ASP.NET

Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
     Response.Redirect("ThisPage.aspx?showtext=text")
End Sub

Sub Label1_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles Label1.PreRender
     If Request.QueryString("showtext") <> Nothing Or Request.QueryString("showtext") <> "" Then
         Label1.Text = request.QueryString("showtext")
     End If
End Sub

Sub Button1_Click(ByVal sender As Object, byVal e As System.EventArgs) Handles Button1.Click
     Response.Redirect("ThisPage.aspx?imageloc=image1.png")
End Sub

Sub PictureBox1_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles PictureBox1.PreRender
     If Request.QueryString("imageloc") <> Nothing Or Request.QueryString("imageloc") Then
          PictureBox1.ImageLocation = Request.QueryString("imageloc")
     End If
End Sub

public string GetImagePath()
{
     switch (ddlsunsign.Text) {
          case Aries:
               return "../../DesignTier/SignImages/ariesstat.jpg";
          case Aquarius:
               return "../../DesignTier/SignImages/aquariusstat.jpg";
          //case Libra, Pisces,...
          case default:
               return null;
     }
}
public string GetStat()
{
      switch (ddlsunsign.text) {
           case Aries:
                return //database code
           //etc
           case default:
                return null;
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
     if (GetImagePath()!=null&&GetStat()!=null) {
          Response.Redirect("ThisPage.aspx?imageloc=\"" + GetImagePath + "\"&text=\"" + GetStat() + "\"");
     }
}
protected void descriptionLabel_PreRender(object sender, EventArgs e)
{
     if (Request.QueryString("text")!=null) { 
           descriptionLabel.Text = Request.QueryString;
     }
     else {
           descriptionLabel.Text = "Error";
     }
}
protected void signImage_PreRender(object sender, EventArgs e)
{
     if (Request.QueryString("imageloc")!=null) {
          signImage.ImageLocation = Request.QueryString("imageloc");
     else {
          signImage.ImageLocation = //friendly error message;
     }
}

protected void button1_Click(Object sender, EventArgs e) {
     Response.Redirect("ThisPage.aspx?showtext=text&imageloc=loc");
}
protected void label1_PreRender(object sender, EventArgs e) {
     if (Request.QueryString("showtext")!=null||Request.QueryString("showtext")!="") {
           label1.Text = request.QueryString("showtext");
     }
}
protected void pictureBox1_PreRender(object sender, EventArgs e) {
     if (Request.QueryString("imageloc")!=null||Request.QueryString("showtext")!="") {
            pictureBox1.ImageLocation = Request.QueryString("imageloc");
     }
}