Re: dateChangedEvent??? - C# Discussion Boards

Re: Create an ActiveX (or equivalent) usable within the compact framework

Olivier Sannier18-Mar-08 6:33

18-Mar-08 6:33

Well, I wondered that as well and decided in the end to post it here because the usage of a proposed solution would not be limited to mobile devices.
But if you think I should move the question over there, then please let me know how I should proceed.

Marshal Unmanaged Type by ByValArray

sthaas18-Mar-08 5:55

sthaas

18-Mar-08 5:55

I am not sure how to handle this and could not find a good example or information on how to do this... I am stuck with how to handle outPropertyDesc. Trying to detrmine the AE_Mode camera is set to which I know is (public const uint AEMode_Manual = 3). I have tried several things and just do not know if I am close or just way off. I appreciate any help... Confused | :confused:

I have the following:
[DllImport("EDSDK.dll")]
public extern static uint EdsGetPropertyDesc(IntPtr inRef, uint inPropertyID,
out EdsPropertyDesc outPropertyDesc);

[StructLayout(LayoutKind.Sequential)]
public struct EdsPropertyDesc
{
public int Form;// Int32 reserved always 0
public uint Access; // reserved always 0 (see below)
public int NumElements; //Int32[] a property data array. The meaning varies depending on the property type

[MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)]
public int[] PropDesc;
}

//
public enum Access : uint
{
Read = 0,
Write,
ReadWrite,
Error = 0xFFFFFFFF,
}

// AEMODE
public const uint AEMode_Program = 0;
public const uint AEMode_Tv = 1;
public const uint AEMode_Av = 2;
public const uint AEMode_Manual = 3;
public const uint AEMode_Bulb = 4;
public const uint AEMode_A_DEP = 5;
public const uint AEMode_DEP = 6;
public const uint AEMode_Custom = 7;
public const uint AEMode_Lock = 8;
public const uint AEMode_Green = 9;
public const uint AEMode_NigntPortrait = 10;
public const uint AEMode_Sports = 11;
public const uint AEMode_Portrait = 12;
public const uint AEMode_Landscape = 13;
public const uint AEMode_Closeup = 14;
public const uint AEMode_FlashOff = 15;
public const uint AEMode_Unknown = 0xffffffff;

dateChangedEvent???

Harvey Saayman18-Mar-08 4:51

Harvey Saayman

18-Mar-08 4:51

hey guys

i was just wondering if the is a DateChangedEvent some where in .net

what i need to do is check if the date is the 1st of the month
if it is i must write the contents of a log table in my database to a flat file for archiving and then clear the table

i was thinking of using a timer to do it but the following just looks wrong...

timer.Interval = 864000000; i dont think so...

any ideas for a more efficient solution?

thanx

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

Re: dateChangedEvent???

Rob Philpott18-Mar-08 4:57

Rob Philpott

18-Mar-08 4:57

I presume this is in some very long running process? Normally you'd use some sort of Schedular such as the Windows one to do stuff like this.

I don't think there is any such event as standard in .NET. You could create a class that generates one though. I'd check every minute or something like that for when the date is different to date last time and date.Day == 1.

Regards,
Rob Philpott.

Re: dateChangedEvent???

Harvey Saayman18-Mar-08 5:08

Harvey Saayman

18-Mar-08 5:08

Rob Philpott wrote:
I presume this is in some very long running process?

nah, its a server for my appliction

Rob Philpott wrote:
I'd check every minute

that wont work either because then it would to the archiving procedure would execute every minute

thanx tho

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

Re: dateChangedEvent???

phannon⁸⁶18-Mar-08 5:13

phannon⁸⁶

18-Mar-08 5:13

I think you miss-read what he said, I thought the same at first. He says to check the current date with the date retrieved from the previous check only (check if its the first, and different to previous), this would only execute once Smile | :)

He who makes a beast out of himself gets rid of the pain of being a man

Re: dateChangedEvent???

Rob Philpott18-Mar-08 5:01

Rob Philpott

18-Mar-08 5:01

Also, if you're using Sql Server you might want to look at Integration Services. It does all that sort of thing.

Regards,
Rob Philpott.

Re: dateChangedEvent???

led mike18-Mar-08 5:23

led mike

18-Mar-08 5:23

HarveySaayman wrote:
what i need to do is check if the date is the 1st of the month

No, what you need is an API that will create an event on the 1st of the month. You can use a Waitable Timer to do that.

I don't know if this is encapsulated in the .NET BCL yet. If not I recommend developing a C++/CLI assembly that encapsulates it and publishes a managed class for your C# project to work with rather than trying to use PInvoke. But that's just me.

SetWaitableTimer[^]

pDueTime: The time after which the state of the timer is to be set to signaled, in 100 nanosecond intervals. Use the format described by the FILETIME structure. Positive values indicate absolute time. Be sure to use a UTC-based absolute time, as the system uses UTC-based time internally.

led mike

Ternary Operator Question

dboy22118-Mar-08 4:33

dboy221

18-Mar-08 4:33

I have a DataTable that binds to a GridView. In the Gridview I have a HyperLinkField which the DataNavigateUrlField will be determined by a condition. Is it possible to use the Ternary operator w/the Gridview to accomplish this? If so, can some one tell me how as I am having trouble with the syntax for operator?...

<asp:hyperlinkfield>DataNavigateUrlFields="(Condition to Go here)" DataNavigateUrlFormatString="mypage.aspx?id={0}"
DataTextField="Company" DataTextFormatString="{0}" HeaderText="Company Name" />

Re: Ternary Operator Question

PIEBALDconsult18-Mar-08 5:12

PIEBALDconsult

18-Mar-08 5:12

Not sure I understand, but...

DataNavigateUrlFields = Condition ? value1 : value2

The ternary operator is a C/C++/C# thing, so I doubt you can have it within the value.

