SelectCommand Property

MySQL Connector/Net

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Gets or sets a SQL statement or stored procedure used to select records in the data source.

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

Syntax

C#
public MySqlCommand SelectCommand { get; set; }

Visual Basic (Declaration)
Public Property SelectCommand As MySqlCommand

Visual C++
public: property MySqlCommand^ SelectCommand { MySqlCommand^ get (); void set (MySqlCommand^ value); }

Field Value

A MySqlCommand used during Fill(DataSet) to select records from the database for placement in the DataSet.

Remarks

When SelectCommand is assigned to a previously created MySqlCommand, the MySqlCommand is not cloned. The SelectCommand maintains a reference to the previously created MySqlCommand object.

If the SelectCommand does not return any rows, no tables are added to the DataSet, and no exception is raised.

Examples

The following example creates a MySqlDataAdapter and sets the SelectCommand and InsertCommand properties. It assumes you have already created a MySqlConnection object.

CopyVB.NET

Public Shared Function CreateCustomerAdapter(conn As MySqlConnection) As MySqlDataAdapter

Dim da As MySqlDataAdapter = New MySqlDataAdapter()
Dim cmd As MySqlCommand
Dim parm As MySqlParameter

' Create the SelectCommand.
cmd = New MySqlCommand("SELECT * FROM mytable WHERE id=@id AND name=@name", conn)

cmd.Parameters.Add("@id", MySqlDbType.VarChar, 15)
cmd.Parameters.Add("@name", MySqlDbType.VarChar, 15)

da.SelectCommand = cmd

' Create the InsertCommand.
cmd = New MySqlCommand("INSERT INTO mytable (id,name) VALUES (@id, @name)", conn)

cmd.Parameters.Add( "@id", MySqlDbType.VarChar, 15, "id" )
cmd.Parameters.Add( "@name", MySqlDbType.VarChar, 15, "name" )
da.InsertCommand = cmd

Return da
End Function

CopyC#

public static MySqlDataAdapter CreateCustomerAdapter(MySqlConnection conn)
{
MySqlDataAdapter da = new MySqlDataAdapter();
MySqlCommand cmd;
MySqlParameter parm;

// Create the SelectCommand.
cmd = new MySqlCommand("SELECT * FROM mytable WHERE id=@id AND name=@name", conn);

cmd.Parameters.Add("@id", MySqlDbType.VarChar, 15);
cmd.Parameters.Add("@name", MySqlDbType.VarChar, 15);

da.SelectCommand = cmd;

// Create the InsertCommand.
cmd = new MySqlCommand("INSERT INTO mytable (id,name) VALUES (@id,@name)", conn);
cmd.Parameters.Add("@id", MySqlDbType.VarChar, 15, "id" );
cmd.Parameters.Add("@name", MySqlDbType.VarChar, 15, "name" );

da.InsertCommand = cmd;

return da;
}