XML Document

private void UpdateConfigData()
{
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.Load(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);


//Looping through all nodes.
foreach (XmlNode node in doc.ChildNodes.Item(1))
{
//Searching for the node “”
if (node.LocalName == "dataConfiguration")
{
node.Attributes[1].Value = "db1"; // ใส่ค่าที่ต้องการแก้ไข
}
}
//Saving the Updated values in App.config File.Here updating the config
//file in the same path.
doc.Save(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);
}

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