LISTBOX How to select more than one entry at the startup - C# Discussion Boards

Re: Convert String to byte[] and vice versa?

David Stone1-Apr-03 17:04

1-Apr-03 17:04

Usually when you're doing something that looks like it's a hackjob...you haven't looked hard enough for something in the Framework:

byte[] myByteArray = DoSomething();
System.Text.UnicodeEncoding encoder = new System.Text.UnicodeEncoding();
string result = encoder.GetString(myByteArray);

Hawaian shirts and shorts work too in Summer.
People assume you're either a complete nut (in which case not a worthy target) or so damn good you don't need to worry about camouflage...
-Anna-Jayne Metcalfe on Paintballing

Re: Convert String to byte[] and vice versa?

Member 961-Apr-03 18:34

Member 96

1-Apr-03 18:34

Aha! Thanks.

Re: Convert String to byte[] and vice versa?

Alexander Kojevnikov1-Apr-03 20:49

Alexander Kojevnikov

1-Apr-03 20:49

You should better use text or ntext field instead of image. You won't need any conversion in this case.

Alexandre Kojevnikov
MCP (SQL2K, Win/C#)
Leuven, Belgium

Creating MS Access Database?

BM_CSharp1-Apr-03 11:01

BM_CSharp

1-Apr-03 11:01

Hi, is there any way to create a MS Access database (.mdb) file using C# code and ADO.NET? I've done it in the past using ADOX (ADO Extensions). Does anybody know if I still have to use ADOX to do this?

Thanks,
Barry

How to assign executable's icon

Mmithat1-Apr-03 9:00

Mmithat

1-Apr-03 9:00

Where is the application icon is assigned? So the executable that my program creates, will have the icon that i want.
Thanks,

~Mithat

Re: How to assign executable's icon

Chris Jobson1-Apr-03 11:09

Chris Jobson

1-Apr-03 11:09

Select the project in the Solution Explorer, right-click and select properties, and there is a line for Application Icon. However, if it's a WinForms application the icon shown in the taskbar will be the one given by the main form's Icon property.

Chris Jobson

Re: How to assign executable's icon

CSharpTeam1-Apr-03 11:09

CSharpTeam

1-Apr-03 11:09

When compiling from the command line use the /win32icon command line option to csc.exe.

When building in the IDE set the Appliction Icon option. You can find it by right clicking on your project in the solution explorer, selecting the properties menu item. Appliction Icon is under Common Properties - General.

Cheers,
Peter
Microsoft C# Compiler Dev Lead

LISTBOX How to select more than one entry at the startup

Mmithat1-Apr-03 8:26

Mmithat

1-Apr-03 8:26

Hi All,
I have list box in one of of my form:

private System.Windows.Forms.ListBox listCampaign;

(InitializeComponent()) function contains those initializations for that list box:

this.listCampaign.Location = new System.Drawing.Point(80, 144);<br />
this.listCampaign.Name = "listCampaign";<br />
this.listCampaign.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;<br />
this.listCampaign.Size = new System.Drawing.Size(168, 69);<br />
this.listCampaign.TabIndex = 1;<br />
this.listCampaign.Visible = false;

And then I add the items to List Box.

listSkillSet.Items.Add("AB");<br />
listSkillSet.Items.Add("AC");<br />
listSkillSet.Items.Add("AD");<br />
listSkillSet.Items.Add("AE");

QUESTION:
Now I have 4 items in my list, I want to show 2 of em already selected.(at the beggining before user chooses - like telling him, we did choose for you already)
I know how to choose one item (highlighted i mean)
as in : listCampaign.SelectedIndex = 0;
But How you select more then one ?
(if I want to Choose (highlight) "AB" and "AC" at the same time
Thanks,

~Mithat

Re: LISTBOX How to select more than one entry at the startup

Chris Jobson1-Apr-03 11:02

Chris Jobson

1-Apr-03 11:02

Assuming that you have set the SelectionMode to MultiSimple or MultiExtended, code similar to the following will work:

      //Unselect all items (not needed if you've only just created the ListBox)<br />
      listBox1.SelectedIndex = -1;<br />
<br />
      //Select second, fourth, ..., items (each time a new item is assigned to<br />
      //.SelectedItem that item is added to the collection of selected items)<br />
      for (int i = 1; i < listBox1.Items.Count; i += 2)<br />
        listBox1.SelectedItem = listBox1.Items[i];

Chris Jobson

Re: LISTBOX How to select more than one entry at the startup

Mmithat1-Apr-03 12:30

Mmithat

1-Apr-03 12:30

It worked just fine,
Thank you very much =)

