private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
TreeView treeView = sender as TreeView;
ListView list = new ListView();
Project1Entities entities = new Project1Entities();
var sem = entities.Seminars;
var lek = entities.Lektors;
listView1.Items.Clear();
if (treeView1.SelectedNode.Text == "Seminars")
{
foreach (var item in lek)
{
listView1.Items.Add(item.LektorName);
}
}
foreach (var item in sem)
{
var semlek = entities.SeminarsAndLektors;
if (treeView1.SelectedNode.Text == item.SeminarName)
{
foreach (var itemn in semlek)
{
if (itemn.SeminarsId == item.Id)
{
listView1.Items.Add(itemn.LektorsName);
}
}
}
}
}
public void bindtreeview()
{
var kor = "Seminars";
TreeNode rootnode = new TreeNode(kor);
Project1Entities data1 = new Project1Entities();
var child = data1.Seminars;
foreach (var item in child)
{
TreeNode childNode = new TreeNode(item.SeminarName);
var sal = data1.SeminarsAndLektors;
foreach (var itemn in sal)
{
TreeNode childno = new TreeNode(itemn.LektorsName);
if (itemn.SeminarsId == item.Id)
{
childNode.Nodes.Add(childno);
}
}
rootnode.Nodes.Add(childNode);
}
treeView1.Nodes.Add(rootnode);
}
private void Form2_Load(object sender, EventArgs e)
{
project1 = new Project1Entities();
lektorsBindingSource.DataSource = project1.Lektors.ToList();
seminarsBindingSource.DataSource = project1.Seminars.ToList();
}