Re: Error Handling - C# Discussion Boards

arkiboys21-Jul-09 22:49

21-Jul-09 22:49

Hello,
I have developed an application which reads from, writes to xml files and displays the data on the UI.
This application is used by many users and so an auditing functionality is required.
How do you recommend to do this? should the audit be written into a separate centralized xml file? remember that this audit file will have to be used to retrieve data to show the audit details.
Thanks

Re: Audit

SeMartens21-Jul-09 22:55

SeMartens

21-Jul-09 22:55

Hi,

I would suggest using a database instead of xml. Advantage of this approach is, that it is faster than xml, supports multi-threading and user-isolation and provides functionalities to analyse the data within. Using Xml means that you have to implement this all by yourself. Working with xml is slow so this can become a bottleneck for your application.

Regards
Sebastian

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Re: Audit

arkiboys21-Jul-09 22:57

arkiboys

21-Jul-09 22:57

Hi,
Due to business rules, database should not be used.
Thanks

Re: Audit

Pete O'Hanlon22-Jul-09 0:24

Pete O'Hanlon

22-Jul-09 0:24

You need to raise with your business that this rule will cost a lot of money to work around, and does not gel with an audit requirement functionality because of the lack of transactional constraints in your XML handling.

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Re: Audit

arkiboys22-Jul-09 0:31

arkiboys

22-Jul-09 0:31

Ok.
Thanks

Error Handling

mjawadkhatri21-Jul-09 22:26

mjawadkhatri

21-Jul-09 22:26

Hi..
i m using try command like this

try
{
// Statement which can cause an exception.
}
catch
{
// Statements for handling the exception
}
when perform catch statement then progrm not read next line go to try statement which can cause an exception
how can i do???

Re: Error Handling

Tom Deketelaere21-Jul-09 22:38

Tom Deketelaere

21-Jul-09 22:38

mjawadkhatri wrote:
when perform catch statement then progrm not read next line go to try statement which can cause an exception
how can i do???

Can you explain a bit better what your asking?

Your program will execute the code within the try block, if an error occurs it will 'jump' to the catch block and execute the code there. It will not return to the try block.
If there is any code you always need/want to be executed use a 'finally' block.

Re: Error Handling

Vimalsoft(Pty) Ltd22-Jul-09 0:06

Vimalsoft(Pty) Ltd

22-Jul-09 0:06

I saw your Example code in Coding Horrors Smile | :)

lol

I dont know what your problem is but its not done that way, what is the is of using the catch keywork and not use it.

try
{
       //Statement which can cause an exception.
}
catch(ApplicationExeption ex)
{
    // Statements for handling the exception use  the ex Object here
}

Vuyiswa Maseko,

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C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
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Re: Error Handling

Luc Pattyn22-Jul-09 1:27

Luc Pattyn

22-Jul-09 1:27

Not sure what it is you want, however:

1.
there is no simple equivalent to ancient Basic's "On Error Goto Next"

2.
if your try block contains a loop, and fails in one iteration of said loop, anything in the try block is aborted, also the loop.
if you want the loop to continue with the next iteration, you have to turn things around, and put the try-catch construct inside the loop.

Smile | :)

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The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
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Beep Duration

gwithey21-Jul-09 22:22

gwithey

21-Jul-09 22:22

I am having trouble working out how i can make a beep occur for a given duration of time.
I have the following event handler that will recieve the beep duration and execute it for that amount of time. Lots of articles talk of beeping for intervals but have not found a way to make a continuous beep.

void VMCU_Beep(int BeepDurationInSeconds)
   {

   }

Does anyone know how this can be done
Thanx George

Re: Beep Duration

Nagy Vilmos21-Jul-09 23:17

Nagy Vilmos

21-Jul-09 23:17

Use System.Console.Beep(frequency, duration)

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My work here is done.

