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I am creating a web page with collapsible grid, so my gridview is nested and can be expanded/collapsed when the plus sign is clicked.

Now, I need to highlight the row in line with the plus sign only (not including the expanded div)

I used client side onclick event for the gridview row which I assign the onclick value on datarowbound.

var prevRowIndex;

       function ChangeRowColor(row, rowIndex) {
           var parent = document.getElementById(row);
           var currentRowIndex = parseInt(rowIndex) + 1;

           if (prevRowIndex == currentRowIndex) {
           } else if (prevRowIndex != null) {
               parent.rows[prevRowIndex].style.backgroundColor = "#FFFFFF";

           parent.rows[currentRowIndex].style.backgroundColor = "#FFFFD6";
           prevRowIndex = currentRowIndex;

Here's the rowbound

protected void gvStudent_RowDataBound(object sender, GridViewRowEventArgs e)
            if (e.Row.RowType == DataControlRowType.DataRow)
                e.Row.Attributes.Add("onclick", string.Format("ChangeRowColor('{0}','{1}');", e.Row.ClientID, e.Row.RowIndex));

My problem is that when row index 0 is expanded and I click on the row index 1, the expanded div of row index 0 gets highlighted, I think because it is being read as a new row and becomes row index 1

What I have tried:

This idea I adapted from the link below

Highlight GridView Row On Click And Retain Selected Row On Postback[^]
Updated 15-Sep-20 16:05pm

1 solution

Worked it out by using this

var currentRowIndex = parseInt(rowIndex) + (parseInt(rowIndex) + 1);

           if (rowIndex == 0) {
               currentRowIndex = parseInt(rowIndex) + 1;

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