PdfPTable构造函数中的列数必须大于零

Question

protected void pdf(DataTable dt, string str)
        {
            Document doc = new Document(iTextSharp.text.PageSize.A4, 10, 22, 34, 34);
            PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream(Request.PhysicalApplicationPath+"sdad.pdf", FileMode.Create));
            doc.Open();
            doc.Add(new Paragraph("Table"));
            GridView dataGridview = new GridView();


            dataGridview.ShowHeaderWhenEmpty = true;
            dataGridview.AllowPaging = false;
            dataGridview.DataSource = dt;
            dataGridview.DataBind();
            PdfPTable table = new PdfPTable(dataGridview.Columns.Count);
            for (int j = 0; j < dataGridview.Columns.Count; j++)
            {
                table.AddCell(new Phrase(dataGridview.Columns[j].HeaderText));
            }
            table.HeaderRows = 1;
            for (int j = 0; j < dataGridview.Rows.Count;j++)
            {
                for (int k = 0; k < dataGridview.Columns.Count; k++)
                {
                    if (dataGridview.Rows[j].Cells[k].Text  != null)
                    {
                        table.AddCell(new Phrase(dataGridview.Rows[j].Cells[k].Text.ToString()));
                    }
                }
            }
            doc.Add(table);
            doc.Close();

        }

这是使用Isharp文本创建PDF的代码。但是我遇到了错误PdfPTable构造函数中的列数必须大于零。请任何人帮助解决此错误。预先感谢。

Answer 1

我遇到了这个问题，我找到了解决方法，您可以添加

AutoGenerateColumns="False" ItemsSource="{Binding}在您的xml中（在DataGrid标记中）。那么您必须指定dataGrid.Columns。

<DataGrid  Name="grdTransaksi" HorizontalAlignment="Left"Margin="10,94,0,0" VerticalAlignment="Top" AutoGenerateColumns="False" ItemsSource="{Binding}">
     <DataGrid.Columns>
       <DataGridTextColumn Header="Tanggal" Binding="{Binding tanggal}" />
       <DataGridTextColumn Header="Kode Akun" Binding="{Binding KodeAkun}" />
     </DataGrid.Columns>
</DataGrid>