获取Excel中的自定义序列

private void button1_Click(object sender, EventArgs e)
{
for (int i = 1; i <= Application.CustomListCount; i++)
{
object obj = Application.GetCustomListContents(i);
Array arr = obj as Array;
MessageBox.Show(GetString(arr));
}
}
static string GetString(Array arrlist)
{
StringBuilder sb = new StringBuilder();
foreach (string s in arrlist)
{
sb.Append(s);
sb.Append("/r");
}
return sb.ToString();
}