~Mithat

a .Net portal

Madhuri Mittal1-Apr-03 7:01

Madhuri Mittal

1-Apr-03 7:01

Hello,

I had written few articles for a major publishing company which unfortunately went out of business. I put together a website to publish these myself. The code samples are all in C#. Please check it out:

http://dotnetuser.www2.dotnetplayground.com/

Thanks

Madhuri

Madhuri Mittal

Re: a .Net portal (clickety police :) )

Ray Cassick1-Apr-03 8:54

Ray Cassick

1-Apr-03 8:54

Hey Madhuri!

http://dotnetuser.www2.dotnetplayground.com/[^]

Paul Watson wrote:
"At the end of the day it is what you produce that counts, not how many doctorates you have on the wall."
George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Unknown wrote:
"I love long walks, especialy taken by those that annoy me."
Paraphrased from TMNT:
"Cricket? You have to know what a crumpet is to understand Cricket."

Re: a .Net portal (clickety police :) )

Madhuri Mittal1-Apr-03 9:37

Madhuri Mittal

1-Apr-03 9:37

Hi! I am glad you found me here!

Madhuri Mittal

Nondismissable form

B.W.1-Apr-03 4:55

B.W.

1-Apr-03 4:55

Did anyone have the same experience in C# Winform application that you have a form can not be closed? I wonder what would be the possible reason for that?
Thanks.

Re: Nondismissable form

Le centriste1-Apr-03 6:40

Le centriste

1-Apr-03 6:40

Probably catching the Closing event and setting e.Cancel = true.

Re: Nondismissable form

James T. Johnson1-Apr-03 7:02

James T. Johnson

1-Apr-03 7:02

There is a known bug where if a control that has focus is removed from the parent form, the form will not be able to close.

The bug may have been more specific in that the control had to be inside of another control, but I can't remember (ie Form A has control B, which has control C; control C has focus and is then removed from B. Now A can't close). I do remember that the example to reproduce the bug had this set-up, but I can't remember if it was a requirement.

James

"It is self repeating, of unknown pattern"
Data - Star Trek: The Next Generation

Components

victorb1-Apr-03 4:04

victorb

1-Apr-03 4:04

I want to create a non-visual component that manipulates the form it is dropped onto. Is there a way to access this form from within the component?

Victor

Re: Components

Nnamdi Onyeyiri1-Apr-03 5:05

Nnamdi Onyeyiri

1-Apr-03 5:05

derive your class from Component, then it can appear in the toolbox, but when dropped into the form, appears in that little bar, like when you add an imagelist object (presuming you have vs.net). and can be accessed from the form.

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Re: Components

Andy Smith2-Apr-03 12:34

Andy Smith

2-Apr-03 12:34

not without telling the component what form it is attached to.
this is because most Components can be used from anywhere, not just forms.
that said, I also found this to be a useful idea, so I made a subclass of Component, FormComponent, which i talked about in this blog entry.

This component has a property which points to its Form, when dragged onto a form by a designer. no code required.

tlbimp.exe and Ildasm.exe?

econner1-Apr-03 3:40

econner

1-Apr-03 3:40

Hello,

Where are the tlbimp.exe and Ildasm.exe utilities located or can be downloaded from? I have done a search of my computer and they do not seem to be installed.

Thanks

Re: tlbimp.exe and Ildasm.exe?

pallep41-Apr-03 4:25

pallep4

1-Apr-03 4:25

Default Installion in

\Program Files\Microsoft Visual Studio .NET\FrameworkSDK\Bin

Re: tlbimp.exe and Ildasm.exe?

monrobot131-Apr-03 4:28

monrobot13

1-Apr-03 4:28

If you have Visual Stuido .NET installed (and used the default path) they are in C:\Program Files\Microsoft Visual Studio .NET\FrameworkSDK\Bin If you don't have Visual Stuido .NET then you need to download the Framework SDK

If you want to use them you can just open up the Visual Studio .NET Command Prompt

- monrobot13

Re: tlbimp.exe and Ildasm.exe?

econner1-Apr-03 4:37

econner

1-Apr-03 4:37

Thanks. Found it. However, it wasnt found when I did a search for it.

Re: tlbimp.exe and Ildasm.exe?

econner1-Apr-03 4:53

econner

1-Apr-03 4:53

When I attempt to use custom DLL that was written in Visual Foxpro (works fine in VB6, Foxpro 7, and Delphi 7) in C#, I get an error that cannot convert string to ref object. I tried to use the DLL without running thru tlbimp and with running it thru tlbimp and I get the same results.

If I call MyClass.Myfunction("johndoe", "12345") I see in the intellisense Myfunction(ref obj name, ref obj password).

I thought I read somewhere That I may have to edit this with Ildasm and change it.

????

Thanks.

Re: tlbimp.exe and Ildasm.exe?

monrobot131-Apr-03 5:38

monrobot13

1-Apr-03 5:38

try adding the ref keyword in front of your parameters

- monrobot13

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