Re: Beep Duration

gwithey21-Jul-09 23:53

gwithey

21-Jul-09 23:53

Thanx thats what i was looking for

Re: Beep Duration

Luc Pattyn22-Jul-09 1:28

Luc Pattyn

22-Jul-09 1:28

gwithey wrote:
a continuous beep

trying to keep the mosquitoes away? Laugh | :laugh:

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Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Total Sum Value of columns as header row by ID in gridview

vanillaET21-Jul-09 21:56

vanillaET

21-Jul-09 21:56

The GridView columns are as follow:
      <Columns>
                        <asp:BoundField HeaderText="ID No." DataField="NRIC" />
                        <asp:BoundField HeaderText="Name" DataField="LabourName" />
                        <asp:BoundField HeaderText="Event Name/Duty Roster" DataField="EventName/DutyRoster" />
                        <asp:BoundField HeaderText="Working Date" DataField="WorkingDate" />
                        <asp:BoundField HeaderText="Normal(hr)" DataField="NormalHour" />
                        <asp:BoundField HeaderText="Amt(N)" DataField="NormalRate" />
                        <asp:BoundField HeaderText="Extra(hr)" DataField="ExtraHour" />
                        <asp:BoundField HeaderText="Amt(E)" DataField="ExtraRate" />
                        <asp:BoundField HeaderText="Weekend(hr)" DataField="WeekEndHour" />
                        <asp:BoundField HeaderText="Amt(W)" DataField="WeekEndRate" />
                        <asp:BoundField HeaderText="Holiday(hr)" DataField="HolidayHour" />
                        <asp:BoundField HeaderText="Amt(H)" DataField="HolidayRate" />
                        <asp:BoundField HeaderText="Allowance" DataField="Allowance" />
                        <asp:BoundField HeaderText="Total $" DataField="Total" />
                        <asp:BoundField DataField="Type" HeaderText="Type" Visible="False" />
                  </Columns>

The result must be:
------------|-------|---------------|-----------------|--------------|--------|---|------
LabourID|Name|Event Name|Working Date|Normal(Hr)|Amt(N)|...|Total
------------|-------|---------------|-----------------|--------------|--------|---|------
009         |ET      | All            | All                  | 5            | 35.0 |...|95.0
------------|-------|---------------|-----------------|--------------|--------|---|------
               |         | Meeting      | 10 Jul 09      | 2            | 20.0 |...|60.0
------------|-------|---------------|-----------------|--------------|--------|---|------
               |         | Seminar      | 13 Jul 09      | 3            | 15.0 |...|35.0
------------|-------|---------------|-----------------|--------------|--------|---|------
002         |Sue   | All            | All                  | 6               | 18.0 |...|40.0
------------|-------|---------------|-----------------|--------------|--------|---|------
               |         | Promotion | 23 Jul 09      | 6            | 18.0 |...|40.0
------------|-------|---------------|-----------------|--------------|--------|---|------

I'm writing the code as follow:

void GetDataTable(DataTable tempDT)
            {
                  DataTable dt_FromDB = tempDT;
                  DataTable dt_Grid = Grid_Table;
      //         DataRow adr = new DataRow();

                  decimal nHour=0;
                  decimal nRate=0;
                  decimal eHour=0;
                  decimal eRate=0;
                  decimal hHour=0;
                  decimal hRate=0;
                  decimal wHour=0;
                  decimal wRate=0;
                  decimal allow=0;
                  decimal total=0;

                  string labourNRIC = "";
                  string checkLabourNRIC = "";


                  foreach (DataRow dr_FromDB in dt_FromDB.Rows)
                  {
                        //string NRIC=dr_FromDB["NRIC"].ToString();
                        //while(dt_FromDB.Select("NRIC="+NRIC))
                        //{
                        if(dr_FromDB["NRIC"].ToString()==labourNRIC || labourNRIC=="")
                        {
                              nHour += Convert.ToDecimal(dr_FromDB["NormalHour"].ToString());
                              nRate += Convert.ToDecimal(dr_FromDB["NormalRate"].ToString());
                              eHour += Convert.ToDecimal(dr_FromDB["ExtraHour"].ToString());
                              eRate += Convert.ToDecimal(dr_FromDB["ExtraRate"].ToString());
                              hHour += Convert.ToDecimal(dr_FromDB["HolidayHour"].ToString());
                              hRate += Convert.ToDecimal(dr_FromDB["HolidayRate"].ToString());
                              wHour += Convert.ToDecimal(dr_FromDB["WeekEndHour"].ToString());
                              wRate += Convert.ToDecimal(dr_FromDB["WeekEndRate"].ToString());
                              allow += Convert.ToDecimal(dr_FromDB["Allowance"].ToString());
                              total += Convert.ToDecimal(dr_FromDB["Total"].ToString());
                        }

