Windows Communication Foundation (WCF) uses the DataContractSerializer as its default serialization engine to convert data into XML and to convert XML back into data. The DataContractSerializer is designed to serialize data contract types....

There are more than one solution. First of all, proposed solution is not correct because event is triggered with same last value from iteration. One possible solution is to create a new object for each iteration, and event is handeled for current val...

After loading document, return XMLNode using SelectSingleNode ( selects the first XmlNode that matches the XPath expression) and translate in order step over xml case sensitive property. static XmlNode GetBook(string strXMLFilePath, string strPub...

In C# , covariance and contravariance enable implicit reference conversion for array types, delegate types, and generic type arguments. Covariance preserves assignment compatibility and contravariance reverses it. Covariance and contravariance suppor...

Specify how to handle rows with no matching entries: select an option for handling rows that do not match at least one entry in the reference dataset. When you select Redirect rows to no match output, the rows are redirected to a no match output and ...

Standard SQL disallows references to column aliases in a `WHERE` clause. This restriction is imposed because `WHERE` clause has no idea about the alias, because it is processed long before the expressions in `SELECT` list. So, in most cases, you will ha...

SQL Server has a strict data-type precedence, which says that if two values of different data types meet, the one with lower precedence is converted to the higher type. **`varchar`** has lower precedence than **`nvarchar`**. Thus, in the latter two exec...