Re: MultiSelect With ListBox - C# Discussion Boards

Re: Help me in save values in app.config and retrieve it .

AndriyZZ21-Sep-06 12:02

21-Sep-06 12:02

I'm sorry. I've provided solution for .NET 2.0. You apparently have .NET 1.1. Am I right? As I know only config reading is possible for .NET 1.0 but I can be mistaken. If I'm right you can use xml to work with configuration. Have a luck.

Andriy Zhornyk, with best regards.

Setting the CommandTimeout of a query in VS 05

Ami Bar21-Sep-06 8:25

Ami Bar

21-Sep-06 8:25

Hi,

I created a dataset with the designer of the VS 05 and added a query into it.
I found out that this query takes some time on slow computers and I want to make the CommandTimeout larger.
I checked the properties of the query and I can change several parameters like the CommandText and the CommandType, but the CommandTimeout is missing.

I don't want to change the CommandTimeout within the code generated by the designer, because it will be deleted each time I update the scheme.

So how can I do this without changing the designer's code?

I thought about using partial class, but I don't have an idea of how to do this.

Ami

how to keep the menubar form scrolling in vs 2005

needtoknowC#21-Sep-06 7:21

needtoknowC#

21-Sep-06 7:21

Hi, I am creating forms that use a menubar (file-save,print, etc.). In visual studios 2003 I could keep the menubar from scrolling by selecting true in the locked property field. I 2005 I even though I lock it for some reason it still scrolls with the form.

Do you know a way to keep the menubar from scrolling with the form in vs 2005

Thanks

How I can get the text from x,y coordinates?

Marco225021-Sep-06 7:08

Marco2250

21-Sep-06 7:08

Hi all.

I'd search in the board how an can get text that is at the coordinate x,y (I have a flexgrid on external program and want to get the text of some row/column by its x,y coordinates).

I didn't found nothing. Can someone help me?

Please, help me.

Thx in advance.
Best Regards,
Marco Alves.

MultiSelect With ListBox

ytubis21-Sep-06 6:08

ytubis

21-Sep-06 6:08

Hi guys!
I have drag and drop with 2 ListBoxes.
Now i need to chage them to Multi Select mode.
How can i do it, and what i need to add in the code for it?

Re: MultiSelect With ListBox

Ed.Poore21-Sep-06 6:13

Ed.Poore

21-Sep-06 6:13

ytubis wrote:
How can i do it

By writing code

ytubis wrote:
what i need to add in the code for it?

A brain & some time to think

As of how to accomplish that have you ever tried Google?

Failing that try Badger | [badger,badger,badger,badger...]

Re: MultiSelect With ListBox

ytubis21-Sep-06 6:22

ytubis

21-Sep-06 6:22

Yes I tried and i always get the VB examples and not the C#

Re: MultiSelect With ListBox

Ed.Poore21-Sep-06 6:36

Ed.Poore

21-Sep-06 6:36

What exactly is your problem? The whole concept or a particular bug?

As of how to accomplish that have you ever tried Google?

Failing that try Badger | [badger,badger,badger,badger...]

Re: MultiSelect With ListBox

Eric Dahlvang21-Sep-06 8:23

Eric Dahlvang

21-Sep-06 8:23

Change the SelectionMode to one of the following:

SelectionMode.MultiExtended;<br />
SelectionMode.MultiSimple;

listBox1.SelectionMode = SelectionMode.MultiExtended;
listBox2.SelectionMode = SelectionMode.MultiExtended;

--EricDV Sig---------
Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them.
- Laurence J. Peters

Get File Encoding

cecildt21-Sep-06 6:07

cecildt

21-Sep-06 6:07

Hi,

Does anyone know of a way to detect a text file's encoding (ANSI, UTF8, UTF7)?
So that I can read the text file in a StreamReader with the right Encoding enabled.

thanks

Re: Get File Encoding

Ed.Poore21-Sep-06 6:37

Ed.Poore

21-Sep-06 6:37

It should automagically do it for you, just use a constructor which doesn't accept an Encoding value.

