打开asp.net生成的PDF文件时出错

时间:2013-06-03 07:02:58

标签: c# html asp.net pdf adobe

我正在尝试为我的网站生成PDF。目前,我正在尝试从数据库中获取数据并将其显示在我的PDF文件中,但我的主要优先事项实际上是从asp:标签获取值并将其导出为pdf格式。不幸的是,当我打开生成的PDF文件时,我收到了这个错误。

错误:打开此文档时出错。此文件已被其他应用程序打开或正在使用

protected void btnPDF_Click(object sender, EventArgs e)
    {

        var doc1 = new Document();
        var filename = DDLCase.SelectedItem.Text + ".pdf";
        var output = new FileStream(Path.Combine("C:\\Users\\apr12mpsip\\Desktop", filename), FileMode.Create);
        doc1.Open();

        PdfPTable table = new PdfPTable(3);
        PdfPCell cell = new PdfPCell(new Phrase("Header spanning 3 columns"));
        cell.Colspan = 3;
        cell.HorizontalAlignment = 1; 
        table.AddCell(cell);
        table.AddCell("Col 1 Row 1");
        table.AddCell("Col 2 Row 1");

        doc1.Add(table);

        SqlConnection con = new SqlConnection("Data Source = localhost; Initial Catalog = project; Integrated Security = SSPI");

        SqlCommand cm = new SqlCommand("Select typeofcrime, citizenreport from MemberReport where memberreportid='"+DDLCase.SelectedValue+"'", con);
        con.Open();
        SqlDataReader dr;
        dr = cm.ExecuteReader();
        while (dr.Read())
        {
            table.AddCell(dr[0].ToString());
            table.AddCell(dr[1].ToString());
        }
        dr.Close();


        doc1.Close();

    }

我检查了我的代码,但我找不到任何方法来解决错误并成功获取值。

1 个答案:

答案 0 :(得分:1)

你做

var doc1 = new Document();
var filename = DDLCase.SelectedItem.Text + ".pdf";
var output = new FileStream(Path.Combine("C:\\Users\\apr12mpsip\\Desktop", filename), FileMode.Create);
doc1.Open();
[... fetching some data and adding that to`doc1 ...]
doc1.Close();

它突然意识到你没有以任何方式将outputDocument doc1.相关联。因此,你的文件根本不会被写入,但它也不会被关闭。

您很可能还想要实例化PdfWriter,该output写入doc1:并从var doc1 = new Document(); var filename = DDLCase.SelectedItem.Text + ".pdf"; var output = new FileStream(Path.Combine("C:\\Users\\apr12mpsip\\Desktop", filename), FileMode.Create); PdfWriter.GetInstance(doc1, output); // instantiate a PdfWriter for doc1 and output doc1.Open(); [... fetching some data and adding that to`doc1 ...] doc1.Close(); 收到

{{1}}