207 references to IsEmpty
System.ComponentModel.TypeConverter (1)
System\Drawing\ColorConverter.cs (1)
101
if (c.
IsEmpty
)
System.Drawing.Primitives (4)
System\Drawing\ColorTranslator.cs (4)
253
if (c.
IsEmpty
&& string.Equals(htmlColor, "LightGrey", StringComparison.OrdinalIgnoreCase))
259
if (c.
IsEmpty
)
270
if (c.
IsEmpty
)
292
if (c.
IsEmpty
)
System.Windows.Forms (199)
System\Windows\Forms\Control.cs (11)
1059
if (!c.
IsEmpty
)
1079
if (c.
IsEmpty
)
1088
return !c.
IsEmpty
&& IsValidBackColor(c) ? c : DefaultBackColor;
2278
if (!color.
IsEmpty
)
2293
if (color.
IsEmpty
)
2302
return !color.
IsEmpty
? color : DefaultForeColor;
2667
private bool IsValidBackColor(Color c) => c.
IsEmpty
|| GetStyle(ControlStyles.SupportsTransparentBackColor) || c.A == 255;
7377
if (backColor.
IsEmpty
)
7781
if (foreColor.
IsEmpty
)
11362
return !backColor.
IsEmpty
;
11381
internal virtual bool ShouldSerializeForeColor() => !Properties.GetValueOrDefault<Color>(s_foreColorProperty).
IsEmpty
;
System\Windows\Forms\Controls\Buttons\ButtonBase.cs (1)
1370
get => (_isEnableVisualStyleBackgroundSet || (RawBackColor.
IsEmpty
&& (BackColor == SystemColors.Control)))
System\Windows\Forms\Controls\Buttons\ButtonInternal\ButtonFlatAdapter.cs (13)
23
bool hasCustomBorder = Control.FlatAppearance.BorderSize != BorderSize || !Control.FlatAppearance.BorderColor.
IsEmpty
;
27
up: !Control.FlatAppearance.CheckedBackColor.
IsEmpty
33
if (!Control.FlatAppearance.BorderColor.
IsEmpty
)
42
if (!Control.FlatAppearance.CheckedBackColor.
IsEmpty
)
116
bool hasCustomBorder = (Control.FlatAppearance.BorderSize != BorderSize || !Control.FlatAppearance.BorderColor.
IsEmpty
);
120
!Control.FlatAppearance.CheckedBackColor.
IsEmpty
126
if (!Control.FlatAppearance.BorderColor.
IsEmpty
)
135
if (!Control.FlatAppearance.MouseDownBackColor.
IsEmpty
)
210
bool hasCustomBorder = Control.FlatAppearance.BorderSize != BorderSize || !Control.FlatAppearance.BorderColor.
IsEmpty
;
214
up: !Control.FlatAppearance.CheckedBackColor.
IsEmpty
|| state == CheckState.Unchecked,
219
if (!Control.FlatAppearance.BorderColor.
IsEmpty
)
226
Color backColor = !Control.FlatAppearance.MouseOverBackColor.
IsEmpty
228
: !Control.FlatAppearance.CheckedBackColor.
IsEmpty
System\Windows\Forms\Controls\Buttons\ButtonInternal\CheckBoxModernAdapter.cs (1)
89
Color? customBorderColor = Control.FlatAppearance.BorderColor.
IsEmpty
System\Windows\Forms\Controls\Buttons\ButtonInternal\DarkMode\ButtonDarkModeRendererBase.cs (4)
67
=> FlatAppearance is { BorderColor.
IsEmpty
: false } appearance
174
&& FlatAppearance is { MouseOverBackColorCore.
IsEmpty
: false } hoverAppearance)
180
&& FlatAppearance is { MouseDownBackColorCore.
IsEmpty
: false } pressedAppearance)
192
if (!customBaseColor.
IsEmpty
)
System\Windows\Forms\Controls\Buttons\ButtonInternal\DarkMode\ModernButtonColorMath.cs (2)
62
if (customBaseColor.
IsEmpty
&& isDefault)
67
Color baseColor = customBaseColor.
IsEmpty
System\Windows\Forms\Controls\Buttons\ButtonInternal\DarkMode\PopupButtonDarkModeRenderer.cs (1)
133
if (FlatAppearance is { BorderColor.
