Re: To bind a value from DataGridView to textbox - C# Discussion Boards

Re: A typical case about interfaces

5-Jun-07 21:27

I wrote you code in the previous replies it self.

In your case:

A aa = new A();

//Cast it to interface
Interface1 interface1 = aa;

//Now u can call the Function ReturnString1

interface1.ReturnString1();

Also you can write it as:

((Interface1)aa).ReturnString1();

Manoj
Never Gives up

amitcoder835-Jun-07 21:32

amitcoder83

5-Jun-07 21:32

thank u very much for ur proper consultation.

Please Help

codingrocks5-Jun-07 20:07

5-Jun-07 20:07

I am doing a project and completed some phases...

I am using Microsoft Visual Studio 2005 Version 8.0.50727.42 (RTM.050727-4200)and
Microsoft .NET Framework Version 2.0.50727

Microsoft Visual C# 2005 with MS SQL server 2000

I am getting a problem when i try to extract a data from rows or columns to a textbox...
the connectivity works well...

how can i do it...?

plz help.....

SAJAN A PILLAI
C#.NET Programmer
TELESOFT INDIA PVT LTD...
BANGALORE

Re: Please Help

Christian Graus5-Jun-07 20:14

5-Jun-07 20:14

I recommend reading any of the guides commonly available online on how to ask questions.

1 - the information you provide about your version is superfluous, VS2005 would have been fine
2 - your header is meaingless, 'please help' says nothing about your problem
3 - how can we help you without seeing the code you've written ? WE have no idea how you are hoping to bind a textbox to a value, or how you know that connectivity works well, despite your issue.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

[Message Deleted]

codingrocks5-Jun-07 20:25

Re: To bind a value from DataGridView to textbox

5-Jun-07 20:25

[Message Deleted]

Christian Graus5-Jun-07 20:43

Re: To bind a value from DataGridView to textbox

5-Jun-07 20:43

I don't know if there's an automated way to do this, or if you need to write your own plumbing code to assign the values and then push them back into the DB as needed.

Manoj Kumar Rai5-Jun-07 20:46

Re: To get a selected value from datagrid view

5-Jun-07 20:46

You can set the DataGridview enditable. In the Save button handler code get the edited data from the grid and updated into the database.

Manoj
Never Gives up

Manoj Kumar Rai5-Jun-07 21:06

Re: To get a selected value from datagrid view

5-Jun-07 21:06

something like below:

dataGridView1.SelectedRows[0].Cells[0].Value will give you the valuse of cell#1 from the 1st row selected.

Manoj
Never Gives up

codingrocks5-Jun-07 21:12

Re: To get a selected value from datagrid view

5-Jun-07 21:12

when i am assigning it to a textbox like

txtcuscode.Text= dataGridView1.SelectedRows[0].Cells[0].Value;

shows an error message like this following..

Cannot implicitly convert type 'object' to 'string'.

plz help me recover this and thanks a lot for the code.....

SAJAN A PILLAI

C#.NET Programmer
TELESOFT INDIA PVT LTD...
BANGALORE

Manoj Kumar Rai5-Jun-07 21:13

Cast done to string ..but error comes

5-Jun-07 21:13

cast "dataGridView1.SelectedRows[0].Cells[0].Value" to a string.

Manoj
Never Gives up

codingrocks5-Jun-07 21:20

Re: Cast done to string ..but error comes

5-Jun-07 21:20

casting done to string...

but error appears...like

Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

the error is at this line...

txtcuscode.Text= Convert.ToString(dataGridView1.SelectedRows[0].Cells[0].Value);

the error handler points to the property text of the textbox...

help me overcome this..

SAJAN A PILLAI

C#.NET Programmer
TELESOFT INDIA PVT LTD...
BANGALORE

codingrocks5-Jun-07 22:19

i am newbie to the C#, and i don't know which using directive is to use for SecureFileElement. [modified]

5-Jun-07 22:19

thanks for ur help

finally i did it....

SAJAN A PILLAI

C#.NET Programmer
TELESOFT INDIA PVT LTD...
BANGALORE

Ulhas Morbale5-Jun-07 19:50

Ulhas Morbale

5-Jun-07 19:50

i am newbie to the C#, and i don't know which using directive is to use for "SecureFileElement".
i am getting the error as-
"Error The type or namespace name 'SecureFileElement' could not be found (are you missing a using directive or an assembly reference?)"

any help is much appreciated.

