Code to add times to dropdownlist

[Cirene]

I have a dropdownlist. I want to fill it with times (using vb.net code).

I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
incrementing every half hour.

I know I could type in the values manually but something tells me that I
could loop thru a time variable and add 1/2 hr, etc... then add it in a
loop. (More efficient.)

Any coders want to give this a shot? The less code the better. Thanks!

[sloan]

Re: Code to add times to dropdownlist



myDDL.Items.Add (new ListItem ("Something1 ", "Something2 ") );

You can write a loop to go through the items.

for(int i = 8 ; i <= 17 ; i ++ )
{
for (int j = 0 ; j < 2 ; j ++ )
{

//now you have
//8 and 0 ( "8:00" )
//8 and 1 (" 8:30")
string hourAndMinute = Convert.ToStrin g(i);
if(j == 0)
{
hourAndMinute += ":00";

}
else
{
hourAndMinute +=":30";
}

myDDL.Items.Add (new ListItem ( hourAndMinute , hourAndMinute ) );
}

}


I'll leave it to you for the AM PM. And the convert (from) military time
hours.

But that should get you started.


"Cirene" <cirene@nowhere .comwrote in message
news:e2z2QFD7IH A.3696@TK2MSFTN GP04.phx.gbl...

>I have a dropdownlist. I want to fill it with times (using vb.net code).
>
I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
incrementing every half hour.
>
I know I could type in the values manually but something tells me that I
could loop thru a time variable and add 1/2 hr, etc... then add it in a
loop. (More efficient.)
>
Any coders want to give this a shot? The less code the better. Thanks!
>

[Cirene]

Re: Code to add times to dropdownlist

Thanks. So that I do not have to do too much conversion I was wondering if
there was a way to have a time variable of 8:00 AM and just add 30 min to it
over and over again until you reach 5:30 PM. Hmmm...

"sloan" <sloan@ipass.ne twrote in message
news:%23ty78OD7 IHA.3480@TK2MSF TNGP03.phx.gbl. ..

>
>
myDDL.Items.Add (new ListItem ("Something1 ", "Something2 ") );
>
You can write a loop to go through the items.
>
for(int i = 8 ; i <= 17 ; i ++ )
{
for (int j = 0 ; j < 2 ; j ++ )
{
>
//now you have
//8 and 0 ( "8:00" )
//8 and 1 (" 8:30")
string hourAndMinute = Convert.ToStrin g(i);
if(j == 0)
{
hourAndMinute += ":00";
>
}
else
{
hourAndMinute +=":30";
}
>
myDDL.Items.Add (new ListItem ( hourAndMinute , hourAndMinute ) );
}
>
}
>
>
I'll leave it to you for the AM PM. And the convert (from) military time
hours.
>
But that should get you started.
>
>
"Cirene" <cirene@nowhere .comwrote in message
news:e2z2QFD7IH A.3696@TK2MSFTN GP04.phx.gbl...

>>I have a dropdownlist. I want to fill it with times (using vb.net code).
>>
>I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
>incrementing every half hour.
>>
>I know I could type in the values manually but something tells me that I
>could loop thru a time variable and add 1/2 hr, etc... then add it in a
>loop. (More efficient.)
>>
>Any coders want to give this a shot? The less code the better. Thanks!
>>

>
>

[Mark Rae [MVP]]

Re: Code to add times to dropdownlist

"Cirene" <cirene@nowhere .comwrote in message
news:ew0%23xWD7 IHA.1428@TK2MSF TNGP06.phx.gbl. ..

Thanks. So that I do not have to do too much conversion I was wondering
if there was a way to have a time variable of 8:00 AM and just add 30 min
to it over and over again until you reach 5:30 PM. Hmmm...

Absolutely!

1) Declare the starting DateTime variable

2) Set up a while (...) loop

3) Use the .AddMinutes(30) variable to increment the DateTime variable

4) Add a new ListItem each time through the loop.


--
Mark Rae
ASP.NET MVP

http://www.markrae.net

[sloan]

Re: Code to add times to dropdownlist


Right ohh.

But if you knew that (OP), then just let 'er fly (code it up) !





"Mark Rae [MVP]" <mark@markNOSPA Mrae.netwrote in message
news:%23T1qndD7 IHA.1080@TK2MSF TNGP06.phx.gbl. ..

"Cirene" <cirene@nowhere .comwrote in message
news:ew0%23xWD7 IHA.1428@TK2MSF TNGP06.phx.gbl. ..
>

>Thanks. So that I do not have to do too much conversion I was wondering
>if there was a way to have a time variable of 8:00 AM and just add 30 min
>to it over and over again until you reach 5:30 PM. Hmmm...

