Add Connection String during installation of Windows Application

sir, How to connect another serever after make setup file of that code in c# for windows application

private void button1_Click(object sender, EventArgs e)
{
    Modify(txtName.Text, txtServer.Text, txtDataBase.Text, txtUID.Text, txtPassword.Text);
}
 
public void Modify(string name, string server, string dataBase, string uId, string password)
{
    string ApplicationPath = Application.StartupPath;
    string YourPath = Path.GetDirectoryName(ApplicationPath);
    bool isNew = false;
 
    string path = Path.GetDirectoryName(YourPath) + "\\App.config";
    XmlDocument doc = new XmlDocument();
    doc.Load(path);
    XmlNodeList list = doc.DocumentElement.SelectNodes(string.Format("connectionStrings/add[@name='{0}']", name));
    XmlNode node;
    isNew = list.Count == 0;
    if (isNew)
    {
        node = doc.CreateNode(XmlNodeType.Element, "add", null);
        XmlAttribute attribute = doc.CreateAttribute("name");
        attribute.Value = name;
        node.Attributes.Append(attribute);
 
        attribute = doc.CreateAttribute("connectionString");
        attribute.Value = "";
        node.Attributes.Append(attribute);
 
        attribute = doc.CreateAttribute("providerName");
        attribute.Value = "System.Data.SqlClient";
        node.Attributes.Append(attribute);
    }
    else
    {
        node = list[0];
    }
    string conString = node.Attributes["connectionString"].Value;
    SqlConnectionStringBuilder conStringBuilder = new SqlConnectionStringBuilder(conString);
    conStringBuilder.InitialCatalog = dataBase;
    conStringBuilder.DataSource = server;
    conStringBuilder.IntegratedSecurity = false;
    conStringBuilder.UserID = uId;
    conStringBuilder.Password = password;
    node.Attributes["connectionString"].Value = conStringBuilder.ConnectionString;
    if (isNew)
    {
        doc.DocumentElement.SelectNodes("connectionStrings")[0].AppendChild(node);
    }
    doc.Save(path);
}