Re: Windows Forms DataGrid View Clearing Problem - C# Discussion Boards

14-Dec-07 1:25

Hi,
I am using a DataGrid View on my windows forms.
I want to clear all the rows of the grid on certain event, for that i tried to set the data source property to null. But it also cleared the columns.
I also tried to use the clear function of the rows ut it was of no help;
How can i just clear teh rows and let the columns be intact in there.

Thanks.

Deepak Surana

ChandraRam14-Dec-07 1:32

ChandraRam

14-Dec-07 1:32

deepaks3 wrote:
I am using a DataGrid View on my windows forms.
I want to clear all the rows of the grid on certain event, for that i tried to set the data source property to null. But it also cleared the columns.
I also tried to use the clear function of the rows ut it was of no help;
How can i just clear teh rows and let the columns be intact in there.

Clearing a row would surely clear columns too?

Can you give an example of what the result you are looking for?

deepaks314-Dec-07 1:35

14-Dec-07 1:35

Ok,
There are cerain no of rows in the grid, so when i click on the clear button i want that only the column names should be visible but not any rows.

And i have aded the columns on the design time, so i want to retain those columns.

Deepak Surana

ChandraRam14-Dec-07 1:49

ChandraRam

14-Dec-07 1:49

Isn't there a Rows collection that you can clear? AFAIK, it shouldn't change the column headers...

dipak.dipak14-Dec-07 2:03

dipak.dipak

14-Dec-07 2:03

You may clear the value in loop using row index and column index;
for example: setting null to Row index 0, Column index 0
dgvItemList.Rows[0].Cells[0].Value = "";

I think, u got it. Best of Luck.

Dipak

Brady Kelly14-Dec-07 2:05

Brady Kelly

14-Dec-07 2:05

dataGridView1.Rows.Clear();

My head asplode!

Calling all South African developers! Your participation in this local dev community will be mutually beneficial, to you and us.

deepaks314-Dec-07 3:17

14-Dec-07 3:17

Rows.Clear() isnt working..

Deepak Surana

Justin Perez14-Dec-07 3:39

Justin Perez

14-Dec-07 3:39

Instead of trying to clear the rows on the dataGridView, try clearing the rows on it's data source. lets sat the source of the datagridView is in a DataSet. Lets just make this one up: this.YourDataSet.YourDataTable. Clear the rows from the DataTable, and the DataGridView will see the changes in the DataTable and reflect the cleared rows. Try this:
this.YourDataSet.YourDataTable.Clear();

"If an Indian asked a programming question in the forest, would it still be urgent?" - John Simmons / outlaw programmer

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

deepaks314-Dec-07 17:44

14-Dec-07 17:44

Actually its very simple...
grid.datasource = null;
grid.rows.clear();
grid.refresh();

and a Indian Programmer gave me the solution by the way....
so if an Indian asked a programming question in the forest .... it will be Urgent.. and i think only Indians can solve it.. no others.. Poke tongue | ;-P

Deepak Surana

An Array problem

zeeShan anSari14-Dec-07 1:19

zeeShan anSari

14-Dec-07 1:19

Hi,
i want add(not sum) the two difrrent integer veriables value in an array
like this
int i=14;
int j=15;

int []array=new int[3];

array[0]=??? i j

then out of array[0]=1415

I AM WORKING ON "PLOTTER ROBOT"(FYP).

zeeShan anSari14-Dec-07 1:24

zeeShan anSari

14-Dec-07 1:24

if i use
string [] str=new string[3];
int i=14;
int j=15;
array[0]=""+i+""+j;
then
array[0]=1415

is it possible in int[]?

I AM WORKING ON "PLOTTER ROBOT"(FYP).

