//将字符串按规定变成数组,返回数组中不相等的数
private string Get_str(string str)
{
string[] aa = new string[1000];
aa = str.Split(new Char[] { ',' });
for (int j = 0; j < aa.Length - 1; j++)
{
for (int i = j; i < aa.Length - 1; i++)
{
if (aa[j] == aa[i + 1])
{
aa[i + 1] = "";
}
}
}
string strSUM = "";
for (int i = 0; i < aa.Length; i++)
{
if (aa[i] != "")
{
if (i + 1 == aa.Length)
{
strSUM += aa[i].ToString();
}
else
{
strSUM += aa[i].ToString() + ",";
}
}
}
return strSUM;
}