type of application to create to cache objects - C# Discussion Boards

Divyang Mithaiwala28-Mar-06 20:59

28-Mar-06 20:59

See some links if you found usefull.

http://www.codeproject.com/csharp/testingsocketservers.asp
http://www.codeproject.com/csharp/socketsincsharp.asp
http://www.codeproject.com/csharp/binarydatausingsocket.asp
http://www.codeproject.com/csharp/chandrasekar.asp

Before asking question search on articles/comments.

Divyang Mithaiwala
System Engineer & Software Developer

parsing

ali kanju28-Mar-06 17:45

ali kanju

28-Mar-06 17:45

i have to get a sring of data from GPS device and parse that to extract longitude and latitude from that string.are there any API's which i can use to do it.

Re: parsing

CWIZO28-Mar-06 19:29

CWIZO

28-Mar-06 19:29

CodeProject -> Search -> GPS

--------------------------------------------------------
Q:What does the derived class in C# tell to it's parent?
A:All your base are belong to us!

how can I send datagridview cell value to another form

hama228-Mar-06 17:38

hama2

28-Mar-06 17:38

Hi ....everybody
I have two forms the first form is the main form .it has textbox and the second form has a datagridview I want when i click the current cell send it's value to the text box in the main form.
I have already done the code to get the current cell value but I couldn't send the value to the main form I tried to wrote some methods but it didn't work.....I am still a beginner in C#.
SOOOOOOOOO please help me.
with my best regards.
Ahmed

with my best regards.
Ahmed

Re: how can I send datagridview cell value to another form

Gammaza28-Mar-06 19:39

Gammaza

28-Mar-06 19:39

Have you tried session variables ?? ex: on the datagrid page ..... Session["myValue"] = CellValue;
and then on the main page ..... TextBox1.Text = Session["myValue"].ToString();

Hope this helps.

services

anithavikram(manisha)28-Mar-06 17:03

anithavikram(manisha)

28-Mar-06 17:03

Hi,

I have a new requirement to create a service so that my service would query the table every 5 0r 10 minutes to fetch the data from database and i have to pass the value to a particular port.

Can someone suggest me the methodology.Can i go for windows service or webservice?

Thanks,

Re: services

Bob Stanneveld28-Mar-06 19:25

Bob Stanneveld

28-Mar-06 19:25

Hello,

This smells like polling. Do you really need to poll for data? What kind of value do you need to pass? Is this some kind of selection criterium or is this the amount of data that you need or what?

If you want to do database intensive tasks, you can try replicating the database and do all the intensive stuff on a dedicated server.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

type of application to create to cache objects

siali28-Mar-06 14:18

siali

28-Mar-06 14:18

Problem Scenario:
We have a database with information.
We have some ASP.NET web applications that request information from this database.
We do not want to give these applications direct access to the database.

Solution:
So, we planned on creating an API layer with some c# objects (ADO.NET objects) that access the database and instantiates some objects with the information stored in their properties.
The applications will then be able to access the information from these C# objects, instead of directly connecting to the database.
We have to make sure that these objects are alive even if the web application is stopped.
To make a long story short, we basically want to create some stand-alone application (may be a windows service in C#) that exposes an API for the web applications. This stand-alone application has objects that act as caches by maintaining the up-to-date information. Whenever the server is on low load, it updates the database with the latest information it has. All applications should be able to access objects of this stand-alone application to get the information. This stand-alone application should live for ever, ideally until the machine on which it runs is shutdown.

Question:
Which type of project in Visual Studio should I create to develop such c# objects? Will Windows service be a solution? if so, how can I access the objects created by it?

Any help is greatly appreciated.

Re: type of application to create to cache objects

leppie28-Mar-06 18:46

leppie

28-Mar-06 18:46

siali wrote:
Will Windows service be a solution?

Definately Smile | :)

siali wrote:
if so, how can I access the objects created by it?

It's called Remoting. MSDN has many samples on this scenario Smile | :)

xacc.ide-0.1.3.2

Re: type of application to create to cache objects

siali29-Mar-06 12:59

siali

29-Mar-06 12:59

do you mean .NET Remoting? Does it use TCP?

Send SMS???

sebastianos28-Mar-06 12:19

sebastianos

28-Mar-06 12:19

How I can send messages SMS to a cellular telephone from my application?
Exists some Web service?

(In Code Project there is an example, but it does not support my country, Argentina)

Thanks!

Re: Send SMS???

Ravi Bhavnani28-Mar-06 12:28

Ravi Bhavnani

28-Mar-06 12:28

Yes, see this[^] link for one.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: Send SMS???

sebastianos28-Mar-06 13:23

sebastianos

28-Mar-06 13:23

I forgot to say, must be free.

Re: Send SMS???

Luis Alonso Ramos28-Mar-06 15:19

Luis Alonso Ramos

28-Mar-06 15:19

This one[^] is good, but it doesn't cover Argentina either (it works for Brazil, if you ever need it). I always have the same problem with Mexico Mad | :mad:

Luis Alonso Ramos
Intelectix
Chihuahua, Mexico

Not much here: My CP Blog!

