Solved

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

Posted on 2006-07-20
2
389 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
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

ScreenConnect 6.0 Free Trial

Discover new time-saving features in one game-changing release, ScreenConnect 6.0, based on partner feedback. New features include a redesigned UI, app configurations and chat acknowledgement to improve customer engagement!

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…
Just a quick little trick I learned recently.  Now that I'm using jQuery with abandon in my asp.net applications, I have grown tired of the following syntax:      (CODE) I suppose it just offends my sense of decency to put inline VBScript on a…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.

777 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