ListBox Operations

Duplicate Data Check
This Code Snippet Is used to Check if Left ListBox has duplicate Data of Right List Box or not
protected void CheckDuplicateItemsFromBox(ListBox lsbRight, ListBox lsbLeft)
{
for (int countRight = 0; countRight < lsbRight.Items.Count; countRight++)
{
for (int countLeft = 0; countLeft < lsbLeft.Items.Count; countLeft++)
{
if (lsbRight.Items[countRight].Text == lsbLeft.Items[countLeft].Text)
{
lsbLeft.Items.RemoveAt(countLeft);
}
}

}
}




Move Left ListBox to Right

protected void MoveLeftListBoxToRightListBox(ListBox leftListBox, ListBox rightListBox)
{
while (leftListBox.Items.Count > 0 && leftListBox.SelectedItem != null)
{
ListItem selectedItem = leftListBox.SelectedItem;
selectedItem.Selected = false;
rightListBox.Items.Add(selectedItem);
leftListBox.Items.Remove(selectedItem);
}

}


Move Right ListBox to Left


protected void MoveRightListBoxToLeftListBox(ListBox leftListBox, ListBox rightListBox)
{
while (rightListBox.Items.Count > 0 && rightListBox.SelectedItem != null)
{
ListItem selectedItem = rightListBox.SelectedItem;
selectedItem.Selected = false;
leftListBox.Items.Add(selectedItem);
rightListBox.Items.Remove(selectedItem);
}
}