我有一个asp.net MVC5项目,我使用Kendo Grid来显示表数据并为用户提供Export-to-Excel功能。这些数据集的列数相对较小。例如大多是3-6列。但是,我有一些持怀疑态度的用户希望能够看到数据提供给某些Kendo图表,其中数据集比我想要放在视图/浏览器中的网格中的数据集大。
我的问题是,是否有人想出了一种方法来利用“导出到Excel”功能,该功能是网格的一部分而不显示网格。我喜欢“导出”用于将数据推送到Excel的所有附加功能,所以我想知道这是否可行而不是将我自己的输出滚动到可以由Excel打开的csv文件。
想知道是否有办法直接从Controller使用Export-to-Excel功能,以便在Excel中将数据提供给用户?
这是Telerik的一个例子;
查看网格小部件
<script src="//cdnjs.cloudflare.com/ajax/libs/jszip/2.4.0/jszip.min.js"></script>
@(Html.Kendo().Grid<Kendo.Mvc.Examples.Models.ProductViewModel>()
.Name("grid")
.HtmlAttributes( new { style = "width: 900px" } )
.Columns(columns => {
columns.Bound(p => p.ProductName).Width(300).Locked()
.ClientFooterTemplate("Total Count: #=count#")
.ClientGroupFooterTemplate("Count: #=count#");
columns.Bound(p => p.UnitPrice).Width(300);
columns.Bound(p => p.UnitsOnOrder).Width(300)
.ClientFooterTemplate("Average: #=average#")
.ClientGroupFooterTemplate("Average: #=average#");
columns.Bound(p => p.UnitsInStock).Width(300)
.ClientFooterTemplate("Min: #= min # Max: #= max #")
.ClientGroupHeaderTemplate("Units In Stock: #= value # (Count: #= count#)");
})
.ToolBar(tools => tools.Excel())
.Pageable()
.Sortable()
.Scrollable()
.Groupable()
.Excel(excel => excel
.FileName("Kendo UI Grid Export.xlsx")
.Filterable(true)
.ProxyURL(Url.Action("Excel_Export_Save", "Grid"))
)
.Reorderable(r => r.Columns(true))
.Resizable(r => r.Columns(true))
.ColumnMenu()
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(7)
.Group(g => g.Add(p => p.UnitsInStock))
.Aggregates(aggregates =>
{
aggregates.Add(p => p.UnitsInStock).Min().Max().Count();
aggregates.Add(p => p.UnitsOnOrder).Average();
aggregates.Add(p => p.ProductName).Count();
aggregates.Add(p => p.UnitPrice).Sum();
})
.Read(read => read.Action("Excel_Export_Read", "Grid"))
)
)
CONTROLLER
using System.Collections.Generic;
using System.Web.Mvc;
using Kendo.Mvc.Examples.Models;
using Kendo.Mvc.Extensions;
using Kendo.Mvc.UI;
using System.Linq;
using System;
namespace Kendo.Mvc.Examples.Controllers
{
public partial class GridController : Controller
{
public ActionResult Excel_Export()
{
return View();
}
public ActionResult Excel_Export_Read([DataSourceRequest]DataSourceRequest request)
{
return Json(productService.Read().ToDataSourceResult(request));
}
[HttpPost]
public ActionResult Excel_Export_Save(string contentType, string base64, string fileName)
{
var fileContents = Convert.FromBase64String(base64);
return File(fileContents, contentType, fileName);
}
}
}
SERVICE
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
namespace Kendo.Mvc.Examples.Models
{
public class ProductService : IDisposable
{
private SampleEntities entities;
public ProductService(SampleEntities entities)
{
this.entities = entities;
}
public IEnumerable<ProductViewModel> Read()
{
return entities.Products.Select(product => new ProductViewModel
{
ProductID = product.ProductID,
ProductName = product.ProductName,
UnitPrice = product.UnitPrice.HasValue ? product.UnitPrice.Value : default(decimal),
UnitsInStock = product.UnitsInStock.HasValue ? product.UnitsInStock.Value : default(short),
QuantityPerUnit = product.QuantityPerUnit,
Discontinued = product.Discontinued,
UnitsOnOrder = product.UnitsOnOrder.HasValue ? (int)product.UnitsOnOrder.Value : default(int),
CategoryID = product.CategoryID,
Category = new CategoryViewModel()
{
CategoryID = product.Category.CategoryID,
