IDbDataAdapter.InsertCommand 属性

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

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

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

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

Public Property InsertCommand As IDbCommand

属性值

在 IDbCommand 过程中使用的 Update(DataSet)，它针对数据集中的新行将记录插入到数据源。

示例

以下示例创建继承 OleDbDataAdapter 类的实例，并设置 SelectCommand 和 InsertCommand 属性。 它假定你已创建对象 OleDbConnection 。

public static OleDbDataAdapter CreateCustomerAdapter(
    OleDbConnection connection)
{
    OleDbDataAdapter adapter = new OleDbDataAdapter();
    OleDbCommand command;

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

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

    adapter.SelectCommand = command;

    // Create the InsertCommand.
    command = new OleDbCommand(
        "INSERT INTO Customers (CustomerID, CompanyName) " +
        "VALUES (?, ?)", connection);

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

    adapter.InsertCommand = command;
    return adapter;
}

Public Shared Function CreateCustomerAdapter( _
    connection As OleDbConnection) As OleDbDataAdapter 
  
    Dim adapter As New OleDbDataAdapter()
    Dim command As OleDbCommand

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

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

    adapter.SelectCommand = command

    ' Create the InsertCommand.
    command = New OleDbCommand( _
        "INSERT INTO Customers (CustomerID, CompanyName) " & _
        "VALUES (?, ?)", connection)

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

    adapter.InsertCommand = command
    Return adapter
End Function

注解

在 期间Update，如果未设置此属性并且中DataSet存在主键信息，InsertCommand则可以在 设置SelectCommand.NET Framework数据提供程序的 属性时自动生成 。 然后，未设置的任何其他命令都由 CommandBuilder 生成。 此生成逻辑要求键列信息存在于 中 DataSet。 有关详细信息，请参阅 使用 CommandBuilders 生成命令。

当 InsertCommand 分配给之前创建的 IDbCommand时， IDbCommand 不会克隆 。 维护 InsertCommand 对以前创建的 IDbCommand 对象的引用。