Properties文件config

Properties.Settings myStr = Properties.Settings.Default;
string adrstr = myStr.configSetting.ToString();
this.textBox1.Text += adrstr;
adrstr = myStr.userSetting.ToString();
this.textBox1.Text += adrstr;
adrstr = myStr.pwdSetting.ToString();
this.textBox1.Text += adrstr;

myStr.configSetting = "configSetting";
myStr.userSetting = "userSetting";
myStr.pwdSetting = "pwdSetting";
myStr.Save();