ComponentOne ASP.NET MVC Controls
Working with Controls / FlexGrid / Work with FlexGrid / Transposed Grid
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    Transposed Grid
    In This Topic

    In regular grids, each item is represented by a row with columns that represent the item properties. Whereas, in transposed grids, each item is represented by a column with rows that represent the item properties. TransposedGrid is a FlexGrid extension that supports a grid where the rows and columns are transposed.

    MVC allows you to work with the transposed grids by using the TransposedGrid class. This class allows the grid control to display data using a transposed layout, where columns represent data items and rows represent item properties. In such transposed grids, the column headers appear on the left side of the grid. each item is represented by a column with rows that represent the item properties.

    To create an application using a TransposeGrid control for displaying products on the grid columns and their properties on the grid rows, follow these steps:

    Transposed Grid

    Create an MVC Application

    Create a new MVC application using the ComponentOne or VisualStudio templates. For more information about creating an MVC application, see Configuring your MVC Application topic.

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    Create a Data Source for TransposeGrid

    1. Add a new class to the folder Models (for example: Sale.cs). See Adding controls to know how to add a new model.
    2. Replace the following code in the new model to define the class that serve as a data source for the TransposeGrid control.
      C#
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      public class ProductSheet
      {
              public string Name { get; set; }
              public string Image { get; set; }
              public double Rating { get; set; }
              public double Price { get; set; }
              public string Screen { get; set; }
              public string Camera { get; set; }
              public string OS { get; set; }
              public string CPU { get; set; }
              public int RAM { get; set; }
              public int ROM { get; set; }
              public string SIM { get; set; }
              public double Battery { get; set; }
              
              public static List<ProductSheet> GetData()
              {
                      return new List<ProductSheet>() {
                              new ProductSheet() {
                                      Name = "OPPO A5 (2020) 64GB",
                                      Image = "Content/images/ProductSheet/1.jpg",
                                      Rating = 4,
                                      Price = 199,
                                      Screen = "TFT, 6.5\", HD+",
                                      Camera = "Main: 12 MP & Others: 8 MP, 2 MP, 2 MP",
                                      OS = "Android 9.0 (Pie)",
                                      CPU = "Snapdragon 665 8 cores",
                                      RAM = 3,
                                      ROM = 64,
                                      SIM = "2 Nano SIM, Support 4G",
                                      Battery = 5000
                              },
                              new ProductSheet() {
                                      Name = "Samsung Galaxy A10s",
                                      Image = "Content/images/ProductSheet/2.jpg",
                                      Rating = 2,
                                      Price = 155,
                                      Screen = "IPS TFT, 6.2\", HD+",
                                      Camera = "Main: 13 MP & Second: 2 MP",
                                      OS = "Android 9.0 (Pie)",
                                      CPU = "MediaTek MT6762 8 cores (Helio P22)",
                                      RAM = 2,
                                      ROM = 32,
                                      SIM = "2 Nano SIM, Support 4G",
                                      Battery = 4000
                              },
                              new ProductSheet() {
                                      Name = "iPhone 11 64GB",
                                      Image = "Content/images/ProductSheet/3.jpg",
                                      Rating = 5,
                                      Price = 999,
                                      Screen = "IPS LCD, 6.1\", Liquid Retina",
                                      Camera = "Main: 12 MP & Second: 12 MP",
                                      OS = "iOS 13",
                                      CPU = "Apple A13 Bionic 6 cores",
                                      RAM = 4,
                                      ROM = 64,
                                      SIM = "1 eSIM & 1 Nano SIM, Support 4G",
                                      Battery = 3110
                              },
                              new ProductSheet() {
                                      Name = "Samsung Galaxy Fold",
                                      Image = "Content/images/ProductSheet/4.jpg",
                                      Rating = 5,
                                      Price = 1898,
                                      Screen = "Dynamic AMOLED 7.3\" & Super AMOLED 4.6\",
                                      QuadHD(2K)",
                                      Camera = "Main: 12 MP & Others: 12 MP, 16 MP",
                                      OS = "Android 9.0 (Pie)",
                                      CPU = "Snapdragon 855 8 cores",
                                      RAM = 12,
                                      ROM = 512,
                                      SIM = "1 eSIM & 1 Nano SIM, Support 4G",
                                      Battery = 4380
                              },
                              new ProductSheet() {
                                      Name = "Realme 5 (3GB/64GB)",
                                      Image = "Content/images/ProductSheet/5.jpg",
                                      Rating = 3.5,
                                      Price = 166,
                                      Screen = "IPS LCD, 6.5\", HD+",
                                      Camera = "Main: 12 MP & Others: 8 MP, 2 MP, 2 MP",
                                      OS = "Android 9.0 (Pie)",
                                      CPU = "Snapdragon 665 8 cores",
                                      RAM = 3,
                                      ROM = 64,
                                      SIM = "2 Nano SIM, Support 4G",
                                      Battery = 5000
                              },
                              new ProductSheet() {
                                      Name = "BlackBerry KEY2",
                                      Image = "Content/images/ProductSheet/6.jpg",
                                      Rating = 4.5,
                                      Price = 711,
                                      Screen = "IPS LCD, 4.5\", Full HD",
                                      Camera = "Main: 12 MP & Second: 12 MP",
                                      OS = "Android 8.1 (Oreo)",
                                      CPU = "Snapdragon 660 8 cores",
                                      RAM = 6,
                                      ROM = 64,
                                      SIM = "2 Nano SIM, Support 4G",
                                      Battery = 3500
                              },
                      };
              }
      }
      
