title: How to clear items in DevExpress LookupEdit
body: <p>Hai,
    Am using DevExpress LookupEdit in C#.NET application.I want to clear all items in the LookupEdit.Please help </p>
  
  <p>code:</p>
  
  <pre><code>lkpLabItem.Properties.DataSource = null; 
           lkpLabItem .Properties.DataSource = _lab.selectChemicals ();
           lkpLabItem.Properties.DisplayMember = "labitem_Name";
           lkpLabItem.Properties.ValueMember = "labItem_ID";
           lkpLabItem.Properties.BestFitMode = BestFitMode.BestFit;
           lkpLabItem.Properties.SearchMode = SearchMode.AutoComplete;
  
           lkpLabItem.Properties.Columns.Add(new LookUpColumnInfo("labitem_Name", 100, "Lab Items"));
           lkpLabItem.Properties.AutoSearchColumnIndex = 1;
  </code></pre>
  
  <p>Thank you.<img src="https://i.stack.imgur.com/TYOI7.png" alt="alt text"></p>