public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var gridLength = GridLengthUtils.ConvertToGridLength(value?.ToString());
return(gridLength.IsAbsolute || gridLength.IsAuto);
}
private static void DataGrid_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
{
var dataGrid = sender as DataGrid;
#region Get User Custom DataGridColumnAttribute
var visibility = e.Column.Visibility;
var width = dataGrid.ColumnWidth;
var header = e.Column.Header;
var readOnly = e.Column.IsReadOnly;
var bindingMode = e.Column.IsReadOnly ? BindingMode.OneWay : BindingMode.TwoWay;
var updateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
var descriptor = e.PropertyDescriptor as PropertyDescriptor;
foreach (Attribute attribute in descriptor.Attributes)
{
if (attribute is DataGridColumnAttribute)
{
var dgcAttribute = attribute as DataGridColumnAttribute;
if (dgcAttribute.ReadOnly)
{
readOnly = true;
}
if (dgcAttribute.Ignore)
{
visibility = Visibility.Collapsed;
}
if (!string.IsNullOrEmpty(dgcAttribute.ColumnWidth))
{
width = GridLengthUtils.ConvertToDataGridLength(dgcAttribute.ColumnWidth);
}
if (dgcAttribute.BindingMode != null)
{
bindingMode = (BindingMode)dgcAttribute.BindingMode;
}
if (dgcAttribute.UpdateSourceTrigger != null)
{
updateSourceTrigger = (UpdateSourceTrigger)dgcAttribute.UpdateSourceTrigger;
}
}
if (attribute is DisplayNameAttribute)
{
header = (attribute as DisplayNameAttribute).DisplayName;
}
}
#endregion
if (e.PropertyType.IsEnum)
{
var newColumn = new DataGridComboBoxColumn()
{
Width = width,
Header = header,
IsReadOnly = readOnly,
Visibility = visibility,
};
newColumn.ItemsSource = Enum.GetValues(e.PropertyType).Cast <Enum>();
newColumn.SelectedItemBinding = new Binding(e.PropertyName)
{
Mode = bindingMode, UpdateSourceTrigger = updateSourceTrigger
};
newColumn.EditingElementStyle = new Style(typeof(ComboBox))
{
BasedOn = (Style)dataGrid.FindResource(typeof(ComboBox))
};
newColumn.EditingElementStyle.Setters.Add(new Setter(ComboBox.HeightProperty, 30.0));
newColumn.EditingElementStyle.Setters.Add(new Setter(ComboBox.PaddingProperty, new Thickness(5, 0, 20, 0)));
e.Column = newColumn;
}
else if (e.PropertyType == typeof(bool))
{
var newColumn = new DataGridCheckBoxColumn()
{
Width = width,
Header = header,
IsReadOnly = readOnly,
Visibility = visibility,
};
newColumn.Binding = new Binding(e.PropertyName)
{
Mode = bindingMode, UpdateSourceTrigger = updateSourceTrigger
};
newColumn.ElementStyle = new Style(typeof(CheckBox))
{
BasedOn = (Style)dataGrid.FindResource(typeof(CheckBox))
};
newColumn.ElementStyle.Setters.Add(new Setter(CheckBox.BorderThicknessProperty, new Thickness(1)));
newColumn.ElementStyle.Setters.Add(new Setter(CheckBox.BackgroundProperty, Colors.Transparent.ToBrush()));
newColumn.ElementStyle.Setters.Add(new Setter(CheckBoxHelper.GlyphBrushProperty, Colors.Transparent.ToBrush()));
newColumn.EditingElementStyle = new Style(typeof(CheckBox))
{
BasedOn = (Style)dataGrid.FindResource(typeof(CheckBox))
};
newColumn.EditingElementStyle.Setters.Add(new Setter(CheckBox.BorderThicknessProperty, new Thickness(1)));
newColumn.EditingElementStyle.Setters.Add(new Setter(CheckBox.BackgroundProperty, Colors.Transparent.ToBrush()));
newColumn.EditingElementStyle.Setters.Add(new Setter(CheckBoxHelper.GlyphBrushProperty, Colors.Transparent.ToBrush()));
if (dataGrid.IsReadOnly)
{
newColumn.ElementStyle.Setters.Add(new Setter(CheckBox.IsEnabledProperty, false));
newColumn.ElementStyle.Setters.Add(new Setter(CheckBox.OpacityProperty, 1.0));
}
newColumn.CellStyle = new Style(typeof(DataGridCell))
{
BasedOn = (Style)dataGrid.FindResource(typeof(DataGridCell)),
};
e.Column = newColumn;
}
else
{
var newColumn = new DataGridTextColumn()
{
Width = width,
Header = header,
IsReadOnly = readOnly,
Visibility = visibility,
};
newColumn.Binding = new Binding(e.PropertyName)
{
Mode = bindingMode, UpdateSourceTrigger = updateSourceTrigger
};
newColumn.ElementStyle = new Style(typeof(TextBlock))
{
BasedOn = (Style)dataGrid.FindResource(typeof(TextBlock))
};
newColumn.ElementStyle.Setters.Add(new Setter(TextBox.MaxHeightProperty, 100.0));
newColumn.EditingElementStyle = new Style(typeof(TextBox))
{
BasedOn = (Style)dataGrid.FindResource(typeof(TextBox))
};
newColumn.EditingElementStyle.Setters.Add(new Setter(TextBox.MaxHeightProperty, 100.0));
newColumn.EditingElementStyle.Setters.Add(new Setter(TextBox.VerticalScrollBarVisibilityProperty, ScrollBarVisibility.Auto));
newColumn.EditingElementStyle.Setters.Add(new Setter(TextBox.HorizontalScrollBarVisibilityProperty, ScrollBarVisibility.Auto));
newColumn.EditingElementStyle.Setters.Add(new Setter(TextBox.MarginProperty, new Thickness(2)));
newColumn.EditingElementStyle.Setters.Add(new Setter(TextBoxHelper.FocusedShadowColorProperty, Colors.Transparent));
newColumn.CellStyle = new Style(typeof(DataGridCell))
{
BasedOn = (Style)dataGrid.FindResource(typeof(DataGridCell)),
};
newColumn.CellStyle.Setters.Add(new Setter(DataGridCell.PaddingProperty, new Thickness(0, 0, 10, 0)));
e.Column = newColumn;
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return(GridLengthUtils.ConvertToGridLength(value?.ToString()));
}
public ColumnWidthAttribute(string width)
{
Width = GridLengthUtils.ConvertToDataGridLength(width);
}
