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How can I debug "Object reference not set to an instance of an object" in VS2013?


How can I debug "Object reference not set to an instance of an object" in VS2013?

By : user7453735
Date : November 22 2020, 11:05 AM
seems to work fine Unfortunately, I never did discover a way to debug issues of this sort in a more general way. I eventually worked around the problem, and then saw it pop up again; following advice someone else tried on another forum, I deleted my packages folder, and had NuGet recreate it, which for whatever reason corrected the issue.
Another time, a solution from this question worked (remove and re-add all roles); sometimes this seemed to require an Azure SDK reinstall and computer restart as well.
code :


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Soap Error: "Server was unable to process request" "Object reference not set to an instance of an object&

Soap Error: "Server was unable to process request" "Object reference not set to an instance of an object&


By : francy
Date : March 29 2020, 07:55 AM
I hope this helps . guys for all your help. I solved the problem.
The 'SoapAction' field in the soap request had the wrong URI
Adding Button Click="...." causes "Object reference not set to an instance of an object" on startup

Adding Button Click="...." causes "Object reference not set to an instance of an object" on startup


By : PRa Kaa SH Syangtan
Date : March 29 2020, 07:55 AM
it should still fix some issue I've run into this issue before, WPF does not seem to like adding events to controls within data templates. I solved it by replacing the event with a command that accomplished the same thing.
Edit:
code :
<DataGrid ItemsSource="{Binding List}" Margin="0,10,0,0" AutoGenerateColumns="False">
    <DataGrid.CommandBindings>
        <CommandBinding Command="commands:Commands.EditURI" CanExecute="CommandBinding_CanExecute" Executed="CommandBinding_Executed"/>
    </DataGrid.CommandBindings>
    <DataGrid.Columns>
        <DataGridTemplateColumn>
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <Button Content="..." Command="controls:Commands.EditURI"/>
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>
public class Commands
{
    public static RoutedCommand EditURI = new RoutedCommand("EditURI", typeof(Commands));
}
    private void CommandBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e)
    {
        e.CanExecute = true;
    }

    private void CommandBinding_Executed(object sender, ExecutedRoutedEventArgs e)
    {
         //Your code to execute
    }
When starting my Azure project in local debug mode, I get "Object reference not set to instance of an object"

When starting my Azure project in local debug mode, I get "Object reference not set to instance of an object"


By : Addicted
Date : March 29 2020, 07:55 AM
I wish this helpful for you Ultimately what I did was delete the cloud service and re-create it, then add in the MVC Web Project. That fixed everything. I have no idea which config file was messed up or how, but this solved the problem.
Got "Object reference not set to an instance of an object." Error when deploy on server, but run/debug locally

Got "Object reference not set to an instance of an object." Error when deploy on server, but run/debug locally


By : user3610632
Date : March 29 2020, 07:55 AM
this one helps. I have a piece of code when I debug/run locally, it works fine. However, when I deploy it on server, I got the following error. , There is a timing issue here:
code :
   mProcessingValidStatesChangeThread.Start();
}

mProcessingValidStatesChangeSignal = new AutoResetEvent(false);
"Object reference not set to an instance of an object" but can't find what object reference is missing in insp

"Object reference not set to an instance of an object" but can't find what object reference is missing in insp


By : sidd1811
Date : March 29 2020, 07:55 AM
this one helps. The questions array is getting created in this line but doesn't get initialized anywhere in the code provided:
code :
public Question[] questions;
unansweredQuestions = questions.ToList<Question>();
currentQuestion = unansweredQuestions[randomQuestionIndex];
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