Object reference not set in static get and set function

Question

1.00/5 (1 vote)

See more:

.NET4.5

In my Static class code:

C#

public static class Maintanance
    {
private static bool haveSet = false;
        public static bool HaveSet
        {
            get
            {
                return haveSet;
            }
            set
            {
                haveSet = value;
            }
        }
}

In calling class:

C#

private void mskPutTime_KeyPress(object sender, KeyPressEventArgs e)
        {
Maintanance.HaveSet = true;
}

I am getting Null Reference exception while I wanna set the value.

What I have tried:

C#

private void mskPutTime_KeyPress(object sender, KeyPressEventArgs e)
        {
Maintanance.HaveSet = true;
}

Posted 23-Aug-16 21:48pm

Member 10261487

Updated 24-Aug-16 7:14am

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Comments

[no name] 24-Aug-16 4:06am

Works fine for me in when calling from a button1_Click(...)

Bernhard Hiller 24-Aug-16 4:11am

Is there any local variable with the name Maintanance also available? Do a right click on it and select "Go to declaration".

Karthik_Mahalingam 24-Aug-16 4:31am

post the full code.

phil.o 24-Aug-16 5:10am

Please post the stack trace also.

Philippe Mori 24-Aug-16 11:46am

There is nothing wrong in the posted code. If you have a problem, then it must be something else. However, we don't have any useful information to help you.

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BillW33 · Answer 1 · 2016-08-24T07:14:00

Put a break point in your code on the line

Maintanance.HaveSet = true;

and see if Maintanance is null, if not trace into the set portion of the HaveSet property and see if the variable haveSet is null. The code you posted has both declared static so they shouldn't be null, but if your actual code does not declare them static then they will be null if you don't instantiate them.