>
Absolutely!
>
1) Declare the starting DateTime variable
>
2) Set up a while (...) loop
>
3) Use the .AddMinutes(30) variable to increment the DateTime variable
>
4) Add a new ListItem each time through the loop.
>
>
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Cowboy \(Gregory A. Beamer\)]

Re: Code to add times to dropdownlist

Here is a sample that does what you need, and is highly flexible.

First the page itself (test page) - there are two drop downs here, as the
code is set up to setup as many time dropdowns as you need.

<%@ Page Language="C#" AutoEventWireup ="true" CodeFile="Defau lt.aspx.cs"
Inherits="_Defa ult" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitl ed Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownLi st ID="DropDownLis t1" runat="server">
</asp:DropDownLis t>
<asp:DropDownLi st ID="DropDownLis t2" runat="server">
</asp:DropDownLis t>
</div>
</form>
</body>
</html>

Now the .cs file

using System;
using System.Web.UI.W ebControls;

public partial class _Default : System.Web.UI.P age
{
protected void Page_Load(objec t sender, EventArgs e)
{
DropDownList ddl = this.DropDownLi st1;
LoadTimeDropDow nList(ref ddl, 8, 17, 30);

ddl = this.DropDownLi st2;
LoadTimeDropDow nList(ref ddl, 6, 22, 60);
}

private void LoadTimeDropDow nList(ref DropDownList ddl, int startHour,
int endHour, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
DateTime startTime = new DateTime(now.Ye ar, now.Month, now.Day,
startHour, 0, 0);
DateTime endTime = new DateTime(now.Ye ar, now.Month, now.Day,
endHour, 0, 0);

LoadTimeDropDow nList(ref ddl, startTime, endTime,
incrementInMinu tes);
}

private void LoadTimeDropDow nList(ref DropDownList ddl, DateTime
startTime, DateTime endTime, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
bool haveIndex = false;

while (startTime <= endTime)
{
ddl.Items.Add(s tartTime.ToShor tTimeString());
startTime = startTime.AddMi nutes(increment InMinutes);

if ((startTime now) && (!haveIndex))
{
ddl.SelectedInd ex = ddl.Items.Count - 1;
haveIndex = true;
}
}

}

}

This is a down and dirty try at this, but you should see two different drop
downs, with different parameters. You can encapsulate this in a user control
and use it over and over again, by creating parameters for start hour, end
hour and increment.

--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

Subscribe to my blog

http://gregorybeamer.spaces.live.com/lists/feed.rss

or just read it:

http://gregorybeamer.spaces.live.com/

*************** *************** **************
| Think outside the box! |
*************** *************** **************
"Cirene" <cirene@nowhere .comwrote in message
news:e2z2QFD7IH A.3696@TK2MSFTN GP04.phx.gbl...

>I have a dropdownlist. I want to fill it with times (using vb.net code).
>
I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
incrementing every half hour.
>
I know I could type in the values manually but something tells me that I
could loop thru a time variable and add 1/2 hr, etc... then add it in a
loop. (More efficient.)
>
Any coders want to give this a shot? The less code the better. Thanks!
>

[Cowboy \(Gregory A. Beamer\)]

Re: Code to add times to dropdownlist

I already posted the complete code, but here is the portions with the loop:

private void LoadTimeDropDow nList(ref DropDownList ddl, int startHour,
int endHour, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
DateTime startTime = new DateTime(now.Ye ar, now.Month, now.Day,
startHour, 0, 0);
DateTime endTime = new DateTime(now.Ye ar, now.Month, now.Day,
endHour, 0, 0);

LoadTimeDropDow nList(ref ddl, startTime, endTime,
incrementInMinu tes);
}

private void LoadTimeDropDow nList(ref DropDownList ddl, DateTime
startTime, DateTime endTime, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
bool haveIndex = false;

while (startTime <= endTime)
{
ddl.Items.Add(s tartTime.ToShor tTimeString());
startTime = startTime.AddMi nutes(increment InMinutes);

if ((startTime now) && (!haveIndex))
{
ddl.SelectedInd ex = ddl.Items.Count - 1;
haveIndex = true;
}
}
}


The overload makes it so you can pass in the date time objects, or not,
depending on your own personal ideas. The DropDownList is added by ref here
so you can have many dropdowns with different time parameters.

--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

Subscribe to my blog

http://gregorybeamer.spaces.live.com/lists/feed.rss

or just read it:

http://gregorybeamer.spaces.live.com/

*************** *************** **************
| Think outside the box! |
*************** *************** **************
"Cirene" <cirene@nowhere .comwrote in message
news:ew0%23xWD7 IHA.1428@TK2MSF TNGP06.phx.gbl. ..

Thanks. So that I do not have to do too much conversion I was wondering
if there was a way to have a time variable of 8:00 AM and just add 30 min
to it over and over again until you reach 5:30 PM. Hmmm...
>
"sloan" <sloan@ipass.ne twrote in message
news:%23ty78OD7 IHA.3480@TK2MSF TNGP03.phx.gbl. ..

