MySqlDataAdapter Constructor (String, String)

MySQL Connector/Net

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C# Visual Basic
Visual C++

MySQL Connector/Net

MySqlDataAdapter Constructor (String, String)

MySqlDataAdapter Class Example See Also Send Feedback

Initializes a new instance of the MySqlDataAdapter class with a SelectCommand and a connection string.

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

Syntax

C#
public MySqlDataAdapter( string selectCommandText, string selectConnString )

Visual Basic (Declaration)
Public Sub New ( _ selectCommandText As String, _ selectConnString As String _ )

Visual C++
public: MySqlDataAdapter( String^ selectCommandText, String^ selectConnString )

Parameters

selectCommandText: Type: System..::.String
A String that is a SQL SELECT statement or stored procedure to be used by the SelectCommand property of the MySqlDataAdapter.

selectConnString: Type: System..::.String
The connection string

Remarks

When an instance of MySqlDataAdapter is created, the following read/write properties are set to the following initial values.

Properties	Initial Value
MissingMappingAction	MissingMappingAction.Passthrough
MissingSchemaAction	MissingSchemaAction.Add

You can change the value of any of these properties through a separate call to the property.

Examples

The following example creates a MySqlDataAdapter and sets some of its properties.

CopyVB.NET

Public Sub CreateSqlDataAdapter()
Dim da As MySqlDataAdapter = New MySqlDataAdapter("SELECT id, name FROM mytable", "Data Source=localhost;database=test")
Dim conn As MySqlConnection = da.SelectCommand.Connection
da.MissingSchemaAction = MissingSchemaAction.AddWithKey

da.InsertCommand = New MySqlCommand("INSERT INTO mytable (id, name) " & _
"VALUES (@id, @name)", conn)
da.UpdateCommand = New MySqlCommand("UPDATE mytable SET id=@id, name=@name " & _
"WHERE id=@oldId", conn)
da.DeleteCommand = New MySqlCommand("DELETE FROM mytable WHERE id=@id", conn)

da.InsertCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id")
da.InsertCommand.Parameters.Add("@name", MySqlDbType.VarChar, 40, "name")

da.UpdateCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id")
da.UpdateCommand.Parameters.Add("@name", MySqlDbType.VarChar, 40, "name")
da.UpdateCommand.Parameters.Add("@oldId", MySqlDbType.VarChar, 5, "id").SourceVersion = DataRowVersion.Original

da.DeleteCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id").SourceVersion = DataRowVersion.Original
End Sub

CopyC#

public static void CreateSqlDataAdapter()
{
MySqlDataAdapter da = new MySqlDataAdapter("SELECT id, name FROM mytable", "Data Source=localhost;database=test");
MySqlConnection conn = da.SelectCommand.Connection;
da.MissingSchemaAction = MissingSchemaAction.AddWithKey;

da.InsertCommand = new MySqlCommand("INSERT INTO mytable (id, name) " +
"VALUES (@id, @name)", conn);
da.UpdateCommand = new MySqlCommand("UPDATE mytable SET id=@id, name=@name " +
"WHERE id=@oldId", conn);
da.DeleteCommand = new MySqlCommand("DELETE FROM mytable WHERE id=@id", conn);

da.InsertCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id");
da.InsertCommand.Parameters.Add("@name", MySqlDbType.VarChar, 40, "name");

da.UpdateCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id");
da.UpdateCommand.Parameters.Add("@name", MySqlDbType.VarChar, 40, "name");
da.UpdateCommand.Parameters.Add("@oldId", MySqlDbType.VarChar, 5, "id").SourceVersion = DataRowVersion.Original;

da.DeleteCommand.Parameters.Add("@id", MySqlDbType.VarChar, 5, "id").SourceVersion = DataRowVersion.Original;
}