59 references to IsDBNull
PresentationFramework (2)
System\Windows\Data\BindingExpression.cs (1)
2160
if (Convert.
IsDBNull
(value))
System\Windows\Data\BindingExpressionBase.cs (1)
1591
if (Convert.
IsDBNull
(value))
System.Data.Common (40)
System\Data\Common\DataRecordInternal.cs (1)
298
return (null == o || Convert.
IsDBNull
(o));
System\Data\Common\DBCommandBuilder.cs (1)
859
if (!row.AllowDBNull && (null == currentValue || Convert.
IsDBNull
(currentValue)))
System\Data\Common\DBSchemaRow.cs (17)
72
if (!Convert.
IsDBNull
(value))
86
if (!Convert.
IsDBNull
(value))
101
if (!Convert.
IsDBNull
(value))
117
if (!Convert.
IsDBNull
(value))
134
if (!Convert.
IsDBNull
(value))
150
if (!Convert.
IsDBNull
(value))
166
if (!Convert.
IsDBNull
(value))
182
if (!Convert.
IsDBNull
(value))
198
if (!Convert.
IsDBNull
(value))
214
if (!Convert.
IsDBNull
(value))
230
if (!Convert.
IsDBNull
(value))
246
if (!Convert.
IsDBNull
(value))
262
if (!Convert.
IsDBNull
(value))
278
if (!Convert.
IsDBNull
(value))
294
if (!Convert.
IsDBNull
(value))
311
if (!Convert.
IsDBNull
(value))
327
if (!Convert.
IsDBNull
(value))
System\Data\ProviderBase\SchemaMapping.cs (1)
464
if ((null != readerValue) && !Convert.
IsDBNull
(readerValue))
System\Xml\DataPointer.cs (3)
131
if (!_doc.IsNotMapped(c) && (c.ColumnMapping == MappingType.Attribute) == fAttribute && (fNulls || !Convert.
IsDBNull
(row[c, rowVersion])))
573
if (!Convert.
IsDBNull
(value))
853
Debug.Assert(!Convert.
IsDBNull
(row[_column, rowVersion]));
System\Xml\XmlDataDocument.cs (12)
678
if (!Convert.
IsDBNull
(value))
1374
return (Convert.
IsDBNull
(value));
1413
if (col.ColumnMapping == MappingType.SimpleContent && Convert.
IsDBNull
(value) && !rowElement.IsFoliated)
1425
if (Convert.
IsDBNull
(row[col, DataRowVersion.Current]))
1451
if (Convert.
IsDBNull
(value))
1489
if (Convert.
IsDBNull
(value))
1503
if (!fFound && !Convert.
IsDBNull
(value))
1529
if (Convert.
IsDBNull
(value))
1553
if (!fFound && !Convert.
IsDBNull
(value))
1749
if (childCol == null || relation == null || Convert.
IsDBNull
(child[childCol]))
2136
if (Convert.
IsDBNull
(proposedValue) && !Convert.
IsDBNull
(currentValue))
System\Xml\XPathNodePointer.cs (5)
331
if (!Convert.
IsDBNull
(value))
370
if (!Convert.
IsDBNull
(value))
555
if (!_doc.IsNotMapped(c) && (c.ColumnMapping == MappingType.Attribute) == fAttribute && !Convert.
IsDBNull
(row[c, rowVersion]))
575
if (!_doc.IsNotMapped(c) && (c.ColumnMapping == MappingType.Attribute) == fAttribute && !Convert.
IsDBNull
(row[c, rowVersion]))
1661
Debug.Assert(!Convert.
IsDBNull
(row[_column, rowVersion]));
System.Data.Odbc (15)
System\Data\Odbc\OdbcDataReader.cs (4)
629
return Convert.
IsDBNull
(GetValue(i)); // case 1, cache the value
639
return Convert.
IsDBNull
(cachedObj);
650
return Convert.
IsDBNull
(GetValue(i));
1728
Debug.Assert(_dataCache == null || !Convert.
IsDBNull
(_dataCache[i]), "Cannot call GetData without checking for cache first!");
System\Data\Odbc\OdbcParameter.cs (11)
341
if ((null == value) || Convert.
IsDBNull
(value))
480
if ((null == value) || Convert.
IsDBNull
(value))
552
if ((null == value) || (value is decimal) || Convert.
IsDBNull
(value))
682
if ((null != value) && !Convert.
IsDBNull
(value))
696
if ((null != value) && !Convert.
IsDBNull
(value))
740
if (!Convert.
IsDBNull
(value) && value is string)
967
if ((null != Value) && !Convert.
IsDBNull
(Value))
976
if ((typemap != _typemap) && (null != Value) && !Convert.
IsDBNull
(Value) && (Value.GetType() != _typemap!._type))
990
if ((null != value) && !Convert.
IsDBNull
(value))
1021
if ((null == value) || Convert.
IsDBNull
(value))
1059
else if (Convert.
IsDBNull
(value))
System.Windows.Forms (2)
System\Windows\Forms\ComponentModel\COM2Interop\COM2IManagedPerPropertyBrowsingHandler.cs (1)
151
if (!Convert.
IsDBNull
(value) && value is not null)
System\Windows\Forms\ComponentModel\COM2Interop\ComNativeDescriptor.cs (1)
338
if (propertyValue is not null && !Convert.
IsDBNull
(propertyValue))