string[] lines = File.ReadAllLines(txtProxyListPath.Text);List<string> list_lines = new List<string>(lines);Parallel.ForEach(list_lines, line =>{ //Your stuff});
string[] lines = File.ReadAllLines(txtProxyListPath.Text);List<string> list_lines = new List<string>(lines);Parallel.ForEach(list_lines, line =>{ //Your stuff});