Re: Ternary Operator Question

dboy22119-Mar-08 2:45

dboy221

19-Mar-08 2:45

Hello PIEBald,

Thanks for the reply. I have modified the DataNavigateUrl Fields as such:

<asp:hyperlinkfield>
DataNavigateUrlFields='<%# Eval("Member_Type").ToString() == "I1" ? "ID" : "CO_ID" %>'

However I receive the following error:

Databinding expressions are only supported on objects that have a DataBinding event. System.Web.UI.WebControls.HyperLinkField does not have a DataBinding event.

Re: Ternary Operator Question

dboy22119-Mar-08 3:37

dboy221

19-Mar-08 3:37

Hello PIEBald,

I have actually figured out that I should use the ItemTemplate for binding the results. I have bound the field using the ItemTemplate but it seems as though the Navigate Field is not evaluating the ID or CO_ID. It is returning the entire ternary operation as a string as opposed to evaluating the full condition and returning a CO_ID or ID. Can you advise on what I am doing wrong?

<asp:templatefield headertext="Company Name">
<itemtemplate>
<asp:hyperlink runat="server" id="IDType" text="">]]>'
NavigateUrl='viewmember.aspx?id=<%# Eval("Member_Type").ToString() == "I1" ? Eval("ID") : Eval("CO_ID") %>' />

Re: Ternary Operator Question

dboy22119-Mar-08 5:21

dboy221

19-Mar-08 5:21

Hi PIEbald,

I tried the recommended string and I'm still getting the entire condition displaying for the url id. I have even tried doing it this way:

NavigateUrl='<%# "viewmember.aspx?id=" + Eval("Member_Type").ToString() == "I1" ? Eval("ID") : Eval("CO_ID") %>'

Where the page and url variable are within the binding expression. Here the ternary condition evaluates as should, but does not display the "viewmember.aspx?id=" string. Any other suggestions? I know i'm close to getting this as I am a newbie to databinding. Thanks.

Re: Ternary Operator Question

dboy22119-Mar-08 5:44

dboy221

19-Mar-08 5:44

Hi PIEBald,

I figured it out. I had to add the string for the page and url Id to the condition for it to render. See Below and Thanks for all your help.

NavigateUrl='<%# Eval("Member_Type").ToString() == "I1" ? "viewmember.aspx?id=" + Eval("CO_ID") : "viewmember.aspx?id=" + Eval("ID")%>'

scale in the graph

ciacia18-Mar-08 4:12

ciacia

18-Mar-08 4:12

is there any algorithm which helps in deciding the positions of major and minor ticks on scale of graph depending on the range of the scale at runtime.
Please Guide..

Re: scale in the graph

Ennis Ray Lynch, Jr.18-Mar-08 8:29

Ennis Ray Lynch, Jr.

18-Mar-08 8:29

Yes. Whether the particular tool you are using uses it or not is a different story.

Need a C# Consultant? I'm available.

Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway

Re: scale in the graph

ciacia18-Mar-08 16:18

ciacia

18-Mar-08 16:18

can you please tell me where can i find it... i will try to implement it inC#
thanks

Problem with Fax in C#

arslanjatt18-Mar-08 4:08

arslanjatt

18-Mar-08 4:08

Hi, i m sending fax by using FAXCOMLIB.DLL in C#. The file i am going to send is PDF file. Everything is fine but when the fax is going to be sent that PDF file opened in Adobe Reader. I just want to send the FAX. I don't want PDF file to be opened in adobe reader. Can any one help me that how can i do this. Thanks in advance

Arslan Ilyas

Configuration settings of a dll

mukkanti00718-Mar-08 3:47

mukkanti007

18-Mar-08 3:47

Hi all,
i have a question on Configuration settings of a dll .

If i want to get Configuration settings of a dll in my application how can i get that?

I am using Asp.net application .

Thanks

Thanks
Mukkanti

Re: Configuration settings of a dll

Rob Philpott18-Mar-08 4:51

Rob Philpott

18-Mar-08 4:51

Put the settings in the web.config file.

Regards,
Rob Philpott.

Re: Configuration settings of a dll

Not Active18-Mar-08 6:43

Not Active

18-Mar-08 6:43

ExeConfigurationFileMap map = new ExeConfigurationFileMap();<br />
map.ExeConfigFilename = Path to dll + "config";<br />
Configuration = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None);

only two letters away from being an asset

Extracting strings from strings..

ptr2void18-Mar-08 3:38

ptr2void

18-Mar-08 3:38

I have a string like:

string str = "C:\downloads\fle\abcd\xyz\myfile.exe";

Now how do I extract "myfile.exe" into another string??

Som

Re: Extracting strings from strings..

half-life18-Mar-08 3:47

half-life

18-Mar-08 3:47

Som.Paul wrote:
"C:\downloads\fle\abcd\xyz\myfile.exe"

if u tring to get the file just get it with FileInfo calss and the property FileName

if not just use the Split Method with the "\" delimitor paramter
and get the last string in the array u wiil get Smile | :)

Have Fun
Never forget it

Re: Extracting strings from strings..

ptr2void18-Mar-08 3:59

ptr2void

18-Mar-08 3:59

I cannot use Fileinfo class, it will be a performance issue in my program..
Cant I do it without splitting it into arrays and then extracting??
My program has multiple loops, so that might be an performance issue as well..
Any other method??

Som

Re: Extracting strings from strings..

half-life18-Mar-08 6:41

half-life

18-Mar-08 6:41

Do This :

<br />
string str = @"C:\downloads\fle\abcd\xyz\myfile.exe";<br />
string TTemp = str.Remove(0, str.LastIndexOf(@"\") + 1);<br />

Have Fun
Never forget it

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.