C# 選擇器 checkedListBox 移動勾選

    private void buttonSendChoickedToNosend_Click(object sender, EventArgs e)
    {
    int end = this.checkedListBoxSend.Items.Count;
    for (int i = 0; i < end ; i++)
    {
    if (checkedListBoxSend.GetItemChecked(i))
    {
    this.checkedListBoxSiftEmail.Items.Add(checkedListBoxSend.GetItemText(checkedListBoxSend.Items[i]));
    }
    }
    for (int j = 0; j < this.checkedListBoxSend.CheckedIndices.Count;)
    {
    this.checkedListBoxSend.Items.RemoveAt(this.checkedListBoxSend.CheckedIndices[0]);//刪除
    }
    }