CSHARP

asp.net response.redirect new tab

protected void btnSave_Click(object sender, EventArgs e)
{
    ...//some code to insert records
    Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "openModal", "window.open('NewQuote.aspx?val= " + this.txtQuotationNo.Text + "' ,'_blank');", true);
}