App config 操作
C# Winform 操作 App.config（新增、修改、刪除、讀取）
操作App config之前要先導入 System.Configuration 及 主檔案 using System.Configuration
app.config 新增item
private void additem(string account,string password)
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
config.AppSettings.Settings.Add(“account”, account);
config.AppSettings.Settings.Add(“password”, password);
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection(“appSettings”);
}
app.config 檢查item是否存在
private bool existkeyname(string keyname)
{
foreach (string key in ConfigurationManager.AppSettings)
{
if(key==name)
{
return true;
}
}
return false;
}
app.config 修改item
private void modifyitem(string account,string password)
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
config.AppSettings.Settings[“account”].Value = account;
config.AppSettings.Settings[“password”].Value = password;
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection(“appSettings”);
}
app.config 刪除item
private void delete(string[] keyname)
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
foreach(string key in keyname)
{
config.AppSettings.Settings.Remove(key);
}
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection(“appSettings”);
}
app.config 取item值
private string[] getitemvalue(string[] keyname)
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
string[] info=new string[keyname.Length];
for (int i = 0; i < keyname.Length;i++ )
{
info[i] = config.AppSettings.Settings[keyname[i]].Value;
}
return info;
}