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    Add a TransposeGrid control

    Complete the following steps to initialize a TransposeGrid control.

    Add a new Controller

    1. In the Solution Explorer, right click the folder Controllers.
    2. From the context menu, select Add | Controller. The Add Scaffold dialog appears.
    3. Complete the following steps in the Add Scaffold dialog:
      1. Select Empty MVC Controller template.
      2. Set name of the controller (for example: TransposeGridController).
      3. Click Add.
    4. Include the following MVC references:
      • using System.Web.Mvc;
      • using MVC_TransposedGrid.Models;
      Note: Replace MVC_TransposeGrid.Models; with <YourMVCApplicationName>.Models; in the references.
    5. Replace the method Index() with the following method.

      TransposeGridController.cs

      C#
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      public class TransposedGridController : Controller
      {
      // GET: TransposedGrid
      public ActionResult Index()
      {
      return View(ProductSheet.GetData());
      }
      }
      

    Add a View for the controller:

    1. From the Solution Explorer, expand the folder Controllers and double click the controller (for example: TransposeGridController) to open it.
    2. Place the cursor inside the method Index().
    3. Right click and select Add View. The Add View dialog appears.
    4. In the Add View dialog, verify that the View name is Index and View engine is Razor (CSHTML).
    5. Click Add. A view has been added for the controller.
    6. In the Solution Explorer, double click Index.cshtml to open it.
    7. Replace the default code of the Views\Index.cshtml file with the one given below to initialize a TransposeGrid control.
      CSHTML
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      @using C1.Web.Mvc.Grid
      @using C1.Web.Mvc.Fluent;
      @using MVC_TransposedGrid.Models
      
