Forms Data Controls :: How To Access Inside FormView In CodeBehind

Jan 30, 2010

I am trying to access accessing a control in a Formview. I have tried several methods, but nothing seems to work

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How do I access a specific control within a FormView's "<InsertItemTemplate>"?

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Basically as the title of this thread states, I have a FormView that has a GridView inside it and my ObjectDataSource that populates this grid cannot access the Grid.

The Control Id needs to be the name of the Grid I want to access, however through the 'wizard' the Control parameter drop down cannot 'see' the grid I need, only the FormView that is in.

I have tried numerous ways to get round this and am struggling now..

I've tried the following...

ControlID="FormView.GridView1"

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Access Controls Inside FormView From Code Behind

Dec 18, 2010

I have a checkbox and a panel inside of a FormView control, and I need to access them from the code behind in order to use the checkbox to determine whether or not the panel is visible. This is the code that I originally used, but since I put the controls inside of the FormView, it no longer works.

Protected Sub checkGenEd_CheckedChanged(ByVal sender As Object, _
ByVal e As System.EventArgs)
If checkGenEd.Checked = True Then
panelOutcome.Visible = True
Else
panelOutcome.Visible = False
End If
End Sub

I've started to figure this out based on other questions I looked up on here, but all of them were in C# instead of VB, so this is as far as I got:

Protected Sub FormView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles FormView1.DataBound
If FormView1.CurrentMode = FormViewMode.Edit Then
End If
End Sub

So yeah I'm not sure exactly how to finish it. here's my code now:

Protected Sub FormView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles FormView1.DataBound
If FormView1.CurrentMode = FormViewMode.Edit Then
CheckBox checkGenEd = formview1.FindControl("checkGenEd");
Panel panelOutcome = formview1.FindControl("panelOutcome");
End If
End Sub

It's also saying that checkGenEd and panelOutcome are not declared. I changed my code to this but it still doesn't work:

Protected Sub FormView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles FormView1.DataBound
If FormView1.CurrentMode = FormViewMode.Edit Then
Dim checkGenEd As CheckBox = FormView1.FindControl("checkGenEd")
Dim panelOutcome As Panel = FormView1.FindControl("panelOutcome")
If checkGenEd.Checked = True Then
panelOutcome.Visible = True
Else
panelOutcome.Visible = False
End If
End If
End Sub

There aren't any errors anymore, but nothing happens when I click the checkbox. I think there needs to be some kind of event to trigger it but I don't know how you can put an event handler inside of an event handler.

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Forms Data Controls :: Populating DropDownList Inside A ListView Inside A FormView

Jan 16, 2010

I have the following (abbreviated) code:

<asp:FormView ID="FormView1" runat="server" DataKeyNames="ItemID" DataSourceID="LinqDataSource1">
<EditItemTemplate>
<asp:DropDownList ID="ddlCategory" runat="server" SelectedValue='<%# Eval("Category") %>'
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</EditItemTemplate>
<ItemTemplate>
<asp:ListView ID="lvParticipants" runat="server" DataSource='<%# Eval("Participants") %>' >
<InsertItemTemplate>
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</InsertItemTemplate>
</asp:ListView>
<ItemTemplate>
</asp:FormView>

When the FormView is in Edit mode, ddlCategory is populated as expected by calling GetCategories(), which returns a List of categories. However, when the ListView is in Insert mode, ddlCountry is empty. I put a break point in GetCountries(), but it never gets called. If I change the name of the method, I get an error. So it recognizes the method at compile time, but does not call it at run time. I'm guessing this is an embedded binding issue of some kind, but I'm hoping someone can save me a lot of time by pointing out the solution.

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Forms Data Controls :: FormView EditItemTemplate DropDownList Loaded From Codebehind Via Stored Procedure?

Sep 3, 2010

I'm attempting to load DropDownLists from the C# codebehind as the FormView switches modes to Edit and displays the EditItemTemplate. I present the data in a FormView ItemTemplate using text boxes. When the user selects Edit, I have been attempting to load the EditItemTemplate dropdownlists by creating a dataset and binding it to the control, without success.

I've successfully loaded them in previous projects from within the .aspx code using <asp:ListItem> and within the C# code behind using Control.Items.Add(new ListItem), which are essentially the same thing of course . This project is different in that I want to get the data from a stored procedure on a MSSQL server.

In my latest attempt, I can see the data in the datasets. I'm getting "Error connecting to database.'eitRace' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value"

I include the code below. If someone could point me to an example I would be greatful. There has to be an elegant way of accomplishing this.

[code]....

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I have a div with id="myDiv" and runat="server" inside a listview with id="lvItem".I need to access the div in code behind to add width of the div at runtime.How can I access the div from codebehid using C#?

