C# Discussion Boards - CodeProject

1-Aug-05 21:37

Hi Friends,

I have a small problem.
I am working with C#.net and asp.net

I am using try cath block to detect the errors.
But if I write like this

try
{
.........
.......
}
catch(FormatException x)
{
.........
..........
}
it is not catching the exception in catch block rather it simply give me error in browser.

and if I write like this
try
{
................
.........
}
catch(Exception x)
{
...........
.........
}
it works fine.
But I want to diplay different message according to the exceptions caught.
Plz help me in this problem
Thanking all of u in advance.

Chetan Ranpariya

Mohamad Al Husseiny1-Aug-05 21:46

Mohamad Al Husseiny

1-Aug-05 21:46

are you sure that exception type is FormatException
any way why not try some thing like this
try
{

}
catch(FormatException ex)
{}
catch(Exception ex)
{}
finally
{}

Chetan Ranpariya1-Aug-05 22:37

1-Aug-05 22:37

Hi,
Thank u for ur reply.
I tried the way u suggested.
When I printed the message of exception that is of system.formatexception.
but that exception was not being caught.
Then I tried to know the type of exception and I got it was the ArgumentException and I tried to catch that and I got success.

But the question is that if it is ArgumentException then why the message shown is of system.FormatException.

Can u plz clarify this?

Thank u again.

Mohamad Al Husseiny2-Aug-05 0:34

Mohamad Al Husseiny

2-Aug-05 0:34

what do you mean by saying message shown is of system.FormatException.
can you post the code and exception message
may this help

Chetan Ranpariya2-Aug-05 1:01

2-Aug-05 1:01

Following is the code that I am running in a clikc event of a button followed by the message that I am getting when the exception is caught.

private void bttnSaveUserPersonalInfo_Click(object sender,EventArgs e)
{
DataRowView drwNewUserPersonalInfo;
string strUserRoles = String.Empty;
try
{
drwNewUserPersonalInfo = dvUserPersonalInfo.AddNew();
drwNewUserPersonalInfo[0] = txtUserLoginID.Text;
drwNewUserPersonalInfo[1] = txtUserLoginPassword.Text;
drwNewUserPersonalInfo[2] = txtUserLastName.Text;
drwNewUserPersonalInfo[3] = txtUserFirstName.Text;
drwNewUserPersonalInfo[4] = txtUserMiddleName.Text;
drwNewUserPersonalInfo[5] = txtUserDateOfBirth.Text; drwNewUserPersonalInfo[6] = txtUserSSNumber.Text;
drwNewUserPersonalInfo[7] = cboUserMaritalStatus.SelectedValue.ToString();
drwNewUserPersonalInfo[8] = cboUserSex.SelectedValue.ToString();
drwNewUserPersonalInfo[9] = txtUserNationality.Text;
drwNewUserPersonalInfo[10] = txtUserAliasName.Text;
drwNewUserPersonalInfo[11] = txtUserCurrentLocale.Text;
drwNewUserPersonalInfo[12] = Session["UserID"].ToString();
drwNewUserPersonalInfo[13] = DateTime.Now;
drwNewUserPersonalInfo[14] = Session["UserID"].ToString();
drwNewUserPersonalInfo[15] = DateTime.Now;
drwNewUserPersonalInfo.EndEdit();
dstUserPersonalInfo.WriteXml(MapPath"./DataBase/UserPersonalDetails.xml"));
ViewState["NewUserLoginID"] = txtUserLoginID.Text;
}
catch(System.ArgumentException) //This exception is caught the message *
{
Response.Write(x.Message);
}
}

//Message displayed when ArgumentException is caught
System.FormatException: String was not recognized as a valid DateTime. at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) at System.DateTime.Parse(String s, IFormatProvider provider, DateTimeStyles styles) at System.DateTime.Parse(String s, IFormatProvider provider) at System.Convert.ToDateTime(String value, IFormatProvider provider) at System.String.System.IConvertible.ToDateTime(IFormatProvider provider) at System.Convert.ToDateTime(Object value) at System.Data.Common.DateTimeStorage.Set(Int32 record, Object value) at System.Data.DataColumn.set_Item(Int32 record, Object value)Couldn't store <> in USER_DOB Column. Expected type is DateTime.

