ListItems.ItemSource is clearly data before I click on button? How to do that?

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I want ListItems.ItemSource is clearly(delete old data) data before I click on button.

C#

private void btnSearching_Click(object sender, RoutedEventArgs e)  
      {ListItems.ItemSource=ResultofSearching(results[0],txtSearching.Text)};

E.g
On the first time it was clicked button then listitems will return that results
On the second time it was clicked button then listitems will be delete data on the first time and return newest data.
actually, I can clicked on button to on the third times. On the fourth times ,fifth...,listitems will not return anything, nothing...
I dont explain about that? Sorry.

Posted 4-May-15 17:49pm

jeff ninney

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[no name] 5-May-15 1:30am

Jeff what exactly your problem is ? Do want to populate the list for the first time and then clear and fill it with the new data everytime the button is clicked ?

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Real_Criffer · Answer 1 · 2015-05-04T21:53:00

Solution 1

clear the list every time you click the button
try
listitem.clear();
before you did the rest of the function. it will clear the list to empty everytime you click the button

sorry if this is not really what you want. if it isn't can you explain more?

Posted 4-May-15 21:53pm

Real_Criffer