Forms Data Controls :: List Box Nested In Listview Control Selection
Jul 5, 2010
I have a list box in a list view control. I want to access the value of the listbox. I have fixed the height of the list box and the box has scroll bars. If i change the number using the scrollbar and then click on the number (turning it blue) everthing works fine. If I simply change the number using the scrollbar the system throws the error below. Can anyone tell me how to get this to work simply by using the scrollbar to select the number (without having to also click on the number itself) This is the error that is thrown
[FormatException: ??????????????????]
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)
+201
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: String "" ??? 'Integer' ??????????]
This is the aspx listbox
<td><asp:label id="Label1" runat="server" text='<%# eval("CustomerID") %>'></asp:label></td>
<td><asp:label id="label2" runat="server" text='<%# eval("ProductID") %>'></asp:label></td>
<td>
<asp:ListBox ID="ListBox1" runat="server" Height="30px">
<asp:ListItem Value="0">0</asp:ListItem>
<asp:ListItem Value="1">1</asp:ListItem>
<asp:ListItem Value="2">2</asp:ListItem>
<asp:ListItem Value="3">3</asp:ListItem>
</asp:ListBox>
</td>
<td>$<asp:label id="label4" runat="server" text='<%# eval("OrderDate") %>'></asp:label></td>
<td>
<asp:Button ID="Button1" runat="server" Text="order" CommandName="cart"
CommandArgument='<%# eval("CustomerID")%>'/></td>
This is the vb page
Partial Class Droplist
Inherits System.Web.UI.Page
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Dim db As New DataClassesDataContext
ListView1.DataSource = db.Droplist1
ListView1.DataBind()
End If
End Sub
Sub upload(ByVal sender As Object, ByVal e As ListViewCommandEventArgs)
If e.CommandName = "cart" Then
Dim q As ListBox = e.Item.FindControl("Listbox1")
Dim ProductNumber As Integer = CType(q.SelectedValue, Integer)
Label3.Text = ProductNumber
End If
End Sub
End Class
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Shown be low are code snipets of the.
Markup:
<asp:ListView ID="OuterListView1" DataKeyNames="entryid" runat="server" EnableViewState="False" EnableModelValidation="True" InsertItemPosition="LastItem" OnItemDataBound="OuterListView1_ItemDataBound" OnSelectedIndexChanging="OuterListView1_OnSelectedIndexChanging"
>
[Code]....
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Mar 28, 2011
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May 24, 2010
I have a listbox in a list view control. I want to acces the values.
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//this is aspx code.
<asp:ListView ID="ListView1" runat="server" >
<Layouttemplate>
<placeholder runat="server" id="itemplaceholder">
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[Code].....
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Aug 26, 2010
I am having trouble finding how to solve the following issue :
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ASPX Markup Code :
[Code]....
C# Behind Code :
[Code]....
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Aug 17, 2010
Ok, background first:
The form allows a user to create and edit one estimate.
Each estimate can contain multiple Jobs, which are represented in a ListView.
Each Job can contain multiple Parts, which are contained in a ListView that sits in each item of the Jobs ListView.
A user can add and remove as many Jobs as they want.
A user can add and remove as many Parts to/from each Job as they want.
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For a reference, here is one Job in the Jobs ListView on the form:
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Here's what I have in the codebehind:
[Code]....
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[code]....
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[code]...
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Here is my code.
[Code]....
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[Code]....
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[Code]....
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[Code]....
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runat="server"
DataSourceID="sdsParent"
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cellspacing="0">
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<%
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runat="server"
/>
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cellspacing="0">
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ID="pager"
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PageSize="8">
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<asp:TemplatePagerField
OnPagerCommand="PagerCommand">
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<td
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runat="server"
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runat="server"
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ID="btnNext"
runat="server"
CommandName="Next"
ImageUrl="images/next.gif"
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ToolTip="Next Page"
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ID="btnLast"
runat="server"
CommandName="Last"
ImageUrl="images/last.gif"
AlternateText="Last Page"
ToolTip="Last Page"
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class="info">
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Math.Ceiling(((double)(Container.StartRowIndex + Container.MaximumRows)
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of
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</asp:DataPager>
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</table>
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<%
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runat="server"
/>
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id="row"
runat="server"
class="group">
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class="first">
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src="images/plus.png"
alt='Group:
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onclick="toggleGroup(this, '<%# Eval("RetailerId") %>');"
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colspan="1">
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# Eval("RetailerId")%>
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# Eval("RetailerName")%></th>
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<%
# Eval("BankruptcyTypeID")%>Chaper 11</th>
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<%
# Eval("DistrictID")%>District</th>
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ID="lvItems"
runat="server"
DataSourceID="sdsChild">
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<tr
runat="server"
id="itemPlaceholder"
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class="item">
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<th>Comments</th>
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Information</th>
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id="row"
runat="server"
class="item">
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class="first"></td>
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Eval("ActionID")%></td>
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Eval("CaseNo")%></td>
<td><%#
Eval("Comments")%></td>
<td><%#
Eval("AssigneId") %></td>
<td><%#
Eval("Date",
"{0:MM/dd/yyyy}")%></td>
<td><%#
Eval("CaseNo") %></td>
</tr>
</ItemTemplate>
</asp:ListView>
</SelectedItemTemplate>
</asp:ListView>
<asp:SqlDataSource
ID="sdsParent"
runat="server"
ConnectionString="<%$ ConnectionStrings:Legal %>"
SelectCommand="SELECT * FROM [tblBankruptcy ]">
</asp:SqlDataSource>
<asp:SqlDataSource
ID="sdsChild"
runat="server"
ConnectionString="<%$ ConnectionStrings:Legal %>"
SelectCommand="select * from tblbankruptcyaction where CaseNo = @CaseNo">
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<asp:ControlParameter
ControlID="hf1"
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Aug 8, 2010
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[Code]....
