ListPicker windows phone 7 giving error - windows-phone-7

Question

I have list picker in my windows phone 7 app & it works fine but whenever i try to add more options in it... it crashes i can add upto 4 or 5 options only in this list picker is there anything i can do aboout it
My working code is
xaml code
<toolkit:ListPicker x:Name="ListPicker" Margin="12,3,12,12" Foreground="#FF00C000" >
<toolkit:ListPicker.Items>
<toolkit:ListPickerItem Content="Item1"/>
<toolkit:ListPickerItem Content="Item2"/>
</toolkit:ListPicker.Items>
</toolkit:ListPicker>
& .cs code
string ListPickerOperator = (this.ListPicker.SelectedItem as ListPickerItem).Content as string;
switch (ListPickerOperator )
{
case "Item1":
break;
case "Item2":
break;
}
but whenever i try to make this list bigger it crashes after 4 5 items

Answer 1

I think you should use item template. You couldn't show more than 4 or 5 items because you have to use "Full Mode template".
to use item template you should do something like this.
<toolkit:ListPicker x:Name="ListPicker" Margin="12,3,12,12" Foreground="#FF00C000" SelectionChanged="ListPicker_SelectionChanged" >
<!--Normal Item template-->
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<!--Full Mode template-->
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
To populate the listpicker you only have to use itemSource propetary
//list string
List<String> itemsList = new List<String>();
// create 100 items
for (int j = 0; j < 100; j++)
{
itemsList.Add("item" + j);
}
//itemsource
this.ListPicker.ItemsSource = itemsList;
to get the selectedItem you could do something like this
String ListPickerOperator= ((String)this.ListPicker.SelectedItem);
switch (ListPickerOperator)
{
case "item1":
MessageBox.Show("item 1 was selected");
break;
case "item2":
MessageBox.Show("item 2 was selected");
break;
/*
.
* .
* .
* .
* .
*/
}