DataSource Controls :: FormView Bound To LinqDataSource Shows Data But Won't Update Database

Feb 10, 2011

I have a FormView bound to LinqDataSource, that is intended to allow editing of a single product's details, that is selected from a GridView. The LDS has a Where parameter set to point to the GridView control (i.e. a ControlParameter).

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DataSource Controls :: Sorting A ListView Bound To LinqDataSource Based On Child Object?

Jul 22, 2010

This was a pretty disappointing moment - when databinding, using Eval("Contact.LastName") would work. It nicely evaluates the related Linq object's member LastName. If the "Contact" object is null, no error is thrown... instead the field is simply null.

However, the same does not hold for sorting - if there exists a null entry (this object does not have a Contact) then the LinqDataSource throws a NullReferenceException. This means that, if you ever have nulls on your foreign-key objects, you can't use sorting headers in the ListView.

This makes the feature moderately useless - I have to roll my own properties for every single field I'd ever want to sort on. That's insane.

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DataSource Controls :: Getting Value From LinqDataSource In FormView DataBound Event?

Mar 16, 2010

I just started working with LinqDataSources and I was wondering how you retrieve values in a FormView DataBound Event.

With an ObjectDataSource I believe you can grab them like:


Is there a similar way to acheive this with a LinqDataSource?

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DataSource Controls :: Programmatically Add An Updateable Formview With Linqdatasource?

Aug 7, 2010

I have a gridview on a page and based on the row selected I need to fill out a form view (dynamic data enabled) from a linqdatasource. On gridview_sleectedindexchanged I create the linqdatasource and set it as the datasource for the formview. It displays nicely but clicking update returns a "Could not determine a MetaTable" error for the datasource mapped.

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Oct 21, 2010

have detailsview

ID="dtlviewRecommendation" DataSourceID="LinqDataSourceRecommendation"


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I have set up Linq to sql. I now need to fill a formview with a select that does a join across a few tables. Have not been able to find any example or tuts that go beyond the simple select. Any suggestions? Can this even be done?

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Forms Data Controls :: Using A Formview To Update A Database With A Insert Button

Jan 5, 2011

I am *VERY* new to This may seem simple to you all, but I'm really lost. I have a small sized page with three text boxes (part of the InsertItemTemplate) of a formview, and a slightly modified link the system generated to submit the data to be inserted in the database:


If this page is run, it inserts the data into the database fine, clears the form and sits there. I want it to return a simple "Thank you" page in a window of the same size, with a Close Window buttom at the bottom to close the window:


When I set the postbackurl property on the first page, everything appears to work, except the write is never done to the database. If I remove the postback, it works as it did previously.

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Apr 19, 2010

i want to update the data of a database through a gridview update button

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Apr 27, 2010

I have a stored procedure and a function. I am connecting my FormView to the function and I am trying to insert a new record. I am not sure if the problem is the stored procedure, the fucntion or the FormView.

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DataSource Controls :: Get Data From A LinqDataSource From Code Behind?

Nov 18, 2010

If I have a Linqdatasource that isn't connected to a a bound control on my page how do I use the data source to read data in the code behind. ie

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C# - LinqDataSource Bound To Dynamic List?

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Im trying to create LinqDataSource that will represent data from dynamically created String list and then use it as a datasource to my GridView.

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DataSource Controls :: Retrieve The Data In Linqdatasource In Code Behind?

Jul 30, 2010

How can i retrieve the data in linqdatasource in code behind?i have a dynamic database design with column storing the datatype eg. text, int, date.i need to retrieve the value in order to populate the control and bind it.

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DataSource Controls :: SqlDataSource, FormView, And Update With Stored Procedure In Code Behind

Sep 12, 2010

Using a FormView with a SqlDataSource, I'm attempting to Update data

by calling a stored proc in code behind. I was having trouble getting parameters

using Update Parameters in the SqlDataSource, but found a working solution by

coding the parameters.

The problem now is I'm getting an "Updating is not supported by data source 'XYZ' unless UpdateCommand is specified'.

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DataSource Controls :: ListView With LinqDataSource Doesn't Display Data?

Mar 30, 2010

I have a ListView with a LinqDataSource that's not displaying data. Here is my source code:


why the data won't display? As far as I can see, I've done everything right.

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Forms Data Controls :: Update Table When Shows Image?

Oct 27, 2010

update table when shows image?{solved!}

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Forms Data Controls :: Binding Formview - Update Personal Class When Change Textboxes And Click Update Button?

Apr 3, 2010

I have the follow form view:

Text='<%#Bind("PrimerNombre") %>'></asp:TextBox>
Text='<%#Bind("SegundoNombre") %>'></asp:TextBox>
This formview is bound in this way:
protected void Page_Load(object sender,
EventArgs e)
Persona _persona =
List<SILPA.AccesoDatos.Generico.PersonaIdentity> persona =
FormView1.DataSource = persona;

When the page is shown, the textbox are filled correctly, this textbox are filled with the "primernombre" and "segundonombre" properties from the persona class. After this, If I change the textbox, and after click the update button, I need to update the persona class with the changes from the textboxes, then I call a ActualizarPersona method for updating the database. How can I do for update the persona class when I change the textboxes and click the update button? I try this method protected void FormView1_ItemUpdating(object sender, FormViewUpdateEventArgs

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DataSource Controls :: How To Update Data Information In The Database Using Dropdown List

May 19, 2010

I build a webpage to edit the data entry, all the textbox wroks fine. However when I update the value originally took in using dropdown list , I get error and couldn't get correct update.

