JsonObject.ContainsKey Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Checks whether a key/value pair with a specified key exists in the JSON CLR object type.
Namespace: System.Json
Assembly: System.Json (in System.Json.dll)
Syntax
'Declaration
Public Overrides Function ContainsKey ( _
key As String _
) As Boolean
public override bool ContainsKey(
string key
)
Parameters
- key
Type: System.String
The key to check for.
Return Value
Type: System.Boolean
true if the JSON CLR object contains the key; otherwise, false.
Implements
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | key is nulla null reference (Nothing in Visual Basic). |
Version Information
Silverlight
Supported in: 5, 4, 3
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.