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Scrolling in ASP.NET MVC Grid control

20 Oct 2021 / 2 minutes to read

The scrollbar will be displayed in the grid when content exceeds the element Width or Height. The vertical and horizontal scrollbars will be displayed based on the following criteria:

  • The vertical scrollbar appears when the total height of rows present in the grid exceeds its element height.
  • The horizontal scrollbar appears when the sum of columns width exceeds the grid element width.
  • The Height and Width are used to set the grid height and width, respectively.

The default value for Height and Width is auto.

Set width and height

To specify the Width and Height of the scroller in the pixel, set the pixel value to a number.

razor
width-height.cs
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@Html.EJS().Grid("Grid").DataSource((IEnumerable<object>)ViewBag.datasource).Height("400").Width("auto").Columns(col =>
{
  col.Field("OrderID").HeaderText("Order ID").Width("120").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("CustomerID").HeaderText("Customer Name").Width("150").Add();
  col.Field("OrderDate").HeaderText("Order Date").Width("130").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("Freight").HeaderText("Freight").Width("120").Format("C2").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("ShippedDate").HeaderText("Shipped Date").Width("140").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("ShipName").HeaderText("Ship Name").Width("150").Add();
  col.Field("ShipAddress").HeaderText("Ship Address").Width("170").Add();
  col.Field("ShipCity").HeaderText("Ship City").Width("170").Add();
  col.Field("ShipCountry").HeaderText("Ship Country").Width("150").Add();

}).Render()
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public IActionResult Index()
 {
   var orders = OrderDetails.GetAllRecords();
   ViewBag.datasource = orders;            
   return View();
 }

Responsive with parent container

Specify the Width and Height as 100% to make the grid element fill its parent container. Setting the Height to 100% requires the grid parent element to have explicit height.

razor
responsive-parent.cs
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@Html.EJS().Grid("Grid").DataSource((IEnumerable<object>)ViewBag.datasource).Height("100%").Width("auto").Columns(col =>
{
  col.Field("OrderID").HeaderText("Order ID").Width("120").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("CustomerID").HeaderText("Customer Name").Width("150").Add();
  col.Field("OrderDate").HeaderText("Order Date").Width("130").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("Freight").HeaderText("Freight").Width("120").Format("C2").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("ShippedDate").HeaderText("Shipped Date").Width("140").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
  col.Field("ShipName").HeaderText("Ship Name").Width("150").Add();
  col.Field("ShipAddress").HeaderText("Ship Address").Width("170").Add();
  col.Field("ShipCity").HeaderText("Ship City").Width("170").Add();
  col.Field("ShipCountry").HeaderText("Ship Country").Width("150").Add();

}).Render()
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public IActionResult Index()
 {
   var orders = OrderDetails.GetAllRecords();
   ViewBag.datasource = orders;            
   return View();
 }

Scroll to selected row

You can scroll the grid content to the selected row position by using the RowSelected event.

razor
scroll-selected-row.cs
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@Html.EJS().NumericTextBox("numeric").Placeholder("Enter index to select a row").Change("onChange").Width("200").Render()

@Html.EJS().Grid("Grid").DataSource((IEnumerable<object>)ViewBag.datasource).Height("400").Width("auto").Columns(col =>
{
   col.Field("OrderID").HeaderText("Order ID").Width("120").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("CustomerID").HeaderText("Customer Name").Width("150").Add();
   col.Field("OrderDate").HeaderText("Order Date").Width("130").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("Freight").HeaderText("Freight").Width("120").Format("C2").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("ShippedDate").HeaderText("Shipped Date").Width("140").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("ShipName").HeaderText("Ship Name").Width("150").Add();
   col.Field("ShipAddress").HeaderText("Ship Address").Width("170").Add();
   col.Field("ShipCity").HeaderText("Ship City").Width("170").Add();
   col.Field("ShipCountry").HeaderText("Ship Country").Width("150").Add();

}).RowSelected("rowSelected").Render()

<script>
    function onChange(args) {
        var gridObj = document.getElementById("Grid").ej2_instances[0];
        gridObj.selectRow(parseInt(this.getText(), 10));
    }

    function rowSelected(args) {
        var rowHeight = this.getRows()[this.getSelectedRowIndexes()[0]].scrollHeight;
        this.getContent().children[0].scrollTop = rowHeight * this.getSelectedRowIndexes()[0];
    }

</script>
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public IActionResult Index()
 {
   var orders = OrderDetails.GetAllRecords();
   ViewBag.datasource = orders;            
   return View();
 }

Hide the scrollbar when the content is not overflown

You can hide the scrollbar of Grid content by using the hideScroll method when the content doesn’t overflow its parent element.

In the following sample, we have invoked the hideScroll method inside the dataBound event.

razor
hide-scroll.cs
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@Html.EJS().Grid("Grid").DataSource((IEnumerable<object>)ViewBag.datasource).Height("400").Width("auto").Columns(col =>
{
   col.Field("OrderID").HeaderText("Order ID").Width("120").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("CustomerID").HeaderText("Customer Name").Width("150").Add();
   col.Field("OrderDate").HeaderText("Order Date").Width("130").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("Freight").HeaderText("Freight").Width("120").Format("C2").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
   col.Field("ShippedDate").HeaderText("Shipped Date").Width("140").Format("yMd").TextAlign(Syncfusion.EJ2.Grids.TextAlign.Right).Add();
}).DataBound("dataBound").AllowPaging().PageSettings(page=> { page.PageSize(2); }).Render()

<script>

    function dataBound() {
        var grid = document.getElementById('Grid').ej2_instances[0];
        grid.hideScroll();
    }

</script>
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public IActionResult Index()
 {
   var orders = OrderDetails.GetAllRecords();
   ViewBag.datasource = orders;            
   return View();
 }
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