CategoryName = product.Category.CategoryName
},
LastSupply = DateTime.Today
});
}
public void Create(ProductViewModel product)
{
var entity = new Product();
entity.ProductName = product.ProductName;
entity.UnitPrice = product.UnitPrice;
entity.UnitsInStock = (short)product.UnitsInStock;
entity.Discontinued = product.Discontinued;
entity.CategoryID = product.CategoryID;
if (entity.CategoryID == null)
{
entity.CategoryID = 1;
}
if (product.Category != null)
{
entity.CategoryID = product.Category.CategoryID;
}
entities.Products.Add(entity);
entities.SaveChanges();
product.ProductID = entity.ProductID;
}
public void Update(ProductViewModel product)
{
var entity = new Product();
entity.ProductID = product.ProductID;
entity.ProductName = product.ProductName;
entity.UnitPrice = product.UnitPrice;
entity.UnitsInStock = (short)product.UnitsInStock;
entity.Discontinued = product.Discontinued;
entity.CategoryID = product.CategoryID;
if (product.Category != null)
{
entity.CategoryID = product.Category.CategoryID;
}
entities.Products.Attach(entity);
entities.Entry(entity).State = EntityState.Modified;
entities.SaveChanges();
}
public void Destroy(ProductViewModel product)
{
var entity = new Product();
entity.ProductID = product.ProductID;
entities.Products.Attach(entity);
entities.Products.Remove(entity);
var orderDetails = entities.Order_Details.Where(pd => pd.ProductID == entity.ProductID);
foreach (var orderDetail in orderDetails)
{
entities.Order_Details.Remove(orderDetail);
}
entities.SaveChanges();
}
public void Dispose()
{
entities.Dispose();
}
}
}
BTW,这种'分类'是什么类型的架构?我喜欢它,并希望阅读它。
答案 0 :(得分:1)
如何隐藏网格并添加自己的按钮(或类似按钮)来触发导出?
例如(使用引用的代码):
添加按钮(或在图表中添加类似的挂钩)
<button id="myexport">Export to Excel</button>
隐藏网格并附加处理程序:
$(document).ready(function () {
$("#grid").hide();
$("#myexport").click(function () {
var grid = $("#grid").data("kendoGrid");
grid.saveAsExcel();
});
});
答案 1 :(得分:0)
您示例中的架构是 ASP.NET MVC。
另一种方法是在点击页面上的某些内容时使用 jQuery 触发查找,例如带有 <div>
的 id="export"
:
$('#export').click(function (e) {
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
url: 'Grid/Excel_Export_Save',
async: false,
success: exportCSV,
});
});
您可以编写自己的导出函数。我们有一种导出到 CSV 的方法,如下所示:
function exportCSV(json) {
var csv = 'Product ID,Name,Unit Price,Qty In Stock,Discontinued,Category ID\n';
var download = 'products.csv';
$.each(json.Data, function (index, rowArray) {
var row = [];
row.push(rowArray.ProductID);
row.push(rowArray.ProductName);
row.push(rowArray.UnitPrice);
row.push(rowArray.UnitsInStock);
row.push(rowArray.Discontinued);
row.push(rowArray.CategoryID);
csv += row.join(',') + '\r\n';
});
var hiddenElement = document.createElement('a');
hiddenElement.href = 'data:text/csv;charset=utf-8,' + encodeURI(csv);
hiddenElement.target = '_blank';
hiddenElement.download = download;
hiddenElement.click();
};
要调用它,您需要在控制器中创建一个允许 Json 请求的函数:
public async Task<JsonResult> GetGapReport([DataSourceRequest] DataSourceRequest request, String serviceType = null) {
var result = new DataSourceResult();
var products = new List<ProductViewModel>();
try {
var report = await productService.Read();
products.AddRange(report.ToArray());
result = products.ToDataSourceResult(request);
} catch (Exception err) {
result.Errors = err.Message;
}
return new JsonResult {
Data = result,
JsonRequestBehavior = JsonRequestBehavior.AllowGet,
MaxJsonLength = Int32.MaxValue
};
}