Re: Send SMS???

Divyang Mithaiwala28-Mar-06 21:12

Divyang Mithaiwala

28-Mar-06 21:12

Plz see this.

I don't know how much it will helpfull to you. But it will nice.
for more information search "microsoft smssender" on google.

Divyang Mithaiwala
System Engineer & Software Developer

How to write "Failed to load a doc " if a server is down

JoanMike28-Mar-06 11:07

JoanMike

28-Mar-06 11:07

I want to know how to write in C# the following:

We have an xml file on a server and when the server is down, we should be able to display a message saying "Failed to Load File b/c server is down"

How can I write this in C#.
Please help, as I have checked the internet for sample codes but couldnt find any.
Thanks

Crop an image without creating bitmap

Libor Tinka28-Mar-06 10:50

Libor Tinka

28-Mar-06 10:50

Is it possible with GDI+ to just crop an image withou creating a new one?

I'm working with, say, 5 Mpix photos, so It can be superfluous, to create a cropped 4 Mpix bitmap and then drawing the first one to this.

I believe there is something similar to array reallocation applied to images...

Re: Crop an image without creating bitmap

Christian Graus28-Mar-06 15:42

Christian Graus

28-Mar-06 15:42

No.

Christian Graus - Microsoft MVP - C++

convert xml file

ap_sa28-Mar-06 10:41

ap_sa

28-Mar-06 10:41

i would like to convert my xml file to *.sav file (SPSS). is there any program out there that i can use or if i want to create my own then how would i create .sav file in c#.net and the variable names for SPSS file

DirectX and tabpages

melanieab28-Mar-06 8:59

melanieab

28-Mar-06 8:59

Hi,
I have a normal windows form with a bunch of tabpages on it. But at the beginning, I want to do a little DirectX intro (which I've already created) in a class that I've been running separately. Now I'm not sure how to put them together without having to close the intro form and then open the main form. Is there any possible way to, say, create a surface on the main form that will run the directx stuff? I can't find any examples on this. Or any other thoughts?
Thanks!
Mel Smile | :)

Re: DirectX and tabpages

BlackDice28-Mar-06 9:02

BlackDice

28-Mar-06 9:02

I did it in C++ with a static (label) control. If something like that is what you're looking for, check out my 'Modeler' article here on CP.

My Music | My Pics | My Articles

BlackDice

Re: DirectX and tabpages

melanieab28-Mar-06 9:15

melanieab

28-Mar-06 9:15

Thanks! That's exactly what I'm looking for.
Cheers,
Mel

Problem with binding combobox with blank item

Lav Pathak28-Mar-06 8:10

Lav Pathak

28-Mar-06 8:10

Hi,

I am working on windows .NET application.
Here I have few comboboxes which i bind with my datatable.
Now I wanted the first item to be blank item so After I queried my datatable from database, I add blank row at the top of my datatable and then bind my datatable to the combobox.

Following is the code to bind the combobox with first item as blank:

dsDataSet.Clear();<br />
theAdapter.Fill(dsDataSet, "Table");<br />
tblTable = dsDataSet.Tables("Table");<br />
myRow = tblTable.NewRow;<br />
<br />
myRow("DisplayField") = "";<br />
<br />
//------------------------<br />
myRow("KeyField") = 0;                   // ------>  keyfield as ZERO<br />
//--------------------------<br />
<br />
tblTable.Rows.InsertAt(myRow, 0);<br />
objCombo.DataSource = null;<br />
objCombo.Items.Clear();<br />
objCombo.DataSource = tblTable;<br />
objCombo.DisplayMember = "DisplayField";<br />
objCombo.ValueMember = "KeyField";

Now Problem is that after I bind the combobox, If i do following

cbo.selectedvalue= <somevalue>

Here my <somevalue> is the value of the first actual item after the blank.

it is throwing an exception.
------------
In Method: Void set_SelectedIndex(Int32)

Specified argument was out of the range of valid values.
Parameter name: '-2147483648' is not a valid value for 'index'.
-----------

Any idea why is this happening?

here using selected value i am selecting the first item after the blank item in combobox.

Thanks
Lav

Lav Pathak
Application Developer
Auxiliary Enterprises
Kalamazoo, MI

How can i make a Panelarray ?

summercoal28-Mar-06 7:14

summercoal

28-Mar-06 7:14

Hi!!
Because i need to create about 50 panel with mouse event. how i can create an object array in C#?

I tried
Panel[] mPanel = new Panel[50] ;

it does not work. How can i compete it??

thx thx!!

Re: How can i make a Panelarray ?

Judah Gabriel Himango28-Mar-06 9:31

Judah Gabriel Himango

28-Mar-06 9:31

That allocates the array. You then need to initialize the array:

for(int i = 0; i < mPanel.Length; i++)
{
   mPanel[i] = new Panel();
}

That said, I seriously question why you need to create 50 panels; especially during each mouse event. What are you trying to do?

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: How 'bout a little guitar now?
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

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