#JoinFieldRegex
##About
Summary: Gets or sets the regular expression used for filtering fields that can be used to join tables on the Datasources Tab of the Izenda.Web.UI.AdHocReportDesigner. If the name of a column matches this expression then it will be excluded from the dropdown used to select join fields.
Data Type: System.String
Accepted Values:
Default Value: String.Empty
Impacted Features:
Purpose:
Usage:
Caveats:
##Code Samples ###Global.asax (C♯)
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###Global.asax (VB.NET)
```visualbasic
##Alternate Usage:
##Screenshots
