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

x
?
Solved

Hide/Show Panel Control based on DropDownList value

Posted on 2013-01-18
5
Medium Priority
?
2,943 Views
Last Modified: 2013-01-18
Hello Experts,

I need to show/hide a Panel Control on my web form based on the selected value selected from the DropDownList control. So for example if the user selects the value "Switch" from my DropDownList Control then I need to show the Panel Control called "pnlSwitch" and hide the rest of the Panel Controls. I remember doing this before but cannot find my documentation. Please help?? I know I need to add "SelectedIndexChanged" to the DropDownList control but not sure what to do after that :(

DropDownList Values:
70   Server
71   Switch
72   Modem

Panel Controls:
pnlServer
pnlSwitch
pnlModem
0
Comment
Question by:asp_net2
[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
  • 3
  • 2
5 Comments
 
LVL 20

Expert Comment

by:informaniac
ID: 38793753
pnlServer.Visible = false;
pnlSwitch.Visible = false;
pnlModem.Visible = false;
switch(ddl.SelectedText)
{
        case "Server":

                pnlServer.Visible = true;
                break;
                
}

Open in new window

0
 
LVL 4

Author Comment

by:asp_net2
ID: 38793890
Hi informaniac,

That worked out great. I had to modify it a little, see below but thank you. There is just one more question to ask. Could this have also been achieved using an "if" statement? If so, how? and why did you not use it here? Only asking so I understand.

Code:
    protected void ddlChooseClass_SelectedIndexChanged(object sender, EventArgs e)
    {
        switch (ddlChooseClass.SelectedItem.Text)
        {
            case "Server":

                pnlServer.Visible = true;
                break;
        }
    }

Markup:
<asp:DropDownList ID="ddlChooseClass" CssClass="ddl" OnSelectedIndexChanged="ddlChooseClass_SelectedIndexChanged" AutoPostBack="true" runat="server"></asp:DropDownList>
0
 
LVL 4

Author Comment

by:asp_net2
ID: 38793895
Also, how do I add multiple values such as Switches, Routers, Printers, etc.. to the switch statement?
0
 
LVL 20

Accepted Solution

by:
informaniac earned 2000 total points
ID: 38794093
You can use an If statement also. I used a switch only cause of code clarity. It's upto the developer how he prefers...

protected void ddlChooseClass_SelectedIndexChanged(object sender, EventArgs e)
    {
        pnlServer.Visible = false;
        pnlPrinter.Visible = false;
        switch (ddlChooseClass.SelectedItem.Text)
        {
            case "Server":

                pnlServer.Visible = true;
                break;
            case "Printers":
                pnlPrinter.Visible = true;
                break;
        }
    }

Open in new window


protected void ddlChooseClass_SelectedIndexChanged(object sender, EventArgs e)
{
        pnlServer.Visible = false;
        pnlPrinter.Visible = false;
        string strSelectedText = ddlChooseClass.SelectedItem.Text;
        if(strSelectedText == "Printers")
        {
               pnlPrinter.Visible = true;
        }
        else if(strSelectedText == "Servers")
        {
                pnlServer.Visible = true;
        }
}

Open in new window

0
 
LVL 4

Author Closing Comment

by:asp_net2
ID: 38794163
Thank you very much for your help and explanations.
0

Featured Post

What is a Denial of Service (DoS)?

A DoS is a malicious attempt to prevent the normal operation of a computer system. You may frequently see the terms 'DDoS' (Distributed Denial of Service) and 'DoS' used interchangeably, but there are some subtle differences.

Question has a verified solution.

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

More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
In this video, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…

721 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