我正在尝试使用MVC 4导出pdf。在尝试在pdf文档中嵌入Html时导出时出错：
我添加了iTextSharp.dll，但我不知道为什么我会收到错误。请提前帮助我。
下面是我的方法：
public FileResult ExportData()
{
List<Tb_ModalListFileUpload> objlist = new List<Tb_ModalListFileUpload>();
objlist = (from p in obj.Tb_ModalListFileUpload select p).ToList();
WebGrid wd = new WebGrid(source: objlist, canPage: false, canSort: false);
string griddata = wd.GetHtml(
columns: wd.Columns
(
wd.Column(columnName: "SRNO", header: "SRNO"),
wd.Column(columnName: "ModelName", header: "Model Name"),
wd.Column(columnName: "ModelCC", header: "Model CC"),
wd.Column(columnName: "ModelRate", header: "Model Rate"),
wd.Column(columnName: "ModelRC", header: "Model RC"),
wd.Column(columnName: "IncWith0", header: "Inc With 0"),
wd.Column(columnName: "IncWith50", header: "Inc With 50"),
wd.Column(columnName: "Provisional", header: "Provisional"),
wd.Column(columnName: "NetPriceWith0", header: "Net Price With 0"),
wd.Column(columnName: "NetPriceWith50", header: "Net Price With 50")
)
).ToString();
string exportData = String.Format("<html><head>{0}</head><body>{1}</body></html>", "<style>table{ border-spacing: 10px; border-collapse: separate; }</style>", griddata);
var bytes = System.Text.Encoding.UTF8.GetBytes(exportData);
using (var input = new MemoryStream(bytes))
{
var output = new MemoryStream();
var document = new iTextSharp.text.Document(PageSize.A4, 50, 50, 50, 50);
var writer = PdfWriter.GetInstance(document, output);
writer.CloseStream = false;
document.Open();
var xmlWorker = iTextSharp.tool.xml.XMLWorkerHelper.GetInstance();
xmlWorker.ParseXHtml(writer, document, input, System.Text.Encoding.UTF8);
document.Add(new Paragraph("Hello World!"));
document.Close();
output.Position = 0;
return new FileStreamResult(output, "application/pdf");
}
}