c# anp.net grid view

To add vertical lines between the columns in your ASP.NET GridView, you can make use of CSS styles by defining a style class for the cells in the GridView columns. Here's how you can modify your existing code to achieve the desired effect:

1. Add a CSS class to your GridView columns to specify the border style:

2. Apply the CSS class to the cells in your GridView columns:

By adding the CSS class "gridViewCell" to your GridView cells, you can specify a right border style to create the vertical lines between the columns. This approach overrides the default GridLines setting of the GridView, allowing for more customizable styling.

I hope this solution helps resolve the issue you are facing with displaying vertical lines in your GridView. Let me know if you encounter any further challenges or need additional assistance!