.Net and Xamarin Developer

Sql joins are used to fetch/retrieve data from two or more data tables, based on a join condition. A join condition is a relationship among some columns in the data tables that take part in Sql join. Basically data tables are related to each other with keys. We use these keys relationship in sql joins. Inner Join Outer Join Cross Join Cross Join

System.Xml; private void SetConfigSettings() { string path = Server.MapPath("Web.config"); string newConnectionString = @"Server=local;Database="+txtDatabaseName.Text+";Trusted_Connection=true"; XmlDocument xDoc = new XmlDocument(); xDoc.Load(path); XmlNodeList nodeList = xDoc.GetElementsByTagName("appSettings"); XmlNodeList nodeAppSettings = nodeList[0].ChildNodes; XmlAttributeCollection xmlAttCollection = nodeAppSettings[0].Attributes; xmlAttCollection[0].InnerXml = txtKey.Text; // for key attribute xmlAttCollection[1].InnerXml = newConnectionString; // for value attribute xDoc.Save(path); // saves the web.config file }