Forms Data Controls :: Examine Data At "itemupdating" Event In Detailsview
Jan 11, 2011
I have a detailsview that is a mix of textboxes and dropdown lists. Upon clicking update - i want to examine all of the fields that have changed and do a custom update. I am trying to capture the data using the ItemUpdating method, capturing 'e' as detailsViewUpdateEventArgs. If i specify DataKeyNames in the ASP:DetailsView and only use one key (the primarykey) then i can step through the e.oldvalues and e.newvalues examining the data - but i don't have access to the field names (except for the single key i entered).
If i use all fields from the DetailsView in the DataKeyNames parameter - then i have access to all the fieldnames via e.keys(n) - but at that point i don't have access to the e.oldvalues (count=0) I am greedy - i want the keynames, the oldvalues and the newvalues.
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Jan 2, 2010
I use ObjectDataSource and DetailsView for Updating records . my Bll input parameter method is an Object instead of regular parameter . So i though i could make my own ObjectParameter in ItemUpdating event of DetailsView and i need some modifiation on the data that user input on boudfield in detailsView . I don't know how to access BoundFiled data from ItemUpdating Method of DetailsView.
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Jan 2, 2010
Can you direct me how can i access input data of DetailsView in ItemUpdating event? I want do some modification on data that user input to Detailsview.
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Aug 19, 2010
How to use RadioButton in FormView in EditTemplate to get information on the field, for example:
in the template:
<Asp: FormView ID = "FormView1" runat = "server" DataSourceID = "SqlDataSource1"
Width = "907px" onitemupdating = "FormView1_ItemUpdating" DefaultMode = "Edit">
<EditItemTemplate>
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<tr>
<td> <strong> Type Person: </ strong> </ td>
<td>
<Asp: RadioButton ID = "CHR_TIPOPESSOAFISISCARadioButton" Text = "F" runat = "server" Checked ='<%# Convert.ToBoolean (Eval ("CHR_TIPOPESSOA"). ToString (). Trim (). Equals ("F")
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Sep 26, 2010
So, to sum is up, I have a FormView:
[Code]....
And the relevant code:
[Code]....
What does work: I do see the right info if the formview is shown but when I click on the Update button it just doesnt fire the corresponding itemupdating event.
Can someone see what is wrong or missing?
What do I want to archieve: Just update the subscription's credits and its type: Upgrade, Prolong.
-edit-
New finding: I added 'onitemcommand="fvSubscriptionEdit_ItemCommand"' to the formview and a corresponding event method with a simple code that throw a exception(just testing) but it doesnt enter the method but does whine when the method is missing. So why does it whine if the method is not there but doesnt enter the method if it does exist? I presume that this is the same problem.
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May 19, 2010
I have a data bound control (using <%# Bind %>). I am trying to change the value of it before it gets udpated.
I use:
[Code]....
But the value is not changed to 1.
Also, e.Keys, OldValues and NewValues are all empty for whatever reason.
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Feb 23, 2010
Here's the setup
I have a DetailsView whose DataSource is an ObjectDataSource.
The ObjectDataSource has two methods, select and update, that are stored procedures defined in a TableAdapter.
The Select stored procedure takes 1 parameter--the record id--and returns the fields populated in the DetailsView.
The Update stored procedure takes three parameters--the record id, and two data fields.
The select process works fine. However, when the I submit the update, I get the following error:
ObjectDataSource could not find a non-generic method Update that has parameters: [all 21 table columns]
I am trying to only pass the (3) necessary fields to the Update stored procedure, but the DetailsView is apparently trying to update using all of the fields it received from Select. I know that I can access the NewValues collection from DetailsViewUpdateEventArgs, but I don't see a way to remove any of the parameters so that they match the definition in the stored procedure, the TableAdapter, and the ObjectDataSource.
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Mar 7, 2010
I have a DetailsView on my page, bounded throught ObjectDS (but I think it's not important). Some field is readonly for some users - based on role membership and other paramaters. I've tried to use the PreRender event to manage these field's readonly state. Everything is working - except one template field: when I click first time on Edit button the dropdown list stay readonly independently the role membership. When I click on Cancel than Edit again the control state is good. Code of PreRender event handler:
[Code]....
Environment:Web Developer 2008 Express .NET Fw. 3.5 Windows XP
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May 20, 2010
I need to do a custom update for a form view (I think/know), as some of the parameters that are required for updating values should not be updated by the users, such as userid of the person performing the action which is passed back to the database for auditing purposes.
Additionally, there are some fields, such as LastUpdatedBy, LastUpdatedDate that need to be seen, but not edited. The stored procedure on the backend takes care of this, and these are not parameters for the Update method. The FormView by default is trying to pass all these values back to the database.
