel
The update statement works but on the page is a gridview1 where I want
to display the new values.
I have added the below in page code but it still does not bind
the Gridview with new values when after I click UpdateButton in Formview - Only when I refresh the page.
protected void FormView2_ItemUpdated(object sender, FormViewUpdatedEventArgs e)
{
GridView3.DataBind();
ObjectDataSource50.DataBind();
}
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Mar 5, 2010
This is my mistake: If I put an AJAX Editor INSIDE a FormView it loses the layout (I see all the icons button disordered and the Editor without background). If I simultaneously put an Editor inside a FormView and externally in the page both works fine and I see both in the right way. I repeat: with another Editor in the page the Editor inside the FormView works fine!!
I think it may depend on the css, so I have tried to modify the "DesignPanelCssPath" and the "DocumentCssPath" of the Editor inside the FormView, but nothing has changed.
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Mar 15, 2010
In web config file I have add key values specified.
In the formview I have labels on edit , item and insert mode that I want to display all the time by getting those values from web config. I'm able to do that with no problem but when I change the modes between edit to insert or item view, I lose those label values until I hit the "select" twice from the Gridview, those values re-appear. Below is the snippet of the code. What do I need to do to retain the category values all the time?
[Code]....
[Code]....
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Feb 17, 2011
I have a listbox inside a formview in a details page(master/details). The values for the listbox will come from a lookup table and when the user select one or more values it should be inserted in a table. The process sould be like the following:
The user will select one or multiple values and click on a Select button. Then a label should show the selected values. Then the user will click on the Insert button in the formview to insert it in the database.
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Jun 29, 2010
I have a formview and within it I have a dropdown list which brings back a list of value from my database,
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Jan 20, 2010
Being A C++ programmer this is fairly new to me - I am working on a formview and have been facing a problem- The issue is simple - I want to display a success page after I insert a row successfully and a custom error page if the insertion fails (due to datatype or format mismatch with table in database).
To achieve this I am doing as follows -
1. Defining a custom error page in ASP.NET configuration tool (webconfig)
>> This page never works if I enter an incorrect format in formview. It would rather display the ugly page with Server Error information (for example) -
The string was not recognized as a valid DateTime. There is a unknown word starting at index 0.
question - Why my default page is not getting displayed? Is it because I am testing from same development machine or is it because the error page doesnt work for "Server Error" pages?
2. In the "iteminserted" event I am redirecting it to Response.Redirect("~/newitemconfirm.aspx")
>> If I do this, irrespective of whether the row insertion was successful or not, this confirmation page always gets displayed! I want it to be displayed only on successful insertion.
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Aug 9, 2010
I'm trying to create a Formview in ASP.net 3.5. The underlying SQL Server table does not have an identity field based Primary Key. The primary key is a 4 character user entered field. I have created the form and all looks good but I get the following error message when I try to insert a record
Could not find a row that matches the given keys in the original values stored in ViewState. Ensure that the 'keys' dictionary contains unique key values that correspond to a row returned from the previous Select operation.
I thought ViewState was supposed to resolve the issue. I have viewstate enabled on the page and the formview but that doesn't seem to make a difference.
How can I create a form view with a user-entered text field as the primary key and get the b.... thing to work?
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May 4, 2010
I have a FormView with an EditTemplate.And the EditTemplate contains an ascx control:
<asp:FormView
ID="fvTicketUpdate"
runat="server"
[code]...
The contents of the ascx control has TextBox and DropDownList controls binding to the results of the FormView's ObjectDataSource through Text='<%# Eval("field1") %>'and SelectedValue='<%# Eval("field2") %>'.This works fine and I have been building all of my front end pieces like this as <asp:Panels> rendering as FieldSets that go 100% across the screen.And we call these areas "strips" accross the screen.But now I've run into a problem.One TextBox and one DropDown bind fine to a Ticket Object.But the DropDownList that works has its <asp:ListItems> hardcoded before hand.Now I have DropDownList that gets populated through a WebService in the ascx's
code behind like this:
public partial class UserControls_FormControls_PntipUpdtFaaInfo :
System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
[code]...
