Kendo Grid MVC-服务器导出Excel日期时间字段自定义格式

问题描述

datetime字段被导出为数字，但是如果我将单元格更改为Excel中的datetime类型，则它将获得正确的值。 除日期格式外，所有服务器导出功能均可用。 由于我正在执行服务器导出，因此我不能依靠https://docs.telerik.com/kendo-ui/knowledge-base/cell-format

这样的客户端解决方案

控制器：

library(shinyjs)
library(openxlsx)
library(DT)
library(shiny)

# create some example data to download
my_table <- data.frame(
    Name = letters[1:4],Age = seq(20,26,2),Occupation = LETTERS[15:18],Income = c(50000,20000,30000,45000)
)
# add a totals row
my_table <- rbind(
    my_table,data.frame(
        Name = "Total",Age = NA_integer_,Occupation = "",Income = sum(my_table$Income)
    )
)
# minimal Shiny UI
ui <- fluidRow(
    column(
        width = 12,align = "center",DT::dataTableOutput("table_out")
    ))

# minimal Shiny server
server <- function(input,output) {
    output$table_out <- renderDataTable(server = FALSE,{DT::datatable(my_table,extensions="Buttons",options = list(dom = 'Bfrtip',initComplete = JS(
                                            "function(settings,json) {","$(this.api().table().header()).css({'color': '#fff','background':'#dd4b39'});","}"),buttons = list("excel","pdf")
                                            
                                        ))})}

shinyApp(ui,server)

导出表单/按钮：

        [HttpPost]
        public FileStreamResult ExportServer([DataSourceRequest]DataSourceRequest request,string model,string data)
        {
            var columnsData = JsonConvert.DeserializeObject<IList<ExportColumnSettings>>(HttpUtility.UrlDecode(model));
            dynamic options = JsonConvert.DeserializeObject(HttpUtility.UrlDecode(data));
            SpreadDocumentFormat exportFormat = options.format.ToString() == "csv" ? exportFormat = SpreadDocumentFormat.Csv : exportFormat = SpreadDocumentFormat.Xlsx;
            Action<ExportCellStyle> cellStyle = new Action<ExportCellStyle>(ChangeCellStyle);
            Action<ExportRowStyle> rowStyle = new Action<ExportRowStyle>(ChangeRowStyle);
            Action<ExportColumnStyle> columnStyle = new Action<ExportColumnStyle>(ChangeColumnStyle);
            

            string fileName = string.Format("{0}.{1}",options.title,options.format);
            string mimeType = Helpers.GetMimeType(exportFormat);

            

            Stream exportStream = exportFormat == SpreadDocumentFormat.Xlsx ?
                db.VWMapaCompleto.ToList().ToDataSourceResult(request).Data.ToXlsxStream(columnsData,(string)options.title.ToString(),cellStyleAction: cellStyle,rowStyleAction: rowStyle,columnStyleAction: columnStyle) :
                db.VWMapaCompleto.ToList().ToDataSourceResult(request).Data.ToCsvStream(columnsData);

            var fileStreamResult = new FileStreamResult(exportStream,mimeType);
            fileStreamResult.FileDownloadName = fileName;
            fileStreamResult.FileStream.Seek(0,SeekOrigin.Begin);

            return fileStreamResult;
        }

        private void ChangeCellStyle(ExportCellStyle e)
        {
            bool isHeader = e.Row == 0;
            SpreadCellFormat format = new SpreadCellFormat
            {
                ForeColor = isHeader ? SpreadThemableColor.Fromrgb(216,184,168) : SpreadThemableColor.Fromrgb(0,0),//IsItalic = true,//VerticalAlignment = SpreadVerticalAlignment.Center,WrapText = true,Fill = SpreadPatternFill.CreateSolidFill(isHeader ? new SpreadColor(50,54,58) : new SpreadColor(255,255,255))                
            };
            e.Cell.SetFormat(format);            
        }

        private void ChangeRowStyle(ExportRowStyle e)
        {
            e.Row.SetHeightInPixels(e.Index == 0 ? 30 : 30);
        }

        private void ChangeColumnStyle(ExportColumnStyle e)
        {
            double width = e.Name == "Product name" || e.Name == "Category Name" ? 250 : 100;
            e.Column.SetWidthInPixels(width+50);
        }

解决方法

我通过添加以下内容解决了该问题：

NumberFormat =“ yyyy / MM / dd h：mm”

format = new SpreadCellFormat
                {
                    ForeColor = isHeader ? SpreadThemableColor.FromRgb(216,184,168) : SpreadThemableColor.FromRgb(0,0),//IsItalic = true,//VerticalAlignment = SpreadVerticalAlignment.Center,WrapText = true,Fill = SpreadPatternFill.CreateSolidFill(isHeader ? new SpreadColor(50,54,58) : new SpreadColor(255,255,255)),NumberFormat = "yyyy/MM/dd h:mm"
                };