Dynamics Community Forum Thread Details

my plugin is working only on profiling ,if triger generally i'm getting an error like this "Object reference not set to an instance of an object" what is the issue can any one help me here?

THIS IS MY CODE

MY IS BELOW:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;

namespace ActionStepsExecutionStatusDecisionPlugin
{
public class ActionStepsExecution : IPlugin
{
public void Execute(IServiceProvider serviceProvider)
{
IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
IOrganizationServiceFactory servicefactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
IOrganizationService service = servicefactory.CreateOrganizationService(context.UserId);
try
{
if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
{
Entity _target = (Entity)context.InputParameters["Target"];
EntityReference regarding = null;

QueryExpression querytask = new QueryExpression(_target.LogicalName);
querytask.Criteria.AddCondition("activityid", ConditionOperator.Equal, _target.Id);
querytask.ColumnSet = new ColumnSet("regardingobjectid");
EntityCollection task_entity = service.RetrieveMultiple(querytask);
foreach (Entity task_res in task_entity.Entities)
{
regarding = (EntityReference)task_res.Attributes["regardingobjectid"]; //ActionSteps

}

if (regarding.LogicalName == "qbd_actionsteps")
{
string InputField = string.Empty;
Entity action_entity = service.Retrieve(regarding.LogicalName, regarding.Id, new ColumnSet("qbd_actionstepssource"));//Retrive source field schema name
if (action_entity.Contains("qbd_actionstepssource"))
{
InputField = action_entity.GetAttributeValue<string>("qbd_actionstepssource");
}
else
{
throw new InvalidPluginExecutionException("Action Steps Source cannot be null");
}

EntityReference parent_entityref = null;

#region Get Total Task Count
QueryExpression querycount = new QueryExpression(_target.LogicalName);
querycount.Criteria.AddCondition("regardingobjectid", ConditionOperator.Equal, regarding.Id);
querycount.ColumnSet = new ColumnSet("subject");
EntityCollection taskcount = service.RetrieveMultiple(querycount);
int task_count = taskcount.Entities.Count;
#endregion

#region Task Loop - Action Step Status Update
QueryExpression query_as = new QueryExpression(regarding.LogicalName);//ActionSteps
query_as.Criteria.AddCondition("qbd_actionstepsid", ConditionOperator.Equal, regarding.Id);
query_as.ColumnSet = new ColumnSet("qbd_name", "qbd_actionsteptaskstatus", InputField);//qbd_actionstepsidcc
EntityCollection asfetch = service.RetrieveMultiple(query_as);
foreach (Entity actionsteps in asfetch.Entities)
{
parent_entityref = (EntityReference)actionsteps.Attributes[InputField];

#fields update
}
}
#endregion

#region Action Step Loop - Parent Entity Status Update
Entity parent_entity = service.Retrieve(parent_entityref.LogicalName, parent_entityref.Id, new ColumnSet("qbd_name", "qbd_executionstatus"));//Retrive Parent

QueryExpression query_actions = new QueryExpression(regarding.LogicalName);//ActionSteps
query_actions.Criteria.AddCondition(InputField, ConditionOperator.Equal, parent_entityref.Id);
query_actions.ColumnSet = new ColumnSet("qbd_name", "qbd_actionsteptaskstatus", InputField);
EntityCollection actionsfetch = service.RetrieveMultiple(query_actions);
foreach (Entity all_actionsteps in actionsfetch.Entities)
{

#fields update
}
#endregion

}
}
}
catch (Exception ex)
{
throw new InvalidPluginExecutionException(ex.Message);
}
}
}
}

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