IsEmpty
: false } appearance)
System\Windows\Forms\Controls\Buttons\ButtonInternal\RadioButtonModernAdapter.cs (1)
89
Color? customBorderColor = Control.FlatAppearance.BorderColor.
IsEmpty
System\Windows\Forms\Controls\Buttons\FlatButtonAppearance.cs (4)
119
get => _mouseDownBackColor.
IsEmpty
146
get => _mouseOverBackColor.
IsEmpty
167
private bool ShouldSerializeMouseDownBackColor() => !_mouseDownBackColor.
IsEmpty
;
171
private bool ShouldSerializeMouseOverBackColor() => !_mouseOverBackColor.
IsEmpty
;
System\Windows\Forms\Controls\DataGridView\DataGridView.cs (2)
1016
if (value.
IsEmpty
)
2652
if (value.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridView.Methods.cs (11)
2849
if (cellStyle is not null && !cellStyle.BackColor.
IsEmpty
)
2853
else if (!columnHeadersStyle.BackColor.
IsEmpty
)
2862
if (cellStyle is not null && !cellStyle.ForeColor.
IsEmpty
)
2866
else if (!columnHeadersStyle.ForeColor.
IsEmpty
)
2875
if (cellStyle is not null && !cellStyle.SelectionBackColor.
IsEmpty
)
2879
else if (!columnHeadersStyle.SelectionBackColor.
IsEmpty
)
2888
if (cellStyle is not null && !cellStyle.SelectionForeColor.
IsEmpty
)
2892
else if (!columnHeadersStyle.SelectionForeColor.
IsEmpty
)
2902
if (cellStyle is not null && !cellStyle.SortGlyphColor.
IsEmpty
)
2906
else if (!columnHeadersStyle.SortGlyphColor.
IsEmpty
)
2910
else if (!dataGridViewStyle.SortGlyphColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewButtonColumn.cs (4)
214
return (!defaultCellStyle.BackColor.
IsEmpty
||
215
!defaultCellStyle.ForeColor.
IsEmpty
||
216
!defaultCellStyle.SelectionBackColor.
IsEmpty
||
217
!defaultCellStyle.SelectionForeColor.
IsEmpty
||
System\Windows\Forms\Controls\DataGridView\DataGridViewCell.cs (24)
1931
if (cellStyle is not null && !cellStyle.BackColor.
IsEmpty
)
1935
else if (rowStyle is not null && !rowStyle.BackColor.
IsEmpty
)
1939
else if (!DataGridView.RowsDefaultCellStyle.BackColor.
IsEmpty
&&
1940
(rowIndex % 2 == 0 || DataGridView.AlternatingRowsDefaultCellStyle.BackColor.
IsEmpty
))
1944
else if (rowIndex % 2 == 1 && !DataGridView.AlternatingRowsDefaultCellStyle.BackColor.
IsEmpty
)
1948
else if (columnStyle is not null && !columnStyle.BackColor.
IsEmpty
)
1957
if (cellStyle is not null && !cellStyle.ForeColor.
IsEmpty
)
1961
else if (rowStyle is not null && !rowStyle.ForeColor.
IsEmpty
)
1965
else if (!DataGridView.RowsDefaultCellStyle.ForeColor.
IsEmpty
&&
1966
(rowIndex % 2 == 0 || DataGridView.AlternatingRowsDefaultCellStyle.ForeColor.
IsEmpty
))
1970
else if (rowIndex % 2 == 1 && !DataGridView.AlternatingRowsDefaultCellStyle.ForeColor.
IsEmpty
)
1974
else if (columnStyle is not null && !columnStyle.ForeColor.
IsEmpty
)
1983
if (cellStyle is not null && !cellStyle.SelectionBackColor.
IsEmpty
)
1987
else if (rowStyle is not null && !rowStyle.SelectionBackColor.
IsEmpty
)
1991
else if (!DataGridView.RowsDefaultCellStyle.SelectionBackColor.
IsEmpty
&&
1992
(rowIndex % 2 == 0 || DataGridView.AlternatingRowsDefaultCellStyle.SelectionBackColor.
