display all unselected gridview data to a page with controls

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        // Your code to fetch data and bind the GridView
        DataTable dt = GetGridViewData(); // Replace this with your data retrieval logic
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // Get the data item from the current row
        DataRowView dataItem = (DataRowView)e.Row.DataItem;

        // Check if the row is not selected (You can use your own logic to determine unselected rows)
        // For example, if you have a boolean column named "IsSelected", you can check its value here
        bool isSelected = Convert.ToBoolean(dataItem["IsSelected"]);

        if (!isSelected)
        {
            // Populate the controls with unselected data
            txtColumn1.Text = dataItem["Column1"].ToString();
            txtColumn2.Text = dataItem["Column2"].ToString();
            // Populate more controls as needed
        }
    }
}