private string GetImg(string str)
{
string res = "";
string tem = "";
int startIndex = 0;
int endIndex = 0;
for (int i = 0; i < str.Length - 3; i++)
{
tem = str.Substring(i, 3).ToLower();
if (tem == "src")
{
startIndex = i;
str = str.Substring(startIndex+5);
endIndex = str.IndexOf('>');
res = str.Substring(0, endIndex-3);
str = str.Substring(endIndex);
res += "|"+GetImg(str); //递归调用
break;
}
}
return res;
}
protected void dgrdName_ItemCommand(object source, DataGridCommandEventArgs e)
{
if (e.CommandName == "Delete")
{
int id = Convert.ToInt32(e.CommandArgument.ToString());
string str = "select [content] from news where id="+id+"";
string content = DB.ReadOut2(str);
string img=GetImg(content);
img = img.Substring(0,img.Length-1);
string [] arr=img.Split('|');
for (int i = 0; i < arr.Length;i++ )
{
File.Delete(HttpContext.Current.Server.MapPath("/" + arr[i]));
}
string delstr = "delete from news where id=" + id + "";
DB.myCommand(delstr);
DataBind();
}
} |