Question

在我的应用程序中，我想显示一些静态文件（.html，.htm，.txt），这些文件将由用户（管理员）上传，然后我将它们放在指定的目录中。

另外，管理员可以在目录中添加新的文件夹或文件，所以我认为使用asp：treeview显示文件列表是个好主意，我发现了这个：

http://mattberseth.com/blog/2007/07/hwo_to_create_an_aspnet_ajax_s.html

enter image description here

左边的树视图是我想要的，即使它只是读取文件夹并在树中列出，所以我做了一些修复来列出文件夹和文件，我也可以编辑树：

rule.aspx

<form id="form" runat="server">
    <div>
                <table id="tbl" cellpadding="0px" cellspacing="0px">            
                    <tr>
                        <td style="border:solid 1px black" valign="top">
                            <div style="overflow:auto;width:300px;height:450px;">
                                <asp:TreeView 
                                    ID="tvFolders" runat="server" 
                                    OnSelectedNodeChanged="TvFolders_SelectedNodeChanged">
                                    <NodeStyle 
                                        ImageUrl="Img/folder.gif" HorizontalPadding="3px" 
                                        Font-Underline="false" ForeColor="black" />
                                    <SelectedNodeStyle 
                                        Font-Underline="true" Font-Bold="true" />
                                </asp:TreeView> 
                            </div>
                        </td>
                    </tr>
                </table>         
        <br /> 
    </div>
    <!-- The tree editor controls -->
    <div id="addFold" runat="server"></div>
    <div id="addFile" runat="server"></div>
    <div id="deleteFile" runat="server"></div>
    <div id="deleteFold" runat="server"></div>


    <!-- Div used to show the content of the file -->
    <div id="contentDiv" runat="server"></div>
</form>

rule.aspx.cs：

private DbService db=new DbService();
private bool isAdmin;
protected void Page_Load(object sender, EventArgs e)
{
    isAdmin=db.isUserAdmin(Context.Identify.user.name);

    if (!this.IsPostBack)
    {
        string rootFolder = this.Server.MapPath("files/");

        TreeNode rootNode = new TreeNode("Root", rootFolder);
        rootNode.Expanded = true;
        rootNode.Select();
        this.tvFolders.Nodes.Add(rootNode);

        BindDirs(rootFolder, rootNode);

        //set the editor button display or not according the type of current user
        setEditorVisibility();
    }
}

private void setEditorVisibility(){
    //if user select the directory,and he is the admin,so he can add fold/file under this directory,or delete this fold.
    addFold.visibile=deleteFold.visibile=addFile.visibile=isAdmin && Directory.Exist(ootNode.selectedNode.value);

    // if user select the file,and he is the admin,he can delte/update it.
    deleteFile.visibe=isAdmin && File.Exist(ootNode.selectedNode.value);
}
protected void TvFolders_SelectedNodeChanged(object sender, EventArgs args)
{
    setEditorVisibility();

    //now show the content in the contentDiv of the page
    if(File.Exist(ootNode.selectedNode.value)){
        this.contentDiv.innerHtml=xxxx? 
        //here how to make the content of the file displayed in the div?
        //I am sure the type of the file will be .html .htm or .txt.
    }
}

private static void BindDirs(string path, TreeNode treeNode)
{
    if (!string.IsNullOrEmpty(path))
    {
        foreach (string directoryPath in System.IO.Directory.GetDirectories(path))
        {
            System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(directoryPath);
            TreeNode subNode = new TreeNode(directory.Name, directory.FullName);
            treeNode.ChildNodes.Add(subNode);

            // bind sub directories
            BindDirs(directoryPath, subNode);
        }

        //add the file in the tree list
        foreach (string filePath in File.getFiles(path))
        {
            FileInfo info = new FileInfo(filePath);
            TreeNode subNode = new TreeNode(info.Name, info.FullName);
            treeNode.ChildNodes.Add(subNode);
        }
    }
}

现在，当用户选择绑定到文件的节点时，我只是不知道如何显示文件内容。

有什么建议吗？

Answer 1

如何：

this.contentDiv.innerHtml=File.ReadAllText(ootNode.selectedNode.value);

修改如果它是文本文件，上面将返回正常的行结尾而不是html行结尾，所以你可以在下面为文本文件做：

this.contentDiv.innerHtml=File.ReadAllText(ootNode.selectedNode.value).Replace("\r\n","</br>").Replace("\r","</br>").Replace("\n","</br>");

显然仍然需要处理异常

在网页中显示asci文件的内容

1 个答案: