Re: how to round up a value and display in a lable? - C# Discussion Boards

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Re: derived class function is not accessible from base class object of type derived

Russell Jones13-Jun-07 21:42

Russell Jones

13-Jun-07 21:42

kumarprabhakar74 wrote:
test t;
test1 t1 = new test1();
t = t1;
t.function1();
t1.function2()//No Error
t.function2(); //Show error

you can only call function2 on a test1 object or a subclass of test1. The fact that t happens to contain a test1 object doesn't matter as the compiler cannot know what kind of object will be referenced by t apart from the fact that it is of type test.

HTH

Russ

sample online test application in c#

srinivassam13-Jun-07 19:38

srinivassam

13-Jun-07 19:38

Hi can any one give idea on creating online test application in c#? or send url

Thanks

samrama

Re: sample online test application in c#

Sathesh Sakthivel13-Jun-07 19:56

Sathesh Sakthivel

13-Jun-07 19:56

Get it[^].

In that Videos for ASP.NET 2.0 Beginners the lesson 11 to 14 is fully for the quiz engine test ie., the online test application only.

Hope that will help you.

Regards,

Satips. Rose | [Rose]

How to break a line of characters

FishiFishi13-Jun-07 19:15

FishiFishi

13-Jun-07 19:15

I want to keep my table width fix. but when the chracters in the table row exceeds from the width of the table then the table width also increases. i want to keep the width of the table as fix, but when the characters reach to the right boundry of the table, a new line should appear automatically and the remaining characters should be written at that line. just like a text area or multiline textbox.

thanx

Qaiser

automation of web browser (urgent )

s_khan_87613-Jun-07 18:57

s_khan_876

13-Jun-07 18:57

am using c# to automate web pages, how can i handle frames? The web page i reterive
contains 3 frames in it referencing to 3 different URLs. ,i will be very thank full ,if u provide me a chunk of code in c# ,if u donot understand ,ask me again and again ,very helpless

how to round up a value and display in a lable?

MS Lee13-Jun-07 18:35

MS Lee

13-Jun-07 18:35

Good Morning,,

my problem is

i m getting sum of values from a table, and i need to display it in a lable,,
even the lable giving correct value but it like 5676433.897534598352003650 , but i need a rounded up value to display,,(if i display the value in data grid mean it rounded up the value)

so which solution helps to get my answer???? Confused | :confused:

self confidence+hard work=SUCCESS

Re: how to round up a value and display in a lable?

chand1013-Jun-07 19:11

chand10

13-Jun-07 19:11

Hi

You can Round up your value in this way.....

double val = 5676433.897534598352003650;
val = Math.Round(val);
Label.Text = Convert.ToString(val);

Cheers
Chandu

Re: how to round up a value and display in a lable?

Krish - KP13-Jun-07 20:00

Krish - KP

13-Jun-07 20:00

While fetching from SQL, can use
SELECT Convert(Decimal(10, 2), value) FROM tableA

here it taks only two decimals from the <value>

Regards
KP

How To Update DataRow In DataTable

Pankaj - Joshi13-Jun-07 17:59

Pankaj - Joshi

13-Jun-07 17:59

Hello Sir,
I Fill The DataSet From A XML file like

ds.ReadXml(@"C:\myXmFile.xml");

The DataSet Is Filled and Data comes to the ds.tables[0]....

Now I Want to edit Some Rows of This DataTable .. For That I set the
PK for the table like

//Setting PK
DataColumn[] colPk = new DataColumn[1];
colPk[0] = ds.Tables[0].Columns["StoreID"];
ds.Tables[0].PrimaryKey = colPk;
//End Setting PK

After that i filter the data using this primary key like....