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Jan 13, 2011
I have a nested listview that I want to select the DataItem with a LinkButton or firing the ListViewSelectEventArgs, but I can't. I try the LinkButton with the sender object but a get null for the LinkButton when the OnClick event is fire and also try the ListViewSelectEventArgs to get the DataItem and again a get null for the object.
[Code]....
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May 27, 2010
I'm trying the following code to access the value of a ListBox nested in a ListView.
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Mar 16, 2011
have a nested listviews:
Listview1-Item1
<if Listview1.selected index = 0>
Item1NestedListView - item1
Item1NestedListView - item2
When a user selects an item in the parent listview, the nested listiview displays as part of the selected item template - when a user selects an item in a nested listview it correctly populates a third, separate listview. To make sure I'm being clear, I have a parent listview with many rows and each of those rows has a nested listview, that is only populated and displayed when the row is selected. The parameters for the nested listview are set in the ItemDatabound event of the parent.
I had this working fine when both objectdatasources were on the aspx page. However, requirements have changed and we would like to pass a class to the BLL. I cannot figure out how to do this using a datasource on the aspx page. I can pass a class doing a databind in the code behind. However, if I do the databind in the code behind, the SelectedItem template does not get displayed as I would like. I need to find the the selectedIndex for the parent listview in SelectedIndexChanging. however, when I click or 'select' an item in the parent listview, the page refreshes, the ItemDatabound of the parent of the parent fires NOT knowing the selectedindex, then the SelectedIndexChanging event fires changing the SelectedIndex. By this time the Listview is already on the screen without the selectedItemTemplate containing the nested listview. If I click on another item, the when the page refreshes it knows the selectedItemIndex chosen before and displays that SelectedItemTemplate containing the selected index.
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Nov 5, 2010
what i want to apply paging on each list view "lvProducts" with in repeater "rptBrands";
in other words ;
i have several Brands and each one of them contains some products;
so i want to apply paging on each products group within their brand
so if you check the code below you find that it apply paging in good manner;
the problem is that if i select page 2 on the second brand group it will display page 2 for brand 2 and all brands group which is not needed ;
so how can i apply paging??
<div id="HomeContainer">
<asp:Repeater runat="server" ID="rptBrands" >
<ItemTemplate>
<asp:HiddenField ID="hfBrandId" runat="server" Value='<%#Eval("BrandId") %>' />
<div>
[Code]....
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Apr 23, 2010
I want to change the background color of a row when the user selects an item in the ListView. Also, when something is already selected previously, the previously select row reverts back to the default background color. how I can acheive this?
[Code]....
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Mar 8, 2011
I am trying to export a Nested Listview to Excel, but I am having issues with the code recognizing the records in the ListView. When I do a FindControl, that code works fine.The Issue arises when I try to loop through the Items of the Nested Listview. The Count always comes back as 0 (zero). However, if I do a watch on the nested listview variable and navigate to the Items collection, then the count is updated with the correct content. I've tried forcing a Databind() on the 2nd Listview, but that really shouldn't be necessary as I know the records are there. As a result, I am having issues Exporting the Data to Excel since only data from the Parent ListView is returned.
[Code]....
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Sep 16, 2010
I am having a problem with finding the innermost ListView of a triple nested ListView. The middle ListView has a LinkButton whose event is handled by the outermost's ItemCommand. In the ItemCommand I want to find the third, innermost ListView and set its datasource. How can I find it?
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Jan 26, 2011
in the nested ListView (or the child ListView), the edit command does not work.
It seems that the <EditItemTemplate> is not properly excecuted by the edit button in the <ItemTemplate>.
Interestingly, the edit command in the parent ListView works well.
The insert and delete commands in the nested ListView also run without any problem.
But I get no change by pushing the edit button which is located for each reply (the item of the nested listview)
Here is my code.
[code]...
View 6 Replies
Jan 13, 2011
I am using a nested listview to display a seperate grid for each group of data returned from my db query. To get this working, I have adapted a piece of code to group the data prior to it being bound:
[Code]....
I am then using the following html markup:
[Code]....
[Code]....
This works as I want it to however some of the fields within the nested table need to be formatted as currency so I am trying to use Eval and {0:c} to do this however the moment I use Eval, the data items cannot be found
DataBinding: 'System.Data.DataRow' does not contain a property with the name '0'.
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Apr 17, 2010
its from this morning that i'm trying to get data from a selection on the listview
the code i use is here :
[Code]....
at the click of the button in the itemtemplate i call the function and i get and error like this:
Index out of range. Required non-negative value and smaller than the size of the collection.
Parameter name: index
Description: An unhandled exception occurred during the execution of the current web request.
For more information about the error and where it originated in the code, see the stack trace.
Exception Details: System.ArgumentOutOfRangeException: Index out of range.
Required non-negative value and smaller than the size of the collection.
Parameter name: index
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