                        if (dr_FromDB["NRIC"].ToString() != checkLabourNRIC)
                        {
                              labourNRIC = dr_FromDB["NRIC"].ToString();

                              DataRow dr_Grid = dt_Grid.NewRow();
                              dr_Grid["NRIC"] = dr_FromDB["NRIC"].ToString();
                              dr_Grid["LabourName"] = dr_FromDB["LabourName"].ToString();
                              dr_Grid["EventNameOrDutyRoster"] = "All";
                              dr_Grid["WorkingDate"] = "All";
                              dr_Grid["NormalHour"] = nHour;
                              dr_Grid["NormalRate"] = nRate;
                              dr_Grid["ExtraHour"] = eHour;
                              dr_Grid["ExtraRate"] = eRate;
                              dr_Grid["HolidayHour"] = hHour;
                              dr_Grid["HolidayRate"] = hRate;
                              dr_Grid["WeekEndHour"] = wHour;
                              dr_Grid["WeekEndRate"] = wRate;
                              dr_Grid["Allowance"] = allow;
                              dr_Grid["Total"] = total;
                              dt_Grid.Rows.Add(dr_Grid);
                              ViewState["Grid"] = dt_Grid;
                        }

                        if (dr_FromDB["NRIC"].ToString() == labourNRIC)
                        {
                              DataRow dr_Grid = dt_Grid.NewRow();
                              dr_Grid["EventNameOrDutyRoster"] = dr_FromDB["EventNameOrDutyRoster"].ToString();
                              dr_Grid["WorkingDate"] = dr_FromDB["WorkingDate"].ToString();
                              dr_Grid["NormalHour"] = dr_FromDB["NormalHour"].ToString();
                              dr_Grid["NormalRate"] = dr_FromDB["NormalRate"].ToString();
                              dr_Grid["ExtraHour"] = dr_FromDB["ExtraHour"].ToString();
                              dr_Grid["ExtraRate"] = dr_FromDB["ExtraRate"].ToString();
                              dr_Grid["HolidayHour"] = dr_FromDB["HolidayHour"].ToString();
                              dr_Grid["HolidayRate"] = dr_FromDB["HolidayRate"].ToString();
                              dr_Grid["WeekEndHour"] = dr_FromDB["WeekEndHour"].ToString();
                              dr_Grid["WeekEndRate"] = dr_FromDB["WeekEndRate"].ToString();
                              dr_Grid["Allowance"] = dr_FromDB["Allowance"].ToString();
                              dr_Grid["Total"] = dr_FromDB["Total"].ToString();
                              dr_Grid["Type"] = dr_FromDB["Type"].ToString();
                              dt_Grid.Rows.Add(dr_Grid);
                              ViewState["Grid"] = dt_Grid;

                              checkLabourNRIC = labourNRIC;
                        }

                  }

*How shall I continue this code?
*Thanks for your help.

Su

Re: Total Sum Value of columns as header row by ID in gridview

Nagy Vilmos21-Jul-09 22:12

Nagy Vilmos

21-Jul-09 22:12

For the love of God, tag your code so that its pretty:

