WPF Listview gridview validation

XAML code
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<grid height="391" width="740">
<ListView x:Name="ListCreatives" HorizontalAlignment="Left" Height="319" VerticalAlignment="Top" Width="740" >
<ListView.View>
<gridview>
<gridviewcolumn header="Start Date(DD-MM-YYYY)" displaymemberbinding="{Binding Path=StartDate}">
<gridviewcolumn header="End Date(DD-MM-YYYY)" displaymemberbinding="{Binding Path=EndDate}">

</ListView.View>
</ListView>
<Button Content="Upload" Width="70" Height="30" Click="ButtonBase_OnClick" Margin="12,336,658,25" />

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in code behind i just read csv file and bind into grid as :- ListCreatives.ItemsSource = listCreatives;