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IField Interface (ArcObjects .NET 10.7 SDK)
ArcObjects Help for .NET developers > ArcObjects Help for .NET developers > ArcObjects namespaces > Geodatabase > ESRI.ArcGIS.GeoDatabase > Interfaces > IF > IField Interface
ArcGIS Developer Help

IField Interface

Provides access to members that return information about the field. Note: the IField interface has been superseded by IField2. Please consider using the more recent version.

Product Availability

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

Description

The field object represents a column in a table. A field has many properties, the most obvious ones being its name and its datatype. The esriFieldType enumeration lists the possible datatypes.

Members

Name Description
Read-only property AliasName The alias name of the field.
Method CheckValue Indicates if the value is valid given the field definition.
Read-only property DefaultValue The default value of the field.
Read-only property Domain The default domain of the field.
Read-only property DomainFixed Indicates if the field's domain is fixed.
Read-only property Editable Indicates if the field is editable.
Read-only property GeometryDef The geometry definition for the field if IsGeometry is TRUE.
Read-only property IsNullable Indicates if the field can contain null values.
Read-only property Length The maximum length, in bytes, for values described by the field.
Read-only property Name The name of the field.
Read-only property Precision The precision for field values.
Read-only property Required Indicates if the field is required.
Read-only property Scale The scale for field values.
Read-only property Type The type of the field.
Read-only property VarType The VARTYPE of the field (e.g. VT_I4).

Classes that implement IField

Classes Description
Field Esri Field object.

Remarks

When you create a field of type esriFieldTypeSingle, esriFieldTypeDouble or esriFieldTypeInteger, and specify zero for precision and scale, the geodatabase will attempt to create a binary type field if the underlying database supports it. Personal geodatabases support only binary type fields.  ArcGIS ignores precision and scale of binary type fields.

The length property of a field has meaning only for esriFieldTypeString fields. The length property for all other field types is not important and will be ignored if specified.

.NET Samples

Find the closest intersection from a point Create a custom raster type Create a custom raster type from the ground up for DMCII data Export any network analysis class to a text file Calculate area geoprocessing function tool Geoprocessing field mapping Displaying MapTips in the MapControl Single line address geocoding StreetMap routing Retrieve a color ramp from the SymbologyControl Timestamper class extension Timestamper class extension Timestamper class extension