两种模式的资源管理器代码之———— 新建文件夹

1）简洁 简单的代码：

    /***新建文件夹***/#region/***新建文件夹***/
         /**//// <summary>
        /// 新建文件夹
        /// </summary>
        /// <returns></returns>
        public void NewDir()
        {
            if(this._tree.SelectedNode == null)
                return;

            TreeNode node = this._tree.SelectedNode;
            DirectoryInfo dirObj = this.GetDirObj(node);

            if(dirObj.Attributes.ToString().IndexOf("ReadOnly") != -1 || dirObj.Attributes.ToString().IndexOf("System") != -1)
                return;

            TreeNode tmpnode = this.AddSelectedNodeChild("新建文件夹");
            this._tree.SelectedNode = tmpnode;
                    IsNewDir = true;
                    this.RenameSelectedNode();
        }
        #endregion

/***加子节点***/#region/***加子节点***/
        /**//// <summary>
        /// 给选中的节点增加子节点
        /// </summary>
        /// <param name="NodeText"></param>
        /// <returns></returns>
        private TreeNode AddSelectedNodeChild(string NodeText)
        {
            if(_tree.SelectedNode == null)
            {
                return null;
            }
            TreeNode node = new TreeNode(NodeText);
            _tree.SelectedNode.Nodes.Add(node);
            return node;
        }
        #endregion

   private void _tree_AfterLabelEdit(object sender, NodeLabelEditEventArgs e)
        {
            TreeNode node = this._tree.SelectedNode;
            
            if(IsNewDir)
            {
     DirectoryInfo dirObj = this.GetDirObj(node.Parent);
                try
                {
                    if(e.Label == null)
           
                        dirObj.CreateSubdirectory(e.Node.Text);
                   
                    else
                        dirObj.CreateSubdirectory(e.Label);
                }
                catch(Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
                finally
                {
                    IsNewDir = false;
                }
            }
         }
        

2）
在NetDisk下DownLoad.cs中新建文件夹的部分代码：
如果新建文件夹已经存在，则，给新建文件夹编号。检查文件夹命名是否合法，长度 等 。
FoloderControl 是目录操作类。this.pre_Path为程序运行路径。

        //新建
        private void menuItem1_Click(object sender, System.EventArgs e)
        {
     string foldername="新建文件夹";
            GetFolderName(foldername);
            if(!flagNew)
            {
                foldername="新建文件夹";
            } 
            else
            {
                if(this.returnNameId!=-1)
                {
                    foldername="新建文件夹 ("+this.returnNameId.ToString()+")";
                }
            }

          string fpath = this.pre_Path + this.tv_Path.SelectedNode.FullPath + @"\"+foldername;
          TreeNode newNode =new TreeNode(foldername);

            try 
            {
                
                this.tv_Path.SelectedNode.Nodes.Add(newNode);
                this.tv_Path.SelectedNode = newNode;
                oldFolder=this.tv_Path.SelectedNode.Text;


                this.tv_Path.LabelEdit = true;
                if (!newNode.IsEditing)
                    newNode.BeginEdit();
                
            }
            catch (Exception err) 
            {
                MessageBox.Show(this, err.Message, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            oldFolder=this.tv_Path.SelectedNode.Text;
        
        }

    private void  GetFolderName(string name)
        {
            
        ArrayList arr=new ArrayList();
            
            string tempName=name;
            string rootPath=this.pre_Path + this.tv_Path.SelectedNode.FullPath;
            DirectoryInfo di = new DirectoryInfo(rootPath);
            DirectoryInfo[] AllSubDir = di.GetDirectories();
            
            for(int i=0;i<AllSubDir.Length;i++)
            {  

                int index1=AllSubDir[i].Name.IndexOf(name);
                if(index1>=0)
                {
                    tempName=AllSubDir[i].Name.Substring(index1+name.Length);
                    tempName=tempName.Trim();
                    if(tempName!="")
                    {
                        tempName=tempName.Substring(1,tempName.Length-2);
                        arr.Add(tempName);
                        tempName=string.Empty;
                    }
                    else
                    {
          // 有"新建文件夹"
                        flagNew=true;
          this.returnNameId=2;
                    }
                }
                else
                {
                    tempName=string.Empty;
                }
                
                         
            }

            CheckArrayList(arr)    ;
        }

private void tv_Path_AfterLabelEdit(object sender, System.Windows.Forms.NodeLabelEditEventArgs e)
{
    newFolder=e.Node.Text.Trim();
    try
    {
            
        if (e.Label != null)
        {
            newFolder=e.Label;
            if (e.Label.Length > 0)
            {
                    
                string fpath =this.pre_Path+ this.tv_Path.SelectedNode.Parent.FullPath + @"\" + e.Label.Trim();

                if (!NameAvaiCheck(e,e.Label.Trim())) 
                    // 名称合法
                {
                    if (!Directory.Exists(fpath)) 
                    {
                        string oldpath=this.pre_Path + this.tv_Path.SelectedNode.Parent.FullPath + @"\"+oldFolder;
            
                        if(!Directory.Exists(oldpath)) 
                        {

                            FoloderControl.DirectCreat(fpath); 
                        }
                        else
                        {
                            FoloderControl.DirectChange(fpath,oldpath);
                        }
                        e.Node.EndEdit(true);
                        this.txtPath.Text=fpath;
                    }
                    else
                    {
                        e.CancelEdit = true;
                        MessageBox.Show(this,"文件夹名已存在。","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Error);
                        this.tv_Path.LabelEdit = true;
                        e.Node.BeginEdit();
                    }
                }
                
            }
            else
            {
                e.CancelEdit = true;
                MessageBox.Show(this,"文件夹名不能为空。","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Error);
                this.tv_Path.LabelEdit = true;
                e.Node.BeginEdit();
            }
        }
        else   //e.Label==null
        {
            string creatfpath=this.pre_Path + this.tv_Path.SelectedNode.FullPath;

            if(!Directory.Exists(creatfpath)) 
            {
                FoloderControl.DirectCreat(creatfpath); 
            }
            else
            {
                e.CancelEdit = true;
            }
                       
        }
    }
    catch (Exception err)
    {
        e.Node.EndEdit(true);
        MessageBox.Show(this,err.Message,"",MessageBoxButtons.OK,MessageBoxIcon.Error);

    }
    finally
    {
//                this.tv_Path.LabelEdit = false;
    }
}