>>
>>
>myDDL.Items.Ad d(new ListItem ("Something1 ", "Something2 ") );
>>
>You can write a loop to go through the items.
>>
>for(int i = 8 ; i <= 17 ; i ++ )
>{
> for (int j = 0 ; j < 2 ; j ++ )
>{
>>
> //now you have
> //8 and 0 ( "8:00" )
> //8 and 1 (" 8:30")
> string hourAndMinute = Convert.ToStrin g(i);
> if(j == 0)
>{
> hourAndMinute += ":00";
>>
>}
>else
>{
> hourAndMinute +=":30";
>}
>>
> myDDL.Items.Add (new ListItem ( hourAndMinute , hourAndMinute ) );
>}
>>
>}
>>
>>
>I'll leave it to you for the AM PM. And the convert (from) military time
>hours.
>>
>But that should get you started.
>>
>>
>"Cirene" <cirene@nowhere .comwrote in message
>news:e2z2QFD7I HA.3696@TK2MSFT NGP04.phx.gbl.. .

>>>I have a dropdownlist. I want to fill it with times (using vb.net code).
>>>
>>I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
>>incrementin g every half hour.
>>>
>>I know I could type in the values manually but something tells me that I
>>could loop thru a time variable and add 1/2 hr, etc... then add it in a
>>loop. (More efficient.)
>>>
>>Any coders want to give this a shot? The less code the better. Thanks!
>>>

>>
>>

>
>

[Cirene]

Re: Code to add times to dropdownlist

Wow - u guys are awesome - thanks!

"Cowboy (Gregory A. Beamer)" <NoSpamMgbworld @comcast.netNoS pamMwrote in
message news:%23CbBXjD7 IHA.4204@TK2MSF TNGP03.phx.gbl. ..

Here is a sample that does what you need, and is highly flexible.
>
First the page itself (test page) - there are two drop downs here, as the
code is set up to setup as many time dropdowns as you need.
>
<%@ Page Language="C#" AutoEventWireup ="true" CodeFile="Defau lt.aspx.cs"
Inherits="_Defa ult" %>
>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitl ed Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownLi st ID="DropDownLis t1" runat="server">
</asp:DropDownLis t>
<asp:DropDownLi st ID="DropDownLis t2" runat="server">
</asp:DropDownLis t>
</div>
</form>
</body>
</html>
>
Now the .cs file
>
using System;
using System.Web.UI.W ebControls;
>
public partial class _Default : System.Web.UI.P age
{
protected void Page_Load(objec t sender, EventArgs e)
{
DropDownList ddl = this.DropDownLi st1;
LoadTimeDropDow nList(ref ddl, 8, 17, 30);
>
ddl = this.DropDownLi st2;
LoadTimeDropDow nList(ref ddl, 6, 22, 60);
}
>
private void LoadTimeDropDow nList(ref DropDownList ddl, int startHour,
int endHour, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
DateTime startTime = new DateTime(now.Ye ar, now.Month, now.Day,
startHour, 0, 0);
DateTime endTime = new DateTime(now.Ye ar, now.Month, now.Day,
endHour, 0, 0);
>
LoadTimeDropDow nList(ref ddl, startTime, endTime,
incrementInMinu tes);
}
>
private void LoadTimeDropDow nList(ref DropDownList ddl, DateTime
startTime, DateTime endTime, int incrementInMinu tes)
{
DateTime now = DateTime.Now;
bool haveIndex = false;
>
while (startTime <= endTime)
{
ddl.Items.Add(s tartTime.ToShor tTimeString());
startTime = startTime.AddMi nutes(increment InMinutes);
>
if ((startTime now) && (!haveIndex))
{
ddl.SelectedInd ex = ddl.Items.Count - 1;
haveIndex = true;
}
}
>
}
>
}
>
This is a down and dirty try at this, but you should see two different
drop downs, with different parameters. You can encapsulate this in a user
control and use it over and over again, by creating parameters for start
hour, end hour and increment.
>
--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA
>
Subscribe to my blog

http://gregorybeamer.spaces.live.com/lists/feed.rss

>
or just read it:

http://gregorybeamer.spaces.live.com/

>
*************** *************** **************
| Think outside the box! |
*************** *************** **************
"Cirene" <cirene@nowhere .comwrote in message
news:e2z2QFD7IH A.3696@TK2MSFTN GP04.phx.gbl...

>>I have a dropdownlist. I want to fill it with times (using vb.net code).
>>
>I want the entries in the ddl to be from "8:00 AM" to "5:00 PM",
>incrementing every half hour.
>>
>I know I could type in the values manually but something tells me that I
>could loop thru a time variable and add 1/2 hr, etc... then add it in a
>loop. (More efficient.)
>>
>Any coders want to give this a shot? The less code the better. Thanks!
>>

>