We help IT Professionals succeed at work.
Get Started

Accessing Controls Buried Inside Other Controls

Carla Romere
Carla Romere asked
on
71 Views
Last Modified: 2016-08-04
I have inherited a project created by someone who no longer works at my company. We are trying to make some modifications in how the application works and I have hit a snag.

I have a formview with the following structure:
<ContentPlaceHolder>
     <table>
          <tr>
               <td>
                    <asp:FormView>
                         <InsertItemTemplate>
                              <ddlSelectDistributor>
                                   <ddlDistributor>

I want to select a value in <ddlSelectDistributor> and have that populate the dropdown <ddlDistributor> to narrow down the choices the user has to scroll through to find their desired Distributor.

I have autopostback turned on for <ddlSelectDistributor>. Once they have selected a Distributor in <ddlDistributor>, I want to populate a few label fields all within the same <InsertItemTemplate>.

I've tried all the tricks I know to try but can't get the controls to see each other. I have moved the <SqlDataSource> to inside the <InsertItemTemplate> as suggested in one of my searches, but it's just not working yet.

On the <ddlSelectDistributor.OnSelectedIndexChanged> event, I have the following code currently:

    protected void ddlSelectDistributor_SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList mySD = (DropDownList)FormView1.FindControl("ddlSelectDistributor");
        DropDownList myDist = (DropDownList)FormView1.FindControl("ddlDistributor");
        SqlDataSource sqlDist = (SqlDataSource)FormView1.FindControl("sqlDistributors");
        
        if (mySD.SelectedValue == "1144")
        {
            sqlDist.SelectCommand="SELECT CUSTOMER_NUMBER + '-' + LOCATION AS CUSTOMER_NUM, CUSTOMER_NAME + ' - ' + CASE SYS_STATE WHEN ' ' THEN SYS_PROVINCE ELSE SYS_STATE END + ' ' + SYS_POSTAL_CODE + ' - ' + SYS_ADDRESS_1 AS Location FROM VW_CUSTOMER_ADDRESSES WHERE (CUSTOMER_NUMBER = '1144') ORDER BY CUSTOMER_NUMBER, LOCATION";

            myDist.DataBind();
        }

        if (mySD.SelectedValue == "2335")
        {
            sqlDist.SelectCommand="SELECT CUSTOMER_NUMBER + '-' + LOCATION AS CUSTOMER_NUM, CUSTOMER_NAME + ' - ' + CASE SYS_STATE WHEN ' ' THEN SYS_PROVINCE ELSE SYS_STATE END + ' ' + SYS_POSTAL_CODE + ' - ' + SYS_ADDRESS_1 AS Location FROM VW_CUSTOMER_ADDRESSES WHERE (CUSTOMER_NUMBER = '2335') ORDER BY CUSTOMER_NUMBER, LOCATION";

            myDist.DataBind();
        }
        
    }

Open in new window


Then on the <ddlDistributor_SelectedIndexChanged> event, there is the following code:

   protected void ddlDistributor_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (((DropDownList)FormView1.Row.FindControl("ddlDistributor")).SelectedIndex == 0)
        {
            return;
        }
        string storeNbr = ((DropDownList)FormView1.Row.FindControl("ddlDistributor")).Text;
        if (storeNbr.Length > 0)
        {
            sqlSelectedDistributor.SelectParameters["CUSTOMER_NUMBER"].DefaultValue = storeNbr;
            DataView dv = (DataView)sqlSelectedDistributor.Select(DataSourceSelectArguments.Empty);
            if (dv.Table.Rows.Count == 1)
            {
                ((TextBox)FormView1.Row.FindControl("DistributorTextBox")).Text = Util.BlankForNull(dv.Table.Rows[0].ItemArray[0]);
                ((Label)FormView1.Row.FindControl("lblAddress")).Text = Util.BlankForNull(dv.Table.Rows[0].ItemArray[1]);
                ((Label)FormView1.Row.FindControl("lblStoreCSZ")).Text = Util.BlankForNull(dv.Table.Rows[0].ItemArray[2]);
                ((Label)FormView1.Row.FindControl("lblStorePhone")).Text = Util.BlankForNull(dv.Table.Rows[0].ItemArray[3]);
                ((Label)FormView1.Row.FindControl("lblStoreFax")).Text = Util.BlankForNull(dv.Table.Rows[0].ItemArray[4]);
            }
        }
        ((DropDownList)FormView1.Row.FindControl("ddlRAIssuedBy")).Focus();
    }

Open in new window


Any suggestions would be greatly appreciated.
Comment
Watch Question
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE