DevExpress Node Images not working

Question

I am using DevExpress TreeList. I have read this article and followed the steps.

1. Created ImageList and added icons init.
2. TreeList property is set SelectImageList = ImageList
3. TreeList.ImageIndexFieldName = "ImageID"
4. Following DataTable is assigned to TreeList.DataSource

Table is given below

ID   Name   Parent   ImageID
1    Root     0         0
2    Node1    1         1
3    node2    2         2
4    node3    2         2

The Problem is TreeList is showing same icon with each node.

Answer 1

I found the problem in this, problem was in the data type.

While adding columns in datatable just mention its type.

dt.Columns.Add("Parent", typeof(decimal));
dt.Columns.Add("ImageID", typeof(decimal));