DbDataReader.FieldCount Property

Reference

Definition

Namespace:: System.Data.Common

Assembly:: System.Data.Common.dll

Assemblies:: netstandard.dll, System.Data.Common.dll

Assembly:: System.Data.dll

Assembly:: netstandard.dll

Source:: DbDataReader.cs

Source:: DbDataReader.cs

Source:: DbDataReader.cs

Important

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When overridden in a derived class, gets the number of columns in the current row.

public:
 abstract property int FieldCount { int get(); };

public abstract int FieldCount { get; }

member this.FieldCount : int

Public MustOverride ReadOnly Property FieldCount As Integer

Property Value

Int32

The number of columns in the current row.

Implements

FieldCount

Exceptions

NotSupportedException

There is no current connection to an instance of SQL Server.

Remarks

Includes hidden fields. Use VisibleFieldCount to exclude hidden fields.

Applies to

Продукт	Версии
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

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