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How to Remove Items from Telerik RadComboBox

To achieve this,Please follow below steps:
Make a List that you want to Remove from RadComboBox or DropDownList.
 
Here  {"2","3","5","6","7","8","9","10" } are the values of RadComboBox or DropDownList Items.
  1. List<string> list = new List<string>() {"2","3","5","6","7","8","9","10" };    
Then use foreach loop to achieve your goal.RadComboBox1
  1. foreach (var item in list)    
  2. {    
  3.   RadComboBoxItem items = .Items.FindItemByValue(item);    
  4.   if (item != null)    
  5.   {    
  6.     items.Remove();    
  7.   }    
  8. }   
Here is the Full Code:  
  1. List<string> list = new List<string>() {"2","3","5","6","7","8","9","10" };    
  2. foreach (var item in list)    
  3. {    
  4.      RadComboBoxItem items = RadComboBox1.Items.FindItemByValue(item);    
  5.       if (item != null)    
  6.       {    
  7.           items.Remove();    
  8.       }    
  9.  }