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How to bind data to treeview with ID and parent id?

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Visual Basic .NET

How to bind data to treeview with ID and parent id?

Shweta Maliye

7yAsked May 14, 2019, 12:12 AM2.2kVisual Basic .NET

How to bind data to treeview with ID and parent id?

1 Reply

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Rajanikant Hawaldar7y ago
Accepted answer
Hi Shwetha ,

try this work great,done using C# windaw application,

create sample like this, debug line by line then you will understand.
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Windows.Forms;
namespace TreeviewBindingWithID
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
FillTreeView();
}
private class ItemInfo
{
public int ID;
public int ParentID;
public string Name;
}
private void FillTreeView()
{
var items = new List()
{
new ItemInfo(){ID = 1, ParentID = 4, Name = "A"},
new ItemInfo(){ID = 2, ParentID = 1, Name = "A1"},
new ItemInfo(){ID = 3, ParentID = 0, Name = "B"},
new ItemInfo(){ID = 4, ParentID = 0, Name = "C"},
new ItemInfo(){ID = 5, ParentID = 1, Name = "A2"},
new ItemInfo(){ID = 6, ParentID = 3, Name = "B1"},
};
FillNode(items, null);
}
private void FillNode(List items, TreeNode node)
{
var parentID = node != null ? (int)node.Tag : 0;
var nodesCollection = node != null ? node.Nodes : treeView1.Nodes;
foreach (var item in items.Where(i => i.ParentID == parentID))
{
var newNode = nodesCollection.Add(item.Name, item.Name);
newNode.Tag = item.ID;
FillNode(items, newNode);
}
}
}
}
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