SqlCeResultSet.Insert 方法 (SqlCeUpdatableRecord)

项目
08/17/2007

在基础行集合中插入指定的 SqlCeUpdatableRecord。

命名空间: System.Data.SqlServerCe
程序集: System.Data.SqlServerCe（在 system.data.sqlserverce.dll 中）

语法

声明
Public Sub Insert ( _
    record As SqlCeUpdatableRecord _
)
用法
Dim instance As SqlCeResultSet
Dim record As SqlCeUpdatableRecord

instance.Insert(record)

public void Insert (
    SqlCeUpdatableRecord record
)

public:
void Insert (
    SqlCeUpdatableRecord^ record
)

public void Insert (
    SqlCeUpdatableRecord record
)

public function Insert (
    record : SqlCeUpdatableRecord
)

不适用。

参数

record
要插入的记录。

备注

插入记录不会更改 SqlCeResultSet 的当前位置。

调用此函数将立即执行插入，不需要其他调用即可完成此操作。

如果指定的记录包含的列比定义的基础行集合多，则会引发异常。如果指定的值少，则剩余的列必须允许空值或已定义默认值。

如果对一个不可更新的 SqlCeResultSet 调用此函数，或者读取器没有定位在有效的记录上，则会引发一个 InvalidOperationException。

示例

Dim conn As SqlCeConnection = Nothing

Try
    File.Delete("Test.sdf")

    Dim engine As New SqlCeEngine("Data Source = Test.sdf")
    engine.CreateDatabase()

    conn = New SqlCeConnection("Data Source = Test.sdf")
    conn.Open()

    Dim cmd As SqlCeCommand = conn.CreateCommand()
    cmd.CommandText = "CREATE TABLE myTable (col1 INT)"
    cmd.ExecuteNonQuery()

    cmd.CommandText = "SELECT * FROM myTable"

    Dim rs As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable Or ResultSetOptions.Scrollable)

    Dim rec As SqlCeUpdatableRecord = rs.CreateRecord()

    ' Insert 10 records
    '
    Dim i As Integer
    For i = 0 To 9
        rec.SetInt32(0, i)
        rs.Insert(rec)
    Next i

    ' Update the 5th record
    '
    If True = rs.ReadAbsolute(5) Then
        rs.SetInt32(0, 55)
        rs.Update()
    End If

    ' Delete the 2nd record
    '
    If True = rs.ReadAbsolute(2) Then
        rs.Delete()
    End If
Catch e As Exception
    MessageBox.Show(e.Message)
Finally
    conn.Close()
End Try

SqlCeConnection conn = null;

try
{
    File.Delete("Test.sdf");

    SqlCeEngine engine = new SqlCeEngine("Data Source = Test.sdf");
    engine.CreateDatabase();

    conn = new SqlCeConnection("Data Source = Test.sdf");
    conn.Open();

    SqlCeCommand cmd = conn.CreateCommand();
    cmd.CommandText = "CREATE TABLE myTable (col1 INT)";
    cmd.ExecuteNonQuery();

    cmd.CommandText = "SELECT * FROM myTable";

    SqlCeResultSet rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable |
        ResultSetOptions.Scrollable);

    SqlCeUpdatableRecord rec = rs.CreateRecord();

    // Insert 10 records
    //
    for (int i = 0; i < 10; i++)
    {
        rec.SetInt32(0, i);
        rs.Insert(rec);
    }

    // Update the 5th record
    //
    if (true == rs.ReadAbsolute(5))
    {
        rs.SetInt32(0, 55);
        rs.Update();
    }

    // Delete the 2nd record
    //
    if (true == rs.ReadAbsolute(2))
    {
        rs.Delete();
    }
}
catch (Exception e)
{
    MessageBox.Show(e.Message);
}
finally
{
    conn.Close();
}

平台

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

Windows Vista、Microsoft Windows XP SP2 和 Windows Server 2003 SP1 支持 Microsoft .NET Framework 3.0。

通过

SqlCeResultSet.Insert 方法 (SqlCeUpdatableRecord)

语法

参数

备注

示例

平台

版本信息

.NET Framework

.NET Compact Framework

请参见

参考

其他资源