ExecuteReader Method

MySQL Connector/Net

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C# Visual Basic
Visual C++

MySQL Connector/Net

MySqlCommand..::.ExecuteReader Method

MySqlCommand Class Example See Also Send Feedback

Sends the CommandText to the Connection and builds a MySqlDataReader.

Namespace: MySql.Data.MySqlClient
Assembly: MySql.Data (in MySql.Data.dll) Version: 6.2.2.0

Syntax

C#
public MySqlDataReader ExecuteReader()

Visual Basic (Declaration)
Public Function ExecuteReader As MySqlDataReader

Visual C++
public: MySqlDataReader^ ExecuteReader()

Return Value

A MySqlDataReader object.

Remarks

When the CommandType property is set to StoredProcedure, the CommandText property should be set to the name of the stored procedure. The command executes this stored procedure when you call ExecuteReader.

While the MySqlDataReader is in use, the associated MySqlConnection is busy serving the MySqlDataReader. While in this state, no other operations can be performed on the MySqlConnection other than closing it. This is the case until the Close()()() method of the MySqlDataReader is called.

Examples

The following example creates a MySqlCommand, then executes it by passing a string that is a SQL SELECT statement, and a string to use to connect to the data source.

CopyVB.NET

Public Sub CreateMySqlDataReader(mySelectQuery As String, myConnection As MySqlConnection)
Dim myCommand As New MySqlCommand(mySelectQuery, myConnection)
myConnection.Open()
Dim myReader As MySqlDataReader
myReader = myCommand.ExecuteReader()
Try
While myReader.Read()
Console.WriteLine(myReader.GetString(0))
End While
Finally
myReader.Close
myConnection.Close
End Try
End Sub

CopyC#

public void CreateMySqlDataReader(string mySelectQuery, MySqlConnection myConnection)
{
MySqlCommand myCommand = new MySqlCommand(mySelectQuery, myConnection);
myConnection.Open();
MMySqlDataReader myReader;
myReader = myCommand.ExecuteReader();
try
{
while(myReader.Read())
{
Console.WriteLine(myReader.GetString(0));
}
}
finally
{
myReader.Close();
myConnection.Close();
}
}