internal void OnHeaderClicked(MouseEventArgs e)
{
if (!IsSortable)
{
return;
}
var list = List;
var sc = SortCriteria;
var curSf = SortField;
var newSf = new ListSortField()
{
PropertyName = Property.Name,
SortDirection = ListSortDirection.Ascending
};
if (e.CtrlKey && curSf != null)
{
sc.Remove(curSf);
}
else if (e.CtrlKey && sc != null)
{
sc.Add(newSf);
}
else if (curSf != null)
{
curSf.SortDirection = ListSortDirection.Toggle(curSf.SortDirection);
}
else if (list != null)
{
list.SortCriteria = new ListSortCriteria()
{
newSf
}
}
;
if (list != null)
{
list.Sort();
}
}
#endregion
}
/// <summary>
/// Constructs a new grid view binding for the given GridView web control.
/// Sets up grid listeners to handle the data binding.
/// </summary>
/// <param name="grid">The GridView control to be bound to the data list object.</param>
protected GridViewBinding(GridView grid)
: base(grid)
{
grid.RowDataBound += delegate(object sender, GridViewRowEventArgs e)
{
if (!(e.Row.DataItem is DataRow dataRow))
{
return;
}
if (dataRow.Selected)
{
e.Row.ApplyStyle(grid.SelectedRowStyle);
}
BindToObject(e.Row, dataRow.List, dataRow);
};
grid.PageIndexChanging += delegate(object sender, GridViewPageEventArgs e)
{
if (e.Cancel)
{
return;
}
grid.PageIndex = e.NewPageIndex;
grid.DataBind();
};
grid.Sorting += delegate(object s, GridViewSortEventArgs e)
{
if (e.Cancel)
{
return;
}
if (list.SortCriteria != null && list.SortCriteria.Count == 1 &&
list.SortCriteria[0].PropertyName == e.SortExpression)
{
list.SortCriteria[0].SortDirection = ListSortDirection.Toggle(list.SortCriteria[0].SortDirection);
}
else
{
list.SortCriteria = new ListSortCriteria();
ListSortField sortFld = new ListSortField();
sortFld.PropertyName = e.SortExpression;
sortFld.SortDirection = e.SortDirection == SortDirection.Ascending ?
ListSortDirection.Ascending : ListSortDirection.Descending;
list.SortCriteria.Add(sortFld);
}
list.Sort();
};
grid.RowEditing += delegate(object sender, GridViewEditEventArgs e)
{
if (e.Cancel || list == null)
{
return;
}
grid.EditIndex = e.NewEditIndex;
int idx = grid.PageSize * grid.PageIndex + e.NewEditIndex;
list.EditRow = new DataRow(list);
list.EditRow.CopyFrom(list.GetData()[idx]);
grid.DataBind();
};
grid.RowUpdating += delegate(object sender, GridViewUpdateEventArgs e)
{
if (e.Cancel || list == null)
{
return;
}
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
grid.EditIndex = -1;
list.EditRow = null;
grid.DataBind();
};
grid.RowCancelingEdit += delegate(object sender, GridViewCancelEditEventArgs e)
{
if (e.Cancel || list == null)
{
return;
}
grid.EditIndex = -1;
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
if (list.EditRow != null)
{
list.GetData()[idx].CopyFrom(list.EditRow);
list.EditRow = null;
grid.DataBind(); // stop editing existing object
}
else
{
list.RemoveAt(idx); // delete new object on cancel
}
};
grid.RowDeleting += delegate(object sender, GridViewDeleteEventArgs e)
{
if (e.Cancel)
{
return;
}
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
if (list != null)
{
list.RemoveAt(idx);
}
};
grid.RowCommand += delegate(object sender, GridViewCommandEventArgs e)
{
if (list == null || e.CommandName != "New")
{
return;
}
DataRow newRow = new DataRow(list);
if (int.TryParse("" + e.CommandArgument, out int index))
{
index++;
}
grid.EditIndex = index;
list.Insert(grid.PageSize * grid.PageIndex + index, newRow);
};
grid.SelectedIndexChanging += delegate(object sender, GridViewSelectEventArgs e)
{
if (e.Cancel || list == null)
{
return;
}
int idx = grid.PageSize * grid.PageIndex + e.NewSelectedIndex;
list.SelectRow(idx);
// cancel, since we don't really want the grid to set SelectedIndex, which doesn't work for with paging
e.Cancel = true;
};
// Defer data binding to the Load method after the view state is loaded.
