public void SetTableSource(IFeatureSet fs, int layerHandle, bool ogr)
{
if (fs == null)
{
RowCount = 0;
return;
}
_layerHandle = layerHandle;
_shapefile = fs;
_table = fs.Table;
_ogr = ogr;
InitColumns(_table);
RowManager.Reset(_shapefile);
RowCount = 0;
// this will clear all rows at once or else it will try to remove them one by one (veeeery slow)
RowCount = _table.NumRows;
bool editing = _shapefile.CanEditTable();
ReadOnly = !editing;
}
public void ClearSorting()
{
RowManager.ClearSorting(TableSource);
foreach (DataGridViewColumn cmn in Columns)
{
cmn.HeaderCell.SortGlyphDirection = SortOrder.None;
}
Invalidate();
}
private void SortByColumn <T>(int cmnIndex, bool ascending) where T : IComparable
{
var list = new List <SortItem <T> > {
Capacity = _table.NumRows
};
string defValue = string.Empty;
bool isString = typeof(T) == typeof(string);
for (int i = 0; i < _table.NumRows; i++)
{
var val = _table.CellValue(cmnIndex, i);
if (val == null)
{
if (isString)
{
val = defValue;
}
else
{
val = default(T);
}
}
var item = new SortItem <T>((T)val, i);
list.Add(item);
}
list.Sort();
if (!ascending)
{
list.Reverse();
}
var result = list.Select(item => item.RealIndex);
RowManager.SetSorting(cmnIndex, ascending, result);
}
private void GridCellValueNeeded(object sender, DataGridViewCellValueEventArgs e)
{
int realIndex = RowManager.RealIndex(e.RowIndex);
e.Value = _table.CellValue(e.ColumnIndex, realIndex);
}
private void GridCellValuePushed(object sender, DataGridViewCellValueEventArgs e)
{
var s = e.Value as string;
int realIndex = RowManager.RealIndex(e.RowIndex);
var fld = _table.Fields[e.ColumnIndex];
if (s == null)
{
switch (fld.Type)
{
case AttributeType.String:
_table.EditCellValue(e.ColumnIndex, realIndex, string.Empty);
break;
case AttributeType.Integer:
_table.EditCellValue(e.ColumnIndex, realIndex, 0);
break;
case AttributeType.Double:
_table.EditCellValue(e.ColumnIndex, realIndex, 0.0);
break;
case AttributeType.Boolean:
_table.EditCellValue(e.ColumnIndex, realIndex, false);
break;
case AttributeType.Date:
_table.EditCellValue(e.ColumnIndex, realIndex, DateTime.MinValue);
break;
}
}
else
{
switch (fld.Type)
{
case AttributeType.String:
if (fld.Width < s.Length)
{
MessageService.Current.Info("The string is too long and will be truncated.");
s = s.Substring(0, fld.Width);
}
_table.EditCellValue(e.ColumnIndex, realIndex, s);
break;
case AttributeType.Integer:
{
if (int.TryParse(s, out int val))
{
_table.EditCellValue(e.ColumnIndex, realIndex, val);
}
else
{
MessageService.Current.Info("The string is not recognized as an integer value.");
}
}
break;
case AttributeType.Double:
{
if (double.TryParse(s, out double val))
{
_table.EditCellValue(e.ColumnIndex, realIndex, val);
}
else
{
MessageService.Current.Info(
"The string is not recognized as a floating point numeric value.");
}
}
break;
case AttributeType.Date:
{
if (DateTime.TryParse(s, out DateTime val))
{
_table.EditCellValue(e.ColumnIndex, realIndex, val);
}
else
{
MessageService.Current.Info(
"The string is not recognized as a date/time value.");
}
}
break;
case AttributeType.Boolean:
{
if (bool.TryParse(s, out bool val))
{
_table.EditCellValue(e.ColumnIndex, realIndex, val);
}
else
{
MessageService.Current.Info(
"The string is not recognized as a boolean value.");
}
}
break;
}
}
DelegateHelper.FireEvent(this, CellValueEdited);
}