      @model IEnumerable<ProductSheet>
      @{
              var columns = new Action<ListItemFactory<Column, ColumnBuilder>>(bl =>
              {
                      bl.Add(cb => cb.Binding("Image").Header(" ").Align("center").Width("80"));
                      bl.Add(cb =>
                      cb.Binding("Name").Header("Model").Align("center").WordWrap(true));
                      bl.Add(cb =>
                      cb.Binding("Rating").Header("Rating").Align("center").Format("n1").Width("130"));
                      bl.Add(cb =>
                      cb.Binding("Price").Header("Price").Align("center").Format("c2").Width("120"));
                      bl.Add(cb =>
                      cb.Binding("Screen").Header("Screen").Align("center").WordWrap(true));
                      bl.Add(cb =>
                      cb.Binding("Camera").Header("Camera").Align("center").WordWrap(true));
                      bl.Add(cb =>
                      cb.Binding("OS").Header("OS").Align("center").WordWrap(true));
                      bl.Add(cb =>
                      cb.Binding("CPU").Header("CPU").Align("center").WordWrap(true).Width("150"));
                      bl.Add(cb =>
                      cb.Binding("RAM").Header("RAM").Align("center").Format("n0").Width("80"));
                      bl.Add(cb =>
                      cb.Binding("ROM").Header("ROM").Align("center").Format("n0").Width("80"));
                      bl.Add(cb =>
                      cb.Binding("SIM").Header("SIM").Align("center").WordWrap(true));
                      bl.Add(cb =>
                      cb.Binding("Battery").Header("Battery").Align("center").Format("n0").Width("80"));
              });
      }
      @(Html.C1().TransposedGrid<ProductSheet>
                      ()
                      .AutoGenerateRows(false)
                      .Id("theTransposedGrid")
                      .CssClass("product-sheet-grid")
                      .IsReadOnly(true)
                      .Bind(Model)
                      .HeadersVisibility(HeadersVisibility.Row)
                      .Rows(columns)
                      .ItemFormatter("formatItem")
                      .OnClientLoadedRows("loadedRows")
                      .Height(615)
      )
      
      <script>
              function loadedRows(grid) {
                      let g = grid;
                      g.columns.defaultSize = 210;
                      setTimeout(function () {
                      g.autoSizeColumn(0, true, 30);
                      g.autoSizeRows();
                      g.rows[0].height = 170;
                      });
              }
              
              function formatItem(panel, r, c, cell) {
                      if (panel.cellType == 1) {
                      let binding = panel.rows[r].binding || panel.columns[c].binding;
                      switch (binding) {
                              case 'Image':
                                      cell.innerHTML = '<img src="' + '@Url.Content("~/")' +
                                      cell.textContent + '" draggable="false"/>';
                              break;
                              case 'Name':
                                      cell.innerHTML = '<b>' + cell.innerHTML + '</b>';
                              break;
                              case 'Price':
                                      cell.innerHTML = '<span class="price">' + cell.innerHTML +
                                      '</span>';
                              break;
                              // rating as stars
                              case 'Rating':
                                      let rating = panel.getCellData(r, c, false) * 1,
                                      stars = Math.floor(rating),
                                      html = new Array(stars + 1).join('★');
                                      html = '<span class="rating">' + html + '</span>';
                                      if (rating > stars) {
                                      html += '<span class="star half">☆</span>';
                                      }
                                      cell.innerHTML = html;
                              break;
                              case 'RAM':
                              case 'ROM':
                                      cell.textContent += "GB";
                              break;
                              case 'Battery':
                                      cell.textContent += "mAh";
                              break;
                              }
                      }
              }
      </script>
      <style type="text/css">
              .product-sheet-grid {
                      max-height: 2000px;
              }
              .product-sheet-grid .wj-rowheaders .wj-cell {
                      text-transform: uppercase;
                      font-size: 80%;
              }
              .product-sheet-grid .wj-cell {
                      padding: 4px;
                      border-bottom: none;
              }
              .product-sheet-grid .wj-cell span.rating {
                      font-size: x-large;
                      color: #e7711b;
                      margin-right: 0;
              }
              .product-sheet-grid .wj-cell span.price {
                      font-weight: bold;
                      color: #d0021b;
              }
              .product-sheet-grid img {
                      max-width: 100%;
                      max-height: 100%;
              }
              .star {
                      font-size: x-large;
                      width: auto;
                      display: inline-block;
                      color: gray;
              }
              .star.half:after {
                      content: '\2605';
                      color: #e7711b;
                      margin-left: -20px;
                      width: 10px;
                      position: absolute;
                      overflow: hidden;
              }
      </style>
      

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    Build and Run the Project

    1. Click Build | Build Solution to build the project.
    2. Press F5 to run the project.

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    Limitations

    Some features available in a simple grid control or FlexGrid do not apply to the Transposed grid as it works differently with data. These features or limitations are listed below.