private void dataGridView1_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
{
if (e.Row.Index < this.CanData.Count)
{
// If the user has deleted an existing row, remove the
// corresponding CANDATA object from the data store.
this.CanData.RemoveAt(e.Row.Index);
}
if (e.Row.Index == this.rowInEdit)
{
// If the user has deleted a newly created row, release
// the corresponding CANDATA object.
this.rowInEdit = -1;
this.CANDATAInEdit = null;
}
}
private void dataGridView1_CellValuePushed(object sender, DataGridViewCellValueEventArgs e)
{
CANDATA CANDATATmp = null;
// Store a reference to the CANDATA object for the row being edited.
if (e.RowIndex < this.CanData.Count)
{
// If the user is editing a new row, create a new CANDATA object.
if (this.CANDATAInEdit == null)
{
this.CANDATAInEdit = new CANDATA(
((CANDATA)this.CanData[e.RowIndex]).CompanyName,
((CANDATA)this.CanData[e.RowIndex]).ContactName);
}
CANDATATmp = this.CANDATAInEdit;
this.rowInEdit = e.RowIndex;
}
else
{
CANDATATmp = this.CANDATAInEdit;
}
// Set the appropriate CANDATA property to the cell value entered.
String newValue = e.Value as String;
switch (this.dataGridView1.Columns[e.ColumnIndex].Name)
{
case "Company Name":
CANDATATmp.CompanyName = newValue;
break;
case "Contact Name":
CANDATATmp.ContactName = newValue;
break;
}
}
private void dataGridView1_RowValidated(object sender, DataGridViewCellEventArgs e)
{
// Save row changes if any were made and release the edited
// CANDATA object if there is one.
if (e.RowIndex >= this.CanData.Count &&
e.RowIndex != this.dataGridView1.Rows.Count - 1)
{
// Add the new CANDATA object to the data store.
this.CanData.Add(this.CANDATAInEdit);
this.CANDATAInEdit = null;
this.rowInEdit = -1;
}
else if (this.CANDATAInEdit != null &&
e.RowIndex < this.CanData.Count)
{
// Save the modified CANDATA object in the data store.
this.CanData[e.RowIndex] = this.CANDATAInEdit;
this.CANDATAInEdit = null;
this.rowInEdit = -1;
}
else if (this.dataGridView1.ContainsFocus)
{
this.CANDATAInEdit = null;
this.rowInEdit = -1;
}
}
private void dataGridView1_NewRowNeeded(object sender, DataGridViewRowEventArgs e)
{
// Create a new CANDATA object when the user edits
// the row for new records.
this.CANDATAInEdit = new CANDATA();
this.rowInEdit = this.dataGridView1.Rows.Count - 1;
}
private void dataGridView1_CancelRowEdit(object sender, QuestionEventArgs e)
{
if (this.rowInEdit == this.dataGridView1.Rows.Count - 2 &&
this.rowInEdit == this.CanData.Count)
{
// If the user has canceled the edit of a newly created row,
// replace the corresponding CANDATA object with a new, empty one.
this.CANDATAInEdit = new CANDATA();
}
else
{
// If the user has canceled the edit of an existing row,
// release the corresponding CANDATA object.
this.CANDATAInEdit = null;
this.rowInEdit = -1;
}
}