The Problem I think is the FormView is trying to do its Bind to the objectDataSource before its child ascx control is loaded in the Edit Template.And I am getting this error:
Databinding methods such as Eval(),XPath(),and Bind() can only be used in the context of a databound control.Meaning that the control must already be databound to bind the selectedValue to a Property of the TicketObject.Is there an easy way to force the order of loading to make the PntipUpdtFaaInfo control load and have its Page_Load execute and bind ddlEquip before the FormView does its first dataBind and executing its Evals?Otherwise I have to take out the eval on the ddlEquip SelectedValue attribute and go to the Parent Page and hack and force everything to happen when it needs to.This layout has worked out well for me.All of the ascx area strips across the screen share the same Validation Summary for example.It allows me to think about one section at a time and the Properties to the Business Obect and CRUD methods as I go.But this is a big brick wall I've hit.
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Feb 13, 2011
I am using a formview on main web page and the Item template displays my data correctly but I get and error when I try and link to the edit or insert templates.This happens on our remote tesing server only.On my local machine running the page on the local server in VS 2010 everything works fine.But then doesn't it always work on your local machine.I might also mention that I am compiling for asp.net 4.0.
Here is the stack trace :
System.Data.SqlClient.SqlException (0x80131904): Login failed for user 'MYCORPABIGWEB01$'. at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
[code]...
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Oct 6, 2010
To me this should be much easier, but I can't seem to retain the values that are put in the Insert template upon a validation failure or when the sql fails. This will prevent the user from having to retype everything agin in the event of a failure.
As you can see I am using the Sub Insert_Click and not using an insert through the wizard. so the fields are unbound textboxes on the form. There are 2 dropdowns that provide choices for the other fields.
I pasted in the code using the text only option becuase the format was getting messed up. I probably need more background on why the fields are blanking out.
[code]....
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Jul 15, 2010
I have my data grid and sort on a column but the row formatting stops working. I simply selected a format using the autoformat option and picked classic. Am I meant to reapply the row formatting after the sort? And if so how?
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Feb 11, 2010
I create a gridview dynamically to fit the contents of a datatable...This form will have other dataatbles thrown at it but for the moment I am only working on one to work out the details of the process.I will post all my code below...the problem is this. The code successfully geenrates the gridview the way I want however...whenever I select a row all the cells including the header cells dissapears
[code]...
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Sep 10, 2010
I would like to ask if it is possible to access data on a master FormView from a nested detail FormView.
I have a main form (master) with several tabs (detail) and would like to display a label with text from main form that is hidden by the tab at the moment of editting. My asp page looks like this.
[Code]....
Is it possible to get the value of the label CompanyTextLabel from CompanyTextBox using just ASP.NET expressions or something similar without writing c# code in .cs file?
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Jun 3, 2010
I noticed that with some of the data controls (like gridview and listview) the page loses focus when you click edit, update, etc. So if your data control is somewhere lower on your page, you'd have to scroll down to get to it again. Is this normal or is there a way to keep the focus or location on where you were previously?
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Feb 5, 2011
I have a Gridview with edit and update feature enabled. It displays the data correctly but when I click on the Edit linkbutton(to edit the data), I get the error "Object reference not set to an instance of an object".
I tried debugging and found that the row which I click (say editindex is 1) loses its value. I could identify this while debugging the code, when the code flow moves to the rowdatabound event, the label (or for that matter any control in the rowdatabound event) shows a null value and eventually errors out.
I am unable to figure out as to why the control specified in the rowdatabound event loses its value when editing. Note: The lost valueow data is the one which I tried editing.
I am attaching the code which I have written for the rowdatabound event.
[Code]....
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Apr 5, 2010
In my access datasource, I have set the selectcommand to what the user desires via a DDL. So the user chooses say, all names beginning with "B". But as soon as user clicks to page to the next page, the filter is gone. What is the way to preserve the filter. I have only merely rebound the gridview in the Pageindexchanging event which obviously is not doing the trick. Does this call for a session var to hold the users choice?
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