Predecessor

[Gian]

Hi,

is there the possibility to retrieve the predecessor of a task after the predecessor is done in gantt chart?

Best regards

Gian Piero Truccolo

[Vignesh Ramesh]

Hi Gian Piero Truccolo, 

Greetings from Syncfusion. 

We have analyzed your query, but we could not be able to understand what ‘’after the predecessor is done in Gantt chart’’ means. So, could you please provide some more information about your requirement, it will help us to proceed further. 

Regards, 

Vignesh Ramesh. 

[Gian]

Hi,

i exaplain here what i mean.

we don't use gantt grid and the user will create the predecessor in gantt chart.

After creates a predecessor we would like to use this for calculating other data.

So i ask you if exist an event after the action is complete.

Best regards

Gian Piero Truccolo

[Sridevi Sivakumar]

Hi Gian Piero Truccolo,

Thanks for your update.

We have analyzed your requirement and we would like to inform you that you can get the predecessor details in load time with Gantt control Loaded event as per the below code snippet.

Code snippet [XAML]: 

     <gantt:GanttControl x:Name="Gantt" Loaded="Gantt_Loaded" 

                                ItemsSource="{Binding TaskCollection}" 

                                UseAutoUpdateHierarchy="False" 

                                VisualStyle="Metro"> 

        <gantt:GanttControl.TaskAttributeMapping> 

            <gantt:TaskAttributeMapping TaskIdMapping="Id" 

                                                TaskNameMapping="Name" 

                                                StartDateMapping="StDate"  

                                                ChildMapping="ChildTask" 

                                                FinishDateMapping="EndDate" 

                                                DurationMapping="Duration" 

                                                ResourceInfoMapping="Resource" 

                                                ProgressMapping="Complete" 

                                                PredecessorMapping="Predecessor"/> 

        </gantt:GanttControl.TaskAttributeMapping> 

    </gantt:GanttControl> 

[C#]: 

        private void Gantt_Loaded(object sender, RoutedEventArgs e) 

        { 

           var predecessor= ((model.TaskCollection)[0] as Task).ChildTask[1].Predecessor; 

        } 

 

Note : In dynamic time, we don't have event notification support for predecessor changes.

Let us know if you need any further assistance.

Regards,
Sridevi S. 

[Gian]

Hi,

could you add tthe event for the next release?

Best reagards

Gian Piero Truccolo

[Muneesh Kumar G]

Hi Gian Piero Truccolo, 

 

Sorry for the inconvenience caused, 

 

Already our Gantt control has event support to identify the predecessor relation establishment through GanttChart dynamically. You can get the Predecessor by using RelationshipEstablished  event in gantt control. Please find the code snippet below  

 

XAML: 

<syncfusion:GanttControl x:Name="Gantt"  

                         RelationshipEstablished="Gantt_RelationshipEstablished"> 

    <syncfusion:GanttControl.TaskAttributeMapping> 

        … 

    </syncfusion:GanttControl.TaskAttributeMapping> 

</syncfusion:GanttControl> 

 

C#: 

private void Gantt_RelationshipEstablished(object sender, GanttRelationshipEstablishedEventArgs e) 

{ 

    var predecessorCollection = (e.EndTask as TaskDetails).Predecessor; 

} 

 

We hope it helps you. 

 

Thanks, 

Muneesh Kumar G