arrays and structures - help needed please

internal struct ConstantValue
{
internal DateTime EffectiveFrom;
internal DateTime EffectiveThrough;
internal DateTime DateValue;
internal double DoubleValue;
}

internal struct Constant
{
internal ConstantValue[] Value;
internal String Name;
}
From inside a function, when I try to do the following,
i = 0;

constant.Value[i].EffectiveThrough = new DateTime
(2004,1,1,0,0,0);
I am getting the exception, "object reference not set to
an instance of an object". Please give your valuable
suggestions. Thanks a lot.

[Dilip Krishnan]

You would need to initialize your Value variable.
Something like this... ie constant.Value = new ConstantValue[10];
HTH

an*******@discussions.microsoft.com wrote:

internal struct ConstantValue
{
internal DateTime EffectiveFrom;
internal DateTime EffectiveThrough;
internal DateTime DateValue;
internal double DoubleValue;
}

internal struct Constant
{
internal ConstantValue[] Value;
internal String Name;
}
From inside a function, when I try to do the following,
i = 0;

constant.Value[i].EffectiveThrough = new DateTime
(2004,1,1,0,0,0);
I am getting the exception, "object reference not set to
an instance of an object". Please give your valuable
suggestions. Thanks a lot.

--
Regards,
Dilip Krishnan
MCAD, MCSD.net
dilipdotnet at apdiya dot com

[Jon Skeet [C# MVP]]

<an*******@discussions.microsoft.com> wrote:

internal struct ConstantValue
{
internal DateTime EffectiveFrom;
internal DateTime EffectiveThrough;
internal DateTime DateValue;
internal double DoubleValue;
}

internal struct Constant
{
internal ConstantValue[] Value;
internal String Name;
}
From inside a function, when I try to do the following,
i = 0;

constant.Value[i].EffectiveThrough = new DateTime
(2004,1,1,0,0,0);
I am getting the exception, "object reference not set to
an instance of an object". Please give your valuable
suggestions. Thanks a lot.

You haven't shown anywhere where you've initialised the Value array, eg
a statement like

Value = new ConstantValue[50];

Until you do so, you won't have created an actual array.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too