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SqlRowUpdatedEventArgs 類別

定義

提供 RowUpdated 事件的資料。

public ref class SqlRowUpdatedEventArgs sealed : System::Data::Common::RowUpdatedEventArgs
public sealed class SqlRowUpdatedEventArgs : System.Data.Common.RowUpdatedEventArgs
type SqlRowUpdatedEventArgs = class
    inherit RowUpdatedEventArgs
Public NotInheritable Class SqlRowUpdatedEventArgs
Inherits RowUpdatedEventArgs
繼承
SqlRowUpdatedEventArgs

範例

下列範例示範如何使用 RowUpdatingRowUpdated 事件。

事件會 RowUpdating 傳回此輸出:

事件自變數: (command=System.Data.SqlClient.SqlCommand commandType=2 status=0)

事件會 RowUpdated 傳回此輸出:

事件自變數: (command=System.Data.SqlClient.SqlCommand commandType=2 recordsAffected=1 row=System.Data.DataRow[37] status=0)

// handler for RowUpdating event
private static void OnRowUpdating(object sender, SqlRowUpdatingEventArgs e)
{
    PrintEventArgs(e);
}

// handler for RowUpdated event
private static void OnRowUpdated(object sender, SqlRowUpdatedEventArgs e)
{
    PrintEventArgs(e);
}

public static int Main()
{
    const string connectionString =
              "Integrated Security=SSPI;database=Northwind;server=MSSQL1";
    const string queryString = "SELECT * FROM Products";

    // create DataAdapter
    SqlDataAdapter adapter = new SqlDataAdapter(queryString, connectionString);
    SqlCommandBuilder builder = new SqlCommandBuilder(adapter);

    // Create and fill DataSet (select only first 5 rows)
    DataSet dataSet = new DataSet();
    adapter.Fill(dataSet, 0, 5, "Table");

    // Modify DataSet
    DataTable table = dataSet.Tables["Table"];
    table.Rows[0][1] = "new product";

    // add handlers
    adapter.RowUpdating += new SqlRowUpdatingEventHandler( OnRowUpdating );
    adapter.RowUpdated += new SqlRowUpdatedEventHandler( OnRowUpdated );

    // update, this operation fires two events
    // (RowUpdating/RowUpdated) per changed row
    adapter.Update(dataSet, "Table");

    // remove handlers
    adapter.RowUpdating -= new SqlRowUpdatingEventHandler( OnRowUpdating );
    adapter.RowUpdated -= new SqlRowUpdatedEventHandler( OnRowUpdated );
    return 0;
}

private static void PrintEventArgs(SqlRowUpdatingEventArgs args)
{
    Console.WriteLine("OnRowUpdating");
    Console.WriteLine("  event args: ("+
        " command=" + args.Command +
        " commandType=" + args.StatementType +
        " status=" + args.Status + ")");
}

private static void PrintEventArgs(SqlRowUpdatedEventArgs args)
{
    Console.WriteLine("OnRowUpdated");
    Console.WriteLine( "  event args: ("+
        " command=" + args.Command +
        " commandType=" + args.StatementType +
        " recordsAffected=" + args.RecordsAffected +
        " status=" + args.Status + ")");
}
    ' handler for RowUpdating event
    Private Shared Sub OnRowUpdating(sender As Object, e As SqlRowUpdatingEventArgs)
        PrintEventArgs(e)
    End Sub 

    ' handler for RowUpdated event
    Private Shared Sub OnRowUpdated(sender As Object, e As SqlRowUpdatedEventArgs)
        PrintEventArgs(e)
    End Sub 
    
    'Entry point which delegates to C-style main Private Function
    Public Overloads Shared Sub Main()
        System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs())
    End Sub
    
    Overloads Public Shared Function Main(args() As String) As Integer
        Const connectionString As String = _
            "Integrated Security=SSPI;database=Northwind;server=MSSQL1"
        Const queryString As String = "SELECT * FROM Products"
        
        ' create DataAdapter
        Dim adapter As New SqlDataAdapter(queryString, connectionString)
        Dim builder As New SqlCommandBuilder(adapter)
        
        ' Create and fill DataSet (select only first 5 rows)
        Dim dataSet As New DataSet()
        adapter.Fill(dataSet, 0, 5, "Table")
        
        ' Modify DataSet
        Dim table As DataTable = dataSet.Tables("Table")
        table.Rows(0)(1) = "new product"
        
        ' add handlers
        AddHandler adapter.RowUpdating, AddressOf OnRowUpdating
        AddHandler adapter.RowUpdated, AddressOf OnRowUpdated
        
        ' update, this operation fires two events 
        '(RowUpdating/RowUpdated) per changed row 
        adapter.Update(dataSet, "Table")
        
        ' remove handlers
        RemoveHandler adapter.RowUpdating, AddressOf OnRowUpdating
        RemoveHandler adapter.RowUpdated, AddressOf OnRowUpdated
        Return 0
    End Function 
    
    
    Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatingEventArgs)
        Console.WriteLine("OnRowUpdating")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
           " commandType=" & args.StatementType & " status=" & args.Status & ")")
    End Sub 
    
    
    Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatedEventArgs)
        Console.WriteLine("OnRowUpdated")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
           " commandType=" & args.StatementType & " recordsAffected=" & _
           args.RecordsAffected & " status=" & args.Status & ")")
    End Sub 
End Class

備註

RowUpdated 到數據列完成時 Update ,就會引發 事件。

使用 Update時,每個數據列都會更新兩個事件。 執行順序如下:

  1. 中的 DataRow 值會移至參數值。

  2. 便會引發 OnRowUpdating 事件。

  3. 命令會執行。

  4. 如果命令設定 FirstReturnedRecord為 ,且第一個傳回的結果會放在 中 DataRow

  5. 如果有輸出參數,它們會放在 中 DataRow

  6. 便會引發 OnRowUpdated 事件。

  7. 呼叫 AcceptChanges

建構函式

SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

初始化 SqlRowUpdatedEventArgs 類別的新執行個體。

屬性

Command

取得或設定當呼叫 SqlCommand 時執行的 Update(DataSet)

Errors

取得執行 Command 時由 .NET 資料提供者產生的任何錯誤。

(繼承來源 RowUpdatedEventArgs)
RecordsAffected

取得因執行 SQL 陳述式所變更、插入或刪除的資料列數目。

(繼承來源 RowUpdatedEventArgs)
Row

取得經由 DataRow 所傳送的 Update(DataSet)

(繼承來源 RowUpdatedEventArgs)
RowCount

取得在已更新記錄的批次中處理的列數。

(繼承來源 RowUpdatedEventArgs)
StatementType

取得已執行的 SQL 陳述式型別。

(繼承來源 RowUpdatedEventArgs)
Status

取得 UpdateStatusCommand

(繼承來源 RowUpdatedEventArgs)
TableMapping

取得經由 DataTableMapping 所傳送的 Update(DataSet)

(繼承來源 RowUpdatedEventArgs)

方法

CopyToRows(DataRow[], Int32)

複製已修改之列的參考至所提供的陣列中。

(繼承來源 RowUpdatedEventArgs)
CopyToRows(DataRow[])

複製已修改之列的參考至所提供的陣列中。

(繼承來源 RowUpdatedEventArgs)
Equals(Object)

判斷指定的物件是否等於目前的物件。

(繼承來源 Object)
GetHashCode()

做為預設雜湊函式。

(繼承來源 Object)
GetType()

取得目前執行個體的 Type

(繼承來源 Object)
MemberwiseClone()

建立目前 Object 的淺層複製。

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。

(繼承來源 Object)

適用於

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