Plz review this code try to get the solution.
Thankin u

Mohamad Al Husseiny2-Aug-05 2:19

Mohamad Al Husseiny

2-Aug-05 2:19

from the following line
drwNewUserPersonalInfo[5] = txtUserDateOfBirth.Text
that you set string value to datatime type so this generate exception
even if the string formmated like date
so try to use some thing like this
drwNewUserPersonalInfo[5] = DateTime.Parse(myDateTimeValuetxtUserDateOfBirth.Text)
look at msdn to other overloading version for this methof
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdatetimeclassparseexacttopic.asp[^]

Chetan Ranpariya2-Aug-05 3:41

Windows Service Installation problems

2-Aug-05 3:41

Thanks,

But I dont get what do u want to say.
whats the relation between the exception I am getting and the code u sent to me.
I dont think there is any relation between the two exceptions formatexception and argumentexception.
i just want to know why the proper exception is not caught.

asifrogers1-Aug-05 21:25

asifrogers

1-Aug-05 21:25

Hi there!
I managed to make a service and then made a setup project for it.The set up worked fine on my PC but when i tried to install this service on another PC i came up with an error while trying to start the service "Error:1053 The service did not respond to start or control request in a timely fashion".
This error did not come after 3 minutes rather it came as soon as the service was tried to be started.
Plz help me in this matter.
Regards
Asif Rogers

asifrogers

C# Graphics locking to x, y, cordinates of other graphics

nexus-solutions1-Aug-05 20:48

nexus-solutions

1-Aug-05 20:48

Using C# forms and graphic box.

I am looking for help creating a form in which i have a graphic box. In the graphic box I can load an image that is 1024x768 in size. I want to be able to add a graphic and lock it by the x, y cord, on top of the other graphic in a seperate plane. Is this possible and does anyone have any ideas on how to make this easy to code and stable?

Rob

Re: C# Graphics locking to x, y, cordinates of other graphics

Christian Graus2-Aug-05 2:09

Re: C# Graphics locking to x, y, cordinates of other graphics

2-Aug-05 2:09

Is a graphic box a picture box ? If you want to draw images in layers, you need to do it yourself.

Christian Graus - Microsoft MVP - C++

Anonymous2-Aug-05 17:27

Anonymous

2-Aug-05 17:27

yes.. its a picture box. The standard in c# VS. But what im trying to do is have two seperate immages float on top of each other, so i can click each seperatly and have seperate objects. The locations will load from a sql db of where to snap to. How can this be done?

Re: C# Graphics locking to x, y, cordinates of other graphics

Christian Graus2-Aug-05 17:47

disappearing image in toolbar

2-Aug-05 17:47

Anonymous wrote:
The standard in c# VS.

Well, the quick and easy way, at least.

Anonymous wrote:
How can this be done?

Like I said, you need to draw the images yourself. Handle OnPaint and draw them there.

Christian Graus - Microsoft MVP - C++

nidhelp1-Aug-05 20:47

nidhelp

1-Aug-05 20:47

hi,

i've already added a control with an image in my toolbar but the image disappears when i run my app.. why is that so?

thanks

Client queue for a web application

eyoung701-Aug-05 19:35

eyoung70

1-Aug-05 19:35

I would like to have clients call some kind of an enqueue web method and wait for a server response. I was hoping someone could tell me the correct threading code to accomplish this.

Client > [WebMethod]public string Wait() > [Client thread waits] > Server fires "RETURN" >
Client returns "RETURN"

Anyone know how to do this?

Re: Client queue for a web application

eyoung703-Aug-05 16:14

eyoung70

3-Aug-05 16:14

anybody?

Re: Client queue for a web application

eyoung704-Aug-05 16:06

eyoung70

4-Aug-05 16:06

damn

Base class method call ?

chettu1-Aug-05 19:21

chettu

1-Aug-05 19:21

Hi
I have Class A with a protected virtual member Method1() and i have another calss Class B inheriting Class A in which i overrided the base class's method Method1() and i also call the base class's Method1() using the base keyword. Now i have another class Class C which inherits Class B and i am overriding Method1(), the problem is now how do i call Class A's Method1() from this class.

<br />
Class A<br />
{<br />
   protected virtual Method1()<br />
   {}<br />
}<br />
<br />
Class B : Class A<br />
{<br />
   protected override Method1()<br />
    {<br />
     //code.<br />
     base.Method1()<br />
    }<br />
}<br />
<br />
Class C : Class B<br />
{<br />
   protected override Method1()<br />
   {   <br />
     QUESTION: HOW TO CALL CLASS A's METHOD1() HERE. I dont want to call   Class B's Method1() but want to call Class A's Method1()<br />
   }<br />
}<br />

F1! F1! F1!....plzzz Frown | :(

Regards
Chettu.

S. Senthil Kumar2-Aug-05 2:11

S. Senthil Kumar

2-Aug-05 2:11

You can't do it directly in C# because B has already overridden Method1. You need to have a protected "forwarding" method in class B that does what you want to. Something like

class B : A
{
protected void ForwardMethod()
{
base.Method1();
}
}

It's possible in C++ though, A::Method1 will do the job.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Christian Graus2-Aug-05 2:13

2-Aug-05 2:13

You can't, and it would suck if you could. Looks like C should derive from A.

Christian Graus - Microsoft MVP - C++

chettu2-Aug-05 2:34

chettu

2-Aug-05 2:34

Why would it suck.. i have a case where Class C should inherit Class B and not A isn't this a possible scenario... i guess so....The possible solution i have done is have a method in class B which will call the base method in A. This scenario will hold in events.. where calling the base class is mandatory....

Christian Graus2-Aug-05 14:09