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DataSource Controls :: Row Count Shows 1 Record But There Is No Record In Database Table

Jun 24, 2010

I am counting from a table for that i have written code as below

protected void get_Id_Afterpoint()
int counter = 0;
string strSql = "select count(*) as ID from tblEnergy where ID=?";
OdbcCommand com = new OdbcCommand(strSql, con);
com.Parameters.AddWithValue("ID", DropDownList1.SelectedValue);
OdbcDataAdapter oda = new OdbcDataAdapter(com);
DataTable dt = new DataTable();
if (dt.Rows.Count == 0)
lblID2.Text = "1";
counter = dt.Rows.Count;
counter = counter + 1;
lblID2.Text = Convert.ToString(counter);

there is no record related to DropDownList1.SelectedValue. but as i am counting if(dt.rows.count) and i put break point on the bolded part it shows 1 record. how it can be possible?

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Forms Data Controls :: Way To Update For A Manually Bound GridView

Mar 3, 2010

I am having a hard time updating from my gridview based the value that I am setting in the datakeynames it is the Ucc field I keep getting and index out of range exception on the e.keys[0]. I have done this before so I am confused what I am missing here.

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Forms Data Controls :: Read Only Bound TextBox Does Not Update?

Jan 12, 2010

I have a TextBox in a nested FormView that I want to use for entering a date. I have added a calender extender to the TextBox and I want to set TextBox to read only so that the date can only be entered by using the calender extender. This way I can avoid improper date formats.

The problem is that when I enter a new date and click the Update button, the new date is not saved to the database. I have done some searching on the WEB for a solution, and I found that "Page.Form.SubmitDisabledControls = True" is used in the Page_Load event to solve this problem. I have tried this and it does not work.

Another solution that I have seen is to set the control to readonly at runtime in the FormView "ItemCreated" event. I have been unable to access the "ItemCreated" for this FormView because it is nested.

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DataSource Controls :: Linq / ObjectDataSource With Only A Few Database Fields On Formview

Feb 24, 2010

I am working on an application and am attempting to use Linq with and ObjectDataSource but I only want to display/update 50% of the fields that are in the corresponding table. It appears to me that for this to work correctly, I need hidden fields on my form for all of the data fields from the table that the user cannot access. Is this the only way to do this? I have the following in my update method of my ODS:


The problem is, only the fields that appear on the form have data in them.

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DataSource Controls :: Cannot Update DataBase By Using UPDATE Query

Jul 6, 2010


Im trying to update my DB(DataBase) by using SQL UPDATE query ,but its not updating in the dataBase i receive confirmation(in testLabel) that one row is affected(dataReader = query.ExecuteReader(); return numbers of rows affected)...

I have given a HTML editortext control on a page,which generates HTML (i have to store it in my DB,that page is only for Admin) ,on pressing Update button , im receving in my testLabel that one row is affected(which shows DB is updated succesfully) but when i check my DB its in old state,it is not updating...

Here is my Event handler of Update Button which have to make updates in DB:



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Forms Data Controls :: Insidious Bug Found For A Bound Gridview With UPDATE Command?

Feb 17, 2010

Bug: UPDATE command Does NOT Work as Expected on a DataBound GridView This was tested in VS2005 and VS2008

Took a while to figure this out - A simple recurse thru Page Controls Makes UPDATE Not Work as expected.

To Recreate this bug:

A simple Gridview bound to an Objectdatasource on a page with ALLOWEDIT ALLOWDELETE

If one inserts some code (a function call in my example) that just recurses the PAGE controls in either the PAGE_PREINIT, PAGE_INIT, PAGE_INITCOMPLETE events,

Then the UPDATE does not FIRE! and After Pressing UPDATE the GRID does not BIND! You Get A Blank Page - Funny thing tought it's only the UPDATE Functionality that gets affected by this - Everything else works fine including EDIT & DELETE.

If the same function call (recurse thru page controls) is added in the PAGE_PRELOAD, PAGE_LOAD -- Then the UPDATE starts working again as expected.

BELOW Is SAMPLE Code using the NORTHWIND DB Products Table and a Typed DATASET.XSD - You can use your own datasource for the ObjectDatasource - (Note I took out the Foreingkey constraint in products table from Nortwind for delete to work)

NOTE: One should be able to just cut and paste the function PAGECONTROLS_RECURSETEST on any working form that has a bound Gridview with Update functionality and you should be able recreate the bug that way by calling the function from the different page_events


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Forms Data Controls :: Gridview Update - Bound Fields Visible Set To False Not Working?

May 20, 2010

I have an Objectdatasource configured with Select, Insert, Update & Delete queries in a Dataset. This datasource is linked to my Gridview. I do not require all fields in the table to be displayed or updated in my grid so i have turned off the Visible property on several.

However, when i go into Edit mode and trigger the UPDATE to the database table, i get NULL values updated in the columns i set False for the Visible property.

How can i remove these columns from the GridView and the Edit mode and still have them UPDATE with their current values instead of being overwritten with NULL's?

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DataSource Controls :: Tried To Update My Current Database With The Triggers To Input The Schema Into The Already Existing Database Can't Get That To Work?

Jan 22, 2010

Creating a system with web front end and SQL backend (microsoft obviously). I have tried using the asp.netsqlprovider but i can;t as i am only allowed one database on the server, so i then tried to update my current database with the triggers to input the schema into the already existing database.Next step i create my own table with two simple fields of username and password and try and authenticate that way, i can't get that to work either.

I ahve limited permissions on the network as i am a University Student. I really don't know what to do. Never had to create a log on system before and i thought it would be far simpler than this. I ahve used Microsoft's sqlprovider schema before and it worked fine. I have also authenticated via IIS and AD too before. I can't do any of those two in this instance it seems.I need an alternative for logging in users, if needs be in can be crude. I also still need to have some kind of two different views too for logged in users and not logged in users, but that can change if needs must.Don't let me down people, haha. Think this posts in the correct place, i could not find another one i thought could be more relevant.

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