DBNull Methods
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
The DBNull type exposes the following members.
| Name | Description | |
|---|---|---|
|
Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
|
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
|
GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
GetTypeCode | Gets the TypeCode value for DBNull. |
|
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ToString | Returns an empty string (String.Empty). (Overrides Object.ToString.) |
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ToString(IFormatProvider) | Returns an empty string using the specified System.IFormatProvider. |
| Name | Description | |
|---|---|---|
|
IConvertible.ToBoolean | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToByte | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToChar | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToDateTime | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToDecimal | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToDouble | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToInt16 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToInt32 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToInt64 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToSByte | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToSingle | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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IConvertible.ToType | Infrastructure. Converts the current DBNull object to the specified type. |
|
IConvertible.ToUInt16 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToUInt32 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
|
IConvertible.ToUInt64 | Infrastructure. This conversion is not supported. Attempting to make this conversion throws an InvalidCastException. |
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