IsEmpty
))
1996
else if (rowIndex % 2 == 1 && !DataGridView.AlternatingRowsDefaultCellStyle.SelectionBackColor.
IsEmpty
)
2000
else if (columnStyle is not null && !columnStyle.SelectionBackColor.
IsEmpty
)
2009
if (cellStyle is not null && !cellStyle.SelectionForeColor.
IsEmpty
)
2013
else if (rowStyle is not null && !rowStyle.SelectionForeColor.
IsEmpty
)
2017
else if (!DataGridView.RowsDefaultCellStyle.SelectionForeColor.
IsEmpty
&&
2018
(rowIndex % 2 == 0 || DataGridView.AlternatingRowsDefaultCellStyle.SelectionForeColor.
IsEmpty
))
2022
else if (rowIndex % 2 == 1 && !DataGridView.AlternatingRowsDefaultCellStyle.SelectionForeColor.
IsEmpty
)
2026
else if (columnStyle is not null && !columnStyle.SelectionForeColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewCellStyle.cs (5)
399
if (!dataGridViewCellStyle.BackColor.
IsEmpty
)
404
if (!dataGridViewCellStyle.ForeColor.
IsEmpty
)
409
if (!dataGridViewCellStyle.SelectionBackColor.
IsEmpty
)
414
if (!dataGridViewCellStyle.SelectionForeColor.
IsEmpty
)
464
if (!dataGridViewCellStyle.SortGlyphColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewCheckBoxColumn.cs (4)
300
return (!defaultCellStyle.BackColor.
IsEmpty
||
301
!defaultCellStyle.ForeColor.
IsEmpty
||
302
!defaultCellStyle.SelectionBackColor.
IsEmpty
||
303
!defaultCellStyle.SelectionForeColor.
IsEmpty
||
System\Windows\Forms\Controls\DataGridView\DataGridViewColumn.cs (8)
215
return (!defaultCellStyle.BackColor.
IsEmpty
||
216
!defaultCellStyle.ForeColor.
IsEmpty
||
217
!defaultCellStyle.SelectionBackColor.
IsEmpty
||
218
!defaultCellStyle.SelectionForeColor.
IsEmpty
||
447
if (columnStyle is not null && !columnStyle.BackColor.
IsEmpty
)
456
if (columnStyle is not null && !columnStyle.ForeColor.
IsEmpty
)
465
if (columnStyle is not null && !columnStyle.SelectionBackColor.
IsEmpty
)
474
if (columnStyle is not null && !columnStyle.SelectionForeColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewColumnHeaderCell.cs (9)
301
if (cellStyle is not null && !cellStyle.BackColor.
IsEmpty
)
305
else if (!columnHeadersStyle.BackColor.
IsEmpty
)
314
if (cellStyle is not null && !cellStyle.ForeColor.
IsEmpty
)
318
else if (!columnHeadersStyle.ForeColor.
IsEmpty
)
327
if (cellStyle is not null && !cellStyle.SelectionBackColor.
IsEmpty
)
331
else if (!columnHeadersStyle.SelectionBackColor.
IsEmpty
)
340
if (cellStyle is not null && !cellStyle.SelectionForeColor.
IsEmpty
)
344
else if (!columnHeadersStyle.SelectionForeColor.
IsEmpty
)
1013
if (sortGlyphColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewImageColumn.cs (4)
276
return (!defaultCellStyle.BackColor.
IsEmpty
||
277
!defaultCellStyle.ForeColor.
IsEmpty
||
278
!defaultCellStyle.SelectionBackColor.
IsEmpty
||
279
!defaultCellStyle.SelectionForeColor.
IsEmpty
||
System\Windows\Forms\Controls\DataGridView\DataGridViewRow.cs (24)
615
if (cellStyle is not null && !cellStyle.BackColor.
IsEmpty
)
619
else if (!rowHeadersStyle.BackColor.
IsEmpty
)
628
if (cellStyle is not null && !cellStyle.ForeColor.
IsEmpty
)
632
else if (!rowHeadersStyle.ForeColor.
IsEmpty
)
641
if (cellStyle is not null && !cellStyle.SelectionBackColor.
IsEmpty
)
645
else if (!rowHeadersStyle.SelectionBackColor.
