您的详细信息中没有文本框，它是一个单元格。 所以你需要改变你的代码。

 string sOrderNumber = Order_DetailsView.Rows[0].Cells[0].Text.ToString(); int orderNumber = Int32.Parse(sOrderNumber); 

应该有一个TemplateField如下：

然后你可以这样访问它：

 string sOrderNumber = ((TextBox)Order_DetailsView.Rows[0].Cells[0].FindControl("txtOrderNo")).Text; 

对于BoundField值，您可以这样做：

 protected void Order_DetailsView_DataBound(object sender, EventArgs e) { string MyOrderNumber = Order_DetailsView.Rows[0].Cells[0].Text; } 

您的详细信息视图中没有TextBox控件，您应该使用TemplateField ，如下所示：

然后你可以使用FindControl()方法通过ID值获取Label控件，如下所示：

 Label theOrderNumberLabel = Order_DetailsView.FindControl("LabelOrderNumber") as Label; // Verify that we found the label before we try to use it if(theOrderNumberLabel != null) { string orderNumberText = theOrderNumberLabel.Text; // Do something with order number here } 

 **//This controller.cs class will make a .pdf file from the query output. Change //the values at "p" from the attributes of your database table. //The href tag of calling the controller class Action Export method from the //View class as a MVC design is: // Print Orders //Make sure to make the model class with crystal report design and ADO.NET //dataset. I have only include the controller class of the MVC model to //make it work only.** using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using MvcApplicationCrystalReportRptSTP.Reports; using MvcApplicationCrystalReportRptSTP.Models; using CrystalDecisions.CrystalReports.Engine; using System.IO; namespace MvcApplicationCrystalReportRptSTP.Controllers { public class tblOrderController : Controller { private DB_JDBCLOGEntities mde = new DB_JDBCLOGEntities(); // // GET: /tblOrder/ public ActionResult Index() { ViewBag.ListProducts = mde.tblOrders.ToList(); return View(); } public ActionResult Export() { ReportDocument rd = new ReportDocument(); rd.Load(Path.Combine(Server.MapPath("~/Reports/CrystalReporttblOrder.rpt"))); rd.SetDataSource(mde.tblOrders.Select(p=> new { ID= p.ID, Ordernum=p.Ordernum, Username=p.Username, Password=p.Password, Price=p.Price.Value, AddCart=p.AddCart.Value, Image=p.Image }).ToList()); Response.Buffer=false; Response.ClearContent(); Response.ClearHeaders(); Stream stream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat); stream.Seek(0, SeekOrigin.Begin); return File(stream,"application/pdf","tblOrder.pdf"); } } } 

发布者：Aneel Goplani。 CIS。 2002年。美国。 明尼苏达州立大学曼凯托分校。

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