Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

DataTable.RowChanging Event

Occurs when a DataRow is changing.

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

public event DataRowChangeEventHandler RowChanging

For more information, see Handling DataTable Events.

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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
Show:
© 2015 Microsoft