从 Asp.net 中的文本框路径单击按钮打开文件

Question

使用 Asp.net，我正在读取路径并显示运行时创建的文本框/框中的所有文件路径，如下所示：

这些文件不仅仅是pdf，还有ppt、doc、docx等，我使用的代码是：

 protected void SearchButton_Click(object sender, EventArgs e)
    { 
       string dir = @"D:\file path\";
       SearchResultPanel.Visible = true;

        try
        {
            //Set the current directory.
            Directory.SetCurrentDirectory(dir);

            //search all files in path
            string[] directoryEntries = Directory.GetFiles(dir, "*.*", SearchOption.AllDirectories);

            int fill = directoryEntries.Length - 1;

            //Total count of files & Decoration 
            SearchResultPanel.Controls.Add(new LiteralControl("<br />"));
            Label leb = new Label();
            SearchResultPanel.Controls.Add(new LiteralControl("The total files count: "));
            leb.Text = directoryEntries.Length.ToString();
            this.SearchResultPanel.Controls.Add(leb);
            SearchResultPanel.Controls.Add(new LiteralControl("<hr />"));


            //retriving the files in new labels
            for (int i = 0; i < fill; i++)
            {
                TextBox NewText = new TextBox();
                NewText.BorderStyle = BorderStyle.NotSet;
                NewText.TextMode = TextBoxMode.MultiLine;
                NewText.Width = 380;
                NewText.Height = 40;

                TextBox NewTextP = new TextBox();
                NewTextP.BorderStyle = BorderStyle.NotSet;
                NewTextP.TextMode = TextBoxMode.MultiLine;
                NewTextP.Width = 380;
                NewTextP.Height = 40;

                Button ButtonOpen = new Button();
                ButtonOpen.Text = "Open";


                //fill the text boxes with file entries
                String path = directoryEntries[i];
                NewText.Text = directoryEntries[i];
                NewTextP.Text = "Dummy Paragraph";
                **ButtonOpen.Click += OpenFile(path);**

                //new line
                SearchResultPanel.Controls.Add(new LiteralControl("<br />"));

                //show the text box
                this.SearchResultPanel.Controls.Add(NewText);
                SearchResultPanel.Controls.Add(new LiteralControl("&#09;"));
                this.SearchResultPanel.Controls.Add(NewTextP);
                SearchResultPanel.Controls.Add(new LiteralControl("&#09;"));
                this.SearchResultPanel.Controls.Add(ButtonOpen);
            }//end of for

        }//end of try
        catch (DirectoryNotFoundException ex)
        {
            Console.WriteLine("The specified directory does not exist. {0}", ex);
        }

我遇到了一个问题@ButtonOpen.Click += OpenFile(path);，如何在单击“打开”按钮时打开路径关联文件。

有什么建议吗？

Answer 1

请参阅此解决方案。我现在已经用示例进行了测试。如果您从中得到帮助，请标记为已回答。

我硬编码了文件路径。您可以从文本框中获取它并分配给 filePath 变量。

这是链接按钮单击事件。您必须使用 System.IO 和 System .NET 作为额外的库，用于 Path.getExtention() 和 WebClient 类。

    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        string filePath = "C:\\GIHAN\\Employee Profile - Senior Engineer Technology.docx";
        string fileExtention = Path.GetExtension(filePath);
        WebClient client = new WebClient();
        Byte[] buffer = client.DownloadData(filePath);
        Response.ContentType = ReturnExtension(fileExtention);

        Response.AddHeader("content-length", buffer.Length.ToString());
        Response.BinaryWrite(buffer);
    }

    protected void Button1_Click(object sender, EventArgs e)
    {

    }

    private string ReturnExtension(string fileExtension)
    {
        switch (fileExtension)
        {
            case ".htm":
            case ".html":
            case ".log":
                return "text/HTML";
            case ".txt":
                return "text/plain";
            case ".doc":
                return "application/ms-word";
            case ".tiff":
            case ".tif":
                return "image/tiff";
            case ".asf":
                return "video/x-ms-asf";
            case ".avi":
                return "video/avi";
            case ".zip":
                return "application/zip";
            case ".xls":
            case ".csv":
                return "application/vnd.ms-excel";
            case ".gif":
                return "image/gif";
            case ".jpg":
            case "jpeg":
                return "image/jpeg";
            case ".bmp":
                return "image/bmp";
            case ".wav":
                return "audio/wav";
            case ".mp3":
                return "audio/mpeg3";
            case ".mpg":
            case "mpeg":
                return "video/mpeg";
            case ".rtf":
                return "application/rtf";
            case ".asp":
                return "text/asp";
            case ".pdf":
                return "application/pdf";
            case ".fdf":
                return "application/vnd.fdf";
            case ".ppt":
                return "application/mspowerpoint";
            case ".dwg":
                return "image/vnd.dwg";
            case ".msg":
                return "application/msoutlook";
            case ".xml":
            case ".sdxl":
                return "application/xml";
            case ".xdp":
                return "application/vnd.adobe.xdp+xml";
            default:
                return "application/octet-stream";
        }
    }
}

}