Lasty, the select query of the object datasource is a stored procedure that performs several joins based on PF/FK relationships to bring back more meaningful information than just a FK, so some columns are just the joined value, and can not be updated directly. Again, formview is trying to pass these parameters
So given that, I have defined the following even handler for a simple form view:
(not sure if this is the way to proceed given the above, but...)
protected void FormView1_ItemUpdating(object sender, FormViewUpdateEventArgs e)
{
ProjectDetailsDataSource.UpdateParameters.Clear();
ProjectDetailsDataSource.UpdateParameters.Add("projectID", ((Guid)e.Keys["ProjectID"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("projectName", (string)e.NewValues["ProjectName"]);
ProjectDetailsDataSource.UpdateParameters.Add("description", (string)e.NewValues["Description"]);
ProjectDetailsDataSource.UpdateParameters.Add("projectTypeID", "1");
ProjectDetailsDataSource.UpdateParameters.Add("statusID", "1");
ProjectDetailsDataSource.UpdateParameters.Add("productID", null);
ProjectDetailsDataSource.UpdateParameters.Add("isComplete", ((bool)e.NewValues["IsComplete"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("isActive", ((bool)e.NewValues["IsActive"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("userid", Membership.GetUser().ProviderUserKey.ToString());
ProjectDetailsDataSource.Update();
FormView1.ChangeMode(FormViewMode.ReadOnly);
e.Cancel = true;
}
My questions are as follows:
1) Is this the right approach?
2) Is so, when I cancel the edit (because I did the update myself), and change mode, the FormView returns to read only mode as inteneded (good so far). However, when I hit F5 (refresh), the ItemUpdating method is called again, and updates the database.
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Jan 3, 2010
I have a detailsview that is listing a users membership data. userid, username etc... I have the info in template fields. Basically I have also created a button named "Delete User" at the bottom of the page outside of the detailsview. (detailsview is only displaying one user's data). When the button_click event is called I would like to delete the user using the command
[Code]....
Where username is a string I pass through from the detailsview. I am using VB and can't seem to find a way to bring the username value over from the detailsview into the button_click event.
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Jun 16, 2010
A DetailsView in Insert mode has all fields cleared after events such as the following:
1. Clicking New.
2. Clicking Cancel.
3. Clicking Insert (if the default mode is Insert).
I have some fields linked to ViewState and they are populatd at PreRender event handler. I am wondring if there is a single place where all relevant ViewState elements can be cleared instead of doing this in all possible relevant handlers such as ItemCreated, ItemCanceled, ItemInserted, etc.
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Apr 25, 2010
I have GridView control and assosiated DetailView control.
When the record form GridView is seleted, I am showing the details on DetailView.
I have set the Auto generated delete button to true. And now I want to delete the record when someone clicks the Delete button from DetailView control.
Following is the HTML markup for my details view
<asp:DetailsView id="detailsPayments" runat="server" GridLines="Vertical" ForeColor="Black" CellPadding="4"
DataKeyNames="Id" Width="125px" Height="50px" HeaderText="Payment Details"
AutoGenerateRows="False" BorderStyle="None" BackColor="White" BorderColor="#DEDFDE" BorderWidth="1px"
AutoGenerateDeleteButton="True" OnItemDeleting="DeleteItem">
<FooterStyle BackColor="#CCCC99"></FooterStyle>
[Code]....
But not able to sucessful. Getting runtime exception as follows
Stack Trace:
[Code]....
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Feb 17, 2011
I have a detailsview control, which I use to enter data and save to the database. I am using object datasource to connect to the db. The detailsview control has autogenerateinsert = "true". When the insert is successfull, I want to set some variables and and to redirect the page to a different one. I don't know how to access the insert button click event of the detailsview to do it. If there is different solution like using <insertItemTemplate> and using custom linkbuttons.
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Feb 17, 2011
I have a detailsview control which I use to enter data and save to the database. The control is connected to the db through a objectdatasource. When the insert is successful, I want to set some variables and redirect the page to a different one. The detailsview control has AutoGenerateInsertButton="True". I don't know how to access the insert button click event in the code behind,
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Sep 3, 2010
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:
picture1 picture2 picture3
name1 name2 name3
Contact1 contact2 contact3
what i ave coded as of now:
[Code]....
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Nov 17, 2010
I´m trying to link the gridview to detailsview and I used this page as my inspiration:
http://quickstarts.asp.net/QuickStartv20/aspnet/doc/ctrlref/data/detailsview.aspx
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.
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Aug 6, 2010
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.
.aspx
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AllowPaging="True" PageSize="10" OnPageIndexChanging="countryGrid_PageIndexChanging"
CellPadding="4" ForeColor="#333333" Width="400px" Font-Size="9pt" [code].....
