While deserializing how do I check whether a name is available in the deserialized info?

This is usually an issue when a newer version introduces newer names, then the older version will not serialize property due to the absence of certain names. For example, this code will fail, sometimes:

protected MyClassConstructor(SerializationInfo info, StreamingContext context)
{
	...
	// This might fail if MyProp was added in a newer version and you are serializing an older version.
	this.MyProp = info.GetBoolean('MyProp');
}

To avoid such conflicts, you could insert version nos. into the serialized info. and during deserialization check for a name only when a particular version is being deserialized. Or you could instead parse through the available info in the SerializationInfo list as follows:

[C#]
protected MyClassConstructor(SerializationInfo info, StreamingContext context)
{
	foreach(SerializationEntry entry in info)
	{
		switch(entry.Name)
		{
			case 'MyProp':
			// This will make sure that older versions without the MyProp name will also deserialize without any problems
			this.MyProp = (bool)entry.Value;
			break;
			...
		}
	}

}

[VB.Net]
Protected MyClassConstructor(ByVal info As SerializationInfo, ByVal context As StreamingContext) As Protected
	Dim entry As SerializationEntry
	For Each entry In info
		Select Case entry.Name
			Case 'MyProp'
			’ This will make sure that older versions without the MyProp name will also deserialize without any problems
			Me.MyProp = (Boolean)entry.Value
			Exit For
 
		End Select
	Next
 
End Function