Following are useful extension methods on the IEasyUAClient Interface:

• The ReadDataType Method reads a value of DataType attribute of a node.
• The ReadMultipleDataTypes Method reads value of DataType attribute of multiple nodes, using array of argument objects as an input.
• The NodeExists Method determines whether a node exists in an OPC-UA server.
• The ReadOne Method reads an OPC-UA attribute from a single node, returning attribute data result.
• The ReadOneValue Method and its generic overloads read the value of an attribute from a single OPC-UA node, returning value result. In the generic overloads, the method also converts the value to the specified type.
• The ReadOneValueNonNull Method reads the value of an attribute from a single OPC-UA node, returning value result, converts the value to the specified type and ensures it is not null.
• The ReadOptionalValue Method reads the value of an attribute, returning value result, converting the value to the specified type and returning null if the node does not exist.
• The ReadValue Method reads the value of an attribute and converts it to the specified type.
• The ReadValueNonNull Method reads the value of an attribute and converts it to the specified type, ensuring it is not null.