IDbDataAdapter.UpdateCommand Property

public:
 property System::Data::IDbCommand ^ UpdateCommand { System::Data::IDbCommand ^ get(); void set(System::Data::IDbCommand ^ value); };

public System.Data.IDbCommand? UpdateCommand { get; set; }

public System.Data.IDbCommand UpdateCommand { get; set; }

member this.UpdateCommand : System.Data.IDbCommand with get, set

Public Property UpdateCommand As IDbCommand

Property Value

An IDbCommand used during Update(DataSet) to update records in the data source for modified rows in the data set.

Examples

The following example creates an instance of the inherited OleDbDataAdapter class, and sets the SelectCommand and UpdateCommand properties. It assumes you have already created an OleDbConnection object.

private static OleDbDataAdapter CreateCustomerAdapter(
 OleDbConnection connection)
{
 OleDbDataAdapter dataAdapter = new OleDbDataAdapter();
 OleDbCommand command;
 OleDbParameter parameter;

 // Create the SelectCommand.
 command = new OleDbCommand("SELECT * FROM dbo.Customers " +
 "WHERE Country = ? AND City = ?", connection);

 command.Parameters.Add("Country", OleDbType.VarChar, 15);
 command.Parameters.Add("City", OleDbType.VarChar, 15);

 dataAdapter.SelectCommand = command;

 // Create the UpdateCommand.
 command = new OleDbCommand(
 "UPDATE dbo.Customers SET CustomerID = ?, CompanyName = ? " +
 "WHERE CustomerID = ?", connection);

 command.Parameters.Add(
 "CustomerID", OleDbType.Char, 5, "CustomerID");
 command.Parameters.Add(
 "CompanyName", OleDbType.VarChar, 40, "CompanyName");

 parameter = command.Parameters.Add(
 "oldCustomerID", OleDbType.Char, 5, "CustomerID");
 parameter.SourceVersion = DataRowVersion.Original;

 dataAdapter.UpdateCommand = command;

 return dataAdapter;
}

Private Function CreateCustomerAdapter( _
 ByVal connection As OleDbConnection) As OleDbDataAdapter

 Dim dataAdapter As New OleDbDataAdapter()
 Dim command As OleDbCommand
 Dim parameter As OleDbParameter

 ' Create the SelectCommand.
 command = New OleDbCommand("SELECT * FROM dbo.Customers " & _
 "WHERE Country = ? AND City = ?", connection)

 command.Parameters.Add("Country", OleDbType.VarChar, 15)
 command.Parameters.Add("City", OleDbType.VarChar, 15)

 dataAdapter.SelectCommand = command

 ' Create the UpdateCommand.
 command = New OleDbCommand("UPDATE dbo.Customers " & _
 "SET CustomerID = ?, CompanyName = ? " & _
 "WHERE CustomerID = ?", connection)

 command.Parameters.Add( _
 "CustomerID", OleDbType.Char, 5, "CustomerID")
 command.Parameters.Add( _
 "CompanyName", OleDbType.VarChar, 40, "CompanyName")

 parameter = command.Parameters.Add( _
 "oldCustomerID", OleDbType.Char, 5, "CustomerID")
 parameter.SourceVersion = DataRowVersion.Original

 dataAdapter.UpdateCommand = command

 Return dataAdapter
End Function

Remarks

During Update, if this property is not set and primary key information is present in the DataSet, the UpdateCommand can be generated automatically if you set the SelectCommand property of a .NET Framework data provider. Then, any additional commands that you do not set are generated by the CommandBuilder. This generation logic requires key column information to be present in the DataSet. For more information see Generating Commands with CommandBuilders.

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