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Aug 20, 2013

I trying to save clients IP address who are submitting the data on my website.  I have downloaded an example and implemented. That scrip displays IP address on the webpage. I can submit this to sql table through code behind.  Now I want to use same script in FormView and I am unable to bind this with the text box as it is showing an error "The name IPaddress does not exist in the current context". My code is as under :

<script runat="server">
protected void Page_Load(object sender, EventArgs e) {
string IPAdd = string.Empty;
IPAdd = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (string.IsNullOrEmpty(IPAdd))

[CODE]....

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i hav created different rolegroups such as candidate,content developer etc... i hav put datalist views in different rolegroups i want to access those datalist view's controls in codebehind how do i do it? my code behind is in vb.....the code .aspx :

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code behind is wat i want for OnClick="TestCheck" so tat whn i click on tat link i cn verify whether candidate has given the test or not...rght nw i cnt access datalist1 in code behind..

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Sep 5, 2010

While running ItemDetabound upon load of a listivew, I am trying to access the text in a label of the LayoutTemplate of a different Listview. It works fine if I try access the same labels under the same names if they are in the same listview, but not if they are in a different one. It was working for a while, can't figure out what I changed, but now says that object doesn't exist.

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Forms Data Controls :: RadioButtonList Inside A FormView?

Feb 27, 2010

In the website I'm building, I have a form that allows new users to register. Part of this page has mandatory address fields, and I use a postcode lookup field which returns a SuburbID and FullSuburbName (Suburb, State & PostCode) to a RadioButtonList inside an UpdatePanel.

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I then handle the insert process in codebehind, and all this works perfectly on my New Account page.What I'm trying to do now, however, is replicate this functionality in the Edit Template of a FormView on my Manage Account page. The idea being that the user can view their current details in the ReadOnly view, then switch to Edit view to change their address (amongst other details of course). When the FormView changes to Edit mode, it should display the user's current PostCode in the textbox, and the RadioButtonList should display the available Suburbs for that PostCode, with the user's current SuburbID as the initial SelectedValue. If the user changes the PostCode and hits search, this refreshes the RadioButtonList with the new list of Suburbs, and once they have selected a new SuburbID this should get written back to the DB with the rest of the form (when they click Save I mean), using the SQL Data Source Update element. However, I simply cannot get this to work inside the FormView Edit Template and

So far, I have tried to handle the FormView's ItemCreated event and populate the RadioButtonList with the Suburbs that match the user's current PostCode, but if I do this with SelectedValue='<%# Bind("SuburbID") %>' in the RadioButtonList, I get the error "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control."If I then change it to have the SelectedValue populate from the codebehind, this works on the initial switch to Edit mode, but when the user changes the PostCode and hits search, I get a different error "'rblSuburb' has a SelectedValue which is invalid because it does not exist in the list of items."My thinking was that rather than binding the RadioButtonList I would just add the new SelectedValue in the SQLDataSource_Updating method, but it doesn't seem to like that either.

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Forms Data Controls :: Accessing A Check Box Inside Of A Formview?

Jul 2, 2010

I have added a table to my FormView Edit template for structure and a button that pops up a form for information.

When the button is clicked I want a check box in neighboring cell to become checked. But I am having problems in the VB code behind, establishing the name of the check box to change its state. Its something like this....

FormView1.ItemTemplate.(CheckBox1.Checked = True)

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Jan 17, 2010

Ok i have a dropdownlist inside a formview.When i select to update the formview the dropdownlist will automatically go to the first item on the list.

Is it possible to keep the item that is currently selected before i go to the update formview page?

I can get the dropdownlist from the formview with Findcontrols but then?

P.S. My dropdownlist is declared inside the formview

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Forms Data Controls :: GridView Inside FormView With ObjectDataSource

Mar 20, 2010

I have an ObjectDataSource giving me data similar to: OrderNumber OrderDate OrderValue OrderItems The first three are simple data types and the last has multiple occurrences of another class: OrderLineNumber OrderItem OrderQuantity The ObjectDataSource will only contain one row (which might make things simpler). So, there will be one OrderNumber, OrderDate and OrderValue; and then several occurrences of OrderItems (each containing OrderLineNumber, OrderItem and OrderQuantity).

I am displaying OrderNumber, OrderDate and OrderValue in the FormView - that work's fine, as expected. I have placed a GridView within the FormView and am failing miserably to get it to bind to OrderItems. I have tried the obvious things like specifying "odsWhatever.OrderItems" as the DataSourceID for the GridView, but to no avail.

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Forms Data Controls :: Popup Calendar Inside A Formview

May 26, 2010

So I have tried both the Ajax Control Toolkit (which didn't work -- page didn't even display, got an error message about assemblies not registered.

