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DataTableReader.FieldCount Property

Returns the number of columns in the current row.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

public override int FieldCount { get; }

Property Value

Type: System.Int32
When not positioned in a valid result set, 0; otherwise the number of columns in the current row.

Implements

IDataRecord.FieldCount

ExceptionCondition
InvalidOperationException

An attempt was made to retrieve the field count in a closed DataTableReader.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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