I try to datbind a listview which is inside another listview InsertItemTemplate.
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.
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?
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
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.
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
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.
I have a ListView which is filled by generic list of type MyClass. I can easily bind data from this list into ListView. But I have problems with reading data in opposite direction. This is my class:
I have also generic list of type MyClass:
Finally I bind data to ListView this way:
My ListView template:
How can I read data from ListView into my List list?
The operation of reading ListView data into List generic list should begin after clicking the button "GetData".
I saw the following advice:
but it does not work - the DataItem property of each Item of ListView has null value. The point is that I have generic list with data. I am binding this data into ListView which can be edited by user. After that after click Save or GetData data from ListView is read into generic list of MyClass type.
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:
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.
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.
The problem is that I want to pass the value from the ID column in the Gridview over to the insertitemtemplate (because I don't trust the end user to get the ID right). The insertitemtemplate is now blank in all fields. ( I'm doing this in C#).
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:
The DDL control populates correctly, but when I try to modify the INSERTCommand property in my DS, I try to assign the value to my parameters "TesterID" and "TesterDate" but the only options for controls to pick from, is the DGV but not the DDL in it. I assume it has to do with the InsertItem template but even if I reset it I still cannot pick the textbox as a control that would give the value to my parameters.
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.
Now, as you can see I've set up the commandargument, and was expecting to get to that in my code behind file. My code is as follows:
Ok...so far so good, and as long as I'm the only one working on the system it works fine. The problem is if this scenario happens:
* I go to the page and look at the gridview
* Someone else enters a new record into the database, causing the first row to contain a new record (not displayed in my browser)
* I click select.
What happens then is that, for some odd reason, I will get n numbers higher than the one I actually selected (n = num_added -num_removed).
I was under the impression that the commandargument wouldn't change for my session as long as I didn't refresh the gridview...?... There are no ajax or anything else messing with postbacks or viewstate as far as I can see..
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") #>'.