IsEmpty
)
654
if (cellStyle is not null && !cellStyle.SelectionForeColor.
IsEmpty
)
658
else if (!rowHeadersStyle.SelectionForeColor.
IsEmpty
)
813
if (rowStyle is not null && !rowStyle.BackColor.
IsEmpty
)
817
else if (!rowsDefaultCellStyle.BackColor.
IsEmpty
&& (rowIndex % 2 == 0 || alternatingRowsDefaultCellStyle.BackColor.
IsEmpty
))
821
else if (rowIndex % 2 == 1 && !alternatingRowsDefaultCellStyle.BackColor.
IsEmpty
)
830
if (rowStyle is not null && !rowStyle.ForeColor.
IsEmpty
)
834
else if (!rowsDefaultCellStyle.ForeColor.
IsEmpty
&& (rowIndex % 2 == 0 || alternatingRowsDefaultCellStyle.ForeColor.
IsEmpty
))
838
else if (rowIndex % 2 == 1 && !alternatingRowsDefaultCellStyle.ForeColor.
IsEmpty
)
847
if (rowStyle is not null && !rowStyle.SelectionBackColor.
IsEmpty
)
851
else if (!rowsDefaultCellStyle.SelectionBackColor.
IsEmpty
&& (rowIndex % 2 == 0 || alternatingRowsDefaultCellStyle.SelectionBackColor.
IsEmpty
))
855
else if (rowIndex % 2 == 1 && !alternatingRowsDefaultCellStyle.SelectionBackColor.
IsEmpty
)
864
if (rowStyle is not null && !rowStyle.SelectionForeColor.
IsEmpty
)
868
else if (!rowsDefaultCellStyle.SelectionForeColor.
IsEmpty
&& (rowIndex % 2 == 0 || alternatingRowsDefaultCellStyle.SelectionForeColor.
IsEmpty
))
872
else if (rowIndex % 2 == 1 && !alternatingRowsDefaultCellStyle.SelectionForeColor.
IsEmpty
)
System\Windows\Forms\Controls\DataGridView\DataGridViewRowHeaderCell.cs (8)
326
if (cellStyle is not null && !cellStyle.BackColor.
IsEmpty
)
330
else if (!rowHeadersStyle.BackColor.
IsEmpty
)
339
if (cellStyle is not null && !cellStyle.ForeColor.
IsEmpty
)
343
else if (!rowHeadersStyle.ForeColor.
IsEmpty
)
352
if (cellStyle is not null && !cellStyle.SelectionBackColor.
IsEmpty
)
356
else if (!rowHeadersStyle.SelectionBackColor.
IsEmpty
)
365
if (cellStyle is not null && !cellStyle.SelectionForeColor.
IsEmpty
)
369
else if (!rowHeadersStyle.SelectionForeColor.
IsEmpty
)
System\Windows\Forms\Controls\DateTimePicker\DateTimePicker.cs (5)
184
if (value.
IsEmpty
)
244
if (value.
IsEmpty
)
267
if (value.
IsEmpty
)
290
if (value.
IsEmpty
)
313
if (value.
IsEmpty
)
System\Windows\Forms\Controls\Labels\LinkLabel.cs (9)
72
get => !_activeLinkColor.
IsEmpty
94
get => _disabledLinkColor.
IsEmpty
? IEDisabledLinkColor : _disabledLinkColor;
140
if (s_iedisabledLinkColor.
IsEmpty
)
241
get => !_linkColor.
IsEmpty
356
get => !_visitedLinkColor.
IsEmpty
1604
internal bool ShouldSerializeActiveLinkColor() => !_activeLinkColor.
IsEmpty
;
1609
internal bool ShouldSerializeDisabledLinkColor() => !_disabledLinkColor.
IsEmpty
;
1628
internal bool ShouldSerializeLinkColor() => !_linkColor.
IsEmpty
;
1643
private bool ShouldSerializeVisitedLinkColor() => !_visitedLinkColor.
IsEmpty
;
System\Windows\Forms\Controls\Labels\LinkUtilities.cs (3)
78
if (s_ielinkColor.
IsEmpty
)
91
if (s_ieactiveLinkColor.
IsEmpty
)
104
if (s_ievisitedLinkColor.
