我有以下JQGrid表，它是从JSON数据生成的。我希望能够基于可查看的表数据状态生成/导出或创建pdf文件。我正在使用JSON，Jqgrid和Javascript
如何从数据生成pdf文件？ Here My FIDDLE
JS CODE
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答案 0 :(得分：0)
没有用于将jqgrid数据导出到pdf的方法。你必须使用第三方工具（我个人喜欢可以从Here 下载的iTextSharp。你必须创建在控制器中打印网格数据的操作方法。
Here 也是另一个人做的例子。
Here 也是trirand中的另一个例子。如果您看到他们使用iTextHsarp的源代码。 使用System.Collections.Generic; 使用System.Linq; 使用System.Web; 使用System.Web.Mvc; 使用JQGridMVCExamples.Models; 使用Trirand.Web.Mvc; 使用System.IO;
//
// For PDF export we are using the free open-source iTextSharp library.
//
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.Data;
namespace JQGridMVCExamples.Controllers.Grid
{
public partial class GridController : Controller
{
// This is the default action for the View. Use it to setup your grid Model.
public ActionResult ExportPDF()
{
// Get the model (setup) of the grid defined in the /Models folder.
var gridModel = new OrdersJqGridModel();
var ordersGrid = gridModel.OrdersGrid;
// Setting the DataUrl to an action (method) in the controller is required.
// This action will return the data needed by the grid
ordersGrid.DataUrl = Url.Action("PDFGrid_DataRequested");
// customize the default Orders grid model with custom settings
// NOTE: you need to call this method in the action that fetches the data as well,
// so that the models match
SetPDFExportGrid(ordersGrid);
// Pass the custmomized grid model to the View
return View(gridModel);
}
// This method is called when the grid requests data
public JsonResult PDFGrid_DataRequested()
{
// Get both the grid Model and the data Model
// The data model in our case is an autogenerated linq2sql database based on Northwind.
var gridModel = new OrdersJqGridModel();
var northWindModel = new NorthwindDataContext();
// customize the default Orders grid model with our custom settings
SetPDFExportGrid(gridModel.OrdersGrid);
// Save the current grid state in Session
// We will later need it for PDF Export
JQGridState gridState = gridModel.OrdersGrid.GetState();
Session["gridState"] = gridState;
// return the result of the DataBind method, passing the datasource as a parameter
// jqGrid for ASP.NET MVC automatically takes care of paging, sorting, filtering/searching, etc
return gridModel.OrdersGrid.DataBind(northWindModel.Orders);
}
public JsonResult PDFExport_AutoCompleteShipName(string term)
{
var northWindModel = new NorthwindDataContext();
JQAutoComplete autoComplete = new JQAutoComplete();
autoComplete.DataField = "ShipName";
autoComplete.AutoCompleteMode = AutoCompleteMode.BeginsWith;
autoComplete.DataSource = from o in northWindModel.Orders
select o;
return autoComplete.DataBind();
}
private void SetPDFExportGrid(JQGrid ordersGrid)
{
// show the search toolbar
ordersGrid.ToolBarSettings.ShowSearchToolBar = true;
ordersGrid.ToolBarSettings.ShowSearchButton = true;
var orderDateColumn = ordersGrid.Columns.Find(c => c.DataField == "OrderDate");
orderDateColumn.DataFormatString = "{0:yyyy/MM/dd}";
orderDateColumn.SearchType = SearchType.DatePicker;
orderDateColumn.DataType = typeof(DateTime);
orderDateColumn.SearchControlID = "DatePicker";
orderDateColumn.SearchToolBarOperation = SearchOperation.IsEqualTo;
var shipNameColumn = ordersGrid.Columns.Find(c => c.DataField == "ShipName");
shipNameColumn.SearchType = SearchType.AutoComplete;
shipNameColumn.DataType = typeof(string);
shipNameColumn.SearchControlID = "AutoComplete";
shipNameColumn.SearchToolBarOperation = SearchOperation.Contains;
var orderIDColumns = ordersGrid.Columns.Find(c => c.DataField == "OrderID");
orderIDColumns.Searchable = true;
orderIDColumns.DataType = typeof(int);
orderIDColumns.SearchToolBarOperation = SearchOperation.IsEqualTo;
SetPDFCustomerIDSearchDropDown(ordersGrid);
SetPDFFreightSearchDropDown(ordersGrid);
}
private void SetPDFCustomerIDSearchDropDown(JQGrid ordersGrid)
{
// setup the grid search criteria for the columns
JQGridColumn customersColumn = ordersGrid.Columns.Find(c => c.DataField == "CustomerID");
customersColumn.Searchable = true;
// DataType must be set in order to use searching
