两个ListBox中的项左右移动

实现如下图所示的功能:

代码如下所示:

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/// <summary> 
/// Move one or more items from left to right
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MoveToRight_Click(object sender, EventArgs e)
{

int ItemCount = AllTestCase.SelectedItems.Count;

if (ItemCount > 0)
{
for (int i = 0; i < ItemCount; i++)
{
SelectedTestCase.Items.Add(AllTestCase.SelectedItem);
AllTestCase.Items.Remove(AllTestCase.SelectedItem);
}
}
else
{
MessageBox.Show("Please select one or more items.");
}
}

/// <summary>
/// Move all items from left to right
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MoveAllToRight_Click(object sender, EventArgs e)
{

SelectedTestCase.Items.AddRange(AllTestCase.Items);
AllTestCase.Items.Clear();
}

/// <summary>
/// Move one or more items from right to left
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MoveToLeft_Click(object sender, EventArgs e)
{

int ItemCount = SelectedTestCase.SelectedItems.Count;

if (ItemCount > 0)
{
for (int i = 0; i < ItemCount; i++)
{
AllTestCase.Items.Add(SelectedTestCase.SelectedItem);
SelectedTestCase.Items.Remove(SelectedTestCase.SelectedItem);
}
}
else
{
MessageBox.Show("Please select one or more items.");
}

}

/// <summary>
/// Move all items from right to left
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MoveAllToLeft_Click(object sender, EventArgs e)
{

AllTestCase.Items.AddRange(SelectedTestCase.Items);
SelectedTestCase.Items.Clear();
}

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