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| using System; | |
| using System.Data; | |
| class Class1 | |
| { | |
| static void Main() | |
| { | |
| DataTableEvents(); | |
| Console.ReadLine(); | |
| } | |
| // <Snippet1> | |
| static void DataTableEvents() | |
| { | |
| DataTable table = new DataTable("Customers"); | |
| // Add two columns, id and name. | |
| table.Columns.Add("id", typeof(int)); | |
| table.Columns.Add("name", typeof(string)); | |
| // Set the primary key. | |
| table.Columns["id"].Unique = true; | |
| table.PrimaryKey = new DataColumn[] { table.Columns["id"] }; | |
| // Add a RowChanged event handler. | |
| table.RowChanged += new DataRowChangeEventHandler(Row_Changed); | |
| // Add a RowChanging event handler. | |
| table.RowChanging += new DataRowChangeEventHandler(Row_Changing); | |
| // Add a RowDeleted event handler. | |
| table.RowDeleted += new DataRowChangeEventHandler(Row_Deleted); | |
| // Add a RowDeleting event handler. | |
| table.RowDeleting += new DataRowChangeEventHandler(Row_Deleting); | |
| // Add a ColumnChanged event handler. | |
| table.ColumnChanged += new | |
| DataColumnChangeEventHandler(Column_Changed); | |
| // Add a ColumnChanging event handler. | |
| table.ColumnChanging += new | |
| DataColumnChangeEventHandler(Column_Changing); | |
| // Add a TableNewRow event handler. | |
| table.TableNewRow += new | |
| DataTableNewRowEventHandler(Table_NewRow); | |
| // Add a TableCleared event handler. | |
| table.TableCleared += new | |
| DataTableClearEventHandler(Table_Cleared); | |
| // Add a TableClearing event handler. | |
| table.TableClearing += new | |
| DataTableClearEventHandler(Table_Clearing); | |
| // Add a customer. | |
| DataRow row = table.NewRow(); | |
| row["id"] = 1; | |
| row["name"] = "Customer1"; | |
| table.Rows.Add(row); | |
| table.AcceptChanges(); | |
| // Change the customer name. | |
| table.Rows[0]["name"] = "ChangedCustomer1"; | |
| // Delete the row. | |
| table.Rows[0].Delete(); | |
| // Clear the table. | |
| table.Clear(); | |
| } | |
| private static void Row_Changed(object sender, DataRowChangeEventArgs e) | |
| { | |
| Console.WriteLine("Row_Changed Event: name={0}; action={1}", | |
| e.Row["name"], e.Action); | |
| } | |
| private static void Row_Changing(object sender, DataRowChangeEventArgs e) | |
| { | |
| Console.WriteLine("Row_Changing Event: name={0}; action={1}", | |
| e.Row["name"], e.Action); | |
| } | |
| private static void Row_Deleted(object sender, DataRowChangeEventArgs e) | |
| { | |
| Console.WriteLine("Row_Deleted Event: name={0}; action={1}", | |
| e.Row["name", DataRowVersion.Original], e.Action); | |
| } | |
| private static void Row_Deleting(object sender, | |
| DataRowChangeEventArgs e) | |
| { | |
| Console.WriteLine("Row_Deleting Event: name={0}; action={1}", | |
| e.Row["name"], e.Action); | |
| } | |
| private static void Column_Changed(object sender, DataColumnChangeEventArgs e) | |
| { | |
| Console.WriteLine("Column_Changed Event: ColumnName={0}; RowState={1}", | |
| e.Column.ColumnName, e.Row.RowState); | |
| } | |
| private static void Column_Changing(object sender, DataColumnChangeEventArgs e) | |
| { | |
| Console.WriteLine("Column_Changing Event: ColumnName={0}; RowState={1}", | |
| e.Column.ColumnName, e.Row.RowState); | |
| } | |
| private static void Table_NewRow(object sender, | |
| DataTableNewRowEventArgs e) | |
| { | |
| Console.WriteLine("Table_NewRow Event: RowState={0}", | |
| e.Row.RowState.ToString()); | |
| } | |
| private static void Table_Cleared(object sender, DataTableClearEventArgs e) | |
| { | |
| Console.WriteLine("Table_Cleared Event: TableName={0}; Rows={1}", | |
| e.TableName, e.Table.Rows.Count.ToString()); | |
| } | |
| private static void Table_Clearing(object sender, DataTableClearEventArgs e) | |
| { | |
| Console.WriteLine("Table_Clearing Event: TableName={0}; Rows={1}", | |
| e.TableName, e.Table.Rows.Count.ToString()); | |
| } | |
| // </Snippet1> | |
| } |