c# 修改本地配置文件不删注释的方法

public static void SaveAppSettingsMethod2(string key, string value)

{

//验证key value

//To Do

 

XmlDocument xml = new XmlDocument();

　　　　　　string configPath = Application.ExecutablePath + ".config";

xml.Load(configPath);

 

XmlNodeList nodeList = xml.GetElementsByTagName("appSettings");

 

if (nodeList != null)

{

if (nodeList.Count >= 1)

{

XmlNode node = nodeList[0];

foreach (XmlNode item in node)

{

if (item.NodeType == XmlNodeType.Comment)

{

continue;

}

 

XmlAttribute xaKey = item.Attributes["key"];

XmlAttribute xaValue = item.Attributes["value"];

if (xaKey != null && xaValue != null && xaKey.Value.Equals(key))

{

xaValue.Value = value;

}

}

}

}

xml.Save(configPath);

}

private static void SaveConnectionStringsMethod(string oldcon, string newcon)

{

XmlDocument xml = new XmlDocument();

string configPath = Application.ExecutablePath + ".config";

xml.Load(configPath);

xml.InnerXml = xml.InnerXml.Replace(oldcon, newcon);

xml.Save(configPath);

}