DataGridViewRowEventHandler Delegate
Represents the method that will handle row-related events of a DataGridView.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
public delegate void DataGridViewRowEventHandler( Object^ sender, DataGridViewRowEventArgs^ e )
Parameters
- sender
-
Type:
System::Object^
The source of the event.
- e
-
Type:
System.Windows.Forms::DataGridViewRowEventArgs^
A DataGridViewRowEventArgs that contains the event data.
The DataGridViewRowEventHandler handles the following DataGridView events:
When you create a DataGridViewRowEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see NIB: Events and Delegates.
The following code example uses a DataGridViewRowEventHandler delegate to handle the NewRowNeeded event. This code example is part of a larger example provided in the VirtualMode property reference topic.
void VirtualConnector::dataGridView1_NewRowNeeded
(Object^ sender, DataGridViewRowEventArgs^ e)
{
newRowNeeded = true;
}
void VirtualConnector::dataGridView1_RowsAdded
(Object^ sender, DataGridViewRowsAddedEventArgs^ e)
{
if (newRowNeeded)
{
newRowNeeded = false;
numberOfRows = numberOfRows + 1;
}
}
#pragma region Data store maintance
void VirtualConnector::dataGridView1_CellValueNeeded
(Object^ sender, DataGridViewCellValueEventArgs^ e)
{
if (store->ContainsKey(e->RowIndex))
{
// Use the store if the e value has been modified
// and stored.
e->Value = gcnew Int32(store->default[e->RowIndex]);
}
else if (newRowNeeded && e->RowIndex == numberOfRows)
{
if (dataGridView1->IsCurrentCellInEditMode)
{
e->Value = initialValue;
}
else
{
// Show a blank e if the cursor is just loitering
// over(the) last row.
e->Value = String::Empty;
}
}
else
{
e->Value = e->RowIndex;
}
}
void VirtualConnector::dataGridView1_CellValuePushed
(Object^ sender, DataGridViewCellValueEventArgs^ e)
{
String^ value = e->Value->ToString();
store[e->RowIndex] = Int32::Parse(value,
CultureInfo::CurrentCulture);
}
#pragma endregion
Available since 2.0