Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

how to get dropdown value on page load

Posted on 2014-04-14
2
Medium Priority
?
683 Views
Last Modified: 2014-04-15
I have a drop down value that gets populated via sql. How do I get the value of the drop down to appear on page load?

protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {

            lblErrMsg.Visible = false;
            string selectSql = "SELECT * FROM tblassets INNER JOIN tblassetcustom ON tblassets.assetid=tblassetcustom.assetid Left JOIN tblsystemenclosure  ON tblassetcustom.assetid=tblsystemenclosure.assetid";
            selectSql += " Where tblassets.assetid=" + DropDownList7.SelectedValue;
            // Response.Write(selectSql);


            SqlConnection myConnection = new SqlConnection();
            myConnection.ConnectionString = ConfigurationManager.ConnectionStrings["la"].ConnectionString;
            SqlCommand myCommand = new SqlCommand(selectSql, myConnection);
            SqlDataReader myReader;





            try
            {
                myConnection.Open();
                myReader = myCommand.ExecuteReader();



                myReader.Read();

                cname.Text = myReader["assetname"].ToString();
                ipaddr.Text = myReader["ipaddress"].ToString();
                lanid.Text = myReader["assetid"].ToString();
                lanid2.Value = myReader["assetid"].ToString();
                cmodel.Text = myReader["model"].ToString();
                txt_dept.Text = myReader["department"].ToString();
                txt_domain.Text = myReader["dnsname"].ToString();
                cserial.Text = myReader["serialnumber"].ToString();
                txt_assettag.Text = myReader["smbiosassettag"].ToString();
                txt_installer.Text = HttpContext.Current.Request.ServerVariables["AUTH_USER"].ToString();


            }
            catch (Exception err)
            {
                lblErrMsg.Text = "Error: " + err.ToString();
            }

            finally
            {
                myConnection.Close();
            }


        }

Open in new window


markup
<asp:DropDownList ID="DropDownList7" runat="server" 
             DataSourceID="SqlDataSource4" DataTextField="assetid" 
             DataValueField="assetid" AutoPostBack="True" AppendDataBoundItems="true"
     OnSelectedIndexChanged="DropDownList7_SelectedIndexChanged"  >
 

        </asp:DropDownList>

Open in new window

0
Comment
Question by:cseink
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 40

Accepted Solution

by:
Kyle Abrahams earned 2000 total points
ID: 40000159
//ensure the list is loaded
SqlDataSource4.DataBind();

DropDownList7.SelectedIndex = DropDownList7.Items.IndexOf(DropDownList7.Items.FindByValue(myreader["assetid"].ToString()));
0
 

Author Closing Comment

by:cseink
ID: 40001483
thank you.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Lots of people ask this question on how to extend the “MembershipProvider” to make use of custom authentication like using existing database or make use of some other way of authentication. Many blogs show you how to extend the membership provider c…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question