/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// datagridviewcellerrortextneededeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this DataGridViewCellErrorTextNeededEventHandler datagridviewcellerrortextneededeventhandler, Object sender, DataGridViewCellErrorTextNeededEventArgs e, AsyncCallback callback)
{
if(datagridviewcellerrortextneededeventhandler == null) throw new ArgumentNullException("datagridviewcellerrortextneededeventhandler");
return datagridviewcellerrortextneededeventhandler.BeginInvoke(sender, e, callback, null);
}
protected virtual void OnCellErrorTextNeeded (DataGridViewCellErrorTextNeededEventArgs e)
{
DataGridViewCellErrorTextNeededEventHandler eh = (DataGridViewCellErrorTextNeededEventHandler)(Events [CellErrorTextNeededEvent]);
if (eh != null)
eh (this, e);
}
internal string OnCellErrorTextNeeded(int columnIndex, int rowIndex, string errorText)
{
Debug.Assert(columnIndex >= 0);
Debug.Assert(rowIndex >= 0);
DataGridViewCellErrorTextNeededEventArgs dgvcetne = new DataGridViewCellErrorTextNeededEventArgs(columnIndex, rowIndex, errorText);
OnCellErrorTextNeeded(dgvcetne);
return dgvcetne.ErrorText;
}
[SuppressMessage("Microsoft.Usage", "CA2208:InstantiateArgumentExceptionsCorrectly")] // e.ColumnIndex / e.RowIndex is more precise than just e
protected virtual void OnCellErrorTextNeeded(DataGridViewCellErrorTextNeededEventArgs e)
{
if (e.ColumnIndex >= this.Columns.Count)
{
throw new ArgumentOutOfRangeException("e.ColumnIndex");
}
if (e.RowIndex >= this.Rows.Count)
{
throw new ArgumentOutOfRangeException("e.RowIndex");
}
DataGridViewCellErrorTextNeededEventHandler eh = this.Events[EVENT_DATAGRIDVIEWCELLERRORTEXTNEEDED] as DataGridViewCellErrorTextNeededEventHandler;
if (eh != null && !this.dataGridViewOper[DATAGRIDVIEWOPER_inDispose] && !this.IsDisposed)
{
eh(this, e);
}
}
private void dgvBookmarks_CellErrorTextNeeded(object sender, DataGridViewCellErrorTextNeededEventArgs e)
{
e.ErrorText = string.Empty;
if (e.RowIndex < 0 || e.RowIndex >= _bookmarks.Count)
return;
if (dgvBookmarks.Columns[e.ColumnIndex] == clmTarget)
{
if (_bookmarks[e.RowIndex].Target < _images.Count)
return;
e.ErrorText = "ブックマークの対象インデックスは画像数未満である必要があります。";
}
}
protected virtual void OnCellErrorTextNeeded(DataGridViewCellErrorTextNeededEventArgs e);
internal string OnCellErrorTextNeeded(int columnIndex, int rowIndex, string errorText)
{
DataGridViewCellErrorTextNeededEventArgs e = new DataGridViewCellErrorTextNeededEventArgs(columnIndex, rowIndex, errorText);
this.OnCellErrorTextNeeded(e);
return e.ErrorText;
}
protected virtual void OnCellErrorTextNeeded(DataGridViewCellErrorTextNeededEventArgs e)
{
if (e.ColumnIndex >= this.Columns.Count)
{
throw new ArgumentOutOfRangeException("e.ColumnIndex");
}
if (e.RowIndex >= this.Rows.Count)
{
throw new ArgumentOutOfRangeException("e.RowIndex");
}
DataGridViewCellErrorTextNeededEventHandler handler = base.Events[EVENT_DATAGRIDVIEWCELLERRORTEXTNEEDED] as DataGridViewCellErrorTextNeededEventHandler;
if (((handler != null) && !this.dataGridViewOper[0x100000]) && !base.IsDisposed)
{
handler(this, e);
}
}
private void dataGridView1_CellErrorTextNeeded(object sender, DataGridViewCellErrorTextNeededEventArgs e)
{
}
