问题描述
先生, 贝娄是我转换为pdf的代码。但没有任何内容以pdf显示
sir, bellow is my code for convert to pdf.but nothing displays in pdf
protected void Button1_Click(object sender, EventArgs e)
{
GeneratePDF();
}
private void GeneratePDF()
{
DataTable dtTemp = new DataTable();
dtTemp.Columns.Add("Customer ID");
dtTemp.Columns.Add("First Name");
dtTemp.Columns.Add("Last Name");
dtTemp.Columns.Add("Address");
dtTemp.Rows.Add("0001", "Peter", "p", "2376, 00800, calicut");
dtTemp.Rows.Add("0002", "Alfred", "k", "3453, 00800, calicut");
dtTemp.Rows.Add("0003", "Alice", "n", "6056, 00800, calicut");
dtTemp.Rows.Add("0004", "Denis", "h", "5672, 00800, calicut");
dtTemp.Rows.Add("0005", "Paul", "k", "8734, 00800, calicut");
Document pdfDoc = new Document(PageSize.A4, 30, 30, 40, 25);
var filename = Server.MapPath("test4.pdf");
// var output = new FileStream(Path.Combine("C:\\Users\\apr13mpsip\\Downloads", filename), FileMode.Create);
//iTextSharp.text.pdf.PdfWriter.GetInstance(doc1, output);
using (var output = File.Create(filename))
{
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, output);
}
//System.IO.MemoryStream mStream = new System.IO.MemoryStream();
//PdfWriter writer = PdfWriter.GetInstance(pdfDoc, mStream);
int cols = dtTemp.Columns.Count;
int rows = dtTemp.Rows.Count;
pdfDoc.Open();
iTextSharp.text.Table pdfTable = new iTextSharp.text.Table(cols, rows);
pdfTable.BorderWidth = 1;
pdfTable.Padding = 1;
pdfTable.Spacing = 1;
//creating table headers
for (int i = 0; i < cols; i++)
{
Cell cellCols = new Cell();
Font ColFont = FontFactory.GetFont(FontFactory.HELVETICA, 12, Font.BOLD);
Chunk chunkCols = new Chunk(dtTemp.Columns[i].ColumnName, ColFont);
cellCols.Add(chunkCols);
pdfTable.AddCell(cellCols);
}
//creating table data (actual result)
for (int k = 0; k < rows; k++)
{
for (int j = 0; j < cols; j++)
{
Cell cellRows = new Cell();
Font RowFont = FontFactory.GetFont(FontFactory.HELVETICA, 12);
Chunk chunkRows = new Chunk(dtTemp.Rows[k][j].ToString(), RowFont);
cellRows.Add(chunkRows);
pdfTable.AddCell(cellRows);
}
}
pdfDoc.Add(pdfTable);
//Response.ContentType = "application/octet-stream";
//Response.AddHeader("Content-Disposition", "attachment; filename=Report.pdf");
//Response.Clear();
//Response.BinaryWrite(mStream.ToArray());
//Response.End();
}
[edit]已添加代码块 - OriginalGriff [/ edit]
[edit]Code block added - OriginalGriff[/edit]
推荐答案
嗯。 你会意识到什么是
使用
bloc k,我假设? 那么,你怎么期望这个工作:
Um.
You do realise what a using
block does, I assume?
So, how do you expect this to work:
using (var output = File.Create(filename))
{
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, output);
}
你创建一个内存流,你将它连接到一个PDF文档......然后你关闭它然后把它扔掉...... 你不要试着写它,保存或发送到任何地方,所以你的整个代码总是没有...:笑: 所以看看扩展使用块,并在添加表格之后实际对数据执行某些操作,例如!
You create a memory stream, you connect it to a PDF document...and then you close it and throw it away... You don't try to write it, save it or send it anywhere, so the whole of your code does a total of nothing...:laugh: So look at extending the using block, and actually doing something with the data once you have added your table and such like!