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What is the use of ExecuteScalar,ExecuteReader and ExecuteNonQuery methods?

Description:What is the difference between ExecuteScalar,ExecuteReader and ExecuteNonQuery methods and In what conditions which one to use

Posted by: | Posted on: Jul 11, 2018

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ExecuteNonQuery()

ExecuteNonQuery method will return number of rows effected with INSERT, DELETE or UPDATE operations. This ExecuteNonQuery method will be used only for insert, update and delete, Create, and SET statements.

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ExecuteReader()

ExecuteReader will be used to return the set of rows, on execution of SQL Query or Stored procedure using command object. This one is forward only retrieval of records and it is used to read the table values from first to last.


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ExecuteScalar()

ExecuteScalar will return single row single column value i.e. single value, on execution of SQL Query or Stored procedure using command object. It’s very fast to retrieve single values from database.


see more details about Execute Scalar

Replied by: | Replied on: Jul 12, 2018



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