a) Data Set
Web service support Data Set and not support data reader
You can have template column for select and delete instead of the databound column. In which you can mention the destination page where you need to navigate.
Using RowDataBound event, you can add attribute to the select and delete hyperlink like:
Required Field Validator
Requried Filed Validator,Compare filed validator
1. Session Object
2. Application Object
3. Server Object
4. Request Object
5. Response Object
6. Object Context
7. Error Object
ColumnMapping belongs to which namespaces
Server.Transfer is used when redirecting the webpage with in the same applicationwhereasResponse.Redirect is applicabletowards the redirection of webpage between 2 applications
Response.Redirect will instruct browser to call a particular webpage.This will increase one request and one response between the client and server.
The pre-processing directives provide the ability to conditionally skip sections of source files, to report error and warning conditions, and to delineate distinct regions of source code. The term "pre-processing directives" is used only for consistency with the C and C++ programming languages. In C#, there is no separate pre-processing step; pre-processing directives are processed as part of the lexical analysis phase.
A preprocessor directive must be the only instruction on a line. Preprocessing directives are lines in your program that start with `#'. Whitespace is allowed before and after the `#'. The `#' is followed by an identifier that is the directive name. For example, `#define' is the directive
#if, #else, #elif, #endif, #define, #undef, #warning, #error, #line, #region, #endregion
They are used for:
Error and Warning reporting
For example u can refere the MS site ...
XSD stands for XML Schema Definition.It define the structure of the XML file and the elements and attributes it contains.The datatype of the elements.So that when u populate XML data into dataset, the dataset can treat elements differently based on their type.If XSD is not present dataset treats all elements as string type. XSLT stands for XML style sheet lang tranformation.It is lang used for transforming XML data in one format to another format.Example XML data into HTML format. XSLT uses XPath to identify the elements in XML doc and transform those to desired format
Main use of directives
If we remove the web.config file from the application it will work.
unless it doesnt have the things like connectionstring etc.