Скачать или смотреть How to Accurately Count Clicked Rows in a Kendo Grid, Excluding Group Names

Discover the efficient way to calculate the clicked row count in a Kendo Grid while excluding group names. Enhance your JavaScript and jQuery skills today!
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Accurately Counting Clicked Rows in a Kendo Grid

When working with Kendo Grid, one common challenge developers face is accurately counting the number of clicked rows, particularly when groups are involved. If you’ve marked and clicked items in a Kendo Grid, you may have noticed that the row count includes group headers. This can lead to confusion and incorrect data handling. In this guide, we'll explore a clear and effective solution to count clicked rows while omitting group names.

The Problem at Hand

Imagine you have a Kendo Grid displaying various data items organized into groups. For example, if your grid has 10 items under three different groups and you click on the last row, you might be surprised to find that your count returns a value of 12. This number reflects the total number of rows, including the headers of the groups. To ensure you're only counting the relevant data rows, we need a strategy to filter out the group names.

Code Overview

Initially, you may have used the following code to try and get the row index of the clicked item:

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

However, this code doesn't accurately calculate the clicked row count because it includes group headers in the total. Let's explore a reliable alternative solution.

The Solution

Here’s an improved approach that ensures we count only the data rows by excluding group names when clicking on a row in the Kendo Grid.

Step-by-Step Implementation

Initialize the Kendo Grid: Make sure you have created your Kendo Grid and have access to it via jQuery.

Retrieve Data Rows: Use the items() function to gather all the actual data rows. This excludes group headers as they are not part of the dataRows collection.

Select the Clicked Row: Get the currently selected row and its corresponding UID (Unique Identifier).

Find the Row Index: Finally, calculate the row index based solely on the data rows.

Here’s the complete code snippet:

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

Explanation of the Code

$("# daGrid").data("kendoGrid"): This retrieves the Kendo Grid instance.

grid.items(): This method returns only the data rows, excluding group headers.

grid.select()[0].dataset.uid: Retrieves the UID of the clicked row.

grid.dataSource.getByUid(uid): Allows you to obtain the specific item associated with the UID.

dataRows.index(grid.select()): Finally, this line returns the index of the clicked row from the filtered list of data rows.

Conclusion

By following the steps outlined above, you can accurately determine the clicked row count in your Kendo Grid without including group names. This not only streamlines your data handling but also improves your application's user experience. So, apply this solution in your Kendo Grid implementation and enhance your JavaScript and jQuery skills!

If you encounter any issues or have further questions, feel free to reach out. Happy coding!