Solved

ASP.NET 2.0/C#: Setting default selected item of a dynamically generated dropdownlist?

Posted on 2006-07-20
2
393 Views
Last Modified: 2008-01-09
Hello experts!

I am working on web app in asp.net 2.0 and I have stumbled across a problem.

I have a page with a dropdownlist on it, which has an object data source based on the content of a MySql table.

Now, on this page, the user can select, say, an invoice from a dropdownlist.
When the user selects a dropdownlist and presses the "select" button, the 2nd dropdownlist which is also generated from a table, is filled with customers.

Basically, a user selects an invoice that he wants to edit, and then the rest of the page appears with textboxes and dropdownlists that contain the data of the invoice.

I've gotten as far as being able to fillthe textboxes with the invoice data by using:

DataSet ds = ModuleOrders.GetOrder(Order_ID);
        lblBeginDatDA.Text = ds.Tables[0].Rows[0]["Begindatum"].ToString();

ModuleOrder.GetOrder(Order_ID); is a function which gets the invoice data from the database based on the Order_ID which is tied to the first dropdownlist.

This module also returns the customer associated with the selected invoice.

Is it possible to default the 2nd dropdownlist's initially selected index to the customer field in the dataset? I am thinking of something like this:

DropDownListCustomers.InitiallySelectedValue = ds.Tables[0].Rows[0]["Customer"].ToString();

Does anyone know the correct function and syntax to set the initially selected value of a dropdownlist?

Much thanks!

Regards,

Robert
0
Comment
Question by:DarkXiphoid
[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 21

Accepted Solution

by:
MogalManic earned 500 total points
ID: 17145012
you can either use
  DropDownListCustomers.SelectedValue=ds.Tables[0].Rows[0]["Customer"].ToString();

OR

ListItem item=DropDownListCustomers.Items.FindByValue(ds.Tables[0].Rows[0]["Customer"].ToString());
if (item!=null) {
  DropDownListCustomers.SelectedIndex = -1;  //Unselect currently selected item
  item.Selected=true;
} else {
  //Not found...
}
0
 
LVL 4

Author Comment

by:DarkXiphoid
ID: 17145393
Awesome,

the first method didn't work, but the second method worked!

Thanks alot.
0

Featured Post

[Webinar] How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

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…
ASP.Net to Oracle Connectivity Recently I had to develop an ASP.NET application connecting to an Oracle database.As I am doing it first time ,I had to solve several problems. This article will help to such developers  to develop an ASP.NET client…
This is a high-level webinar that covers the history of enterprise open source database use. It addresses both the advantages companies see in using open source database technologies, as well as the fears and reservations they might have. In this…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

729 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