------------|-------|---------------|-----------------|--------------|--------|---|------
LabourID    |Name   |Event Name     |Working Date     |Normal(Hr)    |Amt(N)  |...|Total 
------------|-------|---------------|-----------------|--------------|--------|---|------
009         |ET     | All           | All             | 5            | 35.0   |...|95.0 
------------|-------|---------------|-----------------|--------------|--------|---|------
            |       | Meeting       | 10 Jul 09       | 2            | 20.0   |...|60.0
------------|-------|---------------|-----------------|--------------|--------|---|------
            |       | Seminar       | 13 Jul 09       | 3            | 15.0   |...|35.0
------------|-------|---------------|-----------------|--------------|--------|---|------
002         |Sue    | All           | All             | 6            | 18.0   |...|40.0
------------|-------|---------------|-----------------|--------------|--------|---|------
            |       | Promotion     | 23 Jul 09       | 6            | 18.0   |...|40.0
------------|-------|---------------|-----------------|--------------|--------|---|------

Then we can think about the problem.
The solution is not too hard and you needn't have posted 18 billion lines of code.

Panic, Chaos, Destruction.
My work here is done.

Re: Total Sum Value of columns as header row by ID in gridview

vanillaET22-Jul-09 0:30

vanillaET

22-Jul-09 0:30

Can u give me solution? I need to accomplish it. Thanks.

Re: Total Sum Value of columns as header row by ID in gridview

Nagy Vilmos22-Jul-09 1:32

Nagy Vilmos

22-Jul-09 1:32

I can give the solution but you'll learn morew by trying. However I've been told I'm too rude to everyone so, for _Maxx_'s benefit, I will point you gently in the right direction.

The problem is complicated by having the summary before the items, but there is an easy way to do this that does not require looping through the items twice. The follwoing psudo code should get you on your way:

/// This is not real code
summary is not set
for each item in the list
  if the item key <> summary key
    if the summary is set
      update the grid entry for summary with the totals
    create a new grid entry for summary with item key
    set totals to zero
  create a new grid entry for item
  add item values to totals
if the summary is set
  update the grid entry for summary with the totals

Panic, Chaos, Destruction.
My work here is done.

Re: Total Sum Value of columns as header row by ID in gridview

vanillaET22-Jul-09 23:10

vanillaET

22-Jul-09 23:10

Thanks for your help. I'm now trying to write my program according to your psudo code. At first, I thought this program in a very confused way. Thanks a lot! Smile | :)

Need Guidance

Mogamboo_Khush_Hua21-Jul-09 21:25

Mogamboo_Khush_Hua

21-Jul-09 21:25

Hi,

I want to develop a project in which mobiles based on windows mobile OS is used, this Mobiles will use GPRS to connect to internet and send signals to
camera attached to remote location , like to zoom etc.

As i am pretty new in this field can somebody guide which type of project i should make in visual studio 2008 IDE, I know smart device project but on that, i want to know about target platform.

Do any body have good tutorials on that.

Re: Need Guidance

MumbleB22-Jul-09 0:20

MumbleB

22-Jul-09 0:20

Have you tried the Mobile Development Forumn?

Excellence is doing ordinary things extraordinarily well.

How to display table data in table format uzing zedgraph

Nitin K21-Jul-09 20:55

Nitin K

21-Jul-09 20:55

Hii
I am developing windows application. i want to display datatable data in table format in the zedgraph. Can anyone help me? plz send me the solution plz asap.
thanks in advance.

Re: How to display table data in table format uzing zedgraph

stancrm21-Jul-09 21:09

stancrm

21-Jul-09 21:09

?? If you want to display a table, use DataGridView. ZedGraph is for showing chart.

Re: How to display table data in table format uzing zedgraph

Nitin K21-Jul-09 23:46

Nitin K

21-Jul-09 23:46

HII
thanx for the reply..but i want to show that chart's data in table format below the same chart. example
strike PL
1000 500
2000 600
3000 700

like this
plz send me solution
thanx in advance.

Re: How to display table data in table format uzing zedgraph

stancrm22-Jul-09 1:22

stancrm

22-Jul-09 1:22

use legend, if that is not enough, than you must write it by yourself.

Skip the Outlook Web Access login window

mohanroy21-Jul-09 20:55

mohanroy

21-Jul-09 20:55

Is is it possible to develop a web page(Asp.Net) where from I will pass the UID/PWD and straight way enter the Outlook Web Access Page. I ment it will skip the Outlook Web Access login window.

Can someone help me with a solution.

Thanks in advance.

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