json class : IsNull(string) method
Description
Gets a value indicating whether a value corresponding to the member name is null.
Syntax
jsonInstance.IsNull(string memberName)
Arguments
| Class | Name | Description |
| string | memberName | A member name. |
Return value
| Class | Description |
| bool | A value indicating whether a value is null. |
Sample code
| 1: | json jsonIns = new json("{@name@:@suzuki@,@age@:1,@address@:null}".Replace("@","".DQ)); |
| 2: | bool isnull = jsonIns.IsNull("name"); // false |
| 3: | isnull = jsonIns.IsNull("age"); // false |
| 4: | isnull = jsonIns.IsNull("address"); // true |
Notes
If the instance is an JSON array, an exception is raised.
If there is no member corresponding to the member name, an exception is raised.
Only members that are direct children are searched.
Returns true if a value corresponding to the member name is null. Otherwise it returns false.
Links for reference
None