'Declaration Protected Friend Overrides Sub Validate()
'Usage Dim instance As SumFunction instance.Validate()
protected internal override void Validate()
The Sum function validates the ResultPropertyName property is to make sure that a value has been provided and that it is unique. It also validates the SourcePropertyName property to make sure that a single value, which corresponds to an existing column name, has been provided.
Target Platforms: Windows 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2