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Getting Started with the Signature

This tutorial explains how to set up a basic Telerik UI for ASP.NET MVC Signature component and highlights the major steps in the configuration of the component.

You will initialize a Signature component and change its line color. Then, you will use the events of the UI component.

Sample Telerik UI for ASP.NET MVC Signature

Prerequisites

To successfully complete the tutorial, you need a project that is already configured to use the Telerik UI for ASP.NET MVC components:

1. Prepare the CSHTML File

The first step is to add the required directives at the top of the .cshtml document:

  • To use the Telerik UI for ASP.NET MVC HtmlHelpers:

    @using Kendo.Mvc.UI
    

Optionally, you can structure the document by adding the desired HTML elements like headings, divs, paragraphs, and others.

 @using Kendo.Mvc.UI

<h4>Signature with Color</h4>
<div>

</div>

2. Initialize the Signature

Use the Signature HtmlHelper to add the component to a page:

  • The Name() configuration method is mandatory as its value is used for the id and the name attributes of the Signature element.
  • The Width() setting allows you to declare the width size of the component.
  • The Height() setting allows you to declare the height size of the component.
  • The Color() configuration allows you define the color of the Signature line.
 @using Kendo.Mvc.UI

<h4>Signature with Color</h4>
<div>
    @(Html.Kendo().Signature()
        .Name("signature")
        .Color("crimson")
        .Width(600)
        .Height(340))
</div>

3. Handle a Signature Event

The Signature component provides convenient events for implementing your desired logic. In this tutorial, you will use the exposed Change() event to log a new entry in the browser's console.

 @using Kendo.Mvc.UI

<script>
   function onChange() {
      console.log("Signature has changed!");
   }
</script>

<h4>Signature with Color</h4>
<div>
    @(Html.Kendo().Signature()
        .Name("signature")
        .Color("crimson")
        .Width(600)
        .Height(340)
        .Events(e => e.Change("onChange"))
    )
</div>

4. (Optional) Reference Existing Signature Instances

You can reference the Signature instances that you have created and build on top of their existing configuration:

  1. Use the id attribute of the component instance to establish a reference.

    <script>
        var signatureReference = $("#signature").data("kendoSignature"); // signatureReference is a reference to the existing Signature instance of the helper.
    </script>
    
  2. Use the Signature client-side API to control the behavior of the widget. In this example, you will use the enable method to disable the Signature.

    <script>
        var signatureReference = $("#signature").data("kendoSignature"); // signatureReference is a reference to the existing Signature instance of the helper.
        signatureReference.enable(false); 
    </script>
    

Next Steps

See Also

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