C# treeview，以及路径获取
如图所示treeview新建了几个节点，节点名称如图所示，
现在创建节点双击事件。双击节点，在当前目录的一个叫record的文件下创建和该节点相通名字的txt文件，代码如下所示，
string str = e.Node.Text;
string path1 = @"record";
FileStream fs = new FileStream(path1+"/"+str+".txt",FileMode.Create,FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
fs.Close();
button事件去读取写入txt文档，
如果我再要去读取刚刚创建的txt文档，往里面写入内容
string path = ？？ //获取这个名字的txt文档的路径该怎么写？
StreamWriter sw = new StreamWriter(path, true);
sw.WriteLine(“testcontent”);
sw.Close();
TreeNode select_node;
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
//treeView1.SelectedNode.Level 获取节点的深度，比如节点11的深度为2
//treeView1.SelectedNode.Index 获取节点在当前集合的索引，比如节点11在节点1的第0个位置
select_node = treeView1.SelectedNode;
string str = e.Node.Text;
string path1 = @"record";
FileStream fs = new FileStream(path1 + "/" + str + ".txt", FileMode.Create, FileAccess.Write);
fs.Close();
}
private void button1_Click(object sender, EventArgs e)
{
string path1 = @"record";
FileStream fs = new FileStream(path1 + "/" + select_node.Text + ".txt", FileMode.Create, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.Write(textBox1.Text);
sw.Flush();
fs.Close();
}
答案够详细了吧，给分给分啦。
你要做个复杂点文件目录的话，就可以用到treeView1.SelectedNode.Level和treeView1.SelectedNode.Index
可以判断一下，如果存在Node1.txt,读它，写数据进去，这样写6个if就可以了，目前就想到这个办法，有点麻烦，
具体代码
```TreeNode select_node;
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
//treeView1.SelectedNode.Level 获取节点的深度，比如节点11的深度为2
//treeView1.SelectedNode.Index 获取节点在当前集合的索引，比如节点11在节点1的第0个位置
select_node = treeView1.SelectedNode;
string str = e.Node.Text;
string path1 = @"record";
FileStream fs = new FileStream(path1 + "/" + str + ".txt", FileMode.Create, FileAccess.Write);
fs.Close();
}
private void button1_Click(object sender, EventArgs e)
{
string path1 = @"record";
FileStream fs = new FileStream(path1 + "/" + select_node.Text + ".txt", FileMode.Create, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.Write(textBox1.Text);
sw.Flush();
fs.Close();
}
实际截图