Web Forms :: ListView List Controls Display Wrong Data The 3rd Time?

Aug 10, 2010

I have a ListView that populates and displays a user's data (via a profile system in VWD 2008) during Page_Load and also when I go from the EditItemTemplate to the ItemTemplate. Then when I go to the edit screen again, my DropDownList and RadioButtonList controls display the first items in the corresponding tables instead of the correct profile values. I don't understand why the controls populate correctly the first and second times but not on the third time (that's right, the third time is NOT a charm).






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ListView Controls Display Wrong Data The 3rd Time?

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I have a ListView that populates and displays a user's data (via a profile system in VWD 2008) during Page_Load and also when I go from the EditItemTemplate to the ItemTemplate.

When I go to the edit screen again, my DropDownList and RadioButtonList controls display the first items in the corresponding tables instead of the correct profile values.

I don't understand why the controls populate correctly the first and second times but not on the third time (that's right, the third time is NOT a charm).


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ASPX Markup Code :


C# Behind Code :


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Shown be low are code snipets of the.

<asp:ListView ID="OuterListView1" DataKeyNames="entryid" runat="server" EnableViewState="False" EnableModelValidation="True" InsertItemPosition="LastItem" OnItemDataBound="OuterListView1_ItemDataBound" OnSelectedIndexChanging="OuterListView1_OnSelectedIndexChanging"


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[FormatException: ??????????????????]
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: String "" ??? 'Integer' ??????????]
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<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>
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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
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End Sub
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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.

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Code Behind


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The code:


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<asp:ListView ID="ListView1" runat="server">
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value2 ,

value3 ,

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