如何打开通过搜索一个WebForm应用程序中的PDF文件？ [英] How to open a pdf file in a WebForm application by search?

问题描述

当我点击该搜索的PDF文件列表框，它是不开放。

在code如下。有什么想法？

 保护无效的button1_Click（对象发件人，EventArgs的发送）
{
  ListBox1.Items.Clear（）;
  字符串搜索= TextBox1.Text;
  如果（TextBox1.Text！=）
  {
    字符串[] = pdffiles Directory.GetFiles（@\\\\ 192.168.5.10 \\ FBAR \\报告\\克洛托\\ H2 \\报告\\，*+ TextBox1.Text +* .PDF，SearchOption.AllDirectories）;
    的foreach（在pdffiles字符串的文件）
    {
      // ListBox1.Items.Add（文件）;
      ListBox1.Items.Add（Path.GetFileName（文件））;
    }
  }
  其他
  {
    的Response.Write（＆LT;脚本＆GT;警报（'对于这个晶圆ID报表不产生'）;＆LT; / SCRIPT＆gt;中）;
  }
}保护无效ListBox1_SelectedIndexChanged（对象发件人，EventArgs的发送）
{
  字符串pdffiles = ListBox1.SelectedItem.ToString（）;  的String.Format（附件;文件名= {0}，文件名））;  的ProcessStartInfo infoOpenPdf =新的ProcessStartInfo（）;
  infoOpenPdf.FileName = pdffiles;
  infoOpenPdf.Verb =OPEN;
  //的Process.Start（文件）;
  infoOpenPdf.CreateNoWindow = TRUE;
  infoOpenPdf.WindowStyle = ProcessWindowStyle.Normal;  流程openPdf =新的Process（）;
  openPdf.StartInfo = infoOpenPdf;
  openPdf.Start（）;
}
 

解决方案

首先，你必须保存该文件的全名后得到它。所以，你必须从改变：

  ListBox1.Items.Add（Path.GetFileName（文件））;
 

要：

  ListBox1.Items.Add（新的ListItem（Path.GetFileName（文件），文件））;
 

---

然后，您应该从服务器发送文件到客户端，像这样的：

 保护无效ListBox1_SelectedIndexChanged（对象发件人，EventArgs的发送）
{
    字符串文件名= ListBox1.SelectedValue;
    字节[] = fileBytes System.IO.File.ReadAllBytes（文件名）;    System.Web.HttpContext语境= System.Web.HttpContext.Current;
    context.Response.Clear（）;
    context.Response.ClearHeaders（）;
    context.Response.ClearContent（）;
    context.Response.AppendHeader（内容长度，fileBytes.Length.ToString（））;
    context.Response.ContentType =应用程序/ PDF
    context.Response.AppendHeader（内容处置，附件;文件名=+文件名）;
    context.Response.BinaryWrite（fileBytes）;
    context.ApplicationInstance.CompleteRequest（）;
}
 

---

请注意：不要忘了初始化的ListBox 与物业的AutoPostBack 设置好的为真正。

When I click on the listbox which search a PDF file, it's not opening.

The code is below. Any thoughts?

protected void Button1_Click(object sender, EventArgs e)
{
  ListBox1.Items.Clear();
  string search = TextBox1.Text;
  if (TextBox1.Text != "") 
  {
    string[] pdffiles = Directory.GetFiles(@"\\192.168.5.10\fbar\REPORT\CLOTHO\H2\REPORT\", "*" + TextBox1.Text + "*.pdf", SearchOption.AllDirectories);
    foreach (string file in pdffiles)
    {
      // ListBox1.Items.Add(file);
      ListBox1.Items.Add(Path.GetFileName(file));
    }
  }
  else
  {
    Response.Write("<script>alert('For this Wafer ID Report is Not Generated');</script>");
  }
}

protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
  string pdffiles = ListBox1.SelectedItem.ToString();

  string.Format("attachment; filename={0}", fileName));

  ProcessStartInfo infoOpenPdf = new ProcessStartInfo();
  infoOpenPdf.FileName = pdffiles;
  infoOpenPdf.Verb = "OPEN";
  // Process.Start(file);
  infoOpenPdf.CreateNoWindow = true;
  infoOpenPdf.WindowStyle = ProcessWindowStyle.Normal;

  Process openPdf = new Process();
  openPdf.StartInfo = infoOpenPdf;
  openPdf.Start();
}

解决方案

First, you must save the file's full name to get it later. So, you must change from:

ListBox1.Items.Add(Path.GetFileName(file));

To:

ListBox1.Items.Add(new ListItem(Path.GetFileName(file), file));

---

Then, you should send the file from the server to the client, like this:

protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    string fileName = ListBox1.SelectedValue;
    byte[] fileBytes = System.IO.File.ReadAllBytes(fileName);

    System.Web.HttpContext context = System.Web.HttpContext.Current;
    context.Response.Clear();
    context.Response.ClearHeaders();
    context.Response.ClearContent();
    context.Response.AppendHeader("content-length", fileBytes.Length.ToString());
    context.Response.ContentType = "application/pdf";
    context.Response.AppendHeader("content-disposition", "attachment; filename=" + fileName);
    context.Response.BinaryWrite(fileBytes);
    context.ApplicationInstance.CompleteRequest();
}

---

Note: don't forget to initialize your ListBox with the property AutoPostBack setted to true.

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