Hi Max,

I have a scenario to color the each Bar of Gantt chart individually. iam able to do it now.

But problem is i need to show the legend depending on the color i am giving to the bars.

 please help me with code to give custom colors for the legend.

Regards

Shiju

Thanks Max for the code. It is very helpful. i need to try the code myself. I have one more query.

Can i control the legend items. i dont want the legend to get generated from the data iam binding.

 i want to create some custom legend items of my own.

 It would be vewry helpful if you can send some code samaples for the same.

Regards

shiju

You can use FillSceneGraph to replace the legend with custom items.

List<Primitive> legendItems = new List<Primitive>();
Box legendBox = null;

//find the legend bounds
foreach (Primitive p in e.SceneGraph)
{
   if (legendBox == null && p is Box && p.Path != null && p.Path.ToLower().IndexOf("legend") != -1)
   {
      legendBox = p as Box;
   }

   if (p.Path != null && p.Path.ToLower().IndexOf("legend") != -1)
   {
      legendItems.Add(p);
   }
}

//clean up existing legend items
foreach (Primitive p in legendItems)
{
   e.SceneGraph.Remove(p);
}

//add custom items
if (legendBox != null)
{
   Box legendItem = new Box(new Rectangle(legendBox.rect.X + 5, legendBox.rect.Y + 5, 20, 20));
   legendItem.PE.Fill = Color.Blue;
   e.SceneGraph.Add(legendItem);

   Text legendItemText = new Text(new Point(legendItem.rect.Right + 5, legendBox.rect.Y + legendItem.rect.Height/2 + 5), "legendItemText");
   e.SceneGraph.Add(legendItemText);
}

I'm currently using an evaluation version to determine if it meets a customer's needs and I'm trying to color boxes individually in the FillSceneGraph event based on some data in the data source.

I took the above code and edited slightly to try and get at the underlying Row to check a value.

My code looks like so:

if (ganttItem != null && ganttItem.Layer != null)
            {
                int rowIndex = ganttItem.Row;
               
                DataRow r = data.Rows[rowIndex];

                if ((int)r["ID"] == 1)
                {
                    ganttItem.PE.Fill = System.Drawing.Color.Red;
                }
            }

However, the gantItem.Row is always 0 and thus I always go to the same row to check the ID.

Am I missing something obvious?  Should I be able to get at the row item at that point in the workflow?

Thanks,

John

For gantt charts, the row represents the series, while the column represents the task. If you only have one series, then you will always have a row of 0. I do, however, get row numbers other than 0, when I have multiple series in my data. What does your data look like?

I didn't quite understand the Row/Column usage in the event and eventually found my answer on these forums.  I was trying to link the row value to an index in the underyling data source which was the source of my confusion.

I ended up getting around this by building the GanttDataSource by adding in the Series, Items, and TimeEntry objects based on my business objects.  This allowed me to set the color of the TimeEntry objects individually based on business logic.