IsFieldAllowedInFilters

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#IsFieldAllowedInFilters

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##About

This method allows for custom handling of whether specific fields can be used in filters or not.

Note: Overriding this method with custom behavior will cause certain settings to get ignored, such as [[HiddenColumns|FAQ/Izenda-API-Tip-Hidden-Columns]] and [[FiltersRegex|API/CodeSamples/FiltersRegex]].

##C♯ Example

```csharp
public override bool IsFieldAllowedInFilters(string fullColumnName, string columnName)
{
    switch (columnName)
    {
        case "OrderID":
        case "CustomerID":
        case "EmployeeID":
        case "ShipperID":
            return false;
        default:
            return true;
    }
}
```

##VB.NET Example

```visualbasic
Public Overrides Function IsFieldAllowedInFilters(fullColumnName As String, columnName As String) As Boolean
    Select Case columnName
        Case "OrderID", "CustomerID", "EmployeeID", "ShipperID"
            Return False
        Case Else
            Return True
    End Select
End Function
```

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