ChangeType() [4/4]

static ? object System.Convert.ChangeType ( object? value, TypeCode typeCode, IFormatProvider? provider )

inlinestatic

Definition at line 235 of file Convert.cs.

    {
        if (value == null && (typeCode == TypeCode.Empty || typeCode == TypeCode.String || typeCode == TypeCode.Object))
        {
            return null;
        }
        if (!(value is IConvertible convertible))
        {
            throw new InvalidCastException(SR.InvalidCast_IConvertible);
        }
        return typeCode switch
        {
            TypeCode.Boolean => convertible.ToBoolean(provider), 
            TypeCode.Char => convertible.ToChar(provider), 
            TypeCode.SByte => convertible.ToSByte(provider), 
            TypeCode.Byte => convertible.ToByte(provider), 
            TypeCode.Int16 => convertible.ToInt16(provider), 
            TypeCode.UInt16 => convertible.ToUInt16(provider), 
            TypeCode.Int32 => convertible.ToInt32(provider), 
            TypeCode.UInt32 => convertible.ToUInt32(provider), 
            TypeCode.Int64 => convertible.ToInt64(provider), 
            TypeCode.UInt64 => convertible.ToUInt64(provider), 
            TypeCode.Single => convertible.ToSingle(provider), 
            TypeCode.Double => convertible.ToDouble(provider), 
            TypeCode.Decimal => convertible.ToDecimal(provider), 
            TypeCode.DateTime => convertible.ToDateTime(provider), 
            TypeCode.String => convertible.ToString(provider), 
            TypeCode.Object => value, 
            TypeCode.DBNull => throw new InvalidCastException(SR.InvalidCast_DBNull), 
            TypeCode.Empty => throw new InvalidCastException(SR.InvalidCast_Empty), 
            _ => throw new ArgumentException(SR.Arg_UnknownTypeCode), 
        };
    }

References System.SR.Arg_UnknownTypeCode, System.SR.InvalidCast_DBNull, System.SR.InvalidCast_Empty, System.SR.InvalidCast_IConvertible, and System.value.