What is sequence of code in retrieving data from database ?
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Answer Posted / manoj batra
If using DataSet :
1) Create a connection object
2) Create a DataAdapter object
3) Associate your query and connection with DataAdapter
4) Create DataSet object
5) Fill the dataset with desired result using Fill method of
DataAdapter.
6) start retriving the data into your container from dataset.
Note : DataAdapter automatically Open and Close the connection.
If using DataReader:
1) Create connection object
2) Oen connection
3) Create Command object
4) Create DataReader object
5) Associate your Sql command with the command object
6) Use ExecuteDataReader method inside the loop (The
selective Sql query may return more than one Row)
Note : DataReader is Readonly and ForwardOnly operation.
7) Return result in control(s).
8) Close the connection
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