DataRow[] customerRow = ds.Tables[0].Select("StoreID = 1");

that means customerRow is the collection of all the filtered data of StoreID =1

if i want to edit its content i have to use this

customerRow[0]["StoreName"] = "Updated Company Name";
customerRow[0]["storeAddress"] = "Seattle";

my Problem is Begin From Here...
1. this is hard coded for the 0th index of datarow.
2. What happned if multiple rows are return how I can change them...? single row and multiple too?
3. How i Can update the updated Datarow to My Table..? also same case of multiple updated rows
4. after all manipulation upadate the data to actual database

I think last question should solved by

myDataAdapter.update(ds);

Please Help Me Sigh | :sigh:

Regards
Pankaj Joshi

Crystal Report

Nine_13-Jun-07 17:07

Nine_

13-Jun-07 17:07

Hi all
On my project I have created a connection and have retrieved some data from the database by using a stored proc. Here is the code:

string cnString = "Data Source=localhost;Initial Catalog=Northwind;User Id=MyName;Password=MyPassword";
SqlConnection cn = new SqlConnection(cnString);
SqlCommand cmd = new SqlCommand("sp_Products", cn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds,"Products");

The database is now storing in my dataset. But how can I send it to display on my reportviewer by using crystal report that comes with visual studio?

Thanks advance

Help me please

Nine_13-Jun-07 20:10

Nine_

13-Jun-07 20:10

hello...help me please!!!!!!!!!!!!!!!
i'm waiting for your answers.............

Re: Help me please

leckey14-Jun-07 4:13

leckey

14-Jun-07 4:13

A message like this is considered rude.

______________________
stuff + cats = awesome

Connection String: C# - SQL Srvr Compact

pgiambat13-Jun-07 14:57

pgiambat

13-Jun-07 14:57

Hello All,
I'm getting a basic Windows application going in C# using Visual Studio 2005 Express and SQL Server Express.
I've created a database (SQL Server Compact) and added a table, a column and some records.
The DB is on my box, XP Home.
I want to populate a ListBox with the four CUST_NAME records in the Form.

Box name: MAXPHOME
SQL Server: SQLEXPRESS
DB Name: OMA1
DB file: OMA1.sdf
Table in DB: CUSTOMER
Columns in CUSTOMER: CUST_PK, CUST_NAME
User Name: none
Password: none

I need a few pieces of code.

1 - DataBase connection string.
2 - Syntax to send the SQL ("SELECT * FROM CUSTOMER").
3 - Databinding the DB return to a windows control (ListBox, DropDown, TextBox) in a Windows Form.

I got some pieces of code from this site, I'm close but, I just can't get it....

Thanks,
Pat G.

Re: Connection String: C# - SQL Srvr Compact

Ben[dog]13-Jun-07 15:05

Ben[dog]

13-Jun-07 15:05

Connection string: http://connectionstrings.com/

for the rest, check this maybe http://www.codeproject.com/useritems/RetrieveMoreData.asp

Ben

Re: Connection String: C# - SQL Srvr Compact

Sathesh Sakthivel13-Jun-07 15:09

Sathesh Sakthivel

13-Jun-07 15:09

pgiambat wrote:
1 - DataBase connection string.

using System.Data.SqlClient;
...
SqlConnection oSQLConn = new SqlConnection();
oSQLConn.ConnectionString = "Data Source=(local);" +
"Initial Catalog=mySQLServerDBName;" +
"Integrated Security=SSPI";
oSQLConn.Open();

pgiambat wrote:
2 - Syntax to send the SQL ("SELECT * FROM CUSTOMER").

Yes that is correct.

pgiambat wrote:
3 - Databinding the DB return to a windows control (ListBox, DropDown, TextBox) in a Windows Form.

Get it[^]

Regards,

Satips. Rose | [Rose]

Re: Connection String: C# - SQL Srvr Compact

Not Active13-Jun-07 16:57

Not Active

13-Jun-07 16:57

Satips wrote:
...oSQLConn.ConnectionString = "Data Source=(local);..." +

This won't work.
You missed the part about SQL Server Compact Edition.

only two letters away from being an asset

Language Question

Ben[dog]13-Jun-07 14:56

Ben[dog]

13-Jun-07 14:56

Howdy fellow geeks,

This is just a sort of general C# question that doesn't really require a solution as there's many ways to work around, I'm just wondering.

