IConvertible.cs source code in C# .NET

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                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / IConvertible.cs / 1305376 / IConvertible.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
namespace System {
 
    using System.Diagnostics.Contracts; 
    using System.Threading;
 
    // The IConvertible interface represents an object that contains a value. This
    // interface is implemented by the following types in the System namespace:
    // Boolean, Char, SByte, Byte, Int16, UInt16, Int32, UInt32, Int64, UInt64,
    // Single, Double, Decimal, DateTime, TimeSpan, and String. The interface may 
    // be implemented by other types that are to be considered values. For example,
    // a library of nullable database types could implement IConvertible. 
    // 
    // Note: The interface was originally proposed as IValue.
    // 
    // The implementations of IConvertible provided by the System.XXX value classes
    // simply forward to the appropriate Value.ToXXX(YYY) methods (a description of
    // the Value class follows below). In cases where a Value.ToXXX(YYY) method
    // does not exist (because the particular conversion is not supported), the 
    // IConvertible implementation should simply throw an InvalidCastException.
 
    [CLSCompliant(false)] 
    [System.Runtime.InteropServices.ComVisible(true)]
    [ContractClass(typeof(IConvertibleContract))] 
    public interface IConvertible
    {
        // Returns the type code of this object. An implementation of this method
        // must not return TypeCode.Empty (which represents a null reference) or 
        // TypeCode.Object (which represents an object that doesn't implement the
        // IConvertible interface). An implementation of this method should return 
        // TypeCode.DBNull if the value of this object is a database null. For 
        // example, a nullable integer type should return TypeCode.DBNull if the
        // value of the object is the database null. Otherwise, an implementation 
        // of this method should return the TypeCode that best describes the
        // internal representation of the object.

        TypeCode GetTypeCode(); 

        // The ToXXX methods convert the value of the underlying object to the 
        // given type. If a particular conversion is not supported, the 
        // implementation must throw an InvalidCastException. If the value of the
        // underlying object is not within the range of the target type, the 
        // implementation must throw an OverflowException.  The
        // IFormatProvider will be used to get a NumberFormatInfo or similar
        // appropriate service object, and may safely be null.
 
        bool ToBoolean(IFormatProvider provider);
        char ToChar(IFormatProvider provider); 
        sbyte ToSByte(IFormatProvider provider); 
        byte ToByte(IFormatProvider provider);
        short ToInt16(IFormatProvider provider); 
        ushort ToUInt16(IFormatProvider provider);
        int ToInt32(IFormatProvider provider);
        uint ToUInt32(IFormatProvider provider);
        long ToInt64(IFormatProvider provider); 
        ulong ToUInt64(IFormatProvider provider);
        float ToSingle(IFormatProvider provider); 
        double ToDouble(IFormatProvider provider); 
        Decimal ToDecimal(IFormatProvider provider);
        DateTime ToDateTime(IFormatProvider provider); 
        String ToString(IFormatProvider provider);
        Object ToType(Type conversionType, IFormatProvider provider);
    }
 
    [ContractClassFor(typeof(IConvertible))]
    internal abstract class IConvertibleContract : IConvertible 
    { 
        #region IConvertible Members
 
        [Pure]
        TypeCode IConvertible.GetTypeCode()
        {
            throw new NotImplementedException(); 
        }
 
        bool IConvertible.ToBoolean(IFormatProvider provider) 
        {
            throw new NotImplementedException(); 
        }

        char IConvertible.ToChar(IFormatProvider provider)
        { 
            throw new NotImplementedException();
        } 
 
        sbyte IConvertible.ToSByte(IFormatProvider provider)
        { 
            throw new NotImplementedException();
        }

        byte IConvertible.ToByte(IFormatProvider provider) 
        {
            throw new NotImplementedException(); 
        } 

        short IConvertible.ToInt16(IFormatProvider provider) 
        {
            throw new NotImplementedException();
        }
 
        ushort IConvertible.ToUInt16(IFormatProvider provider)
        { 
            throw new NotImplementedException(); 
        }
 
        int IConvertible.ToInt32(IFormatProvider provider)
        {
            throw new NotImplementedException();
        } 

        uint IConvertible.ToUInt32(IFormatProvider provider) 
        { 
            throw new NotImplementedException();
        } 

        long IConvertible.ToInt64(IFormatProvider provider)
        {
            throw new NotImplementedException(); 
        }
 
        ulong IConvertible.ToUInt64(IFormatProvider provider) 
        {
            throw new NotImplementedException(); 
        }

        float IConvertible.ToSingle(IFormatProvider provider)
        { 
            throw new NotImplementedException();
        } 
 
        double IConvertible.ToDouble(IFormatProvider provider)
        { 
            throw new NotImplementedException();
        }

        Decimal IConvertible.ToDecimal(IFormatProvider provider) 
        {
            throw new NotImplementedException(); 
        } 

        DateTime IConvertible.ToDateTime(IFormatProvider provider) 
        {
            throw new NotImplementedException();
        }
 
        [Pure]
        String IConvertible.ToString(IFormatProvider provider) 
        { 
            Contract.Ensures(Contract.Result() != null);
            throw new NotImplementedException(); 
        }

        Object IConvertible.ToType(Type conversionType, IFormatProvider provider)
        { 
            throw new NotImplementedException();
        } 
 
        #endregion
    } 


}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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IConvertible.cs source code in C# .NET

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