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IExpression Interface (ArcObjects .NET 10.5 SDK)
ArcObjects Help for .NET developers > ArcObjects namespaces > Carto > ESRI.ArcGIS.Carto > Interfaces > IE > IExpression Interface (ArcObjects .NET 10.5 SDK)
ArcObjects Library Reference (Carto)  

IExpression Interface

Provides access to members that control expression calculation.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Members

Description
Method Calculate Perform the calculation.
Read/write property Expression Expression string applied to the field of each row in the cursor.
Method IsValid Check the validity of the expression.