I'm new to C# and don't have any programming experience. But I've finish a C# basics.
Now I would like to design a simple tree view by adding parent node and child node.
I would like to add a second child for the Second node, I'm quite stuck here and don't know what's next.
Any ideas?
Here is the code:
private void addParentNode_Click(object sender, EventArgs e)
{
string yourParentNode;
yourParentNode = textBox1.Text.Trim();
treeView2.Nodes.Add(yourParentNode);
}
private void addChildNode_Click(object sender, EventArgs e)
{
string yourChildNode;
yourChildNode = textBox1.Text.Trim();
treeView2.Nodes[0].Nodes.Add(yourChildNode);
}
Sorry I wasn't clear, I'm not sure if I really need this one here:
//treeView1.BeginUpdate();
//treeView1.Nodes.Clear();
What I'm trying to do, is to add Parent Nodes and child node. In my code, I can add several Parent Nodes, but if I want to add a child node, it only add in the first parent node.
I want that if I add a child node, I want to add it to the second parent or third parent.
In my code I only use one treeview here which names as treeview2
Here is the screenshot
this is how my final code looks like:
Before I put the else, I'm getting an error if I don't select anything. So I made it that way that if there is nothing selected it will add the "child node" to the "default node" or (parent1 node). It seems to work good. Thanks guys;-)
//This is for adding a parent node
private void addParentNode_Click(object sender, EventArgs e)
{
treeView2.BeginUpdate();
string yourParentNode;
yourParentNode = textBox1.Text.Trim();
treeView2.Nodes.Add(yourParentNode);
treeView2.EndUpdate();
}
//This is for adding child node
private void addChildNode_Click(object sender, EventArgs e)
{
if (treeView2.SelectedNode != null)
{
string yourChildNode;
yourChildNode = textBox1.Text.Trim();
treeView2.SelectedNode.Nodes.Add(yourChildNode);
treeView2.ExpandAll();
}
//This is for adding the child node to the default node(parent 1 node)
else
{
string yourChildNode;
yourChildNode = textBox1.Text.Trim();
treeView2.Nodes[0].Nodes.Add(yourChildNode);
}
Additional question: Are there any other ways on how the code be better? Because here, I declare the string "yourChildNode" twice. One in the if and other one in the else, are there any simplification?
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