As of how to accomplish that have you ever tried Google?

Failing that try Badger | [badger,badger,badger,badger...]

ListBox Multi Select

ytubis21-Sep-06 6:02

ytubis

21-Sep-06 6:02

Hi All!
I have 2 ListBoxes that i drag and drop with them from each other.
Now i need to chage them to Multi Select mode.
How can i do it, and what i need to add in the code for it?

Re: ListBox Multi Select

Syed Mujtaba Hassan22-Sep-06 23:15

Syed Mujtaba Hassan

22-Sep-06 23:15

Try using checkboxes in your listbox.

Mujtaba

delete statement in trial version

faladrim21-Sep-06 5:23

faladrim

21-Sep-06 5:23

hi,
im working in a trial version of vs2005
and if i am useing databases, link them with a datagrid using the wizard, it doesn't generate a delete statment, therefor i always get an error when i want to delete and update afterwords.
this is the error:
update requires a valid delete command when passed datarow collection with deleted rows

could this be because of the trial??
plllzzzzz help meeeee

Re: delete statement in trial version

Judah Gabriel Himango21-Sep-06 5:49

Judah Gabriel Himango

21-Sep-06 5:49

faladrim wrote:
could this be because of the trial??

No. It's more likely that you'll need to add a valid delete statement.

Also, a trial of Visual Studio? Do you mean the Visual Studio Express version? If so, that's not a trial.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Dumbest. Movie. Title. Evaaar.
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

DataGridView - check a CheckBoxCell

C-Scharbe21-Sep-06 5:03

C-Scharbe

21-Sep-06 5:03

can somebody help me?
Confused | :confused:

how can i check a checkbox in a checkbox cell?
my currenty code is like that:

<br />
colValueCheckBox.TrueValue = "1";<br />
<br />
DataGridViewCheckBoxCell cellValue = colValueCheckBox.CellTemplate.Clone() as DataGridViewCheckBoxCell;<br />
<br />
cellValue.Value = "1";<br />
gridRow.Cells.Add(cellValue);<br />
grid.Rows.Add(gridRow);<br />

but it doesent check the box in that cell

(i need some code to check this box! - can be different to that)

THNX

Re: DataGridView - check a CheckBoxCell

Judah Gabriel Himango21-Sep-06 5:09

Judah Gabriel Himango

21-Sep-06 5:09

I'm not too familiar with the DataGridView, but have you tried doing something like cellValue.Value = true; ?

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Dumbest. Movie. Title. Evaaar.
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

Re: DataGridView - check a CheckBoxCell

C-Scharbe21-Sep-06 5:13

C-Scharbe

21-Sep-06 5:13

ok thats what i already tried to check this box, too:

<br />
cellValue.Value = true;<br />
cellValue.Value = colValueCheckBox.TrueValue;<br />

i also tried cellValue.Value = true; without setting any TrueValue or FalseValue.
i also tried to test it with ThreeState = true;.

Re: DataGridView - check a CheckBoxCell

C-Scharbe21-Sep-06 21:02

C-Scharbe

21-Sep-06 21:02

Ok, i found the answer, i added the checkboxcell to a invisible column, and i didn't think about that as i add the cell of a row.

Unsure | :~

Loading and using an unmanaged DLL

ldr_21-Sep-06 4:59

ldr_

21-Sep-06 4:59

Hi all

Im trying to load a dll programmed in C, but I'm not sure exactly how to go about it. I read the following article:
http://msdn.microsoft.com/msdnmag/issues/02/08/CQA/

My problem is that Im not quite sure how to handle the return types. In the header file I several type definitions. Below you see some of the type definitions and two of the methods availeble in the DLL.