IsEmpty
)
System\Windows\Forms\Controls\ListView\ListView.cs (2)
2852
nmcd->clrText = !haveRenderInfo || riFore.
IsEmpty
2895
nmcd->clrTextBk = !haveRenderInfo || riBack.
IsEmpty
System\Windows\Forms\Controls\ListView\ListViewInsertionMark.cs (2)
69
if (_color.
IsEmpty
)
138
if (!_color.
IsEmpty
)
System\Windows\Forms\Controls\ListView\ListViewItem.ListViewSubItem.cs (2)
115
return !style.backColor.
IsEmpty
;
133
return !style.foreColor.
IsEmpty
;
System\Windows\Forms\Controls\MonthCalendar\MonthCalendar.cs (3)
908
if (value.
IsEmpty
)
929
if (value.
IsEmpty
)
950
if (value.
IsEmpty
)
System\Windows\Forms\Controls\ToolStrips\ToolStripItem.cs (7)
515
if (!c.
IsEmpty
)
869
if (!foreColor.
IsEmpty
)
1202
if (!color.
IsEmpty
)
2889
if (backColor.
IsEmpty
)
2937
if (foreColor.
IsEmpty
)
3288
return !backColor.
IsEmpty
;
3302
return !foreColor.
IsEmpty
;
System\Windows\Forms\Controls\ToolStrips\ToolStripLabel.cs (6)
95
if (_activeLinkColor.
IsEmpty
)
166
if (_linkColor.
IsEmpty
)
210
if (_visitedLinkColor.
IsEmpty
)
296
return !_activeLinkColor.
IsEmpty
;
302
return !_linkColor.
IsEmpty
;
308
return !_visitedLinkColor.
IsEmpty
;
System\Windows\Forms\Controls\TreeView\TreeNode.cs (4)
194
if (value.
IsEmpty
)
202
if (!oldbk.
IsEmpty
)
420
if (value.
IsEmpty
)
428
if (!oldfc.
IsEmpty
)
System\Windows\Forms\Controls\TreeView\TreeView.cs (2)
2789
if (renderinfo is not null && !riFore.
IsEmpty
)
2794
if (renderinfo is not null && !riBack.
IsEmpty
)
System\Windows\Forms\Dialogs\CommonDialogs\ColorDialog.cs (1)
62
set => _color = !value.
IsEmpty
? value : Color.Black;
System\Windows\Forms\Dialogs\CommonDialogs\FontDialog.cs (1)
105
if (!value.
IsEmpty
)
System\Windows\Forms\Form.cs (2)
593
if (!c.
IsEmpty
)
6210
if (transparencyKey.
IsEmpty
)
System\Windows\Forms\OwnerDrawPropertyBag.cs (2)
77
public virtual bool IsEmpty() => Font is null && ForeColor.
IsEmpty
&& BackColor.
IsEmpty
;
System\Windows\Forms\Rendering\Button\AnimatedPopupButtonRenderer.cs (3)
147
borderColor = flatAppearance.BorderColor.
IsEmpty
245
Color hoverColor = !flatAppearance.MouseOverBackColorCore.
IsEmpty
250
Color pressedColor = !flatAppearance.MouseDownBackColorCore.
IsEmpty
System\Windows\Forms\Rendering\Button\PopupButtonKeyCapRenderer.cs (1)
339
if (!palette.TextOutline.
IsEmpty
)
System\Windows\Forms\Rendering\TextExtensions.cs (2)
69
using var textColor = foreColor.
IsEmpty
? default : new SetTextColorScope(hdc, foreColor);
72
BACKGROUND_MODE newBackGroundMode = (backColor.
IsEmpty
|| backColor == Color.Transparent)
System\Windows\Forms\ToolTip\ToolTip.cs (1)
244
if (value.
IsEmpty
)
System.Windows.Forms.Design (3)
System\ComponentModel\Design\DesignerActionPanel.EditorPropertyLine.FlyoutDialog.cs (1)
38
if (!borderColor.
IsEmpty
)
System\Windows\Forms\Design\DocumentDesigner.cs (2)
133
if (value.
IsEmpty
)
1307
if (!ShadowProperties.Contains(nameof(BackColor)) || ((Color)ShadowProperties[nameof(BackColor)]).
IsEmpty
)