troubleshooting Question

Having problems either sending or receiving values from a hidden field.

Avatar of steelsanc
steelsanc asked on
ASP.NETJScript
24 Comments1 Solution375 ViewsLast Modified:
So, I'm fairly new to asp.net and I wanted to pass from values from a javascript function (called in code behind) to the server side.  I have the javascript function in a .js file.  Upon further research online, I found a way through hidden fields.  I declared a hidden field and the code looks like it's fine (obviously it's not) but it is still not receiving the values from the hidden field.  Can you all take a look at my code and tell me what is wrong?
code in aspx:
 
<asp:HiddenField ID="ContentType" runat="server" />
 
 
code behind:
 
public partial class _Default : System.Web.UI.Page 
{
    public void Page_Load(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection();
        con.ConnectionString = ConfigurationManager.ConnectionStrings["SalesDBConnectionString"].ToString();
        con.Open();
 
        SqlDataReader read;
 
        SqlCommand cmdtest = new SqlCommand("SELECT * FROM Details_Instructor", con);
        cmdtest.CommandType = CommandType.Text;
        read = cmdtest.ExecuteReader();
 
        ArrayList myArrList = new ArrayList();
 
        try
        {
            while (read.Read())
            {
                myArrList.Add(read["InstructorPhone"].ToString());
            }
 
            for (int i = 0; i <= 10; i++)
            {
                var testString = myArrList[i].ToString();
                TextBox1.Text += (testString + '\n');
                
                ClientScript.RegisterClientScriptBlock(typeof(Page), "formValidation", "isValidPhoneNumber('" + testString + "', true, true)", true);
 
                string testHiddenField = Request.Form["ContentType"];
 
                TextBox3.Text += testHiddenField;
            }
        }
        catch (SqlException ex)
        {
            TextBox2.Text = ex.ToString();
        }
        finally
        {
            read.Close();
            con.Close();
            TextBox3.Text += "End";
        }
    }
 
    public void Button1_Click(object sender, EventArgs e)
    {
 
    }
}
 
 
last part of code from the javascript file where I try to pass a value (newPhone):
 
        var myTextBox = document.getElementById("ContentType"); 
        myTextBox = newPhone;
 
Am I doing something wrong with how I assign a value to the hidden field?
ASKER CERTIFIED SOLUTION
sunithnair

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