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Споделяне чрез

IDataRecord.FieldCount Property

  • Reference

Definition

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

Gets the number of columns in the current row.

C# 
public int FieldCount { get; }

Property Value

Int32

When not positioned in a valid recordset, 0; otherwise, the number of columns in the current record. The default is -1.

Remarks

After executing a query that does not return rows (for example, using the ExecuteNonQuery method), FieldCount returns -1.

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 1.1, 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