Creating a Custom Edit Popup Template for Telerik ASP.NET Core Grid

 Certainly! Here's an example of how you can create a custom edit popup template for the Telerik ASP.NET Core Grid control:

1. First, make sure you have the necessary dependencies installed. You will need the Telerik UI for ASP.NET Core package. You can install it via NuGet by running the following command in the Package Manager Console:

Install-Package Telerik.UI.for.AspNet.Core

2. In your ASP.NET Core project, open the view where you want to use the Grid control and add the necessary using directives:

@using Kendo.Mvc.UI
@using Kendo.Mvc.UI.Fluent

3. Add the Grid control to your view, and configure it to use a custom edit popup template:

@(Html.Kendo().Grid<YourModel>()
    .Name("grid")
    .Columns(columns =>
    {
        // Add your grid columns here
        columns.Bound(p => p.Id).Width(100);
        columns.Bound(p => p.Name).Width(200);
        // Add more columns as needed
    })
    .ToolBar(toolbar =>
    {
        toolbar.Create();
        toolbar.Save();
    })
    .Editable(editable => editable.Mode(GridEditMode.PopUp).TemplateName("CustomEditTemplate"))
    .DataSource(dataSource => dataSource
        .Ajax()
        .Model(model =>
        {
            model.Id(p => p.Id);
            // Add other model fields as needed
        })
        .Create(update => update.Action("Create", "YourController"))
        .Read(read => read.Action("Read", "YourController"))
        .Update(update => update.Action("Update", "YourController"))
        .Destroy(update => update.Action("Delete", "YourController"))
    )
)

4. Create the custom edit popup template. In your Views folder, create a new folder named "Shared" (if it doesn't exist already). Inside the "Shared" folder, create a new view named "CustomEditTemplate.cshtml".

5. Open the "CustomEditTemplate.cshtml" file and define your custom edit popup template markup:

@model YourModel

<div class="k-edit-label">
    <label for="Name">Name:</label>
</div>
<div class="k-edit-field">
    <input type="text" id="Name" name="Name" class="k-input k-textbox" value="@Model.Name" />
</div>

<!-- Add more fields as needed -->

<script>
    function onDataBound(e) {
        // Additional logic or JavaScript code to execute after the popup is bound
    }
</script>

In the template above, I've provided an example with a single field, "Name". You can add more fields according to your model's properties.

6. Finally, make sure you have the necessary controller actions ("Create", "Read", "Update", "Delete") in your controller to handle the CRUD operations for your model.

That's it! You now have a custom edit popup template for the Telerik ASP.NET Core Grid. When you click the "Edit" button in the grid, the popup will display your custom template with the appropriate fields.