AND implement use of the JQuery datepicker. Which I do have working OUTSIDE of FormView. Once I put it in FormView it doesn't display. Spent all day on this crap and have absolutely nothing to show for it but a bunch of code that doesn't do what I want it to....grrr...my inadequacies are irritating me (can you tell?)

Any help to get it working inside the Formview and bound to the Date field for my insertemplate. The FormVendorVisit is only used to insert the following fields: vendor_visit_id (identity / pk / not even visible on the formview inserttemplate), vendor_id, time_spent, date(this is where I am running into problems getting a popup calendar to select the date. My "ButtonInsert" in the formview takes care of the rest and works perfectly if I enter a date manually.

Here's my code on my aspx page:

[Code]....

My code behind vb page doesn't have too much in it yet and nothing with the datepicker:
[Code]....

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Forms Data Controls :: Disable Fields Inside A Formview?

Feb 25, 2011

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The above code works if there are controls directly inside a update panel. But what if I want to disable a button or a tex box that is inside an Edit template of a formview.. that is in a panel.

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Forms Data Controls :: Binding A Checkboxlist Inside A Formview?

Feb 22, 2011

im learning webforms and asp.net in general and what i have so far is a formview that displays data being pulled from a sqldatasource, but i also want a checkboxlist that can be used to input information and display information. this checkboxlist is insode the formview. the problem im having is that my formview is calling a datasource with an specific stored procedure with one table and my checkboxlist needs to called another stored procedure that has a different table. formviews does not allow you to have tow different datasources so how can i make this possible? ill paste the front end code and the backend code so you guys can see what im trying to do.

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backend:

[Code]....

and my util where the booleans are being set

[Code]....

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Jan 20, 2011

protected void FormView1_ItemInserted(object sender, FormViewInsertedEventArgs e)
{
// Here I want to make a label "Saved" visible after user inserts the record into the formview.
// the label is in InsertItemTemplate of the formview next to Insert and Cancel Links. It is invisible by default.
// Is this the right event that i am in to do something like this.. if there is any other way to do this,
}

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Forms Data Controls :: How To Control The Dropdown Which Is Inside FormView EditItemTemplate

Jan 27, 2010

How to write code in vb.net to control the Dropdown which is inside FormView EditItemTemplate. FormView named "frmFaultsReg" DetailsView named "lstStatus" Actually what i want to do that there is a textbox inside FormView EditItemTemplate and ItemTemplate to insert Closing date. lstStatus has a value PENDING and CLOSED. If a user select CLOSED from lstStatus then the date textbox named "ClrDateTimeTextBox" should show current date time and to insert into database and if user again selects PENDING from lstStatus then the date textbox should show empty. I think the postback of lstStatus should work but lstStatus is inside the FormView thats why I am unable to hook it.

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Forms Data Controls :: DropDownList Inside FormView Insert Template

Sep 13, 2010

I am trying to change the textboxes in the FormView insert template to dropdownlists but they keep setting the parameters to null. Here's what I have:

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In Page_Load

CType(frmSurvey.FindControl("ddlYearOfQualification"), DropDownList).Items.Add(New ListItem("2010", "2010"))
CType(frmSurvey.FindControl("ddlYearOfQualification"), DropDownList).Items.Add(New ListItem("2009", "2009"))

and in the SqlDataSource

InsertCommand="INSERT INTO [tblSurvey] (... [YearOfQualification] ...) VALUES ( ... @YearOfQualification ... )

And in insert parameters:

<asp:Parameter Name="YearOfQualification" Type="Int16" />

And the insert fails with YearOfQualification as null. If I sue the standard textbox:

<asp:TextBox ID="YearOfQualificationTextBox" runat="server"
Text='<%# Bind("YearOfQualification") %>' />

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Forms Data Controls :: Accessing Inside Formview Edit Template

Jan 6, 2010

I keep getting a null reference when I try to access a listbox inside the EditItemTemplate of a formview. I check the mode before accessing the control (Formview1.CurrentMode) to make sure it is in edit mode and even set it manually to edit mode again! But formview1.findcontrol("blah") returns null. Formview1.EditItemTemplate does not have a FindControl method, not sure what else to try.

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Mar 23, 2010

I have a UserControl inside the ItemTemplate of my FormView and I need to access it in order to get an event fired off. As the UserControl is inside the template, my event cannot see it!

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Forms Data Controls :: Unable To Add A Literal To A Panel Inside A Formview

Nov 14, 2010

I am facing a problem with panel inside a fromview...when i am trying to add some to the panel its not working....My code is as follows

[code]...

I tried with the place holder and its worked fine but not with panel...

Is there any way to add CSSClass to a place holder...

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