/********************** H FILE TOP *************************/<br />
<br />
#if defined (OMA_LIB_INTERNAL)<br />
# define OMA_DLLEXPORT DLLEXPORT<br />
<br />
#else<br />
# define OMA_DLLEXPORT DLLIMPORT<br />
#endif<br />
<br />
/****** Constants *******/<br />
#define OmaC_Ov_Default_Report_Name ""<br />
#define OmaC_Ov_Global_Object_Path ""<br />
#define OmaC_Ov_Unspec_Str "unspecified"<br />
<br />
/****** Type Definitions *******/<br />
typedef struct OmaT_Ov_Writer OmaT_Ov_Writer;<br />
typedef struct OmaT_Ov_Reader OmaT_Ov_Reader;<br />
typedef struct OmaT_Ov_Vector OmaT_Ov_Vector;<br />
typedef struct OmaT_Ov_Reader_Iterator OmaT_Ov_Reader_Iterator;<br />
......<br />
<br />
<br />
/******************** FUNCTIONS *************************/<br />
<br />
OMA_DLLEXPORT OmaT_Ov_Reader *<br />
Oma_Ov_Reader_Open (const char *ov_file_name);<br />
<br />
OMA_DLLEXPORT OmaT_Ov_Vector *<br />
Oma_Ov_Reader_Vector_Get (OmaT_Ov_Reader *ov_reader_ptr,<br />
const char *report_name, const char *obj_path,<br />
const char *group_and_stat_name);<br />
......

My question is: How I use import this DLL?

At the moment I have an idea that it should be something like the following, but I have no clue how to define the structs which Im using and which gets returned. See below:

public class OMAInterface<br />
{ <br />
<br />
// I guess I have to make a C# struct to get the OmaT_Ov_Vector<br />
[StructLayout(LayoutKind.Sequential)]<br />
public struct OmaT_Ov_Vector<br />
{<br />
      // ??? how would I go about creating a struct for this type?<br />
}<br />
<br />
// The same accounts for the OmaT_Ov_Reader which is used every time the ov file is read<br />
[StructLayout(LayoutKind.Sequential)]<br />
public struct OmaT_Ov_Reader<br />
{<br />
      // again I dont know how to construct this<br />
}<br />
<br />
// Conversion of types is not considered yet  <br />
[DllImport("opoma_opt.dll")]<br />
public static extern OmaT_Ov_Reader* Oma_Ov_Reader_Open (const char *ov_file_name);<br />
{}<br />
<br />
// Conversion of types is not considered yet <br />
[DllImport("opoma_opt.dll")]<br />
public static extern OmaT_Ov_Vector* Oma_Ov_Reader_Vector_Get (OmaT_Ov_Reader *ov_reader_ptr, const char *report_name, const char *obj_path, const char *group_and_stat_name);<br />
{}<br />
}

Any help is much appreciated

Christian

Indexer question

Andrei Ungureanu21-Sep-06 4:57

Andrei Ungureanu

21-Sep-06 4:57

Hi,
I have a small problem. I want to create 2 properties to one of my classes. All I want is to make easier for the users of my class to get some data out of my class. I want when a user writes

Test[i]

to get some data and when the user writes

Test[i][j]

to get another type of response.
I need a little help with the second type of property:

public class Test
{
  //some data

   public object this[int index]
   {
     get
     {
         //get data
     }
   }
}

This one works. My question is how to write the second one?
Thanks in advance

Do your best to be the best

Re: Indexer question

Colin Angus Mackay21-Sep-06 6:05

Colin Angus Mackay

21-Sep-06 6:05

The second is a result of the first.

Test[i][j] can be broken down like this:

B someB = someA[i];
object result = someB[j];

or it can be written in a compressed form like this:

object result = someA[i][j];

The classes look like this:

public A
{
    public B this[int index]
    {
        get
        {
            return stuff
        }
    }
}
 
public B
{
    public object this[int index]
    {
        get
        {
            return stuff
        }
    }

}