Initialize The Controls In An InsertItemTemplate?
Mar 21, 2010
I have - for instance - an asp:FormView which supports Read, Insert, Update, Delete and is bound to a DataSource:
[code]....
If I am in Read-Mode or Edit-Mode the control is initialized with the property MyText of the current object which is bound to the FormView.
But when I go to Insert-Mode I do not have a "current object" (FormView1.DataItem is indeed null) and the controls are empty.
If I want to have my TextBox control initialized with a specific value how can I do that? In which event can I hook in to set default values to the controls in the InsertItemTemplate?
Especially I have in mind using an ObjectDataSource. I was expecting that the InsertItemTemplate is initialized with a business object which underlies my ObjectDataSource and which is created by the ASP.NET framework simply by using its default constructor when the InsertItemTemplate gets activated. In the default constructor I would init the class members to the default values I'd like to have in my controls of the InsertItemTemplate. But unfortunately that's not the case: No "default" object is created and bound to the FormView. So it seems I have to initialize all controls separately or to create the default object manually and bind it to the InsertItemTemplate of the FormView. But how and where can I do that?
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Apr 23, 2010
I have FormView in my page markup:
[code].....
In theory, I'm able to find control on FormView after it being data bound. But I'm not. Why?
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Jul 30, 2010
The situation: a FormView with an EditItemTemplate and an Insert Item Template. When the page is entered and a record exists in the datasource, everything is fine with the Formview in Edit mode and the Edit ItemTemplate being used. But when no record is present, the FormView uses the EmptyDataTemplate even though it was switched it to Insert mode. Here is the code used to switch modes, fired in the OnDataBound event:
protected void SetModeAndHeadings(object sender, EventArgs e)
{
if (FormView1.DataItemCount == 0)
{
FormView1.ChangeMode(FormViewMode.Insert);
}
else
{
FormView1.ChangeMode(FormViewMode.Edit);
}
etc...
}
Is the problem that it switched to Insert mode too late? What has to be done differently here to automatically switch between Edit and Insert modes?
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Jan 19, 2010
I have the following ListView (extra code removed for clarity) :
<asp:ListView ID="lvParticipants" runat="server" DataSource='<%# Eval("Participants") %>' >
<EditItemTemplate>
<asp:DropDownList ID="ddlCountry" runat="server" SelectedValue='<%# Eval("Country") %>'
DataSource="<%# GetCountries() %>" DataTextField="Text" DataValueField="Value" />
</EditItemTemplate>
<InsertItemTemplate>
<asp:DropDownList ID="ddlCountry" runat="server" SelectedValue='<%# Eval("Country") %>'
DataSource="<%# GetCountries() %>" DataTextField="Text" DataValueField="Value" />
</InsertItemTemplate>
</asp:ListView>
The Insert row in the ListView has an empty DropDownList and GetCountries() is not called. However, if I click the Edit button on an existing row, GetCountries() is called twice (not sure why) and the DropDownList is properly populated. Why isn't the InsertItemTemplate DropDownList getting populated?
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Aug 9, 2010
I have a dropdown list in ListView control in InsertItem Template. I want to bind the DropDownList when I Click on Link. I want to bind it in CodeBehind not to use Datasource. I tryed lot but not finding the DropDownList. See My Code....
<InsertItemTemplate>
<tr>
<td colspan="7">
</td>
</tr>
<tr>
<td colspan="7">
<table border="0">
<tr>
<td> </td>
<td>
Sector</td>
<td>:</td>
<td align="left">
<asp:DropDownList ID="DropDnSector" runat="server" ></asp:DropDownList>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" Display="Dynamic"
ControlToValidate="DropDnSector" SetFocusOnError="true"
ValidationGroup="vgUpdate">*
</asp:RequiredFieldValidator>
</td>
</tr>
</table>
</td>
</tr>
</InsertItemTemplate>
lnkNew is my linkbutton outside the ListView
Code Behind:
Protected Sub lnkNew_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lnkNew.Click
Try
lvSubscription.InsertItemPosition = InsertItemPosition.LastItem
lvSubscription.EditIndex = -1
BindDropDownList()
fn_ShowSubscriptionLevel(fn_BindSubscriptionLevelEvents)
Catch ex As Exception
fn_ShowMessage(ex)
End Try
End Sub
------------------------------------------------------------------------------------------------------------------
Protected Sub BindDropDownList()
Try
Dim objSector As IEnumerable(Of SystemBuilder.SystemBuilder_Sector)
Dim objSubscriptionLevel As SystemBuilder.SystemBuilder_SubscriptionLevel
Dim DDLSectorctrl As DropDownList
