Updating Grid Cell Dynamically based on the Values of Multiple Cells

Environment

Product	Telerik UI for ASP.NET MVC Grid
Progress Telerik UI for ASP.NET MVC version	Created with the 2023.3.1114 version

Description

How can I dynamically update a specified non-editable cell, whose value is a calculation based on other editable cells, when using Telerik UI for ASP.NET MVC Grid in InCell editable mode?

Solution

The InCell editable Grid contains the following columns:

• CreditAmount—An editable column.
• DebitAmount—A non-editable column.
• TransactionAmount—A non-editable column which value equals subtraction of the DebitAmount from the CreditAmount value (CreditAmount - DebitAmount).

Follow the next steps to update the TransactionAmount when the CreditAmount changes.

1. Add a custom class to the CreditAmount column and disable the TransactionAmount by using the k-disabled class.

       @(Html.Kendo().Grid<GridViewModel>()
           .Name("grid")
           .Columns(columns =>
           {
               columns.Bound(p => p.CreditAmount).HtmlAttributes(new { @class="creditAmountCell"});
               columns.Bound(p => p.DebitAmount);
               columns.Bound(p => p.TransactionAmount).HtmlAttributes(new { @class = "k-disabled", style = "opacity: 1"});                         
           })
           .Editable(e => e.Mode(GridEditMode.InCell))
           ...
           .DataSource(dataSource => dataSource
               .Ajax()
               .Model(m => 
               {
                   m.Id("OrderID");
                   m.Field(p => p.OrderID).Editable(false);
                   m.Field(p => p.DebitAmount).Editable(false);
               })
               ...
           )
       )
   

2. Handle the CellClose event of the Grid that triggers when a specified cell in edit mode is going to be closed.

3. Check if the closed cell contains the custom class of the CreditAmount column and if its value has changed.

4. Use set() method to update the TransactionAmount column.

       @(Html.Kendo().Grid<GridViewModel>()
           .Name("grid")
           .Events(ev => ev.CellClose("onCellClose"))
           ...
       )
   

       <script>
           function onCellClose(e) {
               var closedCreditAmountCell = $(e.container).hasClass("creditAmountCell");
               if (closedCreditAmountCell && e.model.dirtyFields["CreditAmount"] == true) { // Check if "CreditAmount" cell is updated.
                   let creditAmountValue = e.model.CreditAmount; // Get the new CreditAmount value.
                   let debitAmountValue = e.model.DebitAmount; // Get the respective DebitAmount value.
                   setTimeout(() => {
                       e.model.set("TransactionAmount", (creditAmountValue - debitAmountValue)); // Update the "TransactionAmount" cell.
                   }, 100);
               }
           }
       </script>
   

More ASP.NET MVC Grid Resources

• ASP.NET MVC Grid Documentation

• ASP.NET MVC Grid Demos

• ASP.NET MVC Grid Product Page

• Telerik UI for ASP.NET MVC Video Onboarding Course (Free for trial users and license holders)

• Telerik UI for ASP.NET MVC Forums

See Also

• Client-Side API Reference of the Grid for ASP.NET MVC

• Server-Side API Reference of the Grid for ASP.NET MVC

• Telerik UI for ASP.NET MVC Breaking Changes

• Telerik UI for ASP.NET MVC Knowledge Base