e.Node and e.Node.Tag empty - multi column mode

[Mark Fleet]

Hi,

I am trying to get the value of a clicked node. I am using the NodeMouseClick event but e.Node and e.Node.Tag are always empty regardless of what Node I click.

Below is an example of how I am populating the control:

            String col1 = "All Parent";
            String col2 = "Parent";
            String col3 = "All";
            TreeModel mmodel = new TreeModel();

            treeViewAdv1.UseColumns = true;

            TreeColumn nodeControl11 = new TreeColumn("Text", 100);
            TreeColumn nodeControl21 = new TreeColumn("Text", 200);
            TreeColumn nodeControl31 = new TreeColumn("Text", 150);

            treeViewAdv1.Model = mmodel;
            treeViewAdv1.Columns.Add(nodeControl11);
            treeViewAdv1.Columns.Add(nodeControl21);
            treeViewAdv1.Columns.Add(nodeControl31);

            NodeTextBox ntb = new NodeTextBox();
            ntb.DataPropertyName = "NodeControl1";
            ntb.ParentColumn = nodeControl11;
            NodeTextBox ntb1 = new NodeTextBox();
            ntb1.DataPropertyName = "NodeControl2";
            ntb1.ParentColumn = nodeControl21;
            NodeTextBox ntb2 = new NodeTextBox();
            ntb2.DataPropertyName = "NodeControl3";
            ntb2.ParentColumn = nodeControl31;

            treeViewAdv1.NodeControls.Add(ntb);
            treeViewAdv1.NodeControls.Add(ntb1);
            treeViewAdv1.NodeControls.Add(ntb2);

            treeViewAdv1.BeginUpdate();

            for (int i = 0; i <= 20; i++)
            {

                Node parentnode = new ColumnNode(col1, col2, col3);
                mmodel.Nodes.Add(parentnode);
                for (int j = 0; j <= 2; j++)
                {
                    Node childnode = new ColumnNode(col1, col2, col3);
                    parentnode.Nodes.Add(childnode);
                }
            }

            treeViewAdv1.EndUpdate();

And here is the event which I am using:

        private void treeViewAdv1_NodeMouseClick(object sender, TreeNodeAdvMouseEventArgs e)
        {
            MessageBox.Show(e.Node.Tag.ToString());
            MessageBox.Show(e.Node.ToString());
        }

Does anyone know how I can make this return the node value?

Many thanks

Mark Fleet

[dearjulio]

Hi Mark

I found a solution that works for me. Just set the base.Text to the value you want in the ColumnNode class then you get the row data when using NodeMouseClick.

 private class ColumnNode: Node
        {
            public string NodeControl1="";  // This sould make the DataPropertyName specified in the Node Collection.
            public string NodeControl2 = "";
            public string NodeControl3 = "";
            public ColumnNode(string nodeControl1, string nodeControl2, string nodeControl3)
            {
                NodeControl1 = nodeControl1;
                NodeControl2 = nodeControl2;
                NodeControl3 = nodeControl3;               

                base.Text =  NodeControl1 + "\t" + NodeControl2 + "\t" +  NodeControl3;                              
            }
        }

You also have to use the DataPropertyName = "Text" to retrieve it.