DataTable.RowChanging Event

Occurs when a DataRow is changing.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

public event DataRowChangeEventHandler RowChanging


private static void DataTableRowChanging()
{
	DataTable custTable = new DataTable("Customers");
	// add columns
	custTable.Columns.Add("id", typeof(int));
	custTable.Columns.Add("name", typeof(string));
	custTable.Columns.Add("address", typeof(string));

	// set PrimaryKey
	custTable.Columns[ "id" ].Unique = true;
	custTable.PrimaryKey = new DataColumn[] { custTable.Columns["id"] };

	// add a RowChanging event handler for the table.
	custTable.RowChanging += new DataRowChangeEventHandler(Row_Changing);


	// add ten rows
	for(int id=1; id<=10; id++)
	{
		custTable.Rows.Add(
			new object[] { id, string.Format("customer{0}", id), 
            string.Format("address{0}", id) });
	}
	
	custTable.AcceptChanges();

	// change the name column in all the rows
	foreach(DataRow row in custTable.Rows)
	{
		row["name"] = string.Format("vip{0}", row["id"]);
	}

}

private static void Row_Changing(object sender, DataRowChangeEventArgs e)
{
	Console.WriteLine("Row_Changing Event: name={0}; action={1}", 
		e.Row["name"], e.Action);
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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