ChandraRam14-Dec-07 1:30

ChandraRam

14-Dec-07 1:30

Convert the two integers into strings, concatenate and assign.

ctoma200514-Dec-07 5:10

ctoma2005

14-Dec-07 5:10

You get the number if digits in j(it's easier to covert it to string and use the Length property)

private static string Add(int i, int j)
{
int result = (int)(i * (int)Math.Pow((double)10, (double)(j.ToString().Length)) + j);

return result.ToString();
}

Be carefull..this method returns the result as a string..as "adding" to integers might be bigger than Int32.MaxValue !

Re: Socket Connection Fails

ctoma200514-Dec-07 5:12

ctoma2005

14-Dec-07 5:12

Ups..I didn't see that someone already answered.. sorry

Socket Connection Fails

Arun Abraham Jose14-Dec-07 1:11

Arun Abraham Jose

14-Dec-07 1:11

Hi,

I have a Client Server Application that communicates through
socket.
The Client is a VC++(6.0 version) and the Server is a C# application.
While trying to connect to the Socket from the VC++ application by entering the ip for example in - 012.220.200.001 - format I am unable to connect to the listening Socket. I get 10061 or 10049 exception.
But when I try to connect to the Socket server by entering the ip in the format 127.000.000.001(localhost), I am able to connect.

I want to connect to the Server by entering the ip address in either ways.

Please suggest.

Let me know if I will have to change the listen functionality which is currenty
Socket workerSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp)

IPEndPoint ipLocal = new IPEndPoint (IPAddress.Any, port);
m_mainSocket.Bind( ipLocal );
m_mainSocket.Listen(4);
With Thanks and Regards,

Abraham Chethuvelil

Anthony Mushrow14-Dec-07 2:25

Anthony Mushrow

14-Dec-07 2:25

Are you in a local network? ie. Connected to the internet through a router or similar?

Because if you are, and you enter your IP address, you are besically sending the request to the router, which has no idea what machine to pass it on to.
You'd have to set up some port forwarding to get it to work.

My current favourite word is: Bauble!

-SK Genius

Re: Socket Connection Fails

mav.northwind14-Dec-07 2:41

mav.northwind

14-Dec-07 2:41

Hi!
I think the format of your IP address is screwed.
If you start it with '0' the numbers will be interpreted as octal.
I just tried a ping to "012.220.200.001" and ping told me that it actually tried to connect to 10.220.200.1!

Regards,
mav

--
Black holes are the places where God divided by 0...

[Message Deleted]

Burim Rama14-Dec-07 0:25

Burim Rama

14-Dec-07 0:25

[Message Deleted]

Sun Rays14-Dec-07 0:34

Sun Rays

14-Dec-07 0:34

Member 3499052 wrote:
How can i calculate this text box.
TextBox1.Text = "1+2+3";
to giv me int total = 6;

Hi,
you can do this with below code..

<br />
int i = 1+2+3;<br />
TextBox1.Text = i.ToString();<br />

Hope it will help you.

Thanks,
Sun Rays

To get something you must have to try once.

My Articles

Burim Rama14-Dec-07 0:45

Burim Rama

14-Dec-07 0:45

thanks but i think we misunderstud

i have a gridview where you can clik on row and the value of the row is typing in textbox
like this

this is a textbox.Text = 1+3+4+5+6.
now a need a function to calculate that.

i have this code

int i = Convert.ToInt32(TextBox1.Text);
Label1.Text = i.ToString();

But its not working ;-(

Thanks very mutch..

Sun Rays14-Dec-07 1:00

Sun Rays

14-Dec-07 1:00

Hi,
first of all what are you diong ? what you wanna do its yet not clear.

Member 3499052 wrote:
textbox.Text = 1+3+4+5+6

<br />
int i = 1+3+4+5+6; // you can calculate here<br />
textbox.Text =i.ToString(); // here you can convert i to string

Now

Member 3499052 wrote:
int i = Convert.ToInt32(TextBox1.Text);
Label1.Text = i.ToString();

No need for this,

Just write,

Label1.Text = TextBox1.Text;

Thanks,
Sun Rays

To get something you must have to try once.

My Articles