Selection of custom control - C# Discussion Boards

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Re: difference between

IamMohan4-Dec-06 23:15

IamMohan

4-Dec-06 23:15

The first one (System.Array.CopyTo()) performs a deep copy of the array, the second
one(System.Array.Clone()) is shallow copy of the array Smile | :)

Mohan

Re: difference between

Bhupi Bhai4-Dec-06 23:48

Bhupi Bhai

4-Dec-06 23:48

Mohan,
Neither of the two perform deep copy. Both CopyTo and Clone perform Shallow copy.

Regards,
Bhupi Bhai.

Re: difference between

jdkulkarni5-Dec-06 0:58

jdkulkarni

5-Dec-06 0:58

Visit
http://www.thescripts.com/forum/thread269691.html[^]
One para from the same.
A copyto makes a copy of the values in/from a one dimensional array (where
the type of the sender and the receiver has to be the same and the receiver
completly exist already).

A clone copies the references, therefore using the references in the clone
will have the same effect on the referenced objects as using the original
array. Although you can have at a certain moment in a clone more references
than in the original or/and visa versa.

A deepcopy you have to make yourself. The system does not know what objects
you have added to by instance your arraylist. (It can be by instance a
thousand times deep arraylist).

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

ListView : Subitem selection

Sarvan AL4-Dec-06 18:35

Sarvan AL

4-Dec-06 18:35

Hi Everybody,

Could you help me out from the following problems
related to List view (View: Details) ?

1) How to select the subitem?
2) How can I select one subitem and an item (if possible) ?
3) How to make both items & subitems editable?

Thanks in advance,
Sarvan AL

Re: ListView : Subitem selection

rah_sin4-Dec-06 19:19

rah_sin

4-Dec-06 19:19

for selecting item in listview u can try

foreach(ListViewItem lstitm in listView1.Items)
{
if(lstitm.Index==0)
{
lstitm.Selected=true;
}
}

where lstitm.Index is the row number which u want to select
and for editing the subitem u can try

foreach(ListViewItem lstitm in listView1.Items)
{
if(lstitm.Index==0)
{
lstitm.SubItems[0].Text="xyz";
}
}

rahul

Project Book

sanjaybs20014-Dec-06 18:17

sanjaybs2001

4-Dec-06 18:17

I need a C# sample project book,

for datadriven application and winsock programming

Re: Project Book

Mandaar Kulkarni4-Dec-06 20:08

Mandaar Kulkarni

4-Dec-06 20:08

For Data driven applications you can refer 'Data-Centric .net programing with c#' wrox publication.

Selection of custom control

sachin414064-Dec-06 18:17

sachin41406

4-Dec-06 18:17

Using C#.net we have created a custom Textbox control derived from System Textbox class. We alse have a customized design surface,toolbox,propertygrid. The control is dragged and dropped on the design surface and its properties are displayed in propertygrid.

1. Custom textbox is not directly linked to propertygrid ( propertygrid.selectedobject=ObjTextbox is not used)
2. When we change Location/Size of the control using mouse we are unable to update the propertygrid
3. The object resizing does not happen physically.
4. When we drag the control to a different location on design surface, control comes back to its initial position.

Any help is appreciated.
Thanks in advance.

Retrieving a connection String

mohd imran abdul aziz4-Dec-06 18:11

mohd imran abdul aziz

4-Dec-06 18:11

Hi,
Myself imran, I am quite new to dotnet. i am developing web application using asp.net and C#(Visual Studio 2005). i have defined connection string in web-config

Can any one help me to know How to Access database using this connetion string.

thanks

regards
imran khan

Re: Retrieving a connection String

Guffa4-Dec-06 18:33

Guffa

4-Dec-06 18:33

Welcome to The Code Project.

Please don't post the same question all over the place. Pick the forum that best fits your question.

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Re: Retrieving a connection String

sanjaybs20014-Dec-06 19:26

sanjaybs2001

4-Dec-06 19:26

OleDbConnection dbConnection;

dbConnection = new OleDbConnection();

dbConnection.ConnectionString = "Provider = Microsoft.Jet.OLEDB.4.0; " +

"Data Source = " + Application.StartupPath + "\\Data.mdb";

Re:Windows Application for MDI and Child form using menu strip

P.T.R.K4-Dec-06 17:59

P.T.R.K

4-Dec-06 17:59

Hi ,

I want to windows application(C#/VB) example for MDI form and Child Form using menu strip (like as Visual Basic6.0).

