Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Common / DbDataReader.cs / 1 / DbDataReader.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Collections; using System.ComponentModel; using System.Data; #if WINFSInternalOnly internal #else public #endif abstract class DbDataReader : MarshalByRefObject, IDataReader, IEnumerable { // V1.2.3300 protected DbDataReader() : base() { } abstract public int Depth { get; } abstract public int FieldCount { get; } abstract public bool HasRows { get; } abstract public bool IsClosed { get; } abstract public int RecordsAffected { get; } virtual public int VisibleFieldCount { // NOTE: This is virtual because not all providers may choose to support // this property, since it was added in Whidbey get { return FieldCount; } } abstract public object this [ int ordinal ] { get; } abstract public object this [ string name ] { get; } abstract public void Close(); [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] public void Dispose() { Dispose(true); } protected virtual void Dispose(bool disposing) { if (disposing) { Close(); } } abstract public string GetDataTypeName(int ordinal); [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] abstract public IEnumerator GetEnumerator(); abstract public Type GetFieldType(int ordinal); abstract public string GetName(int ordinal); abstract public int GetOrdinal(string name); abstract public DataTable GetSchemaTable(); abstract public bool GetBoolean(int ordinal); abstract public byte GetByte(int ordinal); abstract public long GetBytes(int ordinal, long dataOffset, byte[] buffer, int bufferOffset, int length); abstract public char GetChar(int ordinal); abstract public long GetChars(int ordinal, long dataOffset, char[] buffer, int bufferOffset, int length); [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] public DbDataReader GetData(int ordinal) { return GetDbDataReader(ordinal); } IDataReader IDataRecord.GetData(int ordinal) { return GetDbDataReader(ordinal); } virtual protected DbDataReader GetDbDataReader(int ordinal) { // NOTE: This method is virtual because we're required to implement // it however most providers won't support it. Only the OLE DB // provider supports it right now, and they can override it. throw ADP.NotSupported(); } abstract public DateTime GetDateTime(int ordinal); abstract public Decimal GetDecimal(int ordinal); abstract public double GetDouble(int ordinal); abstract public float GetFloat(int ordinal); abstract public Guid GetGuid(int ordinal); abstract public Int16 GetInt16(int ordinal); abstract public Int32 GetInt32(int ordinal); abstract public Int64 GetInt64(int ordinal); [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] virtual public Type GetProviderSpecificFieldType(int ordinal) { // NOTE: This is virtual because not all providers may choose to support // this method, since it was added in Whidbey. return GetFieldType(ordinal); } [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] virtual public Object GetProviderSpecificValue(int ordinal) { // NOTE: This is virtual because not all providers may choose to support // this method, since it was added in Whidbey return GetValue(ordinal); } [ EditorBrowsableAttribute(EditorBrowsableState.Never) ] virtual public int GetProviderSpecificValues(object[] values) { // NOTE: This is virtual because not all providers may choose to support // this method, since it was added in Whidbey return GetValues(values); } abstract public String GetString(int ordinal); abstract public Object GetValue(int ordinal); abstract public int GetValues(object[] values); abstract public bool IsDBNull(int ordinal); abstract public bool NextResult(); abstract public bool Read(); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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