// Otherwise the view state will get corrupted.
grid.Load += delegate
{
grid.DataBind();
};
grid.Unload += delegate
{
BindTo(null);
};
}
/// <summary>
/// Constructs a new grid view binding for the given GridView web control.
/// Sets up grid listeners to handle the data binding.
/// </summary>
/// <param name="grid">The GridView control to be bound to the data list object.</param>
protected GridViewBinding(GridView grid)
: base(grid)
{
grid.RowDataBound += delegate(object sender, GridViewRowEventArgs e)
{
DataRow dataRow = e.Row.DataItem as DataRow;
if (dataRow == null) return;
dataRow.List.CurrentRow = e.Row.DataItemIndex;
if (dataRow.Selected) e.Row.ApplyStyle(grid.SelectedRowStyle);
WebUtil.BindToObject(e.Row, dataRow.List, true);
};
grid.PageIndexChanging += delegate(object sender, GridViewPageEventArgs e)
{
if (e.Cancel) return;
grid.PageIndex = e.NewPageIndex;
grid.DataBind();
};
grid.Sorting += delegate(object s, GridViewSortEventArgs e)
{
if (e.Cancel) return;
if (list.SortCriteria != null && list.SortCriteria.Count == 1 &&
list.SortCriteria[0].PropertyName == e.SortExpression)
{
list.SortCriteria[0].SortDirection = ListSortDirection.Toggle(list.SortCriteria[0].SortDirection);
}
else
{
list.SortCriteria = new ListSortCriteria();
ListSortField sortFld = new ListSortField();
sortFld.PropertyName = e.SortExpression;
sortFld.SortDirection = e.SortDirection == SortDirection.Ascending ?
ListSortDirection.Ascending : ListSortDirection.Descending;
list.SortCriteria.Add(sortFld);
}
list.Sort();
};
grid.RowEditing += delegate(object sender, GridViewEditEventArgs e)
{
if (e.Cancel || list == null) return;
grid.EditIndex = e.NewEditIndex;
int idx = grid.PageSize * grid.PageIndex + e.NewEditIndex;
list.EditRow = new DataRow(list);
list.EditRow.CopyFrom(list.GetData()[idx]);
grid.DataBind();
};
grid.RowUpdating += delegate(object sender, GridViewUpdateEventArgs e)
{
if (e.Cancel || list == null) return;
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
grid.EditIndex = -1;
list.EditRow = null;
grid.DataBind();
};
grid.RowCancelingEdit += delegate(object sender, GridViewCancelEditEventArgs e)
{
if (e.Cancel || list == null) return;
grid.EditIndex = -1;
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
if (list.EditRow != null)
{
list.GetData()[idx].CopyFrom(list.EditRow);
list.EditRow = null;
grid.DataBind(); // stop editing existing object
}
else list.RemoveAt(idx); // delete new object on cancel
};
grid.RowDeleting += delegate(object sender, GridViewDeleteEventArgs e)
{
if (e.Cancel) return;
int idx = grid.PageSize * grid.PageIndex + e.RowIndex;
if (list != null) list.RemoveAt(idx);
};
grid.RowCommand += delegate(object sender, GridViewCommandEventArgs e)
{
if (list == null || e.CommandName != "New") return;
DataRow newRow = new DataRow(list);
int index = 0;
if (Int32.TryParse("" + e.CommandArgument, out index)) index++;
grid.EditIndex = index;
list.Insert(grid.PageSize * grid.PageIndex + index, newRow);
};
grid.SelectedIndexChanging += delegate(object sender, GridViewSelectEventArgs e)
{
if (e.Cancel || list == null) return;
int idx = grid.PageSize * grid.PageIndex + e.NewSelectedIndex;
if (list.SelectRow(idx)) list.FireCollectionChanged();
// cancel, since we don't really want the grid to set SelectedIndex, which doesn't work for with paging
e.Cancel = true;
};
// Defer data binding to the Load method after the view state is loaded.
// Otherwise the view state will get corrupted.
grid.Load += delegate
{
grid.DataBind();
};
grid.Unload += delegate
{
BindTo(null);
};
}
