public string VariableName { get; }

Public ReadOnly Property VariableName As String

//Check whether the event is raised to the required field:
if (e.VariableName == "Categories")
{

Console.WriteLine(e.VariableName + " " + location);

{
    if (e.VariableName == "IMAGE")
    {

}
switch (e.VariableName) {
    case "Weather":

}
switch (e.VariableName)
{

'Check whether the event is raised to the required field:
If e.VariableName = "Categories" Then
    'Provide the data source for the next document part:

Dim location As String = e.Arguments(0).Value.ToString()
Console.WriteLine(e.VariableName & " " & location)
If(Equals(location.Trim(), String.Empty)) OrElse location.Contains("<") Then

Private Sub WordProcessor_OnCalculateDocumentVariable(sender As Object, e As CalculateDocumentVariableEventArgs)
    If e.VariableName = "IMAGE" Then
        Dim pictureProcessor As New RichEditDocumentServer()

Select Case e.VariableName
    Case "Weather"

Select Case e.VariableName
    Case "Weather"