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POTextbox binding to list won't update
 

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    <p>HI, I have a list of coursesTaken with dates (returned by a nested class). Since I am not sure howmany courses the person took, I just bind it to textboxes and is working fine. The datacontext of the grid is the list itself so I assume whenever I make changes to the form, it is automatically sent back to the list and add it, but when it is time to save it in DB, the list won't change. I tried making the list as an observable collection and bind mode two way but still won't change. when I try to put Onpropertychange it says "Cannot acces a non static member of outer type via nested type..." What I want to do is whenever I type / add something to textbox, the list will add it as it's nth item so I can iterate and save it in DB. </p> <p>is ther any other way to do this? please see code below. thanks! </p> <pre><code> #region class for binding purposes (nested class) public class ListCon { public ObservableCollection&lt;tblGALContinuingEducationHistory&gt; EducList { get { return new ObservableCollection&lt;tblGALContinuingEducationHistory&gt;(contEducHstoryList); } } } #endregion #region constructor public ContinuingEducHistoryPopUp(tblAttorneyGalFileMaint currentGal) { contEducHstoryList = new ObservableCollection&lt;tblGALContinuingEducationHistory&gt;(); InitializeComponent(); if (currentGal != null) { CurrentGal = currentGal; txtMemberName.Text = CurrentGal.FullName; contEducHstoryList = new ObservableCollection&lt;tblGALContinuingEducationHistory&gt;(currentGal.tblGALContinuingEducationHistories.Count &gt; 0 &amp;&amp; currentGal.tblGALContinuingEducationHistories != null ? currentGal.tblGALContinuingEducationHistories : null); } this.DataContext = new ListCon(); } #endregion </code></pre> <p>Now here's my xaml</p> <pre class="lang-xml prettyprint-override"><code>&lt;Grid Grid.Row="2" Grid.ColumnSpan="2" Name="grdEducForm"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="25" /&gt; &lt;RowDefinition Height="25" /&gt; &lt;RowDefinition Height="25" /&gt; &lt;RowDefinition Height="25" /&gt; &lt;RowDefinition Height="25" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="2*" /&gt; &lt;ColumnDefinition Width="*" /&gt; &lt;ColumnDefinition Width="*" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;TextBox Text="{Binding Path=EducList[0].CourseTitle}" Grid.Column="0" Grid.Row="0" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[0].CertificateDate}" Grid.Column="1" Grid.Row="0" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[0].CertificateExpiration}" Grid.Column="2" Grid.Row="0" /&gt; &lt;TextBox Text="{Binding EducList[1].CourseTitle}" Grid.Column="0" Grid.Row="1" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[1].CertificateDate}" Grid.Column="1" Grid.Row="1" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[1].CertificateExpiration}" Grid.Column="2" Grid.Row="1" /&gt; &lt;TextBox Text="{Binding Path=EducList[2].CourseTitle}" Grid.Column="0" Grid.Row="2" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[2].CertificateDate}" Grid.Column="1" Grid.Row="2" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[2].CertificateExpiration}" x:Name="dpEnd3" Grid.Column="2" Grid.Row="2" /&gt; &lt;TextBox Text="{Binding Path=EducList[3].CourseTitle, Mode=TwoWay}" Grid.Column="0" Grid.Row="3" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[3].CertificateDate, Mode=TwoWay}" Grid.Column="1" Grid.Row="3" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[3].CertificateExpiration}" Grid.Column="2" Grid.Row="3" /&gt; &lt;TextBox Text="{Binding Path=EducList[4].CourseTitle}" Name="txtEducName5" Grid.Column="0" Grid.Row="4" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[4].CertificateDate}" x:Name="dpStart5" Grid.Column="1" Grid.Row="4" /&gt; &lt;useable:MaskedDatePicker DateValue="{Binding Path=EducList[4].CertificateExpiration}" x:Name="dpEnd5" Grid.Column="2" Grid.Row="4" /&gt; &lt;/Grid&gt; </code></pre>
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    1. USuser742102
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    1. COIs there a reason that I'm missing for why your EducList property returns a nwe ObservableCollection every time it is accessed?
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    2. COhmnn I was actually converting the contEducHstoryList to observablecolelction since it is entity enumerable.
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    3. COYou convert it in your constructor (twice, actually) and then you also create it every time that property is accessed. Definitely not right.
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