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Feb 12, 2010
I have built a set of custom business objects that I have successfully bound to the GridView and DetailsView controls using the ObjectDataSource. I have been able to provide insert/update/delete functionality and all is working as expected. However, I am trying to wrap this functionality into a custom user control that allows the consumer to specify a table name and a list of column names and have it build this functionality on the fly without regard to the table structure (ie...available columns). I have been able to successfully get the GridView and DetailView to build the columns from code behind and I had all the CRUD working while using 2 panels to show/hide the GridView and DetailsView controls, but I wanted to add some AJAX ability to the control using Matt Berseth's modal popup example to make the interface slicker. The problem I am having is that the EditItemTemplate for the DetailsView control has to be specified in the code behind (because of the flexibile nature of the columns) and I can't figure out how to bind the data from code (rather than having the columns defined and bound in the markup). For all intensive purposes, I am trying to find the code behind counterpart to the following code snippet that binds the data to the textbox:
[Code]....
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Jun 16, 2010
I have a database containing a table with about 700,000 images so I recently enabled Filestream. However, I can't figure out how to render the images.
I have an Imagefield control within a Detailsview which is using an .aspx file to render the image through the DataImageUrlFormatString (which is typical). In my select statements I tried changing the binary field containing the image from objectdata to objectdata.PathName() per the Microsoft documentation but this does not work. I get the red X image box.
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Feb 4, 2010
Duplicate Data in Gridview and Updating textbox in DetailsView
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Feb 15, 2011
Just want to know if it is possible to Dynamically Populating a DetailsView with OleDb Data Adapter ? It has to be done on the Page_load because it has to display a users details that i must be able to edit!
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Mar 30, 2011
I use a Detailsview, Entity Data Source to edit/update my table with only 3 columns.(it has primary keys).
Everything works fine inserts/edit in dev environment. but when i run this in release mode. i cannot update existing data in the database with the detailsview. whenever i update and save page gets refreshed, but nothing gets updated. but whenever i insert a new record, and then i try editing it. it works.?
Note: i handle DetailsviewItemUpdating,DetailsviewItemInserting events to do some custom checks.
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Oct 31, 2010
I would like to find controls in the detailsview control placed in the EmptyData Template of the gridview. I am trying to create Insert new record for the gridview control.
1. If there are existing records in the table - works fine and sets my two values: I placed Detailsview and Insert Button in the footer of the gridview. I needed to set the values of two fields. When I click on the Insert button it saves new record and sets the field with the value (code attached - works fine). I also have a popup extender that opens detailsview - this works just fine.
2, If ther are not records in the table - saves record but cannot find and set controls on the detailsview Same thing setup in the EmptyData Template. The record is saved but I cannot Find and set the field value on the control.
1. Link button (on click) in the gridview footer (works fine)
protected void LinkButton1_Click1(object sender, EventArgs e)
{
string zupa1;
zupa1 = ddlSelectEmployee.SelectedValue;
try
{
DetailsView zupa = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1"); TextBox zupa2 = (TextBox) zupa.FindControl("txtInsertEmployee");
zupa2.Text = zupa1;
}
catch
{
}
DetailsView dettraining = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1");
TextBox training = (TextBox) dettraining.FindControl("txtTrainingType");
training.Text = "4";
}
2. EmptyDataTemplate.FindControl - can save record but cannot access txtInsertEmployee and txtTrainingType
DetailsView zupa = (DetailsView)gvTraining4.EmptyDataTemplate.FindControl("DetailsView1");TextBox
zupa2 = (TextBox)zupa.FindControl("txtInsertEmployee");TextBox
training = (TextBox)dettraining.FindControl("txtTrainingType");"4";
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Sep 15, 2010
I have a slight issue I awas trying to fix for 2-3 days, but nothing I try works.
The scenario:
DetailsView control in edit mode, I pass parameters to the SqlDataSourceProducts (edit.aspx?id=2) and the data source selects the appropriate data and fills in the DetailsView form.
Except two drop down lists. These two DDLs (DDL2 and DDL3) are dependent on the previous DDL (DDL1) in the DetailsView.
when the selected value of the DDL1 changes, DDL2 and 3 change their lists and get bound to the database.
The problem is: when I edit something from the database, DDL2 and 3 appear empty and when I update any other field and leave these, they get blanked in the database.
My goal is to set the selected value of DDL2 and 3 to the values in the database WHERE ID = QueryStringField="id".
I can go for not binding the data unless the field is changed, but does not sound professional and user friendly.
code:
The SqlDataSource used to select the parameters from the table and populate the DetailsView
[Code]....
The code of the fields that hold the DDLs in the DetailsView control
[Code]....
The codebehind:
[Code]....
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Mar 21, 2011
I am using DetailsView box (Visual Studio 2010) to display employee data based on Access table. One of the fields is an employee email, designed in the table as HyperLink. I want this field to be displayed in DetailsView as HyperLink also.
Is it possible to do this?
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