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Military time

I need a textbox that except military time only. Should I use datetime.now.tostring(format...? Thank you in advance.
For example right now is 9:10 pm - military time is 2110

Sinoj Sebastian

Try this

<asp:TextBox id="TBTime" style="Z-INDEX: 101; LEFT: 128px; POSITION: absolute; TOP: 152px" runat="server"></asp:TextBox>
                  <asp:RegularExpressionValidator id="RegularExpressionValidator1" style="Z-INDEX: 102; LEFT: 296px; POSITION: absolute; TOP: 152px"
                        runat="server" ErrorMessage="Invalid Time" ValidationExpression="(([01][0-9])|(2[0-3]))[0-5][0-9]" ControlToValidate="TBTime"></asp:RegularExpressionValidator>
                  <asp:Button id="BtnSubmit" style="Z-INDEX: 103; LEFT: 208px; POSITION: absolute; TOP: 192px"
                        runat="server" Text="Test" Width="72px"></asp:Button>
                  <asp:Label id="Label1" style="Z-INDEX: 104; LEFT: 56px; POSITION: absolute; TOP: 152px" runat="server">Enter time</asp:Label>

Tell me if you have any problem.

VBdotnet2005

ASKER

If a user input 0651, for example, how can you tell whether it is am or pm, for those whom is not awared of it? Since it excepts it anyway.

Sinoj Sebastian

I'm sorry, i don't understand what you are taking about.

0000 - 1159 is AM
1200 - 2359 is PM

try this
Private Sub BtnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSubmit.Click
Dim Time As Date
Dim a As Char() = Trim(TBTime.Text).ToCharArray()
TBTime.Text() = Date.Parse(a(0) + a(1) + ":" + a(2) + a(3)).ToShortTimeString
End Sub

VBdotnet2005

ASKER

Can you help me further? What is a user accidently input just a number? It is going to create an error, correct?

ASKER CERTIFIED SOLUTION

Sinoj Sebastian

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