8 references to IsNull
System.Windows.Forms (6)
System\Windows\Forms\Accessibility\AccessibleObjectExtensions.cs (1)
165
if (name.
IsNull
)
System\Windows\Forms\ActiveX\AxHost.cs (1)
2370
if (hr.Succeeded && !name.
IsNull
)
System\Windows\Forms\ComponentModel\COM2Interop\COM2IVsPerPropertyBrowsingHandler.cs (2)
65
if (hr == HRESULT.S_OK && !helpString.
IsNull
)
137
if (hr == HRESULT.S_OK && !name.
IsNull
)
System\Windows\Forms\ComponentModel\COM2Interop\ComNativeDescriptor.cs (1)
77
if (propertyBrowsing.Value->GetClassName(&className).Succeeded && !className.
IsNull
)
System\Windows\Forms\Controls\ComboBox\ComboBox.ComboBoxChildTextUiaProvider.cs (1)
73
return name.
IsNull
? new(string.Empty) : name;
System.Windows.Forms.Primitives (2)
System\Windows\Forms\Automation\UiaTextRange.cs (1)
288
if (text.
IsNull
)
Windows\Win32\System\Com\StandardDispatch.cs (1)
135
=> bstrName.
IsNull
|| pid is null ? HRESULT.E_POINTER : GetDispID(bstrName, grfdex, pid);