How to clear all data in a listBox

Question

I am after a statement that will clear all strings   data that is currently in a listBox  I have tried   private void cleanlistbox object sender  EventArgs e        listBox1 ResetText

User · Answer

If it is bound to a Datasource it will throw an error using ListBox1.Items.Clear();

In that case you will have to clear the Datasource instead. e.g., if it is filled with a Datatable:

  _dt.Clear();   //<-----Here's the Listbox emptied.
  _dt = _dbHelper.dtFillDataTable(_dt, strSQL);

  lbStyles.DataSource = _dt;
  lbStyles.DisplayMember = "YourDisplayMember";
  lbStyles.ValueMember = "YourValueMember";

User · Answer

If you are using CListBox as pointer     use this line  pList1- ResetContent

User · Answer

Try this    private void cleanlistbox object sender  EventArgs e           listBox1 DataSource   null       listBox1 Items Clear

User · Answer

Use this   listBox1 Items Clear

User · Answer

In C  Core DataSource does not exist  but this work fine  listbox ItemsSource   null  listbox Items Clear

User · Answer

What about  listbox1 Items Clear

User · Answer

Try     private void cleanlistbox object sender  EventArgs e       ListBox1 Items Clear

User · Answer

private void cleanlistbox object sender  EventArgs e        listBox1 Items Clear

User · Answer

This should work    listBox1 Items Clear

User · Answer

If your listbox is connected to a LIST as the data source  listbox Items Clear   will not work  I typically create a file named  quot DataAccess cs quot  containing a separate class for code that uses or changes data pertaining to my form   The following is a code snippet from the DataAccess class that clears or removes all items in the list  quot exampleItems quot  public List lt ExampleItem gt  ClearExampleItems                       List lt ExampleItem gt  exampleItems   new List lt ExampleItem gt                exampleItems Clear               return examplelistItems             ExampleItem is also in a separate class named  quot ExampleItem cs quot  using System   namespace           The namespace is automatically added by Visual Studio       public class ExampleItem               public int ItemId   get  set            public string ItemType   get  set            public int ItemNumber   get  set            public string ItemDescription   get  set             public string FullExampleItem                        get                               return   quot  ItemId   ItemType   ItemNumber   ItemDescription  quot                                    In the code for your Window Form  the following code fragments reference your listbox  using System  using System Collections Generic  using System Configuration  using System Linq  using System Windows Forms   namespace           The namespace is automatically added by Visual Studio            public partial class YourFormName   Form                        List lt ExampleItem gt  exampleItems   new List lt ExampleItem gt              public YourFormName                         InitializeComponent                    Connect listbox to LIST             UpdateExampleItemsBinding                       private void UpdateUpdateItemsBinding                         ExampleItemsListBox DataSource   exampleItems              ExampleItemsListBox DisplayMember    quot FullExampleItem quot                      private void buttonClearListBox Click object sender  EventArgs e                        DataAccess db   new DataAccess                exampleItems   db ClearExampleItems                             UpdateExampleItemsBinding                       This solution specifically addresses a Windows Form listbox with the datasource connected to a list

User · Answer

this should work   private void cleanlistbox object sender  EventArgs e        listBox1 Items Clear

[c#] How to clear all data in a listBox?

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