Is it possible in C# (.NET 2.0) to define a get/set for a property with different access modifier for the get and the set.

That is, something like that:

private string _Prop;
public string Prop
{
    get
    {
        return _Prop;
    }
}
protected string Prop
{
    set
    {
        _Prop=value;
        /*
         Some additional processing code here
        */
    }
}

Obviously that doesn't work or I wouldn't ask the question Roll eyes | :rolleyes:

but maybe there's a different syntax to do so.. is there?
(while retaining the neatness of get/sets)

Cheers
Ben

Re: Language Question

Sathesh Sakthivel13-Jun-07 15:04

Sathesh Sakthivel

13-Jun-07 15:04

Hope Salil Pitkar here[^] gives a nice explanation for your Question.

Regards,

Satips. Rose | [Rose]

Re: Language Question

Ben[dog]13-Jun-07 15:15

Ben[dog]

13-Jun-07 15:15

Well, actually, yes it did, thanks! Smile | :)

The solution is in the comments at the end. Though I think the syntax extension suggested in the article itself is still interesting.

Cheers
Ben

Re: Language Question

Sathesh Sakthivel13-Jun-07 15:22

Sathesh Sakthivel

13-Jun-07 15:22

Glad to help always. Smile | :)

Regards,

Satips. Rose | [Rose]

Microcontroler

Alireza383913-Jun-07 14:30

Alireza3839

13-Jun-07 14:30

I am lokking for an article about micro contoroler?
Please give me some article about it.
thanks

Re: Microcontroler

Sathesh Sakthivel13-Jun-07 14:50

Sathesh Sakthivel

13-Jun-07 14:50

Hope this[^] may Help you.

Regards,

Satips. Rose | [Rose]

WAV File Format

max2929713-Jun-07 13:42

max29297

13-Jun-07 13:42

Does anyone know where I could find some good documentation on the WAV file format? A lot of what I've found is sort of hard to understand.

P.S. Sorry if this isn't the right board to post this question; I couldn't find a specific board related to file formats, audio, etc, and I usually ask questions here, so...

-----
Note: *** Never give me an answer have anything to do with Visual Studio. I don't have this program, and it'll be that way for a long, long time. ***

Re: WAV File Format

Not Active13-Jun-07 14:03

Not Active

13-Jun-07 14:03

WAV file format for Dummies[^]

only two letters away from being an asset

Form Hide Dont Close

gvanto13-Jun-07 13:34

gvanto

13-Jun-07 13:34

I have a main window application, mainForm.

At some point, I create an auxhiliary window, auxWin.
For auxWin, rather than disposing the object when user closes the window (clicks the x in top right), I want to hide the object instead (and simply show it when the user opens it again).

I kind of got close by intercepting the FormClosing event with the following:

<br />
<br />
private void CatchFormClose(object sender, FormClosingEventArgs e)<br />
        {<br />
                this.Hide();<br />
                e.Cancel = true;<br />
            <br />
        }<br />
<br />

where e.Cancel stops the system from disposing the window.

This works fine, but the problem comes in when I try to close the main application, mainForm - it now 'hides' it too! (in effect nothing happens, which is bad since I want it to close!). I put a breakpoint at this.Hide() and it gets called which is surprising (even though this event-handling method is in auxForm ??). I have tried doing a check with:

<br />
if(sender.GetType() == typeof(auxForm))<br />

but this doesn't work - it ALWAYS thinks its the auxForm that raised the event.

Am I going about this the right way? If someone could point me in the direction of how windows forms (and their opening and closing, without disposing objects - which I understand is bad for memory usage too) are managed I'd greatly appreciate it!

Many thanks,
Gerry
Forms newbie

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