customersColumn.DataType = typeof(string);
customersColumn.SearchToolBarOperation = SearchOperation.IsEqualTo;
customersColumn.SearchType = SearchType.DropDown;
// Populate the search dropdown only on initial request, in order to optimize performance
if (ordersGrid.AjaxCallBackMode == AjaxCallBackMode.RequestData)
{
var northWindModel = new NorthwindDataContext();
var searchList = from customers in northWindModel.Customers
select new SelectListItem
{
Text = customers.CustomerID,
Value = customers.CustomerID
};
customersColumn.SearchList = searchList.ToList<SelectListItem>();
customersColumn.SearchList.Insert(0, new SelectListItem { Text = "All", Value = "" });
}
}
private void SetPDFFreightSearchDropDown(JQGrid ordersGrid)
{
// setup the grid search criteria for the columns
JQGridColumn freightColumn = ordersGrid.Columns.Find(c => c.DataField == "Freight");
freightColumn.Searchable = true;
// DataType must be set in order to use searching
freightColumn.DataType = typeof(decimal);
freightColumn.SearchToolBarOperation = SearchOperation.IsGreaterOrEqualTo;
freightColumn.SearchType = SearchType.DropDown;
// Populate the search dropdown only on initial request, in order to optimize performance
if (ordersGrid.AjaxCallBackMode == AjaxCallBackMode.RequestData)
{
List<SelectListItem> searchList = new List<SelectListItem>();
searchList.Add(new SelectListItem { Text = "> 10", Value = "10" });
searchList.Add(new SelectListItem { Text = "> 30", Value = "30" });
searchList.Add(new SelectListItem { Text = "> 50", Value = "50" });
searchList.Add(new SelectListItem { Text = "> 100", Value = "100" });
freightColumn.SearchList = searchList.ToList<SelectListItem>();
freightColumn.SearchList.Insert(0, new SelectListItem { Text = "All", Value = "" });
}
}
public ActionResult ExportToPDF(string exportType)
{
var gridModel = new OrdersJqGridModel();
var northWindModel = new NorthwindDataContext();
var grid = gridModel.OrdersGrid;
// Get the last grid state the we saved before in Session in the DataRequested action
JQGridState gridState = Session["GridState"] as JQGridState;
// Need to set grid options again
SetExportGrid(grid);
if (String.IsNullOrEmpty(exportType))
exportType = "1";
DataTable exportData;
switch (exportType)
{
case "1":
grid.ExportSettings.ExportDataRange = ExportDataRange.All;
exportData = grid.GetExportData(northWindModel.Orders);
ExportToPDF(exportData);
break;
case "2":
grid.ExportSettings.ExportDataRange = ExportDataRange.Filtered;
exportData = grid.GetExportData(northWindModel.Orders, gridState);
ExportToPDF(exportData);
break;
case "3":
grid.ExportSettings.ExportDataRange = ExportDataRange.FilteredAndPaged;
exportData = grid.GetExportData(northWindModel.Orders, gridState);
ExportToPDF(exportData);
break;
}
return View();
}
private void ExportToPDF(DataTable dt)
{
//
// For PDF export we are using the free open-source iTextSharp library.
//
Document pdfDoc = new Document();
MemoryStream pdfStream = new MemoryStream();
PdfWriter pdfWriter = PdfWriter.GetInstance(pdfDoc, pdfStream);
pdfDoc.Open();//Open Document to write
pdfDoc.NewPage();
Font font8 = FontFactory.GetFont("ARIAL", 7);
PdfPTable PdfTable = new PdfPTable(dt.Columns.Count);
PdfPCell PdfPCell = null;
//Add Header of the pdf table
for (int column = 0; column < dt.Columns.Count; column++)
{
PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Columns[column].Caption, font8)));
PdfTable.AddCell(PdfPCell);
}
//How add the data from datatable to pdf table
for (int rows = 0; rows < dt.Rows.Count; rows++)
{
for (int column = 0; column < dt.Columns.Count; column++)
{
PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Rows[rows][column].ToString(), font8)));
PdfTable.AddCell(PdfPCell);
}
}
PdfTable.SpacingBefore = 15f; // Give some space after the text or it may overlap the table
pdfDoc.Add(PdfTable); // add pdf table to the document
pdfDoc.Close();
pdfWriter.Close();
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=gridexport.pdf");
Response.BinaryWrite(pdfStream.ToArray());
Response.End();
}
}
}