Thanks in advance,

Rameshkumar

Error While opening c# project in VS 2005

JeganB4-Dec-06 17:34

JeganB

4-Dec-06 17:34

When i try to open windows/web application(...in c#)....
its throwing the error message states that....visual c# 2005 compiler could not be created....the system cant find the object specified..... i reinstalled the whole frame work still its giving me the same error...

It is working for VB applications.

can anyone of u help me ...asap

Re: Error While opening c# project in VS 2005

imshimshal6-Dec-06 19:18

imshimshal

6-Dec-06 19:18

may be ur application is built in VS 2003 which first require conversion to VS 2005.

Database Error

mfcuser4-Dec-06 17:25

mfcuser

4-Dec-06 17:25

I tried to insert some value to a table, I received the following error

<br />
no value given for one or more required parameters<br />

Here is the code; the ID field is the primary key autoincremented, I don't know how to set it; I simply set it to 1

<br />
OleDbConnection dbConnection;<br />
<br />
            dbConnection = new OleDbConnection();<br />
<br />
            dbConnection.ConnectionString = "Provider = Microsoft.Jet.OLEDB.4.0; " +<br />
<br />
                "Data Source = " + Application.StartupPath + "\\Data.mdb";<br />
<br />
 <br />
<br />
            string sqlstr = "INSERT INTO Datas(ID, FirstName, LastName , Function, Description, SDate, EDate, THour)" +<br />
<br />
                            "VALUES(1, John, Do, FunctionOne, DescriptionOne, 12-02-03, 12-02-06, 20)";//dates are text<br />
<br />
 <br />
<br />
            OleDbCommand cmd = new OleDbCommand(sqlstr, dbConnection);<br />
<br />
 <br />
<br />
            try<br />
<br />
            {<br />
<br />
                dbConnection.Open();//open the database<br />
<br />
                cmd.ExecuteNonQuery();<br />
<br />
                dbConnection.Close();<br />
<br />
            }<br />
<br />
            catch (Exception ex)<br />
<br />
            {<br />
<br />
                MessageBox.Show(ex.Message, "Database Error");<br />
<br />
            }<br />
<br />

Re: Database Error

JeganB4-Dec-06 18:01

JeganB

4-Dec-06 18:01

if ID column is identity field
you are not suppose to include the column in insert list and values list

Re: Database Error

Guffa4-Dec-06 18:28

Guffa

4-Dec-06 18:28

You have forgotten to put apostrophes around the string values.

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b { font-weight: normal; }

Re: Database Error

mfcuser5-Dec-06 2:50

mfcuser

5-Dec-06 2:50

What do you mean by putting string? I assume you mean something like that 'FunctionOne', etc. I will try that this evening.

Re: Database Error

sanjaybs20014-Dec-06 19:23

sanjaybs2001

4-Dec-06 19:23

There may be some other fields in the table which do not allow null values

or

John, Do, FunctionOne, DescriptionOne --- if these are variable then

may be values are null or empty string.

how to write the query to select 10 record from database

Rmesh4-Dec-06 16:38

Rmesh

4-Dec-06 16:38

how to write the query to select 10 record from database

Re: how to write the query to select 10 record from database

Not Active4-Dec-06 17:25

Not Active

4-Dec-06 17:25

Depends where the 10 records are. SELECT TOP 10 will get the first ten records matching the criteria. If you want 10 records in teh middle or end then you have more work to do.

only two letters away from being an asset

Re: how to write the query to select 10 record from database

sanjaybs20014-Dec-06 18:14

sanjaybs2001

4-Dec-06 18:14

Select top 10 * from <tblname>

Re: how to write the query to select 10 record from database

Rmesh4-Dec-06 21:08

Rmesh

4-Dec-06 21:08

ok how to get next 10 records from table ?how to write query to get it

Re: how to write the query to select 10 record from database