Passing Date and Time Value between two pages

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C#

ASP.NET

thanks a lot i have done it and ,how to pass the date and time from one asp page to the other.

this is my emp.aspx page

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        GridViewRow row = GridView1.SelectedRow;
        
        String dt = GridView1.SelectedRow.Cells[1].Text;
        String sal = GridView1.SelectedRow.Cells[2].Text;
       
        Response.Redirect("empupdate.aspx?dt=" + dt + "&sal=" +sal);
     }

my second file empupdate.aspx

protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            
            TextBox3.Text = Page.Request.QueryString["dt"].ToString();
            TextBox4.Text = Page.Request.QueryString["sal"].ToString();
            
            
        }
    }

what i need to change to get the date and time value in the texbox3 of the empupdate.aspx