Thanks in advance.

by ULZ

-- modified at 2:00 Wednesday 6th June, 2007

cheers
ULZ

Re: i am newbie to the C#, and i don't know which using directive is to use for SecureFileElement.

Christian Graus5-Jun-07 20:20

Re: i am newbie to the C#, and i don't know which using directive is to use for SecureFileElement.

5-Jun-07 20:20

SecureFileElement is not a class in the .NET framework, according to google.

http://www.paulusevan.net/default.aspx[^] is the only reference to this class name I can find online. He's creating a custom config entry.

I recommend getting a handle on C# before you start trying to copy and paste code from the web.

Ulhas Morbale5-Jun-07 20:38

Ulhas Morbale

5-Jun-07 20:38

thanks for ur quick reply.

Your recommandation is obious but i don't have that much time to get handle on C# for resolve this problem.
I am side by side reading the C# professional book.
U plz suggest any other book to get handle on C#.

tahnks u very much for ur help.

by ULZ

Re: i am newbie to the C#, and i don't know which using directive is to use for SecureFileElement.

Christian Graus5-Jun-07 20:52

Re: Message Queue Processing

5-Jun-07 20:52

ulhas555 wrote:
Your recommandation is obious but i don't have that much time to get handle on C# for resolve this problem.

To resolve this problem, get the code that defines this class into your project. But, given that this code relates to security issues, I'd worry deeply about having my security code written by someone who is copying code off the web and posting in online forums about how to make it work.

ulhas555 wrote:
U plz suggest any other book to get handle on C#.

Inside C# is a good book, if out of date.

Message Queue Processing

M. J. Jaya Chitra5-Jun-07 19:45

M. J. Jaya Chitra

5-Jun-07 19:45

I have the following doubts in message queue processing

1. Is there any possibility to sort out the message queue according to the priority and other category?

2. Can i add more body to a single message?

3. Is there any provision to read the message without removing it from the queue i.e. peek in file manipulation?

4. Can i use public queue to write the messages and to read the messages from the other system.

Plz help me in order to make my program innovative

Best Regards,
M. J. Jaya Chitra

SimulationofSai5-Jun-07 20:53

SimulationofSai

5-Jun-07 20:53

M. J. Jaya Chitra wrote:
1. Is there any possibility to sort out the message queue according to the priority and other category?

No. You can however put in your own logic by peeking into all messages and moving the messages to a custom queue according to its priority.

M. J. Jaya Chitra wrote:
2. Can i add more body to a single message?

M. J. Jaya Chitra wrote:
3. Is there any provision to read the message without removing it from the queue i.e. peek in file manipulation?

Yes. The Message class also has a peek method.

M. J. Jaya Chitra wrote:
4. Can i use public queue to write the messages and to read the messages from the other system.

Yes. That's what public queues are for.

Re: Message Queue Processing

M. J. Jaya Chitra5-Jun-07 21:00

M. J. Jaya Chitra

5-Jun-07 21:00

Thank you so much, now only i got the idea by searching through the net that it automatically sorts according to the priority.

Best Regards,
M. J. Jaya Chitra

Opening ComboBox programmatically?

kbalias5-Jun-07 19:21

kbalias

5-Jun-07 19:21

Hi
I am using Visual Studio 2005 and C# to develop a windows application. I am binding a DataTable to a ComboBox. What I am trying to do in the ComboBox control is to keep track of the text the user enters in the editable part of the ComboBox. I am using the TextChanged event of the ComboBox and each time the text change I want to use that text and query the DataTable and repopulate the ComboBox with all the names that start with that text. I problem I am having is that I also want to open the dropdown part of the ComboBox programmatically when the TextChanged event of the ComboBox fires so that the user can see which names start with his input and then it gives him the chance of selecting a name rather than typing the rest. I tried using the following code in the TextChanged event:

comboBox1.DroppedDown = true;

It does open up the ComboBox, but the mouse pointer disappears then as soon as the pointer enters the windows form that the ComboBox is on. When I try the code inside a button Click event it seems to work fine and the mouse pointer remains visible. Is this a bug in Visual Studio and is there a remedy for this?

Kobus

Re: Opening ComboBox programmatically?

Manoj Kumar Rai5-Jun-07 20:41