Solved

Populating DropDownlist in repeater based on value of other DropDownList in a repeater

Posted on 2013-06-18
3
338 Views
Last Modified: 2013-08-06
Hello,

I have a reserved seating app that needs to allow the user to define section, row, seat based on a database that contains a list of available seats. The repeater looks like this...

Ticket 1   [ddlSection]  [ddlRow]  [ddlSeat]
Ticket 2   [ddlSection]  [ddlRow]  [ddlSeat]
Ticket 3   [ddlSection]  [ddlRow]  [ddlSeat]

If the user selects section from Ticket1.ddlSection, the Ticket1.ddlRow should update based on available rows in the section. How do I handle this? Do I use the ItemCommand of the repeater? How do I get the "onselectedindexchanged" to fire within the repeater? Any help would be appreciated. Please include a little example code.
0
Comment
Question by:tatton777
3 Comments
 
LVL 12

Expert Comment

by:jitendra patil
ID: 39259010
can you post your code here, so we can review and extend it for your solution.
0
 
LVL 41

Accepted Solution

by:
guru_sami earned 500 total points
ID: 39261003
What you would be doing is add SelectedIndexChanged for the dropdownlists.
e.g. say these are two dropdownlists inside a repeater:
<asp:DropDownList ID="ddlCategory" runat="server" AppendDataBoundItems="false" DataSourceID="SqlDataSource5"
                     DataTextField="CategoryName" DataValueField="CategoryId" AutoPostBack="true" OnSelectedIndexChanged="ddlCategories_SelectedIndexChanged" >
                 </asp:DropDownList>

<asp:DropDownList ID="ddlProducts" runat="server" DataTextField="ProductName" DataValueField="ProductID" OnSelectedIndexChanged="ddlProducts_SelectedIndexChanged"></asp:DropDownList>

Here's the SelectedIndexchanged for two DDL:

//First DDL
protected void ddlCategories_SelectedIndexChanged(object sender, EventArgs e)
    {
        RepeaterItem row = (RepeaterItem)((sender) as Control).NamingContainer;

        // get the value from the first dropdownlist
        DropDownList ddlCategory = ((sender) as DropDownList);
        int categoryId = Convert.ToInt32(ddlCategory.SelectedValue);
       
        // Get Second dropdown and data for second dropdown passing the first selected value.

        DropDownList ddlProducts = row.FindControl("ddlProducts") as DropDownList;
        //Get data for second ddl and bind it.
        ddlProducts.DataSource =  GetSecondDDL DataBind using FirstDDL Selectedvalue;
        ddlProducts.DataBind();
    }
   //Second DDL
    protected void ddlProducts_SelectedIndexChanged(object sender, EventArgs e)
    {
         //Here you do the same as first but for third ddl.
    }

Open in new window

0
 
LVL 1

Author Comment

by:tatton777
ID: 39263841
Sweet. I'll plug this in to my code an let you now how it goes. Thanks!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Today is the age of broadband.  More and more people are going this route determined to experience the web and it’s multitude of services as quickly and painlessly as possible. Coupled with the move to broadband, people are experiencing the web via …
We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.
Many functions in Excel can make decisions. The most simple of these is the IF function: it returns a value depending on whether a condition you describe is true or false. Once you get the hang of using the IF function, you will find it easier to us…

911 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

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now