objSector = CSectorDB.CSectorInstance().GetAllSector()
If (lvSubscription.InsertItemPosition = InsertItemPosition.FirstItem Or lvSubscription.InsertItemPosition = InsertItemPosition.LastItem) Then
DDLSectorctrl = CType(lvSubscription.InsertItem.FindControl("DropDnSector"), DropDownList)
If DDLSectorctrl IsNot Nothing Then
DDLSectorctrl.Items.Add(New ListItem("--Select--", "0"))
For Each ObjRec As SystemBuilder.SystemBuilder_Sector In objSector
DDLSectorctrl.Items.Add(New ListItem(ObjRec.SectorText.ToString(), ObjRec.SectorID.ToString()))
Next
End If
ElseIf (lvSubscription.EditIndex >= 0) Then
Dim DDLSectorctrl1 As DropDownList
DDLSectorctrl1 = DirectCast(lvSubscription.Items(lvSubscription.EditIndex).FindControl("DropDnSector"), DropDownList)
If DDLSectorctrl1 IsNot Nothing Then
DDLSectorctrl1.Items.Add(New ListItem("--Select--", "0"))
For Each ObjRec As SystemBuilder.SystemBuilder_Sector In objSector
DDLSectorctrl1.Items.Add(New ListItem(ObjRec.SectorText.ToString(), ObjRec.SectorID.ToString()))
Next
objSubscriptionLevel = CSubscriptionLevelsDB.CSubLvlInstance().GetSubscriptionLevelDetailsBySubscrptionID(ViewState("ID"))
If objSubscriptionLevel IsNot Nothing Then
DDLSectorctrl1.SelectedValue = objSubscriptionLevel.SubscriptionID.ToString()
End If
End If
End If
Catch ex As Exception
End Try
End Sub
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Sep 18, 2010
I thought this one would be easy, but no go. What I am trying to do is the following: I have two DropDownLists in my InsertItemTemplate, each bound to its own datasource. After the fields in this form have been filled out and the ItemInserting event fires, I rebind the ListView to its datasource, but the DropDownLists turn out empty. I tried to bind them in the ItemInserting event and it seems they get filled, but nothing shows up in them when the page loads. I also tried to fill them in the ItemDataBound event, but the e.Item.ItemType == InsertItem doesn't do it.
How can I fill those DropDownLists?
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Mar 22, 2010
I am using a Listview with InsertItemTemplate bound to a LinqDataSource with a child table in the ORM datacontext. This table has a relationship with a parent table in the OR/M datacontext. The record is to be inserted in the child Table. The parent table is bound to dropDownList in the InsertItemTemplate to provide a user friendly name. Using the ListView ItemInserted event in debug, I can follow the execution and no errors occur BUT no record is inserted. I confirm this by a showing all Table Data in the SQL Mgmnt Studio. The child to parent table seems to be causing the problem because when I delete the relationship in the OR/M .dbml , I am ABLE to insert records. I am using Scott Mitchells' Using ASP.net 3.5 ListView with Data Pager controls: Inserting Data as a model. I can provide code if required, but what is going on with the deleting of the relationship between child and Parent.
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Jun 7, 2010
I have a ListView and I'm using the option <InsertItemTemplate>. Inside this template I have two control: TextBox and Button.
I'm having tourble in C# to read the CommandArgument of my button OnCommand event:
What am I doing wrong?
protected void AddComment(object sender , CommandEventArgs e)
{
string Args = e.CommandArgument.ToString();
}
<asp:Button
ID="buttonComment"
OnCommand="AddComment"
CommandArgument='<%#
Eval("MyId")%>'
runat="server"
/>
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Mar 30, 2011
I need to bind drop down list inside InsertItemTemplate in ListView.
[Code]....
but method GetData() never calls. How can I bind DropdownList ?
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Jul 8, 2010
I am new to asp.net and am hoping this is an easy question. I have a gridview and then I have a couple of dataviews whose sqldatasources looks to the gridview' to be populated based on an ID number in the first column. If there are no rows returned to the dataviews, I generate an insertitemtemplate.
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Nov 8, 2010
want to find textbox inside InsertItemTemplate in listview there are two list view want to find textbox in the second listview that is inside listview i used that code but told me that there is error.
Dim lv As ListView =
DirectCast(Me.FindControl("lv"), ListView)Dim
lv2 As ListView =
DirectCast(lv.Items(lv.SelectedIndex).FindControl("lv2"), ListView)Dim
txt As TextBox =
CType(lv2.Items(lv2.SelectedIndex).FindControl("txtCode"), TextBox)'
If txt Is
Nothing Then
txt.Text = dr.AssetCode
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Oct 29, 2010
I have a Detailsview grid with an SqlDatasource, this DVG is only going to be used to insert records. The primary purpose of the DS is to populate a DDL control in the insertItem Template that I created my code is this:
[Code]....
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I did find a workaroun by build a public method and calling it in the onclick event of the insert button but looks like I have to create another connection to the database which to me seems unnecessary since I already have a DS and everything. how can I do this without having to use my method. here is my method just in case.
[Code]....
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Sep 13, 2010
I have a Button that creates a new product object. Then I add this button product to a list via list.add(product) and than I initialize the DataSource property of the GridView with that list via gridView.DataSource = list.
Here is the example code that will be exuted if the user clicks the add button:
[Code]....
It works. But if I press the button the second time, I overwrite the previous entry from the list / grid. How can I solve this problem? They idear is, to save all created objects in the list to save the whole list later. The grid view is necessary to show the users the added objects. All components are inside an update panel.
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Aug 15, 2011
I have two calendar controls on my page for a user to specify a start and end date. The earliest record was created on 05/27/2011 and the latest was created on 06/22/2011 so I wanted to initialize each calendar to those dates respectively (I will get these dates when I run a database query). It is working in that the calendar properties are set correctly but I want the page to display the calendar of those months instead of defaulting to August. How do I get the calendar page to flip back three months and display May?
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Sep 30, 2010
I try to datbind a listview which is inside another listview InsertItemTemplate.
[Code]....
I'm binding the listivew in the parent listview onitemcreated events. I receive the error Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
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Jun 21, 2010
I've googled around for a couple of days now and tried different solutions posted here and there, but nothing has worked so far. Therefore I'm forced to write a new thread about this subject.
I'm working on a solution containing nested listviews. The top listview lists different projects, and in each project a nested listview lists images from that specific project using a nested sqldatasource. Inside the nested listview I want the user to be able to add new images, and i'm using the InsertItemTemplate of the nested listview. When inserting a new image, the project need to be specified, as the project is a foreign key in my image database. The problem is that in my InsertItemTemplate, "Bind" and "Eval" does not work (I believe this is by design). Therefore, when adding the new image I don't have access to the project. I'm using the ItemInserting event of the nested listview to upload the image, and the optimal solution would be to have access to the project in this event and just pass it on as a parameter.
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Jun 28, 2010
I have an ASP.NET webform where I initialize an array with a list of controls on the page like this
FileUpload[4] = new FileUpload[4];
public myclass()
{
fileUpload[0] = FileUpload1;
fileUpload[0] = FileUpload2;
...etc
}
I then use these in the page load and they are all null. they are null in the constructor but why should they be null when used in the page load.
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Nov 10, 2010
I have a ObjectDataSource and a ListView referencing it.
I have created a Templated User Control (see:
http://msdn.microsoft.com/en-us/library/36574bf6.aspx) and placed it in the ListView's InsertItemTemplate
It has one template <ContentTemplate>. Inside that template, I've defined a couple of server controls with their properties = '<%# Bind("colName") #>'.
See below:
[Code]......
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Feb 9, 2011
I have a pretty simple scenario using manual data operations with rad list view. I insert an item into my collection in the Item Inserting event,the list view shows the new item but the insert item template is still showing.Is my setup wrong?Do I have to manually hide the thing?
Markup
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test2.aspx.vb" Inherits="Test2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
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Nov 8, 2010
I have tried this but it does not work:
Dim txt As TextBox = CType(lv2.Items(lv2.SelectedIndex) _
.FindControl("txtCode"), TextBox)
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May 27, 2010
I have ListView and I inside InsertItemTemplate that has two control: TextBox and Button.
If User click on the Button OnClick event is raised but I don't see how I can get the TextBox.Text property.
I have tried
TextBox
t = (TextBox)ListView1.FindControl("txtAddMessege");
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Apr 4, 2010
Wanna create a link directly from one site to the InsertItemTemplate on another site.
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May 7, 2015
This is my query
EXEC sp_configure 'show advanced options', 1
RECONFIGURE
GO
EXEC sp_configure 'ad hoc distributed queries', 1
RECONFIGURE
GO
insert into OPENROWSET( 'Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;
Database=D:TestDBFirst.xls;;HDR=YES',
'SELECT * FROM [Sheet1$]')
select * from MasterData
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OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Unspecified error".Msg 7303, Level 16, State 1, Line 1 Cannot initialize the data source object of OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)".
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Mar 9, 2011
i create a web part in the code behind page and i didn't nkjow how to
initializes
[Code]....
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Jan 10, 2010
I want to create my own naming convention for page events rather than AutoEventWireUp but I couldn't find Component Initialize methods any where ? Should I override it ? But in which class it is defined ?
Edit :
For example : I don't want to use Page_Load but LoadThisPage naming. So It should be like
Load += new LoadThisPage(sender,e);
I was expecting a InitializeComponent method where I can initialize page,controls etc. events handlers...But it turned out to be Constructor function :
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