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Learn how to retrieve the selected row's ID from a GridView in ASP.NET using JavaScript, making your editing features intuitive and efficient.
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How to Get GridView Selected Row DataKey in JavaScript

When working with ASP.NET, the GridView control is a powerful way to display data. However, one common challenge developers face is retrieving information from the selected row in order to perform actions, such as editing. This guide will provide a step-by-step solution to getting the selected row’s ID in JavaScript, enabling you to edit records effectively.

The Problem: Retrieving the Selected ID

You might have a GridView set up to display various records. When a user selects a row and clicks an "Edit" button, you want to pull the ID of that specific row to pre-fill a popup for editing. The JavaScript code behind this process requires you to somehow obtain the ID of the selected row. Let’s break this down step by step.

Solution Overview

To retrieve the selected row's ID, you will create a hidden field within your GridView, set up row selections using JavaScript, and finally use that data to direct users to an editing page. Follow the steps below to achieve this:

Step 1: Create a Hidden Field in the GridView

The first step in this process is to add a hidden field in your GridView. This field will hold the ID you wish to work with.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Add Row Data Binding Logic

Next, you will implement logic in the OnRowDataBound event of your GridView. This code enables row selection by attaching a click event that stores the row index.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: JavaScript Logic for Editing

Now, you will implement JavaScript functions to handle the selected index and construct the proper edit URL. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

Understanding the JavaScript Functions

onGridViewRowSelected(rowIndex): This function sets a global variable to keep track of the user's selected row index.

editItem(): This function constructs the URL using the stored row index to retrieve the ID from the hidden field and opens the editing page.

Conclusion

Following these steps will successfully allow you to retrieve the selected row’s ID from a GridView in ASP.NET using JavaScript. This makes your editing feature not only functional but also user-friendly. When users click to edit a record, the correct data will be passed effortlessly, creating a seamless experience.

Works a treat! Now